BE434750A - - Google Patents

Description

       

    <Desc / Clms Page number 1>
 



  Improvements to telephone systems.



   The present invention relates to improvements in telephone systems or concerning telephone systems, and although it relates more particularly to the interconnection of networks by means of automatic switching devices;

   whereas previously they were only interconnected by manual bodies, or that it concerns the extension of a network by interconnecting offices by means of automatic switching devices whereas due to their geographical position in relation to the network they were previously connected to this network by manual switching devices (in Great Britain, for example, the invention relates to the establishment of inter-

  <Desc / Clms Page number 2>

 urban or long-distance communications respectively by automatic switching devices,), the invention also finds its application in networks such as those to which we refer below.



   In general, a network currently consists of a number of offices interconnected in an appropriate manner by cables or junction lines and which are at present or which one intends to equip in future to operate automatically and to be interconnected automatically.



   Each network usually has a number of other offices associated with it which are too far from the center of the network to be easily treated in the same way. It may be desirable, for example, to route certain calls in a special way and to deviate from the unit rate conditions for calls to and from these offices, as may be the case for offices located at a certain distance. from the center of the network.



   An object of the invention is to enlarge the area in which communications can be established automatically by interconnecting the offices forming part of the network, or by incorporating them into the same system as that used for the naming of each office arrangements making up the network. part of the network while special features are provided to separately determine the cost and manner of routing similar communications, or if it is not possible to incorporate these offices into the same communication system. denomination either because these offices would be more conveniently located to form part of another network having its own naming system or for any other reason,

   such as the-fact that

  <Desc / Clms Page number 3>

 the introduction of certain offices would necessitate a change in the naming system planned or in use, these offices or subscribers connected to them will then be designated according to another naming system.



   As examples of the latter case, a naming system of a network may be based on five digits and the addition of a certain office or more offices may require changing the system to a six digit system. Likewise in an area where the naming system is such that the offices are represented by their first letter, it may be difficult to add certain other offices while keeping the same naming system due to the confusion that can occur. between names.



   In order to establish communications between offices operating according to different naming systems, it is practical to allow the addition of, for the denomination of each subscriber of the same naming system, one or more distinctive additional digits which serve from prefix to subscriber number in the same naming system to indicate that the communication takes place between networks,
By "naming system% is meant the system according to which the subscribers or other services of the same zone can be designated in a distinctive way, this denomination being able to be carried out by numbers only, by numbers and letters combined. or by only letters only,

   and used / to establish communications by calling stations in the same zone to subscribers or other correspondents in this zone, while for calling stations not belonging to this zone

  <Desc / Clms Page number 4>

 it is used for the automatic establishment of communication after one or more prefix digits have first been sent to characterize the zone. It is understood that the naming systems in different areas may be composed according to the same or according to different methods. For convenience, the word "area" will be used in this specification to indicate the region interested in a network of offices having the same naming system.

   An area will be considered to be made up of two parts, the "urban region" of an area in which subscribers can call each other for the same unit rate, or in which similar calls can be recorded on individual subscriber counters, such a region generally being within a certain radius of a suitably chosen point in the area and the "suburban region" of an area for communications originating from or going to that region. region and for which special provisions are to be made with regard to pricing such as, for example, the use of equipment to print a ticket, this region being outside the radius indicated above and not overlapping the region from another area.



   Another object of the invention is to establish communications within a region covered by an office network, having the same naming system according to a new method which allows local communications and communications to outside the region are controlled by equipment capable of being used for both purposes.



   Another object of the invention is to control the establishment of an external communication coming from

  <Desc / Clms Page number 5>

 from a region covered by a network of offices having the same naming system, to other offices belonging to this region or outside it by channels having appropriate transmission characteristics and depending on the office from which the call originates and the office for which it is intended.



   According to one characteristic of the invention, the stage of the communication during which the reception of information intended to be recorded automatically, for example for the purpose of pricing, is also used for the purpose of controlling the sequence of operations necessary for establishing Communication.

   In the case of a communication outside the zone, the set of distinctive digits of a called subscriber is, after the appropriate connectors have been activated to choose a line leaving the zone, transferred to a recording translator or converter to allow it to control the establishment of the communication to the called party of the remote zone so that it is carried out in the appropriate manner; it may be desirable, for example, to carry out the control in a remote office by means of voice frequency pulses or a powerline system, or in any manner different from the normal DC pulse method. , or including that method which might be considered desirable;

   or the zones considered can use different automatic switching systems or they can operate according to different digital systems and the appropriate control can be carried out by the converter without introducing any change in the telephone equipment for the remainder of the zone. Or it may still be desirable to have

  <Desc / Clms Page number 6>

 the converter to control, in addition to the control of the digital position of the various connectors used in establishing a communication, the putting into operation of the repeaters or the selection of a junction line of appropriate qualities, and very particular- ment if it is taken into account that inter-zone communications may include communications passing through one or more intermediate zones.

   In addition the converter in the event that there are a number of intermediate zones can still include the appropriate additional digital controls to achieve the establishment of communication with the requested zone before the selection of the requested office and the desired subscriber is performed.



   Another characteristic of the invention relates to an arrangement by which after identification of the number of the calling subscriber, it is transmitted externally to the communication and directed to devices where it is provisionally placed in reserve to activate the call. recording equipment. By carrying out the reserve in this way, it is possible to have a control during the reception of the complete information before the recording takes place or even to foresee special control bodies operated under the control of the number of the calling subscriber as stored in order to be sure that no error could have occurred in the transmission.



   According to another characteristic of the invention, the line of the equipment used, when the calling subscriber is in a particular situation, depends on the different kinds of controls exerted on this equipment, routes the communication of cation to corresponding destinations. and causes the./

  <Desc / Clms Page number 7>

 the identification of the subscriber calling externally to the established communication in order to reintroduce it at an appropriate stage in the establishment of this communication.



   Of the different kinds of commands which lead to this result, we can mention communications for subscribers outside the zone of the called subscriber, communications for subscribers inside the zone of the called subscriber but for which the tariff is higher than that planned beforehand or being done by a particular junction line, communications to a manual operator weighing, communications initiated following disturbances on the calling line for example, or a delay on the part of the caller to be operated his record.



  This last type of maneuver causes incorrect operation of the equipment or subscriber to be controlled.



   Another important feature of the invention is the use of code signaling to allow transmission of the characteristics of a communication from one point to another in the shortest time; such characteristics being able to include / understand the number of the caller, the number of the called party, the tariff to be applied to the communication and also other special information.



  The code preferably consists of a small constant number of pulses for each transmitted digit or each indication of a series of information in which the individual pulses are combined differently and in a manner which characterizes the particular value or number. meaning of the indications. Almost the set of information, or only a part of it, can be given by the office from which the call originates and forwarded to a central office in the same area where the automatic recording takes place.

  <Desc / Clms Page number 8>

 



   Another characteristic of the invention relates to the equipment associated with an office issuing a zone, a combined recorder translator to record the number of the called subscriber and to control, depending on the destination of the communication, both the position of the connectors through which the communication is established and the determination of the nature of various operations forming part of the communications having different destinations, such as counting, the quality of the trunk lines used, if additional direction digits are entered or not, if the number of the called subscriber is to be transmitted in the usual way by means of series of pulses or in code, and if the number of the calling subscriber is or is not to be transmitted in order to be identified or to be registered.



   As examples of the members which can be counted in a recording translator according to the invention, in addition to the members for controlling the positions of the connectors by which communication is established, there may be mentioned firstly, members for determining the counting mode to be used for. communication, that is to say if the subscriber counters must be activated or if the communication must be recorded by a ticket printing device or if the sum to be paid must be established by an operator who marks it on a ticket as is the case for interurban and long distance communications;

   secondly, devices for determining the quality of the trunk lines used with regard to the destination of the communication, local calls which can be transmitted over poor quality trunk lines, long distance lines to remote offices containing repeaters which can also establish communications through telephone lines

  <Desc / Clms Page number 9>

 poor quality trunk, while communications to less distant offices without repeaters may be transmitted over good quality lines;

   thirdly, devices for determining whether the communication can be established by digits corresponding to the number of the called subscriber or by the addition of additional digits or even by digits completely independent of the number of the called subscriber. , so that it is routed to a pc ition or trunk line determined by the first record; fourthly, devices for determining whether the number of the called subscriber is to be transmitted in code, and also at what stage of the establishment of the communication it must be transmitted;

   the code transmission taking place under conditions where it was desirable to keep the number of the subscriber called in reserve either to transmit it to another zone, or to activate a receipt printing equipment or still to activate an indicator of the called subscriber;

   fifthly, devices for determining whether or not a signal is to be sent beforehand to indicate that the calling subscriber wishes to receive information, the subscriber being able for example to send an additional digit, and the translator. recorder thereby causing the production of a signal warning the service attendant and the printing on the receipt of a characteristic sign so that the subscriber can be notified at the end of the communication of the amount payable or any other characteristic he would like to know;

   sixth, devices for determining whether the recorder is combined to record the number of the calling subscriber, as will generally be the case if the number of the calling subscriber is to be transmitted, for example in order to actuate a device ticket printer

  <Desc / Clms Page number 10>

 in order to record all the characteristics of the communication or, in the event of a permanent short-circuit on the line, in order to warn the agent and give him the number of the disturbed subscriber or, in order to activate a call indicator equipment to notify the operator of the calling subscriber number.



   It is understood that the invention is applicable to a translator-recorder comprising one or a combination of the groups of determining members mentioned above by which the nature of the various operations required for communications with different destinations, is controlled.



   According to yet another characteristic of the invention, a combined translator-recorder for controlling the establishment of a communication is provided with several switching devices gradually activated, one of which is chosen according to the initial operation of the device. recorder translator to successively execute the various steps required in establishing a communication according to the particular type of communication determined by this initial operation.



   According to another characteristic of the invention, a combined translator-recorder for controlling the establishment of a communication determines, depending on the digit or figures transmitted first and to which the recorder translator responds first, whether the communication is for a subscriber. a remote area or the same area as the calling party, and if it is a remote area this translator-recorder exercises a command to allow a second translator-recorder to control the establishment of communication and transmits the characteristics of the caller's number so that automatic registration can take place.

  <Desc / Clms Page number 11>

 



   According to another characteristic of the invention, the same recorder switching device of a recorder translator is combined to perform different series of control operations for the establishment of communications depending on one or more digits which have been set. determined in advance, have or have not been issued first. switch A device / recorder can, for example, answer the first digits sent and if the call is intended for a different zone from that of the calling subscriber then the switching device will be released by the action of the digits issued first and will respond to subsequent digits.

   In the event that the switching device is not released, the sequence of operations due to one or more particular digits recorded by this switching device will correspond to the establishment of a particular local call depending on the value. of this or these numbers.



  If the communication is intended for an area outside that of the calling party, then the digit or digits to which the recording device answers will have the effect of commanding another series of control operations such that the same position of this recording device switching of a recorder may give rise to different series of control operations depending on whether or not it is first activated by one or more figures determined in advance.



   Essentially the progressively operated switching device consists of brushes of a connector and associated bank contacts, or part of some rows of bank contacts. Different brushes, and possibly different parts of rows of bank contacts are chosen depending on whether the call is a local call, a call to a satellite office with a capacity of less than

  <Desc / Clms Page number 12>

 100 lines for example, or to a satellite office of another capacity, less than 1000 lines for example, or to a central office in the same urban area, or to an office in the sub-urban area, or coming from a caller from outside the area, which requires top-quality trunk lines,

   or to an external area which requires poor quality trunk lines and the use of repeaters, or depending on whether the communication is directed to an attendant as is the case for long distance communication for which the operator - failure to record the characteristics on a ticket, or have them recorded automatically, in which case it is necessary to have the recording translator transmit all the characteristics of the communication, including the numbers of the calling subscriber and the called subscriber to the complete, the tariff to be applied to the communication and if the subscriber must be informed of certain characteristics of the communication, if this communication is an international communication,

   whether the communication is to have its duration recorded or whether it is intended for a manual office and also whether the communication can be established through a special channel which could be available instead of routing it through the central office . In addition, a special routing of the communication can be provided in the event that the subscriber leaves his receiver off-hook for an indefinite time, or when his line is short-circuited in which case the number of the calling line is transmitted to a position. operator or is printed on a ticket to attract the attention of the attendant.



   According to another characteristic of the invention, a caller determination device is provided to be put into operation for calls made in a certain

  <Desc / Clms Page number 13>

 office in order to record the destination of the call and to control the route by which this communication to a remote office is to be established and moreover in order to determine which of the different cables or different lines respectively connecting these offices will be used in order to allow 'obtain transmission characteristics for the communications which are related to the final destination thereof.



   The invention will be better understood by reference to the following description of an embodiment of the invention described starting from an example which relates only to a particular naming system proposed for Belgium, and it is understood that the invention is also applicable for other different numbering systems although considerable changes would be required in the development of circuit details.

   For the application to a region such as London for example where the naming system is based on three prefix letters followed by four digits, it is possible to precede the first three letters with two or three digits for example (the figure "O" being already used for other purposes) which would not correspond to the first letters of the name of an office in the London area in order to indicate that the call is requested for an area outside the London area. that of Londies, to an Interurban office outside this London area, for example, or to an office in a remote area with the same denomination system or a different denomination system than in the London area.

   The transmission of the preliminary digits would cause a modification in the registering translator so that the same prefix letters for example would have the effect of triggering operations.

  <Desc / Clms Page number 14>

 different from those that would have been performed had the preliminary figures been omitted.



   In the plans, fig. 1 represents a network of offices forming an area with the same naming system and showing the urban and suburban regions.



  It also represents long-distance lines leading to other zones and leaving the central office of the zone represented as well as neighboring offices belonging to other zones.



   Fig. 2 shows in schematic form some units of the central office equipment and others belonging to another office for the purpose of illustrating the invention.



   The fg. 3 and 4 show sufficient elements of a known line finder circuit to indicate the modifications which have been introduced therein for the purpose of the invention.



   Figs. 5 and 6 represent the researcher circuits of the recorder translator.



   Figs. 7 - 16 represent the translator-recorder used in an office other than the central office. These figures are to be arranged as shown in FIG, 17 to give the complete circuit.



   Fig. 18 shows a table indicating how the digits are transmitted in code.



   Figs. 19 - 26 show the distribution connections connecting the banks of the RS6 forward path determination connector which is part of the recorder translator, to the various conductors shown as neighbors of the banks of this connector in FIG. 12.



   Figs. 28 - 30 show the circuit of the first group selector.



   Fig. 31 represents the circuit of a line

  <Desc / Clms Page number 15>

 junction.



   Figs. 32 - 41 represent the control circuit of a trunk line placed at a central office and used to store all the information transmitted by the recording translator, and to determine the duration of the communication. These figures are to be arranged as indicated in FIG. 69 for, represent the complete circuit.



   Figs. 42-47 show a translator-to-record converter which receives the called subscriber number of the trunk or long distance circuit and converts it into suitable digits to complete the call in the desired direction. These figures are to be arranged as indicated in fig. 70 to represent the complete circuit.



   In order to determine the cost of a particular telephone call, the whole of Belgium has been divided into zones, each zone being drawn as far as possible having a major town as its center and being designated by the name of this central city, it is thus that there exists for example the zone of Mons, the zone of Brussels, the zone of Charleroi, the zone of Tournai and so on. Each zone is then divided into an urban region which includes all offices located within a radius of about ten kilometers from the center of the zone and into a suburban region which includes offices located beyond the ten kilometer radius. but which nevertheless does not belong to the zone.



   Let us refer for example to fig. 1 which represents the Mons area, with the central office in Mons, the Eautrage office as the office of the US urban region, St. Ghislain is another office in this region, while Dour is an office of the sub-urban region SS. The limits of the zone

  <Desc / Clms Page number 16>

 are indicated by a heavy chain line.



   The determination of the amount to be paid for a communication is carried out taking into account the distance in a straight line separating the two offices, and in the particular example chosen, a communication between two offices in the same urban area is considered as a simple communication. The same tariff applies to certain calls originating from offices in the urban region and from binaries to offices in the sub-urban region. Thus for example communications from St. Ghislain to Dour are considered as simple communications and for this reason the region which concerns these offices is shaded in fig. 1. Calls enter other offices in the urban area and Dour, however, are considered multi-rate calls.



   Usually communications between offices in different areas are multi-rate communications, but in this case again since the amounts payable are based on the straight line distance between the offices, a certain limit is necessary to adjust these amounts. . Thus in fig. 1 Blaton's office is in the Tournai area, but communications between this office and Hautrage's are considered to be single-rate communications and for this reason the region comprising these offices is shaded in the figure.



   It should be noted that currently Blaton is a manual office and has direct links to Hautrage. However, when the conversion to an automatic office takes place, the direct connections can be removed and a communication from Hautrage to Blaton can then be established via the central office of Lions, the central office in Brussels, the central office in Tournai and from there to Blaton. In addition the

  <Desc / Clms Page number 17>

 The channel through which the call is established may include repeaters although the call will always be considered a single rate call.



   Likewise, Dour is currently a manual office with direct connections to St. Ghislain. When
Dour will be changed to an automatic office these junctions can be abandoned and a direct junction between Dour and the central office in Mons will be provided so that communication between Dour and St. Ghislain will be established via the central office in Mons. although this communication will always be considered to be single rate.



   The junction lines connecting the central office of Mons and the various offices in the area and the interurban lines connecting the central office of Mons to the other central offices are of two qualities which can be designated by "good" and "poor". . The quality of the junction to be used for a given communication and the possible use of repeaters are determined according to the destination of the communication. For local calls, for example, a poor quality trunk line is used but for long distance calls a good trunk line and a good long distance line will be used.

   The qualities "good" or "poor" of the junction lines are indicated in fig, 1 in coarse or thin lines connecting the central office of Mons to the other offices of the urban area and treated coarse or thin for the lines leaving the office central Mons to other central offices.



   Regarding the numbering system, '' each subscriber receives a five-digit number which is used for local calls only, i.e.

  <Desc / Clms Page number 18>

 for calls made in the same area including urban and suburban offices. For communications outside the zone, the calling subscriber will be instructed to send three additional digits, the first of which is always 0 and the following two of which are characteristic of the particular zone containing the requested office.



     As an example, the subscribers of the Peacocks office, which has a maximum capacity of 8000 lines, have a number that begins with the number 2 followed by one of the numbers 1 to 6 and 9 to 0; the subscribers of the Hautrage office, whose maximum capacity is 600 lines have a number that begins with the digits 57 and the subscribers of the Dour office, which has a maximum capacity of 1200 lines, have a number that begins with the digit 6 followed by one of the digits 1 or 2. Finally, the subscribers of the St. Ghislain office which has a maximum capacity of 3000 lines have a number which begins with the digit 3 followed by one of the digits 1, 2 or 3. It is advantageous now to describe in a general way the establishment of the various possible communications between the offices of the Mons area.



  First of all, all communications from Hautrage, except perhaps direct communications to St. Ghislain, will eventually pass through the central office in Mons, although direct communications to other neighboring offices such as Blaton are planned. Communications to other offices in the area go through the Mons office.



   From the point of view of the arrangements made for fixing the sum to be paid or for carrying out the counting of calls, it will be seen that there are three possible cases, For single tariff calls taking place in the Lions urban region, the communication is checked in

  <Desc / Clms Page number 19>

 by the counter of the calling subscriber in the usual manner. For all other communications, the counting will be carried out either automatically by the device to print or take the tickets located at the central office in Mons or for certain communications such as interurban or interzone communications that the subscriber wishes to have established. by an operator, or for international communications by an operator who prepares a ticket.



   It should also be noted that for communications originating from an office which is still of the manual type such as Dour, the operator has the necessary equipment to automatically establish the various communications, the counting mode used being based on the considerations mentioned above.



   It is therefore understood that it is necessary to provide each of the automatic desks with arrangements by which the routing of the communication towards a determined direction, the metering mode to be used, the quality of the transmission lines. junction and interubaines to be used to establish the communication and finally the tariff to be applied to the communication, are determined. In addition, the provision adopted can make it possible, if necessary, to keep the numbers of the calling and called subscribers in reserve in order to then transmit them to the automatic ticket printing device located in Mons, This provision used in each of the automatic offices comes in the form of a translator-recorder.



   Let us now refer to fig. 2 of the plans which represent the junction circuit of the Hautrage and Mons offices. It is understood, however, that the part of this schematic arrangement necessary for the comprehen .sion of the invention has only been shown. Both

  <Desc / Clms Page number 20>

 offices use a researcher system but only the arrangement of these researchers in Hautrage has been shown, given that that of Mons is in all points similar.



   The subscriber lines are divided into groups of 200 and a group of recording translators is generally provided for each group of 2000 lines, a calling line being in such conditions that it is temporarily associated with a recording translator of the appropriate group. .It is however understood that since the maximum capacity of Hautrage is only 600 lines, that only one group of recorder translators will be sufficient to allow the routing of all communications. The calling line is associated with a recorder translator through researchers ILF, 2LF, lLFl, 2LF1 and RTF recorder translators, RTFl researchers, the line seekers being permanently connected respectively to the first group selectors IGS, 2GS , lGSl, 2GS1.

   Each of the researchers have two sets of brushes and consequently give access to 200 lines and in the example of FIG. 2, the researchers give access to the lines whose numbers are indicated. The RTF and RTFl recorder translator searchers are respectively common to the 1LF, 2LF and 1LFL, 2LF1 line searchers. It is therefore understood that in an office with a capacity greater than that of Hautrage there will be other pairs of researchers with different subscriber numbers in the group of 2000 lines ending at their benches and who will however have access to the same recorder translators.



   With regard to the registration of the calling subscriber number, the group of 2000 lines which comprises the calling line is determined by a per-

  <Desc / Clms Page number 21>

 maneuver in the recorder translator itself since, as indicated above, each recorder translator serves a particular group of 2000 subscriber lines.



    At Hautrage the thousand units digit is also determined by a permanent connection to the translator-recorder, while in a larger office the thousand units digit and the group of 200 lines containing the calling line are determined. by the researcher by whom the recording translator was entered. The hundreds digit is determined by the position of the relays through which the calling line is accessible by the line finder, while the tens and units digits are stored in the recorder translator, causing certain connectors to operate. synchronism with the ascension and rotation electromagnets of the line finder.



   Each first Hautrage group selector gives access through levels 1, 2, 4, 5, 7 and 8 to the local final selectors; by level 3 at the junction lines going towards Blaton; by level 6 at the junction lines going towards St. Ghislain; via level 9 to the "poor" quality junction lines going to Mons and by level 0 to the "good" quality junction lines going to Mons.



   The trunk lines going to Mons end in this office with an incoming IS selector which gives access through level 1 to 6, 9 and 10 to local LGS group selectors. By level 7 the IS selector gives access to other selectors such as IIS and through them one reaches the junction lines going to the offices of the urban area. By level 8 the IS selector

  <Desc / Clms Page number 22>

 provides access to selectors for special services such as the TS selector. Through levels 1 to 4 of the TS selector one has access to operator positions such as OP through a group of relays RG2, and a recorder R connected through a searcher being used for the purpose. to record the number of the calling subscriber.

   It should be noted that although these two levels are represented for a matter of ease as giving access to the same operator position, they can in fact give access to different positions.



  Consequently, one level can give access to operator positions through which interurban communications are established, while the other level can give access to operator positions through which international communications are established.



  Levels 5 to 10 inclusive of the TS selector are used for the establishment of lines to special services that may be requested such as for example the speaking clock while levels 2 and 3 are used to establish communications by long distance lines going to or beyond the central offices of Brussels and Charleroi. The equipment associated with each of these two levels is similar and has been shown for level 3 only.

   Each level 3 contact is connected to a group of RG relays which, depending on the type of communication, is used to activate depending on whether the quality of the junction line must be "good" or "poor" one of the two researchers TLF1 and TLF2 trunk lines which will automatically search for a TLCC trunk line control circuit associated with an appropriate quality junction. Similar equipment is also

  <Desc / Clms Page number 23>

 associated with each of the interurban lines but only that associated with a "good" quality interurban line has been shown.

   If a line of "poor" quality is requested and / all are busy, a line of "good" quality will be seized but if these are also all busy, the call will be routed to an operator position such as OP by through the last bench contact of inter-suburban line researchers and by the RG1 relay group in order to allow the operator to route the communication if necessary.



   The TLCC trunk line control circuit is designed to be connected via an automatic finder OF to a converter C to establish communication and with a control device of the printing machines PC as soon as the communication is terminated.



  A device for determining the date and time of the DTU communication is accessible by the device for controlling the printing machines. Finally at the end of the conversation, the PT and PU printing machines are combined to be associated with the control devices of the PC printing machines in order to print the characteristics of the communication, one on a ticket and the other on a tape recorder and on a single line for easy verification.



  In this general description, reference will now be made to the detailed circuits of which FIGS. 3 - 31 represent the equipment located at the Hautrage office while FIGS. 32 - 47, 69 and 70 represent the equipment located at the central office in Mons.



   Detailed description.



  Line researcher and translator-recorder researcher.



   Referring to the arrangements of the line finder shown in Figs. 3 and 4 we will see that these

  <Desc / Clms Page number 24>

 Circuits are only shown in sufficient detail to understand the invention.



  A complete representation of these circuits is given and the circuits discussed herein have been shown with isolated contacts so that the differences between these two types of circuits can be readily appreciated.



   In the explanation of the detailed operation of the circuits it will be assumed that a subscriber with the number 57.109 wishes to establish a communication and it will then be assumed that the line finder 1LF is chosen to extend the line of the calling subscriber to the translation. - RT recorder. When the PDS primary distributor finds a free seeker, the LK relay attracts by: earth, the two windings of the LK relay in series, brush and bank contact la, armature hb2, vertical bank and VW vertical brush to the battery.

   The LK relay attracts and blocks by its right winding and by the armature lkl while by the armature lk2 the following circuit is established: earth, armature 143 or 144 of relay 121 (fig. 5) conductor 100, (fig. 5 and fig. 4) armature lk2, brush and bank contact 2a of the PDS distributor, conductor 104, (fig. 4,5 and 6), armatures 145,146, windings of relay 112 in series towards the battery. The relay 112 attracts by this circuit and by the armature 156 short-circuits its lower winding; by armature 155 it connects an earth to a terminal of relay 111; by armature 154 it establishes a test circuit for the RTF recorder translator finder; by armature 157 it opens the circuit of relay 113 at one point and by armature 159 it places an earth on conductor 105.

   In addition by armature 158, relay 112 establishes the / - circuit,

  <Desc / Clms Page number 25>

 following for the excitation of relays 115 and 116: earth, armature 158, armature 163, windings of relays 115 and 116 in parallel with resistor 165, towards the battery.



   The RTF recorder translator finder does not act as a preselector and if the finder brushes are on a contact connected to a busy recorder translator, a ground will be returned by conductor 135, bench contact and brush 126 , the armature 152 in its rest position, the armature 154, the switch contacts 166 of the electromagnet 122,, and the windings of the electromagnet towards the battery. Further this earth is extended to one terminal of relay 111, the other terminal being earthed as indicated above so that this relay is short-circuited and does not attract. The electromagnet 122 attracts through the above circuit and causes the finder brush to step by step until a free recording translator is found.

   A free recorder translator has no potential on its test contact so that the following circuit acts at this time: earth, armature 155, winding of relay 111, switch contacts 166, electromagnet 122 towards the battery. The relay 111 alone 'attracts by this circuit and by the armature 152 and its rest contact opens the excitation circuit of the electromagnet 122 and by its work contact gives a protective earth to the recording translator, and by armature 153 closes an obvious circuit for relay 114. Relay 114, however, is slow to attract in order to allow recording of the calling subscriber's thousand units digit (if necessary) and the group of two hundred lines containing the calling subscriber

  <Desc / Clms Page number 26>

 before the relay draws.

   In addition, the relay 111 by the armature 148 gives an earth by: brush 129 and bench contact, conductor 138 (fig. 5 and 15) winding of the relay 187 to the battery. Relay 187 attracts and by armature 326 closes the following circuit for relay 189: earth at armature 329 of relay 238 (fig. 7), armature 326, winding of relay 189 to the battery. Relay 189 attracts and through armature 335 closes an obvious circuit for relay 190. Relay 190 attracts and through armature 339 closes an visible circuit for relay 191.

   In addition, the relay 189 through the armature 336 gives an earth coming from the armature 355 and its rest contact (fig. 11) to the conductor 141 and from there through the bench contact and the brush 132 (fig. 6 ), the armature 185 to the conductor 110 to make the line finder 1LF occupied with the benches of the secondary researchers (not shown) and to keep the calling party's cut-off relay attracted, its guard earth having been previously provided by the armatures 158 (fig. 5), 178 and 185.



   Determination of the caller's number.



   As noted above, each translator-recorder seeker is permanently associated with two line seekers, both giving access to the same group of subscriber lines. Thus, referring again to FIG. 2 we see that researchers 1LF and 2LF both have access to subscriber lines numbered from 57100 to 57299 inclusive. Likewise, line researchers 1LF1 and 2LF1 have access to subscriber lines numbered from 57400 to 57599 inclusive.

   If the office with which the translator-recorder is associated has a greater capacity than Hautrage, there will be other pairs of line seekers associated with a translator-recorder seeker and these line seekers will have

  <Desc / Clms Page number 27>

 access to lines whose numbers are different from those accessible by line seekers 1LF, 2LF, 1LFl, 2LFl.

   It will therefore be seen that when a recorder translator is entered through a particular recorder translator finder, the group of 200 lines comprising the calling subscriber is immediately determined and arrangements are made in each recorder translator finder by which a particular potential is given by the intermediary of a conductor of a certain group or by the intermediary of a combination of conductors from the researcher to the recorder translator in order to record in the latter the group of 200 lines.



  Referring now to fig 5, the group of conductors includes conductors 123, 124 and 125 which are connected to the logging translators through actuated contacts 149, 150 and 151 of relay 111, idle contacts 168,169 and 170 of relay 114 and through the brushes 133, 131 and 130 respectively and by the brushes 133, 131 and 130 and their bank contact, the conductors 142, 140 and 139, the relays 200, 199 and 198 (fig. 16) the resistor 359 towards battery. The potential applied to these conductors is shown in the following table:
 EMI27.1
 
 <tb> Group <SEP> of <SEP> lines <SEP> 1100 <SEP> - <SEP> 1299 <SEP> potential <SEP> positive <SEP> connected
 <tb>
 <tb>
 <tb> to <SEP> driver <SEP> 123.
 <tb>
 <tb>
 <tb>



  " <SEP> " <SEP> " <SEP> 1300 <SEP> - <SEP> 1499 <SEP> potential <SEP> positive <SEP> connected
 <tb>
 <tb>
 <tb>
 <tb> to <SEP> driver <SEP> 124.
 <tb>
 <tb>
 <tb>
 <tb>



  " <SEP> " <SEP> " <SEP> 1500 <SEP> - <SEP> 1699 <SEP> potential <SEP> positive <SEP> connected
 <tb>
 <tb>
 <tb> to <SEP> driver <SEP> 125.
 <tb>
 <tb>
 <tb>
 <tb>



  " <SEP> " <SEP> " <SEP> 1700 <SEP> - <SEP> 1899 <SEP> potential <SEP> positive <SEP> connected
 <tb>
 <tb>
 <tb>
 <tb> to <SEP> conductors <SEP> 123 <SEP> and <SEP> 124?
 <tb>
 <tb>
 <tb>
 <tb>
 <tb>
 <tb>
 <tb>
 <tb> " <SEP> " <SEP> " <SEP> 1900 <SEP> - <SEP> 1099 <SEP> potential <SEP> positive <SEP> connected
 <tb>
 <tb>
 <tb>
 <tb> to <SEP> conductors <SEP> 123 <SEP> and <SEP> 125.
 <tb>
 <tb>
 <tb>
 <tb>



  " <SEP> " <SEP> " <SEP> 2100 <SEP> - <SEP> 2299 <SEP> battery Auxiliary <SEP> <SEP> connected
 <tb>
 <tb>
 <tb> to <SEP> driver <SEP> 123.
 <tb>
 <tb>
 <tb>
 <tb>



  " <SEP> " <SEP> " <SEP> 2300 <SEP> - <SEP> 2499 <SEP> battery Auxiliary <SEP> <SEP> connected
 <tb>
 <tb>
 <tb>
 <tb> to <SEP> driver <SEP> 124.
 <tb>
 <tb>
 <tb>
 <tb>



  " <SEP> " <SEP> " <SEP> 2500 <SEP> - <SEP> 2699 <SEP> battery Auxiliary <SEP> <SEP> connected
 <tb>
 <tb>
 <tb>
 <tb>
 <tb> to <SEP> driver <SEP> 125.
 <tb>
 

  <Desc / Clms Page number 28>

 
 EMI28.1
 
 <tb>



  Group <SEP> of <SEP> lines <SEP> 2700 <SEP> - <SEP> 2899 <SEP> battery Auxiliary <SEP> <SEP> connected
 <tb>
 <tb> to <SEP> conductors <SEP> 123 <SEP> and <SEP> 124 <SEP>.
 <tb>
 <tb>



  " <SEP> " <SEP> " <SEP> 2900 <SEP> - <SEP> 2099 <SEP> battery Auxiliary <SEP> <SEP> connected
 <tb>
 <tb>
 <tb> to <SEP> conductors <SEP> 123 <SEP> and <SEP> 125.
 <tb>
 



   It will be noted from the table above that the markings given by the three conductors are such that they relate to 2000 subscriber lines. This is naturally not necessary in the Hautrage office where the maximum capacity is 600 lines, but it is necessary in the larger capacity offices, for example the one in Mons for which the maximum capacity is 8,000 lines. Since a group of recorder translators is planned for each group of 2000 subscriber lines, four similar groups will be provided in Mons and all markings will be used.

   Moreover, since the digits of tens of thousands and units of thousand of the telephone numbers of Hautrage subscribers are always respectively 5 and 7, they can be recorded thanks to a permanent connection in the recording translator as will be explained below. after.



   From the above it will be seen that since it has been assumed that the number of the calling subscriber was 57109, that is to say that it belonged to the first group of 200 lines, the positive potential will be permanently connected. to conductor 123 in the RTF logger translator finder. This potential is extended by the armatures 149,168, the brush 133 and the bank contact, the conductor 142 (fig. 6 and 15), the armature 358, and the winding of the relay 200 towards the battery through the resistor 359. The relay 200 is blocked by its contacts 361 marked "X" by a negative through the winding of the relay 197 towards a ground at the armature 335 (fig. 15).

   The relay 197 draws in series with the relay 200 and by the armatures 358, 357 and 356 disconnects the conductors 123, 124 and 125 respectively (fig. 5) from the relays 200,

  <Desc / Clms Page number 29>

 199 and 198. Note that relay 201 cannot draw through the circuit of relays 200, 199 and 198 due to rectifier 363 in series with its lower winding. If, however, the recording translator is part of a larger office, then when the potential of the booster battery is connected to one or a combination of conductors 123, 124 or 125, that is to say the number of the calling subscriber belongs to the second group of thousand, the relay 201 will attract in series with the relays 198, 199 or 200 since in this case 'the potential is such' that it causes the passage of the current in the direction for which the rectifier 363 is conductive.

   It is therefore understood that the discrimination effected by the operation of the relays 198, 199 and 200 and of the relay 201 determines the group of 200 lines which contains the calling subscriber and also the group of thousand lines which contains it.



   Let us return now to fig. 5, the operation of relay 114 is delayed for a sufficiently long time to allow the discrimination described above to be performed. The relay 114 by attracting is blocked by its two windings in series with the armature 171 towards an earth at the armature 182; by contacts 168, 169 and 170 it disconnects the brushes 133, 131 and 130 from the conductors 123, 124 and 125 and connects them respectively to the upper winding of the relay 117 by the armature 183, to the conductor 109 by the armature 174 and to the conductor 108 by the contact 175. The attraction of the contacts 169 and 170 serves to prepare the group selector 1GS associated with the line finder 1LF.

   A group selector preparation circuit passes through: winding of relay 209, (fig. 13), armatures 367, 357, conductor 140

  <Desc / Clms Page number 30>

 (fig. 15 and 5) bench and brush contact 131, armatures 169, 174, conductor 109 to the negative conductor from line finder 1LF and from there to the battery through a winding of the group selector pulse relay . The other circuit is established as follows: battery, winding of relay 210 (fig. 13), armatures 366, 356, conductor 139 (figs. 15 and 5) bench contact and brush 130, armatures 170,175, conductor 108 towards the positive conductor from the line finder and thence to earth through the other windings of the pulse responsive relay.

   Consequently the relays 210 and 209 and the relay responding to the pulses attract after the attraction of the relay 114. Further by the contact 172, the relay 114 connects together the conductors 102 and 103 respectively through the contacts 179 and 180 connecting from this. makes the contacts of the advancement relay which causes the step-by-step operation of the electromagnets of the ascension electromagnet circuit of the LF1 line finder. It will also be noted that a circuit is established from the contact 172 through the armature at work 160, the brush 127 and the bench contact, the conductor 136 (fig. 5 and 15), the armature 370 and its normally closed contact, the winding of relay 196 towards the battery.

   Relay 196 is therefore drawn in and released in synchronism with / pulling and releasing the ascending and rotating electromagnets of the line finder so that the number of steps the line finder takes in the vertical and horizontal directions are repeated by the contacts of relay 196 in order to register the tens digit and the ones digit of the calling subscriber number.



  Since the tens and ones digits are 0 and 9, respectively, the search finder brushes

  <Desc / Clms Page number 31>

 line will rise to the tenth level and it follows that ten pulses will be repeated by armature 371 of relay 196. These pulses are repeated by: earth, armature 371, armature 373 and its rest contact, winding of l 'electromagnet 255 towards the battery. The brushes of the RS3 connector therefore pass over the tenth contact. It should also be noted that the relay 196 by the armature 372 closes a circuit for the relay 195 which is slow to release and which remains energized throughout the duration of the pulse train.

   Relay 195 in turn closes a circuit through armature 376 to relay-194 so that this relay draws to its first stage and closes armature 375. Since however the lower winding of relay 194 is short-circuited by the earth connections of armatures 376 and 360 this relay will not draw fully before releasing the relay 195 at the end of the pulse train. - Then when the relay 195 releases, the relay 194 draws fully and by the armature 373 prepares a circuit by which the digits of the units will be repeated towards the electromagnet 256 of the RS4 connector.



  The units digit, in this case the digit 9, is therefore put in reserve in the RS4 connector during the rotation movement of the line finder. Note also that when relay 195 attracts upon receiving the ones digit, a circuit is closed from earth by armatures 376, 374, the upper coil of relay 193 to the battery. Relay 193 is combined in the same way as relay 194 so that at this stage it only closes armature 369. At the end of the pulse train, however, relay 193 draws fully and through contact. 368 opens the circuit of the electromagnet 256. In addition, the relay 193 by the armature 370 prepares a circuit for

  <Desc / Clms Page number 32>

 relay 202.



   When the LF1 line finder has found the calling line, the PDS primary distributor (fig. 3 and 4) is released and the LK relay releases. Earth is therefore removed from conductor 104 and relay 112 releases (fig. 5).



   As noted above, line seekers have access to 200 subscriber lines and the determination of the group of 100 lines to which the calling subscriber belongs is effected by attracting switching relays HA and HB. (fig. 3 and 4). In this case the hundreds digit of the subscriber number is 1 and it follows that the HA relay will attract. Under these conditions the earth in contact liai (fig. 4) is connected through the conductor 101 (fig. 4,5 and 6), the armatures 181, 173, 147, the brush 127, the conductor 136 (rig. 5 and 15 ), armature 370 and its make contact, winding to relay 202 towards the battery.



   The number of the calling subscriber is at this time fully recorded with regard to the digits of units of thousand, hundreds, tens and units by the selective operation of relays 198 to 202 inclusive and by the positioning of the two RS3 and RS4 connectors.



   Extension of the pulse circuit to the recorder translator.



   In the following, when the HA relay draws into the circuit of the 1LF line finder, the circuit of the subscriber's loop is extended to the translator-recorder as follows: earth, winding of relay 188, conductor 137 (fig. 15 and 5), bench contact and brush 128, armature 176, conductor 107 (fig. 5 and 4), contacts ha5, hb3, brush 41, subscriber loop, again the / il

  <Desc / Clms Page number 33>

 brush 41, contacts ha3, hb5, conductor 106 (fig. 4 and 5), armature 177, brush 129, conductor 138, lower winding of relay 187 towards the battery. The relay 188 attracts by this loop of the circuit and by the armature 377 gives another earth to the relay 189. In addition the invitation tone to be transmitted is then transmitted by the generator 378 of this tone (fig.

   II), the capacitor 379, the cam contacts 380 in their rest position, the armatures 333, 340, the capacitor 381, the winding of the relays 187 and 188 to earth and from there through the circuit loop as indicated above and due to induction at the second relay windings. The calling subscriber can then send the number of the desired subscriber.



   Double access to the translator-recorder finder.



   Let us return to the recorder translator finder represented in FIGS. 5 and 6, it should be noted that the conductors of 100 - 110 inclusive, the relays 112, 115, 116 and 117 are provided in duplicate and that the recorder translator finder can be entered by either of the groups of conductors. The reason for this arrangement will be appreciated if reference is made to the schematic junction circuit shown in FIG. 2. It will be remembered that a recorder translator searcher is permanently connected to two searchers such as 1LF and 2LF. Now the translator and recorder. and the translator-recorder finder are only used for a short period of time, while the line finder and associated group selector are naturally used for the duration of the call.

   By ensuring that the translator-recorder finder can be

  <Desc / Clms Page number 34>

 entered by the two line finders by different groups of conductors it is possible for the recorder translator to be used with one finder while a call is routed through the other line finder. It should be noted that when the recorder translator searcher is seized by the other group of conductors by an earth given by the conductor corresponding to the conductor 104 of the first group, this earth passes through the armature 184 of the relay 116, the armature 157 of relay 112 and the two windings of relay 113 in series to the battery.

   The operation of the translator-recorder finder is then exactly as described above, the relays 113, 118, 119, 120 fulfilling the functions of the relays 112, 115, 116, 117.



   The electrical interlocking of the relays 112 and 113 by the armatures 157 and 146 makes it possible to be ensured that only one of these relays is attracted at a time depending on the group of conductors by which the translator-recorder finder has been put into service.



   When the transmission of the digits by the logger translator is complete, a ground is given by the conductor 142, the bank contact and the brush 133, the armatures 168, 183, the upper winding of the relay 117 to the battery. The relay 117 is blocked by the frame 164 through the conductor 110 and by the armatures 161 and 162 it establishes the conversation circuit through the first group selector independently of the recording translator by the conductors 106,107, 108 and 109. Furthermore, through the armature 163, the relay 117 opens the circuit of the relays 115 and 116 which release slowly and which by their various armatures disconnect the recording translator to release it. Furthermore

  <Desc / Clms Page number 35>

 by armature 182, relay 116 opens the blocking circuit of relay 114 which releases.

   With the exception of relay 117 therefore the translator-recorder finder is now in its initial position and can be entered by the 2LF finder. It will be noted that the relay 117 remains attracted until the communication is released to maintain the connection of the conversation conductors between the searcher and the group selector. When the communication is released however the earth will be removed from the conductor 110 and the relay 117 will release and open the circuit of the talk conductors. Before considering the detailed operation of the translator-recorder circuits, a general description of the basic principles will be given.



   General description of the translator-recorder.



   Circuits are shown in fig. 7 to 16 which are to be arranged as indicated in fig. 17. In fig. 17 The constituent parts of the circuits are indicated in a simplified way in order to obtain a clear representation of the essential elements. The circuits include three two-way connectors TD1, TD2 (fig. 8), TD3 (fig. 9), rotary connectors RS1, RS2 (fig. 10), RS3, RS4 (fig. 14), RS5 (fig. Il ) and RS6 (fig. 12) at the same time as various groups of relays which are indicated by the references RG3 (fig. 15), RG4 (fig. 16), RG5 (fig. 14), RG6 (fig. 10), RG7 (fig. 13), RG8 (fig. 11) and RG9 (fig. 7). The number of the called subscriber is recorded by connectors TD1, TD2, RS1, RS2 and RS5, the latter also acting as a distributor to direct the incoming digits to the appropriate connectors.

   The TD3 connector is a connector, combined which makes it possible to determine the type of junction and the tariff to be applied to the communication. The number

  <Desc / Clms Page number 36>

 the subscriber calling as has already been described is registered on the RG4 relay group and the RS3 and RS4 connectors. In addition, the RS6 connector is used to control the transmission of the digits determining the direction and any additional information that might be desirable about the destination of the communication.

   For this purpose, depending on the destination of the communication determined by the registration of the number of the subscriber called, a particular brush of the RS6 connector is selected and the contacts through which this brush passes are interconnected to the various groups of conductors represented as neighbors of the benches and in such a way that it controls the transmission of the digits necessary to establish a particular communication.



  The transmission of the pulses from the recorder translator is carried out by the RG7 group of relays, the number of pulses which are to be transmitted by each train being controlled by markings passing either directly or indirectly from the various banks of connectors to a group of ten connectors. command triggered generally by the cable 282 with its different branches. These conductors start from the RG5 relay group and are multiple at the various connector banks in the recorder translator as indicated by the cable comprising the conductors and are connected directly to certain bank contacts of the RS6 connector.

   In certain circumstances pulses in the form of a code are transmitted by the recording translator in which case the group of relays RG5 is combined to act jointly with the group of relays RG6 due to the attraction of the relays 224, 225 and 226. Finally, a group of relays RG8 is intended for the purpose of giving alarm and supervisory signals in certain circumstances which will be discussed below.

  <Desc / Clms Page number 37>

 



   Following the registration of the number of the calling subscriber, the invitation tone to be transmitted is sent from the recording translator and the next operation to be carried out is the registration of the number of the called subscriber.



  It will first be assumed that the call is for a local subscriber of the Hautrage office and in this case the called number comprises five digits, the first being different from 0.



   The first digit entering is recorded by the upward movement of the TD1 connector and the second by the rotational movement of the TD1 connector. The third and the fourth are registered respectively by the upward movement and the rotational movement of the TD2 connector while the fifth is registered, on a rotary connector RS1. The selection of the brush of the RS6 connector is made by the position taken by the TD1 connector and for this purpose the contacts associated with the brushes 261 and 263 are connected to the brushes of the RS6 connector, the brush 261 being used according to the type of communication. while the contacts represent five-digit communication and the brush 263 is used for multi-tariff communications.



  For all communications, the first digit transmitted by the recording translator acts on the first group selector such as IGS (fig. 2) to record the type of count to be used, i.e. this digit indicates whether the call must be counted through the counter of the calling subscriber or by the operator or by a device for automatically printing tickets. This figure is determined by connections starting from a contact associated with the chosen brush of the RS6 connector to end in the appropriate conductor.

  <Desc / Clms Page number 38>

 requested as part of the command conductors 1 to 10.



   In general the number of contacts of the banks of the RS6 connector which are used for the purpose of making these distribution connections is less than half of the number of contacts available and it follows that things have been combined in such a way that the RS6 connector banks are capable of carrying two sets of distribution connections. The determination of the use of the distribution connections of the first or of the second part of the banks of the RS6 connector is performed by the brush 264 of the TD1 connector.

   This brush is grounded and some of the bank contacts are connected to the electromagnet of the RS6 connector through a cam contact which is actuated on the 16th contact such that when the brush 264 arrives on such a contact the RS6 connector automatically rotates to its 16th position in order to use the distribution connections of the second part of its bench. However, in the case of a multiple tariff communication for which the determination of the sum to be paid for the communication is carried out automatically, all of one of the banks of the RS6 connector is used to obtain the connection connections. necessary breakdown.



   Let us return again to the case of a local communication, the transmission of the impulses from the recorder translator begins as soon as the second digit is stored. As indicated above, the first digit is used to indicate the type of counting to be adopted while the remaining digits which are transmitted form the number of the called subscriber and are retransmitted without undergoing any translation. For this purpose the brushes 323 and 260 of the TD1 connector, the

  <Desc / Clms Page number 39>

 brushes 325 and 266 of the TD2 connector and brush 272 of the RS1 connector are connected in turn by means of the distribution connections starting from the contacts of the chosen bank of the RS6 connector.

   Thus, for example, each contact of the vertical banks associated with the brushes 323, 325 respectively of the connectors TD1 and TD2 is connected to an appropriate control conductor among those indicated from 1 to 10 while in the bank associated with the brushes 260 and 266 of the same connectors the contacts in each vertical column are connected together and then from there to a suitable conductor among the ten control conductors from 1 to 10. Likewise the contacts 1 to 10 of the banks associated with the brush 272 of the connector RS1, the brush 274 of the RS2 connector and contacts 8 to 17 associated with brush 257 of the RS5 connector are connected to conductors 1 to 10.

   At the end of the transmission of the last series of pulses, a distribution connection acts on the conductor 317 which disconnects the pulse-emitting devices and serves to release the recorder translator and the RTF recorder translator?
We now consider the registration of call numbers whose first digit is 0 and therefore indicates that the call is for a special service.



  By the term "special service" is meant communications to an operator, communications for services such as the speaking clock and also long-distance communications or inter-zone communications.



  To establish long distance or inter-zone calls, the caller must form 8 digits, while for other services only three digits are sufficient. In all cases, however, the TD1 connector which will have reached its 10th level is released, i.e. the first digit is absorbed in all cases /./

  <Desc / Clms Page number 40>

 but an operation takes place in the circuit as will be seen in detail below and will have the effect that the brush 263 will be used instead of the brush 261 to determine which of the brushes of the RS6 connector is to be used.

   The second and third digits are then recorded respectively in the ascent movement and in the rotational movement of the TD1 connector, the fourth and fifth digits respectively in the ascent movement and the rotational movement of the connector. TD2, the sixth digit by the movement of the RS1 connector, the seventh digit by the movement of the RS2 connector and the eighth digit by the movement of the RS5 connector. Furthermore, the TD3 connector automatically assumes the position corresponding to the brushes of the TD1 connector with regard to its upward movement and corresponding to the brushes of the TD2 connector with regard to its rotational movement. The TD3 connector will therefore take a position which results from the first four digits recorded in the recorder translator.

   The purpose of the TD3 connector is to make it possible to transmit one or more digits determining the direction by the recorder translator and also to transmit one or more characteristic digits of the tariff to be applied to the communication.



   The control of the transmission of digits by the recorder translator is also carried out by the RS6 direction control connector when it passes from one contact to another and that in the case of local communication the first digit retransmitted by the The recorder translator has the effect of indicating the way in which the tariff to be applied to the communication must be indicated.



  Then a series of numbers is transmitted and has the effect of controlling the positioning of the connectors of the desk

  <Desc / Clms Page number 41>

 central Mons so that the communication is routed to the office where it must end up last. Then comes the figure determining the class of communication and whose purpose will be explained in detail below. When these digits indicating the direction are transmitted together with the digit determining the type of communication, the numbers of the called and calling subscribers are transmitted to the equipment attached to the outgoing trunk line of the main office in the form of code pulses. . The change in the transmission of the decimal system in code is effected by means of distribution connections starting from the appropriate contact of the chosen bank of the RS6 connector to the conductor 316.

   This has the effect of causing the attraction of relays 224, 225 and
226 in order to allow joint action by the RG5 and RG6 relay groups. Finally after these pulses have been transmitted in code, the tariff figure is transmitted according to the position of the brush 271 of the following TD3 connector.



   After transmission of the tariff digit, the next contact of the direction determining connector is interconnected with conductor 317 to release the logging translator and the logging translator RTF seeker.



   Detailed description of the recorder translator.



   Local communication.



   Receipt of the digit emitted,. A detailed description will now be given of the operation of the recorder translator and for this purpose it will be assumed that the calling subscriber wishes to establish a communication with a subscriber from his own office, ie from Hautrage's office. It will be remembered that the description of the recording translator was given in detail until the recording of the number of the subscriber called and the transmission of the dial tone.

  <Desc / Clms Page number 42>

 invitation to transmit to the calling subscriber through the windings of relays 187 and 188 (fig. 15), the lower windings of these relays being energized by the circuit of the calling subscriber's loop.

   As noted above all the subscribers of the Hautrage office will have the digits 5 and 7 as the first two digits of their call number. Consequently, the first two digits sent by the calling subscriber will be the digits 5 and 7.



   When the first break occurs in the circuit of the line of the subscriber calling the relays 187 and 188 release and by the armature 327 the following circuit will be closed: earth, armature 327, 334, winding of the relay 204 towards the battery. A branch of this circuit also goes through the brush 259 of the RS5 connector in position 1, the winding of the ascent electromagnet 244 of the TD1 connector in two movements and from there to the battery. Relay 204 closes through contact 383 an obvious circuit for relay 203, both of these relays being slow to release so that they remain attracted during the period of a pulse train. The first digit sent by the calling subscriber is therefore recorded by the upward movement of connector TD1.



  At the end of the first pulse train, relay 204 releases after a short period of time and opens via contact 383 the circuit of relay 203. During the release period of relay 203, however, a circuit is closed starting from the earth by the armatures 383, 384, the contact 1 and the brush 258 of the RS5 connector, the armature 330, the winding of the electromagnet 243 of the RS5 connector towards the battery. The electromagnet of the RS5 connector is therefore energized for the duration of the release period of relay 203 after the brushes

  <Desc / Clms Page number 43>

 of the RS5 connector pass to their second position for which the circuit giving the pulses passes through the relay 239 to the rotation electromagnet 245 of the TD1 connector.

   Relay 239 is a slow release relay and is kept pulled for the duration of the pulse train. sions. The third, fourth and fifth digits will be recorded respectively by the operation of the ascension electromagnet 247 and the rotation electromagnet 248 of the TD2 connector and the electromagnet 253 of the RSI connector, the relay 240 remaining attracted while receiving the fourth digit. It is therefore understood that the RS5 connector advances by one step for each digit received so that at the end of the fifth digit the brushes of the connector will be in their sixth position.



   Transmission of impulses by the recording translator according to the decimal system.



   The transmission of digits by the register translator takes place as soon as the second digit is registered and is commanded by the release of relay 239 at the end of the second digit. When releasing relay 239 a circuit is established starting. the earth of the armature 338. of the relay 190 (fig. 15), by the rotation head contacts 385 of the DTl connector in the working position, by the armatures 398, 404, 407 and the winding of the relay 235 to the battery. Relay 235 attracts armature 409 and the latter establishes the following circuit: impulse conductor 399, from an organ giving the impulses, armature 400, rotation head contacts 386 of the TDl connector in their working position, armatures 409, 402, 411 (fig. 13), 414,415, 416, 420, the lower winding of relay 213 towards the battery.

   Upon receipt of the first impulse

  <Desc / Clms Page number 44>

 of the pulse-emitting member, relay 213 attracts in its first stage and closes its armature 421, which has the effect of fully exciting it until the end of the pulse. By fully drawing the relay 213 through the armature 420, it opens its initial excitation circuit by its rest contact and by its work contact transfers the conductor giving the impulses to the winding of the relay 211. The following impulses thereby cause the synchronous operation of the relay 211 which by its armatures 366 and 367 repeat the pulses towards the first group selector by opening the circuit from the relays 209 and 210 towards the pulse receiving relay of the group selector. In addition, through frame 364, relay 211 closes an obvious circuit for relay 212.

   Relay 212 is a slow release relay and is therefore kept attracted for the duration of sending pulses to relay 211. By armature 423, relay 212 closes a circuit from earth to armature 430 of the relay 222 to armature 423 and the winding of relay 215 then from there to the battery.By armature 424 and 425, relay 212 substitutes for the connections to negative and earth normally given by relays 210 and 209, a connection to negative through resistor 435 and a direct earth to improve the pulse circuit to the group selector. The relays 209 and 210 release during the transmission of the pulses but a bypass circuit is provided for the armatures 414 and 415, this shunt circuit passing through the armature 422 of the relay 222.

   The pulses transmitted by the relay 211 to the group selector are repeated by the armature 365 to the group of counting relays RG5.

  <Desc / Clms Page number 45>

 



   It is understood that for the transmission of the pulses to take place when starting from the recording translator, the two conductors must exist from one stage to the other, otherwise one or even the two relays 209 and '210 cannot be attracted.



   Operation of the counting relay group
RG5 according to the decimal system.



   RG5 counting relays: include relays 216 to 221 inclusive arranged to be able to count a number of pulses from 1 to 10. The relays are actuated one after the other up to six pulses, the relay 221 being then maintained :, attracted ;. and relays 216 to 219 inclusive being re-drawn to count the last four pulses. The transmission of the impulses by the recording translator is stopped by a marking given through one of the ten control conductors 1.-10 and passing through the armatures of the counting relays to activate the relay 214. Thus by example suppose that the number 2 is the first number to be transmitted by the recording translator.

   In this case an earth is given in a way which will be given below by conductor 2 of the group of control conductors. Then when the relay 211 attracts with a first pulse, it closes a circuit passing through: earth, armatures 365, 450,449, 446,442, 438, relays 220,219, 218, 217 and 216 respectively, the lower winding of 216 towards the battery.



  Relay 216 draws to its first stage and closes its frame 437 marked "X". At the end of the pulse, the relay 216 draws fully through the two series windings and the armature 437 by an earth at the armature 426 of the relay 212, and by the armature 438 and its rest contact it opens its initial excitation circuit and

  <Desc / Clms Page number 46>

 by its contact to work prepares the excitation circuit for the relay 217. The second pulse causes the operation of the relay 217 in an analogous manner to close its armature 441 marked "X" and then to draw this relay fully. opening by the armature 440 the blocking circuit of the relay 216 which releases. When the relay 217 is attracted, a circuit is closed by an earth to the conductor 2, the armatures 443, 451 and 461, the winding of the relay 214 to the battery.

   The relay 214 attracts and is blocked by the armature 418 towards an earth at the armature 434 and by the armature 416 disconnects the impulse conductor of the relay 211 from where it follows that the continuation of the transmission of impulses is prevented.



  In addition, the relay 214 opens by the armature 417 the blocking circuit of the relay 213 which releases; and by the armature 419 causes an operation of the circuit which has the effect of removing the earth from the conductor 2 and giving it through another conductor in order to control the transmission of the next digit. The relay 213 releases when its circuit is opened by the armature 417 and by the armature 420 it opens at another point the pulse circuit to the relay 211.

   The relay 212 releases after a short period from the moment of the disconnection of the pulse conductor by the relay 211 and opens by the armature 426 the blocking circuits for the counting relays which then release; by reinforcements 424 and 425 it re-establishes the conditions for which relays 210 and 209 are not shunted respectively by conductors 139 and 140 and by armature 423 it opens the circuit of relay 215. Relay 215 releases and by armature 434 opens the blocking circuit of relay 214 which releases and reconnects the con-

  <Desc / Clms Page number 47>

 pulse generator to relay 213 to cause transmission of the next digit.



   RS6 connector for direction determination.



   Certain considerations will now be given on the subject of the arrangements which make it possible to determine the characteristic digit which must be transmitted by the recording translator. As indicated above, this is determined by the connections connecting the contacts of the RS6 direction determination connector to the various conductors and contacts grouped in the vicinity of the banks. Typical examples are represented by the connections shown in figs.



  19 - 26 and in this connection it should be noted that in general each brush of the connector can be used to control the establishment of two types of communications.



  Thus, for example, the broom 226 controls the establishment of local communications, that is to say communications to subscribers of Hautrage as well as communications to subscribers of Mons. An exception arises for 8-digit telephone numbers for which it is necessary to use an entire bank.



   As regards the transmission of the digits determining the direction by the recording translator, this is controlled in two ways. In the first place the figures which are / same for a determined category of communications which '.' either the destination office are determined by a direct connection between the appropriate bench contact of the connector and one of the conductors 1 to 10, while those for which ... they are variable according to the different offices and for the same communication category, the connection is made directly to one of conductors 1 to: 10

  <Desc / Clms Page number 48>

 through the brushes of the various connectors TD1, TD2, TD3 and so on.

   Thus, for example, communications to offices in the Mons urban region are all routed by the Mons office and the junctions to these offices are obtained through the intermediary of the same connector from the Mons office, namely the LS connector (fig. . 2). In the present case the LS connector will be reached by the transmission of the digits 9 and 7 and from there due to the transmission of these two digits direct connections are made to suitable conductors of the group of conductors 1 to 10. The various junction lines are, however, obtained by different levels of the LS connector and it follows that the following figure will be variable and that an indirect connection will be used.



   For the understanding of the case considered, reference is made to FIG. 19 which represents the distribution connections made from the brush 296 of the RS6 connector. It should be noted that the selection of the appropriate brush of the RS6 connector is effected by the position taken by the brushes 261 and 263 of the TD1 connector according to the type of communication requested. Connections are made from the bank contacts associated with these brushes to the appropriate brushes of the direction determining connector therefore following the first two digits recorded by the logger translator.



   As noted above the first digit transmitted determines the counting mode to be used and in this case since the count must be performed by the counter of the calling subscriber in the usual manner, the digit 2 will be transmitted. Since it will always be A-

  <Desc / Clms Page number 49>

 In the case of a local communication, the first contact associated with the brush 1 will be connected directly to the conductor 2 belonging to the group of conductors 1 to 10, and since the communication is local, no figure for determining the direction will be transmitted and more since the Eautrage office has less than 1000 lines, only 3 digits should be transmitted afterwards.

   Since the second, third and fourth contacts are connected with the brushes of connectors TD1 and
TD2, the position of these brushes representing the third, fourth and fifth digits emitted will be the brushes
325, 266 and 272.



   In detail, when the brush 296 of the connector
RS6 is on the first contact, an earth is given to armature 472 of relay 192 (fig. 15) is extended by armature 412 and its rest contact, the armatures
471,410 (fig. 7), 401, 328, brush 261 on contact (5,7), brush 296 from RS6 connector on contact 1, and the distribution connection to conductor 2 and from there as indicated in this which concerns the operation of the RG5 counting relay group. When relay 214 is attracted at the end of the transmission of digit 2, it establishes the following circuit: earth on contact
419, winding of relats 208, winding of electromagnet 326 from RS6 connector to battery.

   The electromagnet 326 is kept attracted until the release of the relay 214 when its circuit is open and when it de-energizes it advances the brushes of the connector to contact 2. The relay 208 attracts by the circuit of. excitation of the connector electromagnet and by the contact 411 disconnects the conductor giving the pulses of the relays 213 and 211 until the connector is advanced.

  <Desc / Clms Page number 50>

 



   The contact 2 associated with the brush 1 is connected to one of the conductors of the group 309 to 315 which are connected to the various brushes of the connectors whose positions represent the numbers sent by the calling subscriber.



  In this case contact 2 is connected to vertical conductor 311 and thence to brush / 325 of connector TD2 through head contacts 390. Suppose the called subscriber number is 57.146. When the broom 325 is engaged it will be on contact 1 of the vertical bench and will give access to conductor 1 of the group of conductors 1 to 10 of cable 290. In this way the number 1 will be transmitted from the recording translator to the group selector. lGS (fig. 2). The group selector starts an automatic search on its first level for a free final selector (not shown). The brush 296 of the RS6 connector then passes over the third contact which is connected to the conductor 312 connected to the brush 266 of the TD2 connector.



  As a result of this connection the conductor 4 will be earthed and the digit 4 (tens) will be transmitted to the final selector. Finally the contact 4 associated with the brush 296 of the RS6 connector is connected to the conductor 313 connected to the brush 272 of the RSI connector and it results that the last digit transmitted is the number 6. The transmission of the digits is then terminated and the brush 296 of the RS6 connector advances to contact 5 which is connected to the conductor 317. A circuit is then closed from the brush 296 of the RS6 connector earthed by the conductor 317, the armature 474 and its rest contact (fig. II) and frame 358 to conductor 142 leading to the translator-recorder finder.



     Release of the translator-recorder.



   When the recording translator is disconnected

  <Desc / Clms Page number 51>

 of the recorder translator finder, relays 209 and 210 release as indicated above (fig. 13) as well as relays 187 and 188 (fig. 15). The release of these last two relays opens the circuit of the relay 189 and during a period of release of this relay a circuit is closed by the earth to the armature 327 through the armature 334, the winding of the relay 204 (fig.ll), towards the battery. The relay 204 causes the pull of the relay 203 and when the relay 189 releases and the circuit indicated above is open, a pulse is transmitted during the release time of the relay 203 to the electromagnet 243 of the RS5 connector. The RS5 connector therefore advances to contact 7.

   Releasing relay 189 opens the circuit of relay 190 which releases and opens the circuit of relay 191. Relay 191, when releasing, closes by armature 483 the following circuit: earth, armature 483, winding of relay 550, armature 332, contacts of ascension head 388 actuated from the TD1 connector in its working position, release electromagnet 246 towards the bat: -:;, rie. The release solenoid 246 is therefore actuated and the TD1 connector returns to its normal position. Rotation head contacts 385 are therefore open and relay 235 releases thereby disconnecting brush ground 261 from connector TD1.

   In addition, reestablishing the ascension head contacts 388 extends the earth indicated above to the release delay 249 of connector TD2 through the actuated ascension head contacts 389. The TD2 connector therefore returns to its normal position and earth is again given through the ascension head contacts 389 of the TD3 connector in their rest position, the ascension head contacts 393 of the

  <Desc / Clms Page number 52>

 TD3 connector in their rest position, the brush 275 the bench contact and multiplication to this brush, the switch contacts 486, the electromagnet 253 from the RS1 connector to the battery.

   The RSI connector therefore passes over the eleventh contact and therefore the above excitation circuit is further extended by the brush 275 and the conductor 295 in turn towards the electromagnets 254,255, 256, 243 to advance the RS2, RS3 and RS4 connectors up to their eleventh or twenty-fifth contact and to return the RS5 connector to its normal position. When the RS5 connector returns to its normal position, the circuit is further extended through the head contacts 381 in their rest position, the armature 481 of the relay 191, the head contacts 489 of the RS6 connector , the switch contacts 490, the winding of the electromagnet 326 and from there to the battery. The RS6 connector therefore returns to its normal position for which the head contacts are open and the circuit indicated above interrupted.

   The recorder translator is then fully released and can be used for another communication.



   Communication to Mons.



   It is understood that the operation of the recorder translator will be the same for all communications until the reception of the impulses transmitted by the calling subscriber and it follows that in the description of the various types of communications which can be established it is assumed will be that the recorder translator has been entered and the calling subscriber number has been recorded there.



   Receipt of transmitted digits.



   A call to Mons is a local call or in the same zone or at a simple rate and it follows

  <Desc / Clms Page number 53>

 that it is only necessary for the calling party to send five digits. Referring to fig. 19, however it will be seen that the distribution connection to establish a communication towards Mons starts from the 16th contact of the brush 296 of the RS6 connector for determining the direction and it is therefore necessary that this connector advance to its 16th contact before the transmission of digits by the recorder translator.



   Referring to the Mons subscriber numbering system given above, we will see that the first digit that will be sent by the calling subscriber will be the number 2 and that it will be followed by the numbers 1 - 6, 9 or 0.



  Receipt of the number 2 will cause the TD1 connector to be placed on the second level, and the second number which for example may be the number 5, will cause the TD1 connector to be placed on the fifth contact of its second level. Contacts 1 - 6 and 9 - 0 of level 2 of the bank associated with the brush 264 are multiple together and connected through the cam contacts 491, the switching springs 490, the winding of the electromagnet 326 from the RS6 connector to battery.

   Consequently when the relay 239 releases at the end of the rotational movement of the connector the following circuit is established: earth, contact 338 (fig. 15), rotation head contact 385 of the TD1 connector in their working position, armatures 398 , 404, armature contact 407, relay winding 234, armature 408, brush 264, contact (2,5), cam springs 491, switch contacts 490, winding of electromagnet 326 to battery .



  The electromagnet 326 attracts through the auto-switch circuit shown above and advances the brushes from the RS6 connector to the 16th contact when the cam springs

  <Desc / Clms Page number 54>

 491 are open and the solenoid excitation circuit is interrupted. It should be noted that a parallel circuit is also established through the opening 407 of the relay 234 (fig. 7), the winding of the relay 235 towards the battery. This relay, however, has a high resistance compared to that of relay 234 and therefore does not attract through this circuit. The pulse circuit to relays 213 and 211 from pulse lead 399 is therefore held open by contact 409 of relay 235 until connector RS6 has reached the 16th contact.

   When the drive circuit of the electromagnet 326 is opened, the relay 235 attracts however to this adorn to establish the pulse circuit and the transmission of the digits can therefore begin.



   Transmission of impulses by the recording translator.



   Since a communication to 1 / Ions is a single tariff communication the first digit retransmitted by the recorder translator will be the digit 2 as it has been described for a local communication at the Hautrage office. The second digit transmitted will bring the first group selector 1GS up to the level at which a junction line of "poor" quality to!, 'Ions is accessible and in the case shown in the diagram of fig. 2 this second digit will be the number 9. The contacts 16 and 17 will therefore be connected respectively to the conductors 2 and 9 'of the control conductors. The communication is therefore routed to the incoming IS selector at the Mons office.

   Since Mons has a capacity of 3600 lines, it will be noted that four digits should then be transmitted by the recorder translator in order to bring

  <Desc / Clms Page number 55>

 in position the incoming selector IS, the local selector LS, and the appropriate final selector (not shown). Thus, contacts 18, 19, 20 and 21 will be linked to conductors 310, 311, 312 and 313 so that the second, third, fourth and fifth digits sent by the calling subscriber are retransmitted without translation to the Mons office. Finally, contact 22 will be connected to conductor 317 in order to allow the recording translator to become free as described above.



   Communications for which the first digit is O.



   Common operation for all calls.



   When the first digit transmitted by the calling subscriber is the digit 0 the TD1 connector rises to the tenth level and therefore a circuit is closed during the period of release of the relay 204 from the earth to the ground. 'armature 382 of relay 204 and its working contact (fig. 7); armature 495, vertical broom 324, tenth vertical bank contact, armature 497, coil of relay 238 and thence to the battery.



  The relay 238 attracts and blocks through the armature 331 by an earth to the armature 338 (fig. 15). The relay 238 by attracting opens by the contact 330 the circuit of the electromagnet 243 of the RS5 connector in order to prevent this connector from passing its brushes from the first to the second contact. In addition, through armature 332, relay 238 closes the following circuit for release solenoid 246 of connector TD1: earth to armature 382. and its rest contact (fig. 7), armatures 496 and 332, ascension head contacts 388 actuated, windings of the release electromagnet 246 towards the battery.



  The TD1 connector therefore returns to its normal position. '' In addition, relay 238 closes by armature 330

  <Desc / Clms Page number 56>

 a retort circuit follows during the release period of relay 203: earth at armature 383, armature 384, contact 1 and brush 258 of the RS5 connector, armatures 330, 492, lower winding of relay 237 towards the battery.



  The relay 237 attracts and blocks by its two windings in series with the armature 493 and by the armature 492 and its contact at work it prepares a circuit for the electromagnet 243 of the RS5 connector.



   The operations indicated below occur each time the digit transmitted by the calling subscriber is the digit 0, but the following operations of the recorder translator depend on the second digit transmitted.



   Operation in case of individual communications.



   As noted above there are two general categories of call numbers beginning with the digit "0". These are first the three-digit call numbers for establishing a call to an operator or to obtain other services and then the eight-digit call numbers for establishing calls to offices in other areas. The following considerations relate to the first type of communication.



   Communicatinons with three call digits.



   Communications having three digits per call number can also be used according to two categories, those for which the second digit is "0" and those for which the second digit is other than "0". In the first category of this sub-division are included communications to an operator (call number 001 for the interurban operator and 004 for the international operator) and communications for certain services (call numbers

  <Desc / Clms Page number 57>

 005 - 008 inclusive). In the second sub-division are included the communications for the speaking clock (call numbers 091 and 092).



     Communication having as second digit "0".



   When the second digit transmitted is "O", the TD1 connector rises again to the tenth level and then moves to this level following the third digit transmitted. As before, relay 235 attracts from the first rotation step of the connector. We will first of all consider the case where the third digit is either "one" or "four", ie a call for an interurban operator or an international operator. Contacts 1 and 4 of the tenth bank contact level associated with brush 263 are connected together and brush 297 of the RS6 connector.

   The establishment of these two communications is controlled by the intermediary of the contacts 1 to 11 associated with the brush 297 and it follows that no circuit is closed by the brush 264 for the electromagnet 326. of the RS6 connector to advance the connector brushes to contact 16.



  An earth is then given to brush 297 through the following circuit: earth, armature 472 (fig. 15), armatures 412, 471, 410, 328 and its actuated contact, brush 263 from the TD1 connector on contact 1 or 4 towards the brush 297 from the RS6 connector. The conductor 399 giving the pulses is also extended upon releasing the relay 239 to the group of relays RG7 to allow the transmission of the digits to be started by the recording translator.



   Given the digits which are to be retransmitted in this case, the call will be counted by an operator in the usual way. Accordingly the. pre-

  <Desc / Clms Page number 58>

 The first digit retransmitted by the recording translator will be the digit 1 and for this purpose if we refer to fig. 20, contact 1 associated with brush 297 of the RS6 connector is connected to conductor 3 of the control conductors. The second digit transmitted will be used to determine the position of the first group selector on a "poor" quality trunking line. leading to the Rions office where the operators are located, and for this purpose the second contact associated with the brush 297 is connected to the conductor 9 in the same way as for a communication to Mons as described above.



   The third digit transmitted by the recording translator is used to bring the incoming IS selector (fig.



  2) from the Tvions office on a level giving access to the special TS service selectors. Following the schematic representation of the junction circuit shown in figure 2, this number will be the number "8", and it follows that the contact 3 associated with the brush 297 is connected to the conductor 8 of the control conductors. The level to which the selector TS will rise is determined by the third digit sent by the calling subscriber, that is to say by the second digit recorded by the translator-recorder, and it follows that the contact 4 associated with the brush 297 is connected to the conductor 310 which is directly connected to the brush 260.

   Thus for example if the third digit emitted by the calling subscriber is the number "1", the contact on which the brush 260 will stop will be connected to the conductor 1 of the control conductors and it follows that the fourth digit transmitted by the translator-recorder will be the digit "1". If, however, the third digit sent by the calling subscriber is the digit "4", then this digit will be transmitted by the recording translator. In the first case, the TS connector will rise up to the first level and in the second case up to the fourth level giving access by one. and the other of

  <Desc / Clms Page number 59>

 these levels to operator positions.



   The fifth contact associated with the brush 297 of the RS6 connector is connected to the conductor 316 and an earth given to this conductor causes the attraction of the relay 224. The relay 224 by the armature 454 closes the following circuit: earth, armature 454, 462, winding relay 214 to the battery. Relay 214 through contact 419 closes a drive circuit for electromagnet 326 as described above. In addition an earth is also given by the contact 419 through the armature 453 of the relay 224 to the upper winding of the relay 225. The relay 225 is slow to pull and closes a first. blocking circuit by its armature 457 marked "X" in series with the winding of relay 226 by an earth at contact 339 (fig. 15).

   When the relay 225 draws fully, it opens the circuit of the relay 214 through the armature 462 which releases and the armature 419 opens the excitation circuit of the electromagnet 326 which has the effect of advancing the brushes. from the RS6 connector to the next contact, ie up to the sixth contact. The relay 226 attracts by the blocking circuit indicated above and the relays 225 and 226 by their attraction causing the co-operation of the counting relays RG5 and the counting relays RG6 to enable the digits to be coded. remainder transmitted by the recording translator.



   The remaining digits to be transmitted by the recorder translator include the number of the calling subscriber and a description will now be given of this transmission from the point of view of the RS6 direction determination connector, a description of the arrangements allowing for transmit impulses in

  <Desc / Clms Page number 60>

 code being postponed.



   It will be noted with reference to FIG. 20 that the associated contacts 6 and 7 which brushes 297 of the RS6 connector are extended by the armatures 501 and 500 of the relay 207 in their rest position up to the conductors 318 and 319 / that the contacts 8, 9 and 10 are connected directly and respectively to conductors 320, 321 and 322. As regards conductors 318 and 319, these are permanently connected, the first with conductor 5 of the group of conductors 1 - 10 and the second with the conductor 7 of the group of conductors 1 - 10 through the armature 498 of the relay 201 and its rest contact and the conductor 499 to the conductor 7 of the group of control conductors.

   These operations, as explained previously, are always the same since the maximum capacity of the Hautrage office is only 600 lines and consequently the figure of tens of thousands and that of units of thousands of all subscribers are the same. . With the brush 27 of the RS6 connector on the contact 6 the earth is therefore given by the conductor 318 to the conductor 5 of the group of control conductors and from there through the cable 282; cable 287, cable 288, armature 465 of relay 226, coil of relay 232 and relay group RG6 to the battery. The relay 226 attracts and causes the transmission of the digit 5 under a code form.

   Likewise when the brush 297 passes over the contact 7 a ground is given through a similar circuit, the contact 497 of the relay 226, the windings of the relays 229 and 227 in series towards the battery. These relays attract to cause the transmission of the number 7 in the form of a code. The

  <Desc / Clms Page number 61>

 conductor 320 is connected through the attracted armature 508 of the relay 202 to pass through the attracted armature 362 of the relay 200, the armatures 509 and 510 in their rest position towards the conductor 1 of the control conductors corresponding to the hundreds digit of the calling subscriber number (57.109) and from there through cable 295 and cable 282 to the winding of the appropriate RG6 group relays as described above.

   Conductors 321 and 322 are connected respectively to brushes 276 and 279 of the RS3 and RS4 connectors and from there through cable 282 as described above to the appropriate relays of the RG6 group. It is therefore understood that as soon as the brush 297 of the RS6 connector passes from the sixth to the tenth contact, the number of the calling subscriber will be transmitted in code via the junction line to the central office in Mons. At the end of the transmission of the digits, the brush 297 will advance to the contact which is connected to the conductor 317 to cause the release of the recording translator as described above.



   The above description relates to communications whose call numbers are 001 and 004. As noted previously, however, provisions are made to be able to route the communications to other services if these communications also have two first digits "OO". Since however the count of communications is performed by an operator, it has been found easier to route these communications through another brush of the RS6 connector. The third digit for these communications can be one of the digits 5 to 8 and therefore a connection will be made between contacts 5 to 8 of the tenth level of the bank associated with the brush 263 of the controller.

  <Desc / Clms Page number 62>

 TD1 player. to brush 298 of the RS6 connector.

   In addition the first part of the bench is used for communications and it follows that no connection is made from the contact on which the brush 264 of the TD1 connector is in position to lead to the electromagnet 326 .



   Let us now refer to fig. 21 which represents the distribution connections for a communication of this category, it will be noted that contact 1 is connected to conductor 1 of the group of control conductors so that the first digit transmitted will be the digit 1 and will indicate that the count is to be carried out by an operator. The next two contacts are connected respectively to conductors 9 and 8 of the control conductors in order to ensure the routing of the communication to the TS connector of the Mons office. Contact 4 connected to conductor 310 which is directly connected to brush 260 of connector TD1 so that the 3rd digit transmitted by the calling subscriber is retransmitted without being translated so that the TS connector rises to the appropriate level.

   Finally, contact 5 is connected to conductor 317 to cause the release of the recorder translator.



   Second digit 9.



   If the second digit emitted by the caller is number 9, this means that the call is intended for the speaking clock. The third digit sent will be 1 or 2 depending on whether the subscriber wishes the time to be given to him in French or in Flemish. The TD1 connector will therefore rise to the 9th level and will begin to rotate until contact 1 or 2 of this level. These two contacts are connected together to the bench associated with the brush 263 and this multiple connection

  <Desc / Clms Page number 63>

 tiple ends at brush 299 of the RS6 connector. Referring to fig. 22 It should be noted that the distribution connections for the routing of a communication towards the speaking clock are arranged on the first half of the bank contacts and it follows that no circuit will be closed by the brush 264 for the electromagnet 326.



   It will be seen that in this case the communication will be counted by the counter of the calling subscriber and it follows that the contact 1 associated with the brush 299 of the RS6 connector will be connected to the conductor 2 of the control conductors.



   The speaking clock is in the present case placed at the central office in Mons and it follows that the second number which controls the operation of the first group selector will again be the number 9. Referring then to fig. 2 'The speaking clock is reached by the tenth level of the TS selector and it follows that the contacts
3 and 4 associated with the brush 299 of the RS6 connector will be connected respectively to the control conductor 8 and 0.



   Another discrimination digit must then be transmitted following the third digit in order to connect the speaking clock which will have to give the time in the desired language and it follows that conductor 5 is connected to the conductor
310 which in turn is connected to the broom 260. This number acts on a connector (not shown) of the
Mons in order to choose the appropriate speaking clock. Finally, the sixth contact associated with the brush 299 is connected to the conductor 517 to cause the release of the recording translator.



   Communications with 8 digits.



   Communications in transit.



  * If the second digit is 1 - 8 it indicates that the communication is intended for an office in another zone. In this case when the second digit has been entered

  <Desc / Clms Page number 64>

 Recorded by the upward movement of the TD1 connector and that the relay 204 has released, the following circuit is closed: earth at armature 382 and its rest contact (fig. 7), contact on and armature 495 of relay 237 , vertical brush 324, the bank contact up to which this brush has risen, the armature 494 of the relay 237, the winding of the relay 236 towards the battery. Relay 236 attracts and blocks by armature 403 in parallel with relays 237 and 238. Relay 236 opens through armature 404 the circuit of relay 235 in order to prevent the logger from starting the transmission of digits.

   The 4th and 5th digits sent by the calling subscriber are recorded by the movement of ascent and rotation of the TD2 connector and the 6th digit by the movement of the RS1 connector as described previously.



  At the end of the reception of the 6th digit the brushes of the RS5 connector pass over the 6th contacts and the 7th set of pulses is therefore repeated towards the electromagnet 254 of the RS2 connector. The brushes of the RS5 connector then pass over the 7th contacts and the 8th digit sent by the calling subscriber is repeated by contacts 327 of relay 187 (fig. 15) towards the electromagnet 243 of the RS5 connector as follows: earth, armatures 327, 334, brush 259 of the RS5 connector on contact 7, armature 523 of relay 205, contact 7 and brush 258, armatures 330, 492 in their working position, winding of the electromagnet 243 towards battery. The 8th and last digit is therefore recorded by the RS5 connector.



   As noted above for a communication intended for an office in another zone, the TD3 connector is automatically brought in its upward movement to a position corresponding to the resulting

  <Desc / Clms Page number 65>

 the first two digits recorded in the recording translator and with regard to its rotational movement to a position corresponding to the 3rd and 4th digits recorded by the recording translator.

   Relay 236 prepares the circuit to actuate connector TD3, this circuit being established as follows when storing the fourth digit: earth at armature 406 of relay 236, armature 515 of relay 240, head contacts rotation head 391 actuated, rotation head contacts 395 of connector TD3 in their rest position, ascension head contacts 394 in their rest position, winding of relay 241 towards the battery. Repeat 222 (fig. 13) is also operated in parallel with relay 241.



  The relay 222 through the armature 431 connects the pulse conductor 516 from a pulse generator member to the relay 213, the circuit being established as follows: pulse conductor 516, the armature 431, the contact and the armature 411, the armature 427 and its working contact, the armatures 416 - 420, the winding of the relay 213 towards the battery. The relay 213 attracts .as previously described and by the armature 420 and its working contact extends the pulse conductor to the relay 211. The relay 211 attracts and establishes the circuit giving the pulses by the armature 429 of the relay 222 , armature 518 and its make contact, winding of relay 241, winding of ascent electromagnet 250 from connector TD3 to the battery.



  The relay 211 and the electromagnet 250 therefore attract in synchronism, It will be noted that the release 222 by the armatures 432 and 434 establishes a shunt circuit of the armatures 367 and 366 of the relay 211 to prevent pulses from being transmitted to the first selector of group. In addition, the relay 222 by the armature 428 gives

  <Desc / Clms Page number 66>

 an earth to the brush 300 of the RS6 connector through the brush of which the establishment of communication is checked. This circuit is established as follows: earth at armature 472 of relay 192 (fig. 15), armature 412, 471,428, 405 to brush 300.



   The determination of the number of steps to be taken by the connector TD3 is carried out by the brush 262 of the connector TD1. Referring to fig. 23 note that the contact 1 associated with the brush 300 of the RS6 connector is connected to the conductor 303 which is directly connected to the brush 262. The contacts associated with the brush 262 are connected to the appropriate conductors of the group of ten conductors 1 - 10 and therefore depend of the conductor which is connected to the particular contact on which the brush 262 is located so that the connector TD3 will execute this number of steps vertically, the control being carried out through the cable 285 and the cable 282 passing through by the RG5 counting relays in a manner precisely similar to that described with regard to the transmission of digits according to the decimal system by the recording translator.

   



  The relay 214 (fig. 13) will therefore attract when the TD3 connector has taken the required number of steps and through the armature 419 it will close the circuit of the electromagnet 326 to advance the brush 300 to the second contact. . The initial circuit of relay 241 is interrupted as soon as the TD3 connector leaves its rest position, but this relay is kept attracted until the end of the upward movement by the impulses transmitted through its upper winding to the electro - ascent magnet 250. When the TD3 connector leaves its rest position, however, the initial excitation circuit of relay 241 passes through the lower winding of the

  <Desc / Clms Page number 67>

 relay 242 and through the ascension head contacts 394 in their working position.

   The relay 242 attracts and through the contacts 519 prepares the pulse circuit for the rotation electromagnet 251. When the relay 241 releases at the end of the upward movement this pulse circuit is established by the. intermediary of the armature 517 of the relay 241 and the TD3 connector starts to rotate on this level which it has reached. The rotational movement of the TD3 connector is determined by the position of the brush 267 of the TD2 connector. The contacts associated with this brush are connected to the appropriate conductors of the group of conductors 1 to 10 and the rotational movement of connector TD3 is controlled in the same way as the upward movement, contact 2 associated with the brush 300 the RS6 connector being connected to conductor 304 and thence to brush 267.

   The relay 242 by the armature 520 is used to maintain the circuit of the relay 222 during the rotational movement, the initial circuit being open to the rotation head contacts 395. At the end of the rotational movement of the TD3 connector the brushes of the RS6 connector switch to the third contact and relay 222 releases.



   Releasing the relay 222 causes by the ar- rature 431 the disconnection of the pulse conductor 616 to the relay 211. Another pulse conductor 528 is however connected in order to transmit the digits by the recording translator, through the rotation head contacts 396 of the TD3 connector in their working position (fig. 9) to the armature 411 of the relay 208 .. It should be noted that the circuit by which an earth is given to the brush 300 is opened by the armature 428 when releasing relay 222. The

  <Desc / Clms Page number 68>

 The circuit is however maintained through the rotation head contacts 397 which close during the first rotation step of the TD3 connector to bypass the armature 428.

   The transmission of the impulses by the recording translator then begins and the first digit is controlled by the brush 300 of the RS6 connector in position 3. We now refer again to fig. 23 it will be seen that the contact 3 is connected through the armature 504 and its rest contact to the conductor 3 of the control conductors since the determination of the sum to be paid for the communication will be carried out automatically. After the transmission of this digit, the next four digits transmitted have the effect of controlling the routing of the communication to the central office of 1.ions and through this central office.

   As a result, contact 4 is connected to conductor 0 of the control conductors to advance the first group selector 1GS to the tenth level on which it chooses a free trunk line of "good" quality towards the central liions office. As previously noted the next digit will be 8 in order to advance the incoming IS selector from the Lions office to its 8th level.



  The incoming selector automatically chooses on this level a TS selector for special services which is free.



  Of; communications to other zones are routed through levels 2 and 3 of this selector depending on whether the communication is intended to pass through the central office in Brussels or through the central office in Charleroi. As a result, the following figure will be variable such that the contact 6 associated with the brush 300 will be connected to the conductor 305 which is directly connected to the brush 269 of the TD3 connector. The position taken by this brush is used to control via the conductors of

  <Desc / Clms Page number 69>

 controls the transmission of either digit 2 or digit
3 depending on the destination of the call, from which it follows that the selector TS of the special services of the Mous office rises to the second or third level on which it automatically searches for a free RG relay group.

   The next number to be retransmitted determines whether the trunk line from the central office in Mons, which will be used, will be of "good" or "poor" quality. As noted previously, it depends on the receiving office and also whether repeaters are used for this communication. Suppose that a trunk line of "good" quality is to be used as determined by the brush 270, the transmission of the following digit will have the effect of activating the TLFI finder of the trunk line circuit which will begin automatic research. trunk line control TLCC. The direction of communication through the Mons office is then established 'and the other digits are transmitted in code to the Mons office.

   Consequently, the contact 8 associated with the brush 300 is connected to the conductor 316 to cause the circuit operations described previously and which result in the transmission of the pulses in the form of a code. The next seven contacts, that is to say the contacts 9 to 15 associated with the brush 300 are connected respectively to the leads 309 to 315 inclusive which are directly connected with the ascent and rotation brushes 323 and 260. of connector 1D1, to the ascent and rotation brushes 325 and 266 of the TD2 connector and to brushes 272,274 and 257 of the RS1, RS2 and RS5 connectors on which from the second to the eighth digit are recorded among those sent by the calling subscriber .

   Of these figures, the first two are characteristic of the zone and the following two of the destination office of this zone while

  <Desc / Clms Page number 70>

 the other pulses indicate the number of the called subscriber. The control digit used when the brush 300 is on contact 16 is only used in certain circumstances as will be described below, but for normal communication this digit is not transmitted. The contact 16 is therefore connected by the armature 503 of the relay 207 and its rest contact, the armature 527 of the relay 206 and its rest contact to the conductor 507 (FIG. 10).

   An earth is given through the brush 300 and has the effect of causing the energization of the relay 235 which by the armature 529 closes a circuit which makes the brush 300 advance to contact 17 without any number being transmitted. This circuit will be detailed below. The other digits to be transmitted then by the recording inductor represent the number of the calling subscriber and the tariff to be applied to the call. The transmission of the digits representing the number of the calling subscriber takes place as previously described except that the distribution connection between the contact 17 and the conductor 318 which controls the transmission of the tens of thousands digit of the number of the telephone. called subscriber, passes through the contacts 502 and its idle contact, the purpose of this distribution connection being explained below.

   Finally, when the number of the calling subscriber has been transmitted, the brush 300 passes over the contact 22 which is connected to the conductor 308 connected directly to the brush 271 of the TD3 connector. This with the aim of transmitting a figure which is characteristic of the tariff to be applied to the communication and it will be noted that from what has been indicated above that this figure will depend on the zone to which the communication. must be routed and from the destination office

  <Desc / Clms Page number 71>

 of this area. Finally, contact 23 is connected to conductor 317 to cause the release of the translator-recorder as previously described.

   Another method of operating for calls where the first digit is "0" is to have the first group selector go to an unoccupied "good" quality trunk line going to Mons while the digit " O "is absorbed by the recording translator. The number indicating the counting mode to be used is then transmitted / to the first group selector. This method of operating considerably reduces the occupation time of the junction. The modifications needed to make this transformation are minimal and will be easily apparent to those skilled in the art.



   The possibility is provided for calls at multiple tariffs to be able to inform the calling subscriber if he so desires of the total price of the call.



  In. for this purpose he is instructed to form an additional digit by means of his disk after having emitted the call number. A full description of this feature can be found in our related N Z. 86 B Patent Application.



   'Modification when communications are established by a manual attendant.



   As we noticed previously when an operator of a manual office of Blaton for example seizes a translator recorder of the office of Hautrage to establish communications at multiple tariff or iterzones or communications towards an interurban or international operator, the communication is counted by the manual operator and for this purpose provisions are made to modify the connections

  <Desc / Clms Page number 72>

 distribution starting from the contacts associated with the appropriate brushes of the RS6 connector.

   It should be noted that when the recording translator is entered by a manual operator position, that the backup battery gives a negative by the recording translator finder / through the conductor 137 to cause the attraction of the relay 186, the rectifier 514 being arranged such that the relay is not actuated when normal battery voltage is applied through this connector.



  The relay 186 by attracting is blocked by its armature 513 marked "X" and by a ground at the armature 344 of the relay 190; by armature 512 it opens its initial excitation circuit; by the armature 510 it closes an excitation circuit for the relay 197 in order to prevent any operation of the relays 198 to 202 and of the RS3 and RS4 connectors which normally store the number of the calling subscriber and by the armature 509 it closes a circuit for relay 207.



  The relay 207 attracts and by the structures 500 to 507 modifies the distribution connections starting from certain contacts associated with the brushes 297, 300 and 303.



   We now consider the effect of the attraction of relay 207 with respect to the distribution connections from the contacts associated with brushes 297 and 300, those for brush 303 being considered hereinafter.



  By first referring to the brush 297 we will remember that the contact 6 is connected by the armature 501 of the relay 207 and its rest contact to the conductor 318 to cause the code transmission of the tens of thousands digit of the number of the calling subscriber. Likewise the contact 7 is connected by the armature 500 and its rest contact to the conductor 319 to cause the transmission of the thousand units digit of the calling subscriber number. When

  <Desc / Clms Page number 73>

 the communication is established by a manual operator the caller's number will however not be transmitted but instead of these digits a special digit is transmitted to indicate to the long distance or international operator that the call is to be established by an operator of 'a manual office.

   This special figure is figure 1 and it follows that a distribution connection is established from contact 6 by armature 501 in its working position to conductor 1 of the group of control conductors. No further transmission is required at this time from the logging translator and therefore contact 7 is connected by frame 500 and its working contact to conductor 317 to release the logging translator.



   With regard to the brush 300, it will be remembered that contact 3 is normally connected by armature 504 and its rest contact to conductor 3 of the group of control conductors to cause the transmission of the digit in order to give an indication to the first selector. group about the counting mode that will be used. Since the communication is counted by a manual attendant when the communication is established from a manual office, the attraction of the relay 207 causes the connection of contact 3 by frame 504 and of its working contact to driver 1. hence it follows that the number 1 is transmitted by the recording translator.

   In addition the contact 16 which is normally connected to the armature 527 will now be connected by the armature -503 and its working contact to the conductor 9 of the group of control conductors, to cause the transmission of the number 9 indicating that the communication is established by a manual attendant. In addition, contact 17 which is normally t1

  <Desc / Clms Page number 74>

 connected by the armature 502 and its rest contact to the conductor 318 to cause the transmission of the tens of thousands digit of the calling subscriber's number, is at this moment connected by the armature 502 and its contact at work to the conductor 317 to trigger the release of the recording translator.



   It is possible to combine things so that the special figure is used only in the event that the subscriber wishes the cost of the call communicated to him. It is understood that if the call comes from a manual office, that the communication will be counted in the usual way by the operator making the call and it follows that no characteristic tariff figure will be transmitted. . This supposes a waste of time since the RS6 connector for determining the direction must still pass on this contact. Currently there will normally be five characteristic tariff digits with the possibility of using a sixth when Blaton is transformed into automatic and with reference to fig. 18 it will be seen that six digits can be transmitted without using the fourth pulse of the cycle.

   It follows that by using the figure "0" for example as a manual indication, it can be transmitted instead of the characteristic tariff figure, thereby saving time.



   Transmission of pulses in code form by the recording translator.



   It will be remembered that the circuit giving the pulses leaving the recording translator towards the first group selector consists in extending the negative and the positive through the windings of the relays 210 and 209 respectively towards the positive and the negative of the first group selector. , the negative

  <Desc / Clms Page number 75>

 therefore giving on the positive conductor. When the transmission of the pulses takes place, the negative and the positive are replaced in the recording translator by the negative through resistor 435 and a direct earth, the pulses being controlled by contacts 366 and 367.



   When the pulses in code form are to be transmitted, each digit is represented by the cyclical operation of four of the counting relays of the RG5 group. Normally the sequence of operations of these four relays will include the transmission of four pulses to the first group selector but due to the attraction of relays 225 and 226 the effect produced at this time is to cause the removal of some of these. impulses with regard to their transmission by the positive wire, those transmitted by the negative conductor not being affected. The adopted code is shown in fig. 18 in which the numbers in the left vertical column represent the digits and the numbers in the upper row represent the digit pulses.



  Thus if the number 5 is to be transmitted the first and the third pulse of the cycle will be deleted; the second and the fourth being transmitted and so on for the other digits.



   The way in which this code transmission is carried out will now be taken into consideration. When pulling relays 225 and 226, the RG5 group counting relays will be disconnected from control conductors 1 - 10 by fittings 460 and 461. In addition, conductors 1 - 10 of cable 288 will be extended by fittings 455 and 456 from relay 225 and armatures 463 - 470 inclusive from relay 226 to the windings

  <Desc / Clms Page number 76>

 ment of relays 227 to 232 inclusive.



   Suppose the number "5" is to be transmitted.



  Then a ground is given by the conductor 5 as described previously to cause the excitation of the relay 232. The relay 232 then closes the following circuit: negative, resistor 435 (fig. 13), armature 521 of relay 232, armature 436 from relay 216, armatures 439, 444 to the contact associated with armature 366. Thus when armature 366 is open when relay 211 responds to the first pulse, no pulse is transmitted by the positive conductor due to the circuit of shunt shown above. Relay 216 responds to the first pulse, however, and at the end of it opens the shunt circuit through contact 436. The next pulse is therefore transmitted by the positive conductor and at the end of this pulse the relay 217 fully draws in and again closes the shunt circuit across the contacts of armature 366.

   This shunt circuit is established as indicated above except that it passes through the armature 522 of the relay 232 and the armature 439 in its working position instead of going through the armature 521 of the relay 232 and the reinforcements 436 and 439.



  The fourth impulse is transmitted by the positive conductor and at the end of this impulse the relay 219 fully draws and is blocked by its own armature 448 and by the armature 445 of the relay 218. The relay 219 by the armature 447 opens the relay circuit 218 which releases and by armature 445 it opens the circuit of relay 219 which also releases. When releasing relay 219, the four relays 216, 217, 218 and 219 are at this moment de-energized and the transmission of the next digit can take place. It is therefore understood

  <Desc / Clms Page number 77>

 that the transmission of digits other than digit 5 will take place in a manner similar to that described above as soon as the circuits in their details differ so that the pulses indicated in fig. 18 be deleted as appropriate.

   For example for the number "0" the relay 232 will be energized through its Lower winding in series with the relay 227.



  The shunt circuit for the third pulse therefore passes through armatures 554 and 553 to armature 439 so that the first, second and third pulse are removed.



   The RS6 connector passes at the end of each digit trans- mission on a branch of the drive circuit of relay 219 through armature 458 of relay 225, the lower winding of relay 208, the winding of relay electromagnet 326 towards the battery.



   As to the method of transmitting the pulses in code form, it is understood that it can vary in several different ways. For example the pulses can be transmitted by the positive conductor or the negative conductor and this method allows a more satisfactory control to take place at the moment when the pulses are received as will be explained in more detail during the operation of the control circuit of the control. long distance line.



   Other communications.



   A brief description will now be given of the dispatch connections used for the establishment of other communications by the Hautrage office.



   Communications to Mons satellite offices with a capacity of less than a thousand lines.



   A communication to an office in the urban region of Mons is considered as a communication

  <Desc / Clms Page number 78>

 at a single rate and only five digits will be sent by the calling subscriber, the first two digits indicating the requested office. It is understood that for each office in the urban area the first two digits will be different, but the distribution connections from the benches of the SW6 connector are combined so that all communications to offices in the urban area of Mons and having a A capacity of less than a thousand lines can be established under the control of brush 297 and contacts 16 to 23.



  It follows that the contacts on which the brush 261 of the TD1 connector can be established for a communication to a desk of this type are multiplied together and connected to the brush 297 of the connector SW6. Since the distribution connections for establishing communications of this type originate from contacts 16 -23 associated with brush 297, the corresponding contacts of the bank associated with brush 264 are multiplied together and connected to the electromagnet 326 of the RS6 connector.



  Thus when the first two digits emitted indicate that the communication is for an office in the urban region of Puons with a capacity of less than a thousand lines, the brushes of the connector SW6 will automatically switch to the 16th contact. Referring now to fig. 20, since the communication must be counted by the counter of the calling subscriber, the contact 16 will be connected to conductor 2 of the control conductors. In addition, all communications to these offices are routed through the LS connector of the Mons office and it follows that the first two digits determining the direction are always the same, namely 9 and 7. Consequently contacts 17 and 18 associates

  <Desc / Clms Page number 79>

 to the brush 297 are connected to the conductors 9 and 7 respectively forming part of the control conductors.



  The next number determining the direction will have the effect of raising the brushes of the LS connector to the appropriate level, naturally depending on the receiving office. Contact 19 is therefore connected to conductor 306 which in turn is connected to brush 265 of connector TD1. The bench contact associated with the latter brush is connected to one of the control conductors of cable 286 to cause the transmission of the appropriate direction digit to the Mons office.



  It is understood that the contacts on which the brush 265 may be located for communications of this type are connected to different control conductors of the cable 286 in order to ensure the transmission of the appropriate direction digit according to the position taken by the brush 265. The communication is then routed to the incoming selector of the desired office and the other digits are used to set the group selector and the final selector for that office.



  For this purpose, the contacts 20, 21 and 22 associated with the brush 297 of the RS6 connector are respectively connected to the conductors 311, 312 and 313 which in turn are connected to the different brushes by which the third, the fourth and the fifth digit are held in reserve.



  These digits represent the number of the called subscriber in the office. Contact 23 is then connected to conductor 317 to cause the release of the recording translator.



   Communications to Mons satellite offices with a capacity of more than a thousand lines.



   It is understood that if the capacity of the requested office is more than a thousand lines, an additional figure

  <Desc / Clms Page number 80>

 must be transmitted by the recording translator and will have the effect of acting on another group selector of the requested office. Another brush of the HS6 connector will therefore be employed and it is expected that when the first two digits transmitted by the calling subscriber indicate that the communication is for an office in the urban area having a capacity of more than one thousand lines, that the appropriate contacts of the bank associated with the brush 261 are connected to the brush 299 of the RS6 connector.

   In addition the contacts 16 - 24 associated with this brush are used so that a connection is also established through the brush 264 to the electromagnet 326 of the RS6 connector so that this connector advances automatically to its point. 16th contact. The distribution connections used for establishing such a communication are similar to those described for communication to an office of less than a thousand lines and the extra digit is obtained by connecting contacts 20,21, 22 and 23 to conductors 310, 311, 312 and 313 so that the last four digits sent by the calling subscriber are retransmitted without being translated to put in position the connectors of the requested office.



  It is understood that for an office having a greater capacity of one thousand lines, that of the first two digits the second is variable since it also intervenes for the selection of the desired subscriber. In this case therefore more than one bank contact associated with the brush 265 of the connector will be connected to the same conductor of the group of control conductors so that the same direction determination digit is transmitted although the second digit is different .

  <Desc / Clms Page number 81>

 



   Communications by direct junctions to neighboring offices.



   A direct junction line connects Hautrage to St. Ghislain and it is therefore not necessary for communication between these offices to be routed through the Mons office. For a communication to St. Ghislain the brush 298 of the RS6 connector is connected through the brush 261 of the TD1 connector and the RS6 connector therefore passes on its 16th contact. This communication is also at a single rate so that with reference to FIG. 21 the contact 16 associated with the brush 298 is connected to the conductor 2 of the control conductors. Only one direction digit is necessary for a communication to St. Ghislain since the junctions to this office are accessible by the sixth level of the first group selectors of the Hautrage office. Consequently, contact 16 is connected to conductor 6 of the control conductors.

   The capacity of the office of St. Ghislain is over a thousand lines and it follows that four digits will have to be transmitted to put in place the connectors of this office and consequently the contacts 18, 19, 20 and 21 are connected to the conductors 310, 311, 312 and 313 so that the second, third, fourth and fifth digits sent by the calling subscriber are retransmitted to St. Ghislain without being translated. This has the effect of completing the establishment of the communication and the contact 22 is connected to the conductor 317 to cause the release of the recording translator.



   Communications to a suburban office.



   As explained previously there is currently a direct junction between St. Ghislain and Dour and communications from Hautrage to Dour are completed.

  <Desc / Clms Page number 82>

 mined through St. Ghislain. Dour is found. currently in the suburban region of the Mons area and it follows that a communication from Hautrage to Dour is a communication. multiple rate. Currently, therefore, the call is counted by an operator who takes care of the incoming calls to Dour.

   The distribution connections to establish a communication to Dour start from contacts 1 - 4 associated with the brush 301 of the RS6 connector and with reference to fig. 24 it will be seen that contact 1 is connected to conductor 1 of the group of control conductors while contact 2 is connected to conductor 309 to cause the transmission of the first digit emitted in order to direct the call to St. Ghislain. This is satisfactory as long as the trunk lines to St. Ghislain are connected at a level corresponding to the first digit of the Dour telephone numbers. Contact 3 is connected to conductor 310 in order to ensure the transmission of the second digit sent by the calling subscriber. This figure is repeated through the office of St. Ghislain towards Dour to route the communication to an operator position in Dour.

   The rest of the establishment of the communication is therefore carried out manually and consequently the conductor 4 is connected to the conductor 317 to cause the release of the recording translator.



   When Dour becomes automatic, the junction between Dour and St. Ghislain will probably be abolished and a direct junction will be provided between Dour and Mons so that communications from Eautrage to Dour will be established in a fully automatic manner. channeled through lions. In addition, since communication is at a multiple rate, the organs

  <Desc / Clms Page number 83>

 ticket printers will be put into operation in Mons in order to record the total cost of communication.

   The schematic representation of the junction circuit given in fig. 2 does not include the connectors necessary to route the communication to Dour when it is automatic, but it is obvious that there is no difficulty in combining things for this purpose. The LS connector has no reserve contact but a group selector can be inserted between the IS and LS connectors, the group selector giving access to connectors such as LS, some of which will be connected to junction lines leading to other offices in the urban area while one or more of them will provide access to trunk lines leading to offices in the suburban area. This separation is desirable because the receipt printing equipment must be associated with trunk lines leading to suburban offices.

   As a variant the connector. IS can have direct access to function lines leading to Dour.



   With regard to the operation of the recorder translator it is understood that, although a call to Dour is a multiple tariff call, it differs from a multiple tariff call to offices in other areas in that the number d The call has five digits instead of eight digits. Since, however, once the transmitted digits have been recorded in the logging translator, the rest of the operations are controlled by the RS6 direction determination connector, the circuits of the logging translator.

  <Desc / Clms Page number 84>

 The brush should not be modified but the modifications will occur in the distribution connections starting from the contacts associated with the brush 301 of the RS6 connector.



   The determination of the tariff will be limited to the choice between two tariffs, while as regards the control circuits and the ticket printing equipment, it will be noted that in general they will be the same as those used for a communication to an office. another area. The required information will be transmitted to the 1 ion in code office since this method saves time and a converter will be used to convert the numbers in code form into numbers using the decimal system. No non-decimal pulse train will be required, however, since repeaters will not be used and "poor" quality trunk lines can be used.

   The digits determining the direction may be transmitted in the form of AC pulses or if DC pulses are used, means will also be used to regenerate them. At the end of the conversation the various indications will be transferred to the control device of the printing machines as well as for other communications except that the indication by a star may not be used.



   An example of distribution connections which will be used to establish a call to Dour when the latter is automatic is shown in fig. 25. It is understood, however, that this particular example is a kind of project and that it can be modified when the path that the communication will follow in the Mons office is decided. The broom 302 in FIG. 25 shows a variation of the brush 301 of the RS6 connector and can be substituted there when the change occurs.

  <Desc / Clms Page number 85>

 



   Let us now refer to fig. 25, it should be noted that the contact 1 associated with the brush 302 is connected to the conductor 3 of the control conductors to cause the transmission of the number 3 in order to indicate that this communication must be counted by the printing equipment. tickets. Contact 2 is connected to conductor 9 of the control conductors from where it follows that the first group selector 1GS (fig. 2) rises to the ninth level to choose a junction line of "poor" quality towards Mons. Contact 3 connected to conductor 306 which in turn is connected to broom 265. The contact on which broom 265 is located / connected to the appropriate control conductor to cause transmission of the appropriate direction-determining number to the office. Mons.

   It is the only figure determining the direction that is transmitted to Mons and it follows that for this particular example the junction lines to Dour are directly accessible by the IS connector. Contact 4 is connected to conductor 316 to allow the other remaining digits to be transmitted in code. The remaining contacts are connected in a manner similar to that for long distance communication to another area, as shown in fig. 23, the tariff figure being transmitted between the number of the calling subscriber and the number of the called subscriber.



   Communications to neighboring offices in other areas.



   Now Blaton's office is manual and has a direct junction to Hautrage. It is therefore only necessary to transmit a single direction digit in order to set the first group selector 1GS to level 3 through which it

  <Desc / Clms Page number 86>

 gives direct access to the connecting lines leading to it.



   Referring now to freeze 24, a communication to Blaton is controlled by the distribution connections starting from contacts 16, 17 and 18 associated with brush 301 and it will be seen that since this communication is considered as a single tariff communication, contact 16 will be connected. to the conductor 2 of the control drivers while the contact 17 will be connected to the conductor 310 which in turn is connected to the brush 260 of the TD1 connector. This distribution connection is preferably made instead of that to the conductor 3 of the control conductors in view of the fact that there could be other manual offices having direct junctions towards Hautrage and which would be differentiated by the second. digit sent by the calling subscriber.

   Finally, contact 18 is connected to conductor 317 in order to cause the release of the recording translator.



   It is understood that when Blaton is converted to automatic, the direct junction between this office and Hautrage will probably be removed. A communication between these two offices will then be established in a manner similar to that described for a communication to another zone, that is to say that the calling subscriber of Hautrage will have to send a number composed of eight digits. fres by starting with the number 0. As regards the counting of the communication this will be carried out by the normal operation of the counter of the calling subscriber or can be carried out by printing a ticket. In the first case, the contact on which the brush 268 of the TD3 connector is located is connected to the winding of the relay 186.

   Therefore when

  <Desc / Clms Page number 87>

 from the release of relay 242 at the end of the rotational movement of the TD3 connector, an earth is given by the armature 406 (fig. 7), the armature 580 of the relay 242 (fig. 9), the brush 268 and the contact from bank to relay 186. The relay 186 attracts to cause the same modifications in the field of the distribution connections of the RS6 connector as those described previously.



  If, however, the communication is to be ticketed, this connection will not be executed and the Recorder Translator will attract as described above for communication to another zone.



   Arrangements for supervision and alarm.



   The supervision and alarm devices are controlled by the RG8 relay group and a description will now be given of the operation of this relay group under different conditions. It is understood that if the calling subscriber does not transmit digits or does not completely transmit the requested number or a permanent short circuit exists on the line, which will result in the recording translator maintaining occupied during the time beyond that necessary for the normal establishment of a communication, that provisions are made so that under these conditions the recording translator is free.



   Call fault by the calling subscriber or permanent earth on the subscriber's line.



   It should be noted that during the normal establishment of a communication relay 346 is actuated until the calling subscriber has sent the first two digits of a five-digit call or the first five digits of a call. eight digits. The relay 346 circuit is established as follows: battery, lower coil of relay 346, armature 482 of relay 191

  <Desc / Clms Page number 88>

 to earth to the rotation head contacts 387 of the TD1 connector with another circuit through the rotation head contacts 391 of the TD2 connector in their rest position, the armature 515 to the earth to the frame 406 if the relay 236 is drawn indicating that the call is of the eight digit type.



   The attraction of the relay 190 when the recording translator is put into service, prepares by the armature 341 a circuit towards the conductor 530 (FIG. 11). Periodically positive pulses are applied to lead 530 so that a circuit is established as follows. for relay 347: earth to conductor 530, armature 354 of relay 348, armature 341, 532, lower winding of relay 347 to the battery. Relay 347 attracts and blocks by its armature 531 marked "X" to a ground at armature 352.

   By armature 532, relay 347 opens its initial excitation circuit and by armature 533 it prepares a circuit for relay 347 which is extended by conductor 534 to which the positive pulses are applied at intervals which nt time / exceeds / the longest time normally required before relay 346 releases and after the corresponding pulses have been applied to conductor 530. Relay 348 attracts in response to an impulse given by conductor 534 and locks through its armature 353 marked "X", armatures 476 if relay 346 is not attracted or 535 if relay 345 is not attracted, armature 484 to earth at key 358 in its working position.

   By armature 351, relay 348 provides another blocking circuit for relay 189; by the armature 352 and its rest contact it opens the blocking circuit of relay 347 which

  <Desc / Clms Page number 89>

 released; and by its attracted working contact it closes a blocking circuit for the relay 346 through the armature 475 if the relay has not released previously; by armature 355 and its rest contact it removes the earth of conductor 141 leading to the circuit of the line of the calling subscriber but this conductor is still earthed by armature 537 and armature 478 of relay 346 ;

   by its make contact at armature 355 it closes a circuit for relay 349 and for relay 192 through armature 479. This circuit cannot be established if relay 346 has released. The relay 349 attracts and by the armature 539 opens the circuit of the starting conductor 545 at one point; by armature 540 it opens at one point the starting conductor 550 towards the pulse generator; by armature 541 it grounds the alarm conductor 551; by frame 542 it closes a circuit for lighting the lamp 547 and by frame 543 it opens the circuit of the busy lamp 548.



   The relay 192 by attracting connects through the armature 472 an earth to the brush 303 of the RS6 connector and through the armature 473 it connects the impulse conductor 552 to the winding of the relay 213 to start the transmission of the digits by the translator-recorder.



   Referring now to fig. 26 which represents the distribution connections connecting the contacts associated with the brush 303 of the RS6 connector, it will be noted that the contact 1 is connected to the conductor 3 of the control conductors. In this case, it is irrelevant to connect to conductors 1, 2 or 3 since there is no question of counting but a series of pulses must be sent before the group selector is in position.

  <Desc / Clms Page number 90>

 as will be explained below. Contact 2 is connected to conductor 9 in order to determine the position of the first group selector so that it chooses a junction line to Mons.

   Contacts 2 to 6 are also connected to the appropriate conductors of the group of control conductors to route the communication to a special ticket printing device reserved for this purpose. This special device for printing tickets is not shown in fig. 2 and it follows that the distribution connection starting from contacts 2 - 6 and ending in the appropriate control conductors has not been introduced. After the transmission of the digits determining the direction, the number of the calling subscriber will be transmitted in code to the receipt printing apparatus in a manner similar to that previously described so that the printed ticket will bear the subscriber's number. caller and will serve as a permanent fault record.

   After the transmission of the caller's number, the brush 303 switches to a contact and is connected to the conductor 317. The usual circuit leading to the translator-recorder finder to make the finder available for another communication has, however, been opened to the rest contact of armature 474 (fig. 11) and consequently the earth applied to brush 303 is prolonged by the work contact of armature 474 towards the upper winding of relay 345. This relay attracts and pulls blocks by an earth at frame 477 and through frame 536.

   By the armature 537 the earth is removed from the conductor 141 to cause the release of the line relay in the known manner so that the cut-off relay due to its delay on release

  <Desc / Clms Page number 91>

 is blocked by the subscriber's loop independent of the organs of the office so that the first group selector, the recorder translator finder and the recorder translator become free to be used for other communications and the subscriber's line only becomes effective when these blocking conditions are removed.



   In addition, through the armature 555, the relay 345 opens the blocking circuit of the relay 348 which releases and through the armature 351 it opens another blocking circuit of the relay 189 which releases to cause the release of the recording translator as described previously.



   Devices not shown can also be provided by means of which, if the transmission of the digits is not completed and a period of 30 seconds elapses after the reception of the last transmitted pulse, the recorder translator is automatically connected to Mons at through a special circuit giving access to the special printing device. The number of the calling subscriber is therefore printed in the same manner as that described above.



  This method of operation is useful in that it allows the registration of subscribers who do not operate correctly to dial their number. It is also useful in that it intervenes effectively when a short circuit occurs on the line intermittently as long as the time between two successive short circuits exceeds 30 seconds.



   Wrong translator and recorder.



   In the event that the calling subscriber has sent enough digits to release relay 346, but the recording translator remains in service after a period of time determined at

  <Desc / Clms Page number 92>

 Due, for example, to the incomplete transmission of digits, arrangements are made to disconnect the line of the calling subscriber from the recorder translator while the latter's circuits remain in the position where they were brought from such an outlet. te that the recording translator be kept busy and that the attention of the service attendant be drawn.



   Relays 347 and 348 attract positive pulses through conductors 530 and 534 as previously described and relay 348 by attracting removes a ground through armature 355 from conductor 141 in order to allow line relay to release and if the The subscriber's line is still looped, the cut-off relay is blocked as before and the calling subscriber can in any event make a new call independently of the disturbed recorder translator.



  Since the relay 346 is not attracted, the circuit through the conductor 142 will be held by the armature 474 and it follows that the translator-to-recorder RTF finder will remain in the position it occupied.



   In addition, the relay 348 by the armature 351 closes another blocking circuit for the relay 189, the initial circuit of this relay being open when the relays 187 and 188 release when the line of the calling subscriber of the translator is disconnected. recorder.



  The circuits of the recorder translator are therefore maintained in the positions they occupy.



   Finally, the relay 348 closes by the armature 355 and its working contact an obvious circuit for the relay 349. The relay 349 by attracting by the armature 542 closes a circuit to light the lamp 547 in order to give a visible alarm and by 1 'frame

  <Desc / Clms Page number 93>

 541 it gives a ground to the conductor 551 to cause an audible alarm.



   The circuits remain in these conditions until the fault has been detected and key 538 is opened. The opening of the key 538 causes the opening of the blocking circuit of the relay 348 which releases and which, through the armature 355 and its contact on, opens the circuit of the relay 349. In addition, through the armature 351 the blocking circuit of relay 189 is open and this relay releases in order to cause the release of the recording translator as described previously.



   Transmission delay during full reception of pulse trains.



   Suppose the calling subscriber delays the transmission of one of the digits, in which case it is absolutely necessary to delay the transmission of the pulses by the recording translator. For example, for a five-digit call to a local subscriber, the transmission of the pulses by the recording translator begins after the recording of the second digit by the connection of the pulse conductor 399 to the armature 400.



  If at this time the calling subscriber has not completed the transmission of digits, i.e. the third digit is not transmitted before the first digit is transmitted, then the next blocking circuit is set for relay 208 which is drawn at the end of each digit transmission: earth at the ascension head contact 390 of the TD2 connector in their rest position, conductor 311, connected to contact 2 associated with the brush 296 of the connector SW6 (fig. 19), brush 296, contact on which the brush 261 of the TD1 connector is located, brush 261, fittings 328, 401, 410,471, 412 in its position.

  <Desc / Clms Page number 94>

 working, upper winding of relay 208 towards the battery. The relay 208 by attracting disconnects the pulse conductor 399 from the coil of the relay 213 and as a result delays the transmission of the pulses.

   Relay 208 is released when its blocking circuit is open during operation of ascender head contacts 390 as soon as the first step of ascension is made through connector TD2.



   Similarly for a communication to 1,, Ions for example a similar blocking circuit is closed for the relay 208 with the brush 296 (fig. 19) on the contact 19.



   In addition, other similar blocking circuits if the subscriber is closed / calling delays the transmission of the fourth or fifth digit, the earth being given in these cases by the rotation head contacts 390 of the TD2 connector or by the contacts 11 to 25 associated with the brush 272 of the connector RS1 respectively with the appropriate contacts by the brush 296.



   It is understood that although the description has been given with regard to local communications and communications to Mons only, that it is understood that it is variable as regards the transmission of pulses by the recording translator for all five-digit calls.



   With regard to three-digit calls, the transmission of the pulses does not start until all digits have been transmitted so that the above considerations do not therefore apply.



   Regarding eight-digit calls, remember that the transmission of impulses does not start before the TD3 connector is switched on.

  <Desc / Clms Page number 95>

 position, that is, before five digits have been transmitted. It will therefore be seen by referring to FIG. 23 that the transmission of pulses can take place after sending all the digits determining the direction and sending the number of the called subscriber up to the fifth digit.

   If then the calling subscriber delays the transmission of his sixth digit, the relay 208 will be maintained by the following circuit: earth at contact 11 or 25 associated with brush 273 of connector RS1, conductor 313 connected to contact 13 associated with brush. 200 (fig. 23à of connector RS6, brush 300, armatures 405, rotation head contacts 397 of connector TD3, armatures 471, 412, upper winding of relay 208 towards the battery. If the delay occurs in transmission from the seventh or eighth digit, the earth will be derived from contacts 11 or 25 associated with brush 274 of the RS2 connector or from contact 6 associated with brush 257 of the RS5 connector on the appropriate contacts by brush 300.



   Detailed description of the first group selector.



   We will now refer to Figs. 28, 29 and 30 which represent the circuits of the first group selector 1GS and in fig. 31 which represents a junction circuit accessible to the brushes of the first group selector.



   When the 1LF line finder connects to the calling line, the negative as explained above is extended by the recording translator through the positive conductor 109, to the conductor 600 (fig. 28), the armature 661 and its contact of rest, the stepped contacts of armatures 657 and 659, the upper winding of relay 609 to earth. ' Likewise

  <Desc / Clms Page number 96>

 a ground is given through the negative conductor 108 to the conductor 601, the armature 662 and its rest contact, the stepped contacts of the armatures 658 and 660, the lower winding of the relay 609 to the battery. Relay 609 therefore attracts and through armature 649 closes a circuit for relay 610.



  In addition, by armature 647 and 648, relay 609 prepares a pulse circuit for the outgoing conductors. Relay 610 by attracting gives a ground through armature 652 and through the top winding of relay 607 to test lead 602 and lead 110.



  The connector is then in the desired conditions to receive pulses from the recording translator.



   The first digit transmitted by the translator-recorder has the effect of giving an indication regarding the counting mode to be used for communication and does not cause any positioning of the connector brushes. This number can be the number 1, 2 or 3 and during the first impulse, the relay 609 releases and closes a circuit by: earth, armature 649 and its normally closed contact, armature 655 and its working contact, rotation head 642, stepped contacts of armature 655, armatures 669, 673, lower coil of relay 613 to battery. Relay 613 is a two-stroke relay and at this time it only closes its armature 672 marked "X".

   At the end of the pulse, relay 613 draws fully through: earth, armatures 654 (fig. 28), 667, 672 towards the battery through the two windings of relay 613 in series. Relay 613 through armature 675 extends a pulse repeating circuit to the lower coil of relay 612.



  It should also be noted that relay 611 is energized

  <Desc / Clms Page number 97>

 through the two windings lying in parallel on the pulse repeating circuit - and being of the slow release type is kept attracted throughout the duration of the pulse train.



   Suppose the first digit has three pulses. Then the second pulse will cause relay 612 to be energized by the armature at work
673. The relay 612 is also a two-stroke relay and attracts in the same way as the relay. 613.



   It is blocked by its contacts 668 marked "X" and by a ground through the armatures 679 and 654 and by fully drawing it through the armature 667 the blocking circuit of the relay 613 which thereby releases. Finally, the third pulse causes the relay 615 to be energized through the armature 669 at work. Relay 615 is a two-stroke relay and at the end of the pulse it is blocked by its armature 680 marked "X", the armatures 686,
656 towards the earth and it draws thoroughly. By the frame
679 relay 615 opens the relay blocking circuit
612 and release.

   Relay 611 also releases at the end of the series of pulses and by armature 676 the following circuit is closed for relay 620: earth, armature 653, 676 (fig. 28), armature 678, 684 or armature. - tures 671 or 666 'depending on the number of pulses, voltage-free head contacts 644, resistance 688, median winding of relay 620 towards the battery. The relay 620 attracts and through the armature 665 prepares a pulse circuit for the ascending electromagnet 622.

   The second series of pulses transmitted by the logging translator is repeated by armature 649 of relay 609 through, '' the following circuit: earth, armature 649 (fig. 28) and its rest contact, armature 655, ro- head

  <Desc / Clms Page number 98>

 station 642, attracted contact and armature 665, resistor 689, rotation head contact 641 in parallel with the lower low resistance winding of relay 620, winding of electromagnet 622 to the battery.



  On the connector's first ascending step the initial drive circuit of relay 620 is opened by ascender head contacts 644 but the relay is kept pulsed through the lower winding. At the end of the pulse train, the relay 620 releases and by the armature 664 the following circuit is closed for the rotation electromagnet 621: earth, armatures 653,676 (fig. 28), armatures 678, 684, ascension head contacts 644 in their working position, armatures 664, winding of the rotation electromagnet 621 towards the battery. The rotating electromagnet attracts and advances the brushes to the first row or level chosen.

   In addition by attracting the rotating electromagnet closes contacts 690 from where it follows that the following circuit is established: earth, armature 654 (fig. 28), winding of relay 619, armature 685, springs 640 of the No, self-interrupting contacts of solenoid 621, upper winding of relay 620 towards the battery. If the line on which the brushes are engaged is occupied, an earth is given back through the brush 626 so that the relay 619 is short-circuited and the relay 620 attracts and through the armature 664 it opens. the circuit of the rotating electromagnet.

   The rotating electromagnet thereby releases and opens contacts 690 whereby the relay 620 releases and again closes the circuit for the rotating electromagnet.



  This interaction continues until a free line is found with no negative applied.

  <Desc / Clms Page number 99>

 



  The relay 619 then draws in series with the upper winding of the relay 620 and is blocked by the armature 687 in series with the middle and upper windings of the relay 620 and by the armature 684 opens the excitation circuit of the electro -Rotating magnet to prevent its further operation. In addition, through the armature 686, the relay 619 opens, through its rest contacts, the blocking circuit of the relay 615 if this relay has been attracted. Relay 615 having enabled the preparation of the pulse circuit to the ascent electromagnet releases. By its working contact, armature 686 of relay 619 closes the following circuit for relay 608: earth to armature 656 (fig. 28), armatures 686,696, winding of relay 608 to the battery.



  In addition, the relay 619 by the armatures 681 and 682 closes the circuit of the outgoing conductors at various points.



  The relay 608 by attracting by the circuit above disconnects by the armatures 657, 658, 659 and 660 the conductors 600 and 601 coming from the recording translator of the relay 609 which releases and it connects them to the outgoing conductors by the intermediary of a circuit which is bypassed on the capacitors 691 and 692 thus ensuring a DC pulse circuit from the recorder translator to the following devices.

   The transmission of the impulses by the recorder translator continues and as soon as it ends, an earth is disconnected from the connector 602 from where it follows that the relay 607 which was short-circuited by this earth and the earth given by armature 652, attracts by the following circuit: earth, armature 652, upper windings of relay 607, armatures 695,651, winding of relay 610 to the battery through resistor 699.

   Relay 607

  <Desc / Clms Page number 100>

 attracts and blocks by its armature 697 marked "X" and a ground to the armaturee 656; by armature 696, relay 607 opens the circuit of relay 608 which releases; by the armatures 693 and 694 it closes the loop comprising the resistors 700 and 701 to block certain following connectors and by the armature 695 short-circuits its upper winding to be made slow to release.



  Releasing relay 608 reconnects the incoming conductors to relay 609 which attracts and by armatures 647 and 648 bypass armatures 693 and 694 at the same time as resistors 700 and 701. This guard circuit is established as follows: positive conductor, brush 624, armatures 681,648, staggered contacts associated with armature 703, right winding of branched magnetic field relay 614, upper winding of relay 615, stepped contacts associated with armature 702, armatures 647, 682 to negative brush 625. The left winding of relay 614 was energized during operation of relay 610 but this relay does not draw more at this point than relay 615.



   The effect of operating relays 612, 613 and 615 in response to the first digit received from the first group selector will now be discussed and it will first be assumed that the call is counted by the subscriber counter in the usual manner, ie. that is, the first digit is "2" and the relay 622 is pulled.



  When the called subscriber answers the negative and earth connections are reversed to cause the operation of relay 614. Relay 614 by armature 706 closes the following circuit for relay 606: soil rotation head contacts 643 at work (fig. 30), armatures 705, 706, 670, winding of relay 606 towards

  <Desc / Clms Page number 101>

 battery. The relay 606 attracts and through the armature 708 disconnects the earth of the armature 652 which is applied to the conductor 602 and connects the booster battery to it through the conductor 710. The subscriber's meter caller is therefore activated. In addition, the relay 606 by the armature 709 short-circuits the relay 612 which releases and by the armature 670 it opens the circuit of the relay 606 which also releases.

   Subsequent operation of the calling party counter is therefore prevented.



   When the caller hangs up his receiver at the end of the conversation, relay 609 releases followed shortly after by relay 610. Relay 610 by armature 654 opens the circuit of relays 619 and 620 which release and by armature 653 and its normally closed contact the following circuit is closed for the release electromagnet 623: earth, armatures 653, 683, ascension head contact 645, winding of the release electromagnet 623 to the battery. The connector brushes therefore return to their normal position. In addition, by armature 656, the blocking circuits of the various relays are opened and the connector consequently returns to its normal position.



     When the first digit transmitted by the logger translator is the digit "1" indicating that the communication is intended for an operator who, as previously indicated, controls the count of the communication, the relay 613 is drawn. When the attendant responds, the negative and positive reversal occurs as previously indicated and relay 614 attracts. However by armature 706 and due to the attraction of relay 613, relay 616 is attracted instead of relay

  <Desc / Clms Page number 102>

   606, the circuit being the following: at the rotation head contacts 643 in their working position, armatures 705, 706, 674, winding of relay 616 towards the battery.

   The relay 616 by the armatures 702 and 703 disconnects the outgoing conductors of the windings of the relays 614 and 615 and connects them to the earth through the winding of the relay 617 and to the negative through the winding of the relay 618, these two relay thus attracting. By armature 705, relay 616 opens its own excitation circuit but being slowly released it is kept attracted until another circuit is closed by armature 711 or 714; ' through the armature 704 the relay 616 provides another earth for the relay 610 so that the release of the connector and therefore the connection established by the calling subscriber is completely under the control of the operator.



   Thus when the caller hangs up his receiver, relay 609 releases but the only effect of this release is to remove by reinforcements 647 and 648 the short-circuit of reinforcements 693 and 694 and of strong resistors 700 and 701. The current circulating in the loop circuit is therefore sufficiently reduced as to cause the release of the line relay at the operator position to indicate that the caller has hung up but it is insufficient to cause the release of relays 617 and 618. These relays are only released when the attendant cuts off the communication, for example by removing the plug from the jack or returning the key to its rest position.

   The operator is therefore in a situation to be able to call back the calling subscriber if necessary and in order to carry out this maneuver the positive conductor is open.

  <Desc / Clms Page number 103>

 to the operator position. Relay 618 then releases and the following circuit is closed: earth at the rotation head contacts 643 actuated, armatures 705, 712, 715, 650, winding of relay 604 to the battery. Relay 604 attracts and through armatures 661 and 662 connects conductors 717 and 718 to conductors 600 and 601 through which inrush current is transmitted to the calling subscriber.



   It is also possible, as will be seen from the description of the recording translator, that certain communications (for example for the speaking clock and for certain other services) can be counted by the caller's counter. This counting can be done either before or after the caller hangs up by opening the negative conductor, which has the effect of releasing relay 617 and closing the following circuit: earth at the rotation head contacts 643 activated, armatures 705, 712, 716, winding of relay 606. Relay 606 attracts and causes the calling subscriber's counter to operate as described previously.



   If no negative and earth inversion occurs on the outgoing conversation conductors after a predetermined period of time, that is, the calling subscriber does not answer, the call will automatically be released. . When pulling relay 607, when transmission by the logging translator is completed, conductor 725 is connected.



  This conductor is periodically earthed and is used to energize relay 605 by: conductor715, armatures 707, 713, 698, staggered contacts associated with armature 721,, ¯ upper winding of relay 605 towards the battery.



  The relay 605 attracts and blocks by its lower winding, the armatures 722, 706, 705 towards an earth with

  <Desc / Clms Page number 104>

 rotation head contacts 643, through armature 721 it opens its initial excitation circuit and through armature 720 it connects conductor 723 to the junction point of resistor 699 and the coil of relay 610. The conductor 723 is also periodically grounded, the period of time between a ground pulse by conductor 725 and a pulse by conductor 723 being considerably greater than that required for communication to be established and 'called subscriber answers.

   Therefore when a positive pulse is transmitted through the conductor 723, the relay 610 is shorted and released to cause the release of the group selector and the communication.



   For a communication to an office in a different area, if no trunk line to the desired area is available, the communication is automatically routed to an operator in the Tuons office who then establishes the communication and controls its release. .



  In this case the relay 613 of the group selector must be engaged and for this purpose an alternating current pulse is transmitted by the positive conductor to the group selector when the attendant answers. It is understood that this AC signal will be received before the register translator has completed the transmission of the pulses, so that the relay 608 is still attracted. The relay 603 responds to the action of the alternating current because it is connected in parallel with the rectifier 729 and through the armature 728 it closes an obvious circuit for the relay 613. The operations which follow are then similar to those described above.



   If the group selector does not find a row

  <Desc / Clms Page number 105>

 free on the chosen level, the brushes continue to turn until the eleventh step and it follows that the springs of the eleventh step are actuated. By the springs 640 and their rest contact the test circuit passing through the relay 619 is open and by the working contact a ground is applied to the brush 626 to actuate the counter indicating the overload; by the contact 659 a circuit is closed for the relays 619 and 620 in series so that these relays attract to prevent the subsequent excitation of the electromagnet 621 and finally by the contact 638 a busy tone is transmitted to the conductor 786 and through capacitor 727 to the negative conductor and from there to the calling subscriber.

   The latter then hangs up his receiver and the relays 609 and 610 release, the release of the connector taking place as previously described.



   Referring to the circuit of the junction line shown in fig. 31 it will be seen that when the earth is given through the brush 626 of the first group selector during the attraction of the armature 685 (fig. 30), the relay 627 is actuated and by the armatures 730 and 731, the brushes of the group selector are extended by the conductors 632 and 633, the reinforcements 730 and 731, towards the conductors 635 and 636 of the junction line.



  The relay 627 furthermore blocks independently of the armatures 758 and 735 through the contact 732 by a ground on the brush 626 of the group selector, this ground giving a test of occupancy to the other group selectors. Finally by armature 733 the earth which shunted it is removed from relay 631 which thereby attracts and by armature 743 closes a signaling circuit to indicate that the junction line is occupied.

  <Desc / Clms Page number 106>

 



   The trunk line circuit is combined so that it can be used in both directions. So when the junction line is entered at the Mons office, conductors 636 and 635 are looped and relays 628 and 629 attract. By armatures 734 and 736 these relays establish a circuit for relay 630. In addition, relay 629 by armature 735 gives a ground to conductor 634 to occupy the junction line to the banks of the first selectors and by the armature. 737 removes shunt ground from relay 631 to allow this relay to attract.

   The relay 630, attracting by the armatures 739 and 740, extends the conductors 635 and 636 from the junction line to the conductors 744 and 745 leading to the incoming group selector which is permanently associated with the junction line; by reinforcement 738 it gives another protective earth to conductor 634; by armature 741 it is blocked by an earth at the incoming group selector and by armature 742 it opens at another point the shunt of relay 631. The relays 628 and 629 release when their circuits are opened by armatures 739 and 740 but their functions are at this time taken over by relay 630.



   When the called subscriber hangs up his receiver at the end of the conversation, the train of connectors at Hautrage is released and is followed by the release of relay 630. If at this time the equipment is not yet released in Mons, the relays 628 and 629 will draw again to keep the trunk line busy. When the ion equipment is released the relays 628 and 629 release and the trunk line becomes available for further communications.

  <Desc / Clms Page number 107>

 



   Let us now refer to the circuits which are planned at the Mons office. It is understood, however, that a certain number of connectors provided at Mons are of standard construction and their arrangements as well as their description apart from the general indications given with regard to FIG. 2, are not necessary for an understanding of the invention.

   A detailed description will therefore only be given for the TLCC trunk line control circuit and for the recorder translator or converter 0 as well as for the CF researcher associated with it, the control device of the printing machines PC, the device de determination of the date and duration of the DTU conversation as well as the PT and PU printing machines are described in detail in our patent applications N Z. 86 B and Z.86 C relating thereto.



   Detailed description of the control circuit
Long distance line.



   The TLCC trunk line control circuit is seized by a trunk line finder such as TLFl (Fig. 2) and is combined to hold in reserve the called subscriber number, the calling subscriber number, the tariff to be applied to the communication and a number indicating certain special characteristics of the communication if necessary. These indications are transmitted to the control circuit of the interurban line by the recording translator as described above.

   In addition, the trunk line driver circuit operates the CF connector to perform automatic search for one. free C converter to which the digits representing the number of the called subscriber are repeated; it controls the establishment of communication; it determines the duration

  <Desc / Clms Page number 108>

 communication and keeps this information in reserve and finally at the end of the communication it turns on the CF connector again to automatically search for a PC control device of the printing machines to which it transmits all the information held in reserve after which the call is released.



   When a communication is routed to the trunk line control circuit a negative is given by conductor 751 (fig. 37), the lower primary winding of transformer 811, the step contacts associated with armature 813, l winding of relay 764 to earth. The relay 764 by pulling closes through the frame 815 an obvious circuit for the relay 777. The relay 777 by pulling extends through the armature 819 a ground coming from the stepped contacts at the armature 823 towards the conductor 752 to keep the commando circuit of the trunk line and closes by the armature 818 an obvious circuit for the relay 781. The relay 781 by drawing closes by the armature 826 a self-interrupting circuit for the electromagnet 810 of the finder CF of the converter (fig. 36).

   This circuit is established as follows: earth, armature 832 (fig. 39), armatures 835, 826,840, self-interrupting contacts 841, windings of the electromagnet 810 towards the battery. A busy converter is indicated by a suitable earth contact associated with the brush 971 which extends through the armature 844 in the rest position, the hull springs 842 in the rest position towards the upper coil of the relay 780, the other terminal of this winding being connected to the earth by the following circuit: earth to the armature 817 (fig. 39), armatures 834, 825 in its working position and the two /, 1 in-

  <Desc / Clms Page number 109>

 bearings of relay 780 in series.

   Relay 780 is therefore shorted and does not attract such that the CF seeker brushes start rotating until they meet a free converter.



  When this takes place the relay 780 attracts by an earth given by the armature 817 and as indicated above passing through the brush 971 to go to the negative at the converter. The relay 780 by attracting opens by the armature 840 the excitation circuit of the electromagnet 810; closes by armature 839 a blocking circuit for itself independent of relays 781 and 782 and closes by armature 838 an obvious circuit for relay 787.



  The relay 787 by drawing closes by the armature 848 a circuit for the relay 788 to an earth given by the armature 847 and closes by the armature 849 a circuit for the relay 789. The relay 788 by drawing closes by armature 879 a circuit from earth to armature 886 (fig. 40) for relay 786 which attracts. The attraction of the relays 786 and 788 causes the connection of the brushes 959 to 962 of the OP connector to the brushes 967 to 970 of the CF finder through the pairs of contacts 880, 873; 881, 874; 882,875 and 883, 876. In addition, relay 787 connects through reinforcements 863 and 864 the brushes 973 and 974 of the CF searcher to conductors 759 and 760 of the interurban line.

   The relay 789 by attracting extends through the armature 852 the earth given by the armature 849 through the winding of the relay 778 towards the battery (fig. 39) and connects through the armature 853 the relay 763 (fig. 37 ) to the negative conductor 750 through the stepped contacts of the armature 814. The relay 763 draws upon connection to the conductor 750 and extends through the armature 862 the earth coming from the armature 865 to

  <Desc / Clms Page number 110>

 through the windings of relay 779 to negative.



  Relay 779 attracts and locks through armature 869 to earth at armature 851 (Fig. 41). In addition, its connection to this connector serves as an indication to the recording translator to mark that the control circuit of the trunk line is ready to receive the pulses sent to it. The relay 779 by drawing closes by the armature 871 another circuit for the relay 778 independent of the relays 787 and 789.



   Note that the cam springs 842 of the CF finder scope remain in the position shown when the finder brushes are in position on any of the contacts 1 - 20 and are actuated only when the brushes are in one of positions 21 to 25. .



   The transmission of digits from the recording translator then begins and for this communication it will be noted from the description of the operation of the recording translator for a call from another zone than the digits which must be received by the line control circuit. long distance include the number of the called subscriber (7 digits), the special digit if there is one, the number of the calling subscriber (5 digits) and finally a digit which indicates the tariff to be applied for this communication. In addition all these numbers are transmitted in code.



   As regards the code by which the digits are transmitted, each digit is transmitted by a series of four pulses, each pulse being transmitted by the negative conductor while certain combinations of pulses are alone transmitted by the positive conductor. In short, the effect of the first digit for example in

  <Desc / Clms Page number 111>

 The control circuit of the trunk line is that the pulses given by the negative wire are used to advance the IP connector step by step from contact 1 to contact 4 while the pulses transmitted by the positive wire are used to activate the appropriate counting relays of group 1 comprising relays 892 to 895 which are connected through contacts 1 to 4 associated with brush 950 of the IP connector.



  A similar group of counting relays is provided for each digit and since a maximum of fourteen digits must be received and held in reserve this number of groups of relays must be provided. These groups of relays are accessible by brushes 950, 951 and 952 of the IP connector, brushes 950 and 951 being offset with respect to each other by 180. In addition, the pulses transmitted to the counting relays are also transmitted by means of the brushes of the connectors OP and CF to the converter, the connector OP moving forward one step for each digit received. The relay or the combinations of relays which attract to indicate the different digits can be deduced from fig. 18 if the digits 1, 2, 3 or 4 written in the respective upper horizontal row are replaced by relays 892, 893, 894 and 895.

   The same considerations apply to the relays of the other metering groups. It should also be noted that the counting relays used in the various circuits are of a particularly small type carrying only one blocking contact. They are indicated on the plans by an oblique line placed in the lower left corner of the relay.



   The code pulses are transmitted by sending four pulses for each digit through the

  <Desc / Clms Page number 112>

 negative wire and one or two pulses by the positive wire, the position of the pulses by the positive wire relative to those by the negative wire being used to distinguish different digits. Thus, assuming that the number 1 is to be transmitted, the first two impulses will only be transmitted by the positive wire. The first pulse will therefore interrupt both positive and negative leads 751 and 750 and both relays 764 and 763 will be de-energized.

   Relay 764 closes through armature 815 and its normally closed contact the following circuit: earth, armature 815 and its normally closed contact, armature 820 and its working contact, armature 837, winding of electromagnet 807 of the IP connector towards the battery. The electromagnet 807 is excited but since it works on the principle of activating its mechanism when it is released, the brushes will not advance, not at this moment. Note that by armature 815 and its working contact the circuit of relay 777 is open but this relay is slow enough to release that to allow it to remain attracted for the duration of a train or a duration of pulses. .

   Relay 763 closes through armature 862 the following circuit: earth, armature 865, armature 862 in its rest position, armature 870, armature 900 in its rest position, brush 950 of the IP connector on contact l, winding from relay 892 to the battery. The relay 892 attracts and is blocked by the armature 903 towards the earth to the armature 856 (Tig. 35) of the relay 778 (fig. Si), The more the impulse is also transmitted through the go4 conductor, contact 1 and brush 959 of the OP connector, armatures 880, 873, brush 967 from the OF finder to the converter.



   At the end of the first pulse, relays 763

  <Desc / Clms Page number 113>

 and 764 re-attract and the earth is consequently removed from the brush 950 and from the winding of the electro-grinder 807.



  The IP connector therefore advances to contact 2.



  With the second pulse, relays 7.63 and 764 release again and the earth is again extended to brush 950 in position 2 and to the winding of relay 893.



  Relay 893 attracts and blocks. The pulse is also transmitted via contact 1 and brush 960 of the OP connector, by armatures 881 and 874 and by brush 968 from the CF seeker to the converter. At the end of the second pulse the relays 763 and 764 reactivate and the earth is again removed from the brush 950 and from the winding of the electromagnet 807. The IP connector therefore advances to contact 3 During the third pulse, relay 764 alone releases so that no earth is applied to brush 950 and no pulse is repeated towards the converter. However, the brushes of the IP connector advance to position 4.

   In this position the following circuit is established: earth, armature 861 (fig. 39), brush 953 of the IP connector on contact 4, armatures 898, 897, winding of the electromagnet 809 of the OP connector towards battery. A bypass of this circuit also goes through ccontact 878 of relay 788 and brush 972 of finder 07 to the converter.



   The electromagnet 809 is energized by the above circuit but since the connector is mounted to be actuated when the electromagnet releases, the brushes do not advance at this time. By the fourth pulse, no pulse is transmitted through brush 950 of the IP connector or to the converter, but relay 764 releases to 'advance the dual brushes

  <Desc / Clms Page number 114>

 IP connector up to position 5. With brush 953 on contact 5 the circuit Indicated above for the electromagnet 809 is open so that it de-energizes and the brushes of the OP connector advance up to 'to contact 2. In addition, the circuit passing through brush 971 of the CF researcher is also interrupted. The first digit is then put in reserve.



   The second digit is reserved in group II of counting relays. These relays are not shown but are connected to contacts 5 to 8 associated with the retort 950 brush; it is indicated by the conductors II grouped under the same bracket. In addition, during the fourth pulse of the second digit, the brushes of the OP connector go from position 2 to position 3 by an earth connected to the brush 953 on contact 8, by the armature 897 and then as indicated above. . The third digit is placed in reserve in group III of the counting relays connected to contacts 9 to 12 associated with brush 950 while the brushes of the OP connector go from position 3 to position 4 via an earth connected to brush 953 on the contact 12, through frame 899 and thence to frame 897 as previously indicated.

   The fourth, fifth, sixth and seventh digits are recorded in the same manner, with the pulse repeater circuit for the seventh digit passing through contact 25 associated with brush 950 and contacts 1 through 3 associated with brush 951.



   As noted above the first seven digits constitute the number of the called subscriber and therefore are the only digits which must be stored in the converters, the function of the converter being to transmit by the 'intermediary of the inter-

  <Desc / Clms Page number 115>

 city, the numbers needed to establish communication. For this reason, only contacts
1 to 7 associated with brushes 959 to 962 of the OP connector, are connected to the pulse repeater circuit passing through brushes 950 and 951 of the IP connector. These connections are generally indicated by the conductor marked II-VII and by contacts 2 - 6 grouped under the same brace which are associated with brushes 959 to 962.



   The next digit to be received is the special digit.



   For a normal long distance call established by a subscriber as indicated in the description of the recorder translator, no "special" figure is to be transmitted and therefore no impulse is transmitted by the positive conductor so that the brushes of the IP connector pass without on the four contacts / no pulse is repeated by the brushes of the connector.

   If the call, although intended for an office in another zone, is to be considered as a normal rate call, for example a call from Hautrage to Blaton when the latter is of the automatic type, or if the call is established by an operator of a manual office, for example a call coming from Hautrage to Blaton when the latter is of the manual type, the special digit "9" will be transmitted and will have the effect of '' prevent a ticket from being printed. Therefore when this digit is received, and because it consists of a positive pulse as only the third pulse in the series, a ground is connected to the brush.
951 in position 6 to cause the attraction of the relay 776.

   Relay 776 attracts and blocks by armature 829 and an earth by armature 860; by reinforcement 832 it removes the earth from the contact associated with the reinforcement
840 in order to prevent the CF finder, upon release

  <Desc / Clms Page number 116>

 converter, to perform an automatic search for a free printing machine controller.



   By armature 831 it closes a circuit for relay 782 which, as described below causes the return to its normal position of the IP connector if no other digit is transmitted by the recording translator; and by the frame 830 prevents taking into account the duration of the call.



   It is therefore understood that if it is decided that a ticlet is printed for a call coming from Hautrage to Blaton, even if this call is at normal rate, that the special digit should not be transmitted in this case.



   There is yet another case where the special digit comes into play when the caller desires some additional information such as how much to pay for a call. In this case the special number "o" is transmitted and an earth is given through the brush 951 in position 7 to cause the attraction of the relay 905 which is blocked by the contact 906 and an earth at the break 860 The result of this maneuver will be described below.



   The next five digits to be received constitute the calling subscriber number and these digits are registered by the counting relay groups IX to XIII (not shown) in the same manner as that indicated for the preceding digits. However, the caller's number will not be repeated to the converter.



   Finally, the fourteenth digit to be received is the digit indicating the tariff to be applied to the communication and this digit is to be recorded by the group of metering relays XIIII (not shown).

  <Desc / Clms Page number 117>

 



   Note that the IP connector must be able to receive 56 pulses during the reception time of the fourteen digits. The connector has only fifty contacts, however, and in order to increase its capacity, brushes 950 and 951 are disconnected at the end of the fifth pulse and brush 952 is connected in their place.



  When the brush 954 is located on the contact 25 to receive the fiftieth pulse, the following circuit is closed: earth at the armature 861, brush 954 on the contact 25, armature 896, upper winding of the relay 771 towards the battery. Relay 771 is a two-stroke relay and only closes its frame 902 marked "X" at this time. After the fiftieth pulse has been received, however, and the IP connector has advanced one step, the earth applied to the upper winding of relay 771 is removed and the relay draws fully through the following circuit: to armature 861 , armature 902, the two windings of relay 771 in series towards the battery.

   By armature 900 the relay 771 prepares the circuit to give a ground through the brush 952 instead of through the brushes 950 and 951 to receive the pulses from the 5th to the 56th.



   When the 56th pulse is received the following circuit is closed: earth at armature 861, brush 953, of the IP connector in position 7, armature 901 of relay 771, winding of relay 782 towards the battery. The relay 782 attracts and blocks by the armature 836 and an earth given by the armature 861; .by armature 833 it closes the following self-interrupting circuit for the electromagnet 807 of the IP connector: at the head contacts 907 (fig.



    32 -), 'armatures 908, 833, 824, switch contact 914, winding of the electromagnet 807 towards the battery. The

  <Desc / Clms Page number 118>

 The brushes of the IP connector are brought into the position shown when the contacts 907 open to interrupt the excitation circuit of the electromagnet. Moreover, through the armature 837, the relay 782 disconnects the electro-airnant 807 from the rest contact associated with the armature 815 and connects it to the armature 918.



   Although the circuits shown are designed to be actuated by code pulses of the form indicated above, it is understood that other forms may however be used. For example, pulses can be transmitted by the positive or negative conductor, those transmitted by the positive conductor serving to actuate a relay for recording and to advance the IP connector, while those transmitted by the negative conductor advance the signal. IP connector and do not operate the relay for registration.

   This arrangement has the advantage that a clearer control can be carried out since if an impulse on one of the conductors is ineffective, the relay 782 will not be actuated while in the case described in detail above, the relay 782 attracts if all the impulses transmitted by the negative wire are effective independently of the impulses transmitted by the positive wire.



  Failure of relay 782 to operate may then prevent the conversation circuit from being closed so that communication will not be established.



   The converter then completes its operation, then the negative is removed from brush 971 to cause the release of relay 780 followed by the release of relays 787, 788 and 786 while relay 789 is kept attracted by its blocking armature 852 and an earth. to the frame 871.

   The conversation circuit is then established through the control circuit of the inter-

  <Desc / Clms Page number 119>

 and the transformer 811, whose lower secondary winding is connected directly to the output conductor 759 of the trunk line while its upper secondary winding is connected to the output conductor 760 through the armature 863 of the relay 787 and its NC contact, NC contact and armature 921 from relay 784 to conductor 760. It is possible that the converter may have completed its operation before all information has been stored in the drive. trunk line control circuit.

   To avoid this it may be necessary to defer transmission of the last digit from the converter after a predetermined number of digits, for example twelve digits, has been stored in the trunk line control circuit. Such a provision has not been shown in the plans but the method of operation will be. easily understood by those skilled in the art.



   The circuit remains in these conditions until a momentary AC signal is returned from the remote office to indicate that communication has been established with the called subscriber. This signal causes the momentary attraction of relay 770, the alternations of the same direction passing from the lower terminal of the upper secondary winding of transformer 811 through the upper winding of relay 770, the dry rectifier 922 in the conductive direction towards the upper terminal of the lower secondary winding while the alternations of opposite direction pass from the upper terminal of the lower secondary winding, through the lower winding of the relay 770, the dry rectifier 923 in the conductive direction towards the lower terminal of the secondary winding

  <Desc / Clms Page number 120>

 upper daire.

   The two windings of relay 770 are arranged such that the alternations of opposite directions act in the same direction to cause the pull of the relay. The relay 770 by the armature 925 causes the relay 765 to close its armature 864 marked "X" and at the end of the signal this relay draws fully by: earth, armatures 818, 864, the two windings of the relay 765 in series towards the negative. If the call is established by an operator, it will be remembered that relay 776 is activated.

   Due to the attraction of the relay 765 by the armature 866 the auxiliary battery is extended from the conductor 758 to the armature 823 of the relay 776, the armature 819 towards the private conductor 752 which without causing the connectors to loosen. à Hautrage is used to give an indication to the operator position marking the establishment of the communication.



   When the called subscriber answers another momentary AC signal is passed back to the trunk line control circuit to re-initiate the pull of relay 770 as described above. Relay 770 through armature 925 closes a circuit for the two-stroke relay 766 through armatures 863 and 911. Relay 766 draws to actuate its armature 912 marked "X" and closes a circuit for relay 767 to through armature 926 to earth to armature 818. Relay 767 by attracting gives the possibility of supervision by armatures 813 and 814 by reversing the battery power supply on the calling side. At the end of the signal, relay 766 draws fully and by means of armature 913 it causes the duration of the call to be determined.

   If the call is not established by an attendant, this duration is given by the 5 pulses in

  <Desc / Clms Page number 121>

 5 seconds transmitted by conductor 755 to cause the advancement of the IP, T and OP connectors. As we remember, the IP connector has returned to its normal position while the OP connector is in its eighth position. The T connector is also in its normal position.



   The first pesitive pulse transmitted by the conductor 755 passes through the armatures 830, 927, 913, the winding of the relay 773 towards the battery. The relay 773 attracts and by the armature 918 closes the following circuit for the electromagnet 807 of the IP connector; earth to armature 918, armature 837, winding of the electromagnet 807 towards the battery. The electromagnet attracts and at the end of the pulse releases to move the brushes from the IP connector to contact 2. The IP connector is therefore required to take one step every five seconds to determine the duration of the conversation. .

   When the fourth pulse is received when the brush 953 is on contact 4, the following circuit is closed: earth at armature 861; brush 953 on contact 4, armatures 910, 930, contact 1 and brush 957 from connector T, switch contact 933, winding of electromagnet 808, upper low-resistance winding of relay 777 to battery. The electromagnet attracts and by its switch contacts opens the circuit indicated above from which it follows that the electromagnet releases and advances the brushes to contact 2.- Moreover when the brush 953 is brought to contact 5 at the end of the fourth pulse another point of the excitation circuit of the electromagnet 808 is open.

   By brush 957 on contact 2, however, another circuit is closed for the electromagnet 808 as follows:

  <Desc / Clms Page number 122>

 armature 931 (fig. 38), multiplier of bench and brush 957, switch contact 933, windings of electromagnet 808, upper winding of relay 777 towards the battery.



  The brushes of the T connector then advance to contact 4, position for which the electromagnet excitation circuit is open. Connector T then remains in this position for a period of three minutes and brush 991 is on contact 11 when earth is given through the upper winding of relay 772, contact 4 and brush 957, the contacts in - switches 933, the windings of the electromagnet 808 and the upper winding of the relay 777 towards the battery.



  Relay 772 is a high resistance relay and attracts through this circuit although the electromagnet does not. The relay 772 is blocked by its lower winding and the armature 932 by means of an earth given to the armature 867 and by the armatures 930 and 931 opens points of the first two excitation circuits indicated above for the electromagnet 808. The further advancement of the T connector is therefore under the control of the IP connector and it is combined so that the T connector takes one step every minute. From then on receiving the twelfth pulse with brush 953 from the IP connector on contact 12, the following circuit is closed: earth at armature 861 (fig. 39), brush 953 from IP connector on contact 12, armatures 899,990,916, windings of the electromagnet 808 to the battery.

   The brushes of the connector T therefore advance to contact 5 at the end of the twelfth pulse. The reason why the T connector advances to contact 4 after twenty seconds is that although the tariff for communications is based on a minimum duration of three minutes,

  <Desc / Clms Page number 123>

 the subscriber is warned twenty seconds in advance of the duration of the call.



     - The duration of ten minutes for a conversation is recorded by the OP connector, which will be remembered is in position 8. For this purpose when the connector
T has taken ten steps and that it is on contact 11, the impulse at five seconds which will follow, will give a ground through the brush 958 of the connector T on the contact 11, the armature 915 and the windings of the 'electro magnet
809 to the battery. At the end of the pulse, the brushes of the OP connector pass to contact 9.



   It will be noted that in order for the positions of the brushes of the connector T to be the same for the successive half-revolutions, it is necessary to ensure that at. end of the first ten-minute period, the brushes of connector T are brought to contact 14; andthat at the end of the second ten-minute period the brushes are brought to contact 1 and so on. Consequently at the end of the tenth minute the brush 957 passes on the contact 11 which is multiple to the contacts 12 and 13 and connected to the earth. An obvious self-interrupting circuit is therefore established for the electromagnet.
808 and the brushes advance until contact 14.



   It is of course necessary to give the brushes of the IP connector the possibility of taking an additional step when they reach the 25th contact and for this purpose this contact associated with the brush 953 is connected to the contact associated with the contact. armature 908 while the .25th contact associated with brush 954 is connected to the contact associated with armature 909. Thus at the end of the '24th, pulse a circuit is established as follows: earth at armature 861, brush 953, on contact 25, armatures 908,
833, 824, switch contact 914, windings of the

  <Desc / Clms Page number 124>

 8D7 lcctro-magnet towards the battery. Brushes 950, 952 and 953 therefore leave the 25th contact and brushes 951 and 954 pass over contact 1 in order to receive the next pulse.

   Likewise at the end of the 48th pulse with the brush 954 on the contact 25 a similar circuit is closed and also passes through the armature 909 so that the brushes 951 and 954 leave the contact 25 and the brushes 950, 952 and 953 switch to contact 1.



   Normally the operation of determining the duration of the conversation stops only at the end of the conversation, but if a call lasts ninety minutes a signal can be given. This characteristic is important since keeping the equipment in operation for such a long period could indicate a fault which would have had the effect, for example, of giving a permanent earth on the line of the calling subscriber or on the junction line between Hautrage and Mons.



  Consequently at the end of the 99th minute the brush 956 of the T connector will be on contact 10 and the brush 964 of the OP connector will be on contact 17. The following circuit is then closed: earth, brush 956 on contact 10 , upper winding of relay 774, contact 17 and brush 964, armature 816 to the battery through resistor 934. Relay 774 attracts and blocks by its lower winding and armature 928 by a ground given to armature 861; by armature 927 it opens the circuit between conductor 757 and relay 773 and by armature 929 it places an earth on conductor 761 to give an alarm.



   The determination of the duration of a conversation ends at the end of the conversation when the caller hangs up his receiver and the relays 765 and 764 release. L3

  <Desc / Clms Page number 125>

 relay 764 opens the relay circuit by the armature 815
777. Relay 777, by slowly releasing, by armature 819 and its work contact, eliminates the earth of conductor 752 but this earth is replaced at its rest contact by armature 854 (fig. 41) and finally by armature 818 relay 777 opens the relay circuit 781,
765 and 766. During the relay release period
781 a circuit is however closed from the earth given by the armature 818 of the relay 777, through the armature 827, the brush 963 and the bank contact determined by the number of ten minute periods ,, l winding of one of the relays 935 to 938 towards the battery.

   A branch of this circuit passes through the armatures 843 and 816 to the brush 964 and the bank contact to end in the winding of another of these same relays. The operation of the group of relays 935 to 938 according to the number to be stored can be deduced from fig. 18 if we replace references 1, 2, 3 or 4 in the upper horizontal row respectively by 938, 937,936 and 935. So that if the call lasts less than ten minutes, the connector
OP will not be advanced and will therefore remain on contact 8. When releasing relay 777 the relay
935 will therefore be drawn through brush 963, but no relays will be drawn through brush 964 as shown in the table. Relay 935 is blocked through armature 989.by an earth given by armature 855 (fig. 35).

   This earth also passes through the contact associated with the armature 939 to the contact
18 associated with brush 962 if the registered number is such that one or two of the other relays 935, 936, 937 and 938 are - drawn, the blocking earth will be extended to the appropriate contacts, associated with brushes 959 to 962 of a

  <Desc / Clms Page number 126>

 analogous way.



   Connection of the battery to solenoid 808 of connector T is given through the upper winding of relay 777 to ensure that if the caller hangs up while receiving a pulse, the circuit operating relays 935 to 938 will be closed until the end of the pulse due to the continued excitation of relay 777.



   The circuit which gives a ground to the brushes 963 and 964 is opened by the armature 827 when the relay 781 finally releases. Moreover the relay 781 by the armature 828 closes the following circuit for the relay 790; earth to armature 815, armatures 820, 828, 872, winding of relay 790 to the battery; by armature 8:, 4 it closes a self-interrupting circuit for the electromagnet 807 by an earth at the head contacts 907 in order to bring the IP connector back to contact 1 and finally by armature 826 the relay 781 closes a self-interrupting circuit for the electromagnet 810 of the CF researcher.

   The relay 790 establishes by the armature 845 an excitation circuit for the solenoid 809 of the connector through the brush 966 and a ground given to the armature 888. The OP connector therefore advances to position 17 unless it sc already found on this position. A circuit is then established for relay 783 as follows: terle, armatures 850, 846 (fig. 41), brush 965 on contact 17, winding of relay 783 towards the battery. The rolais 783 attracts and is blocked through the frame 889 by an earth given to the frame 851.



   It will be seen that the CF researcher provides access through contacts 1 to 20 to converters and through contacts 31 to 25 to printing machine control devices.

  <Desc / Clms Page number 127>

 



    To. to be able to connect the trunk line control circuit to a printing machine control device, the OF researcher therefore has to advance automatically to contact 21 from which it advances until it finds a free printing machine control device. The circuit for automatically advancing the CF seeker brushes to position 21 is established as follows: earth 'to armature 832 (fig. 39), armatures 835, 826, 840, switch contacts 841, windings of the 'electromagnets 810 to the battery.



  When the finder brushes reach position 21, the cam springs 842 are actuated and the following test circuit is established: at armature 868 (Fig. 39); armature 834 and its working contact, armature 825 and its contact at rested the two windings' of relay 780 in series, cam springs 842 in their working position, contact and armature 844 and brush 971.



  A printing machine controller which is busy is indicated by a ground which is extended through brush 971 to bypass relay 780 while a printing machine controller which is free is indicated by a negative which attracts relay 780. Attracting relay 780 blocks through its upper winding and armature 839; by armature 840, relay 780 opens the excitation circuit of electromagnet 810 and by armature 838 closes as previously indicated a circuit for relay 787 which attracts followed by relay 788 which is actuated by an earth given by reinforcement 890 (fig. 40).



   The current situation is therefore the following: the trunk line control circuit is associated by the finder. CF to a printing machine control device. In addition, the control circuit

  <Desc / Clms Page number 128>

 long-distance line request has recorded the number of the subscriber called by relay groups I to VII, the number of the subscriber calling by relay groups IX to XIII, the tariff that must be applied to the call for the relay group XIV and the duration of the communication in minutes through connector T and relay group XV.



  The next operation consists in transferring this information recorded and held in reserve or control device of the printing machines.



   The transfer begins with the pulling of relay 783 as described above when the lead 755 giving the pulses sends positive pulses at the rate of 15 per second and is connected through the armature 885 of relay 783. , armature 943 and the top winding of relay 785 to the battery. Relay 785 attracts its armature 944 marked "X" at the start of the first pulse and at the end of this pulse draws fully through the two windings in series by an earth given to armature 861. By armature 943, relay 785 transfers the conductor giving the pulses to the winding of relay 786. Relay 786 repeats through armature 884 the pulses to. from an earth given by the armature 886 (fig. 40) to the electromagnet 809 of the OP connector.

   On reception of the second pulse, relay 786 attracts to excite the electromagnet 809 and through the armatures 880 to 883 connect the brushes 959 to 962 to the brushes 967 to 970 through the plates 873 to 876 of the relay 788. Note that the contacts 17 associated with the brushes 959, 961 and 962 of the OP connector are connected to the group of metering relays XIV (not shown) on which the characteristic figure of the tariff to be applied is recorded. The rates are

  <Desc / Clms Page number 129>

 established in such a way that the figure which determines them can be one of the five figures reserved for this purpose and therefore only three relays will be used for group XIV.

   The earth is therefore extended from the armature 855 (fig. 35) of the relay 778 (fig. 39) through the blocking contacts of the activated counting relays, the contacts 17 of the brush banks 959, 961 or 962, armatures 880, 882 or 883, armatures 873, 875 or 876, brushes 967, 969 or.



  * 970 from researcher CF, to the control device of the printing machines. At the end of the second pulse, relay 786 releases and the OP connector brushes advance to the 18th contacts. The contacts 18 of brushes 959 to '962 are connected to the contacts associated with the blocking armatures of the group XV relays on which the ten-minute periods are recorded. This information is transmitted to the control devices of the printing machines in a manner analogous to that described for the figure determining the tariff. With the OP connector on the contacts 19, the connections are established from the brushes 955 and 956 of the T connector in order to transfer the periods evaluated in minutes to the control device of the printing machines.

   Contact 20 associated with brush 962 is connected to the blocking circuit of 'relay 905 so that a circuit' is then established to the printing machine controller if the caller wishes to know the cost of the printing machine. communication. Dontacts 21 to 25 of the OP connector are connected to the counting relay groups IX to XIII to transfer the caller's number to the control device of the printing machines. The brushes of the OP connector advance to contact 1 and

  <Desc / Clms Page number 130>

 then continue to advance to contact 8 under the control of relay 786 and during this time the number of the called subscriber which is registered on the groups of counting relays I to VII is transferred to the control device of the printing machines.



   Of course, the information should not be transferred in the order listed. For example the indication of the asterisk can be transferred to the other place.



   All the necessary information is then recorded by the control device of the printing machines and the control circuit of the trunk line can be released. When the OP connector brush 965 reaches contact 8, a circuit is established from ground to armature 850 (fig. 41), through armature 846, brush 965 on contact 8 and armature 891 towards the junction point of the windings of relay 779. The lower winding of this relay is therefore bypassed and since the upper winding alone cannot keep the relay attracted, the latter releases.

   Relay 779 opens by armature 869 its own blocking circuit; by armature 868 it opens the blocking circuit of relay 780 which releases; by armature 867 and its working contact it opens the circuit of relay 762 which releases; by the armature 871 it opens the circuit of the relay 778 which releases and it opens at the same time a point of the blocking circuit of the relay 789; and by armature 872 it opens the circuit of relay 790 which releases slowly.



  Releasing relay 780 opens by armature 838 the circuit of relay 787 which releases; by armature 839 it opens its own blocking circuit at another point and by armature 840 it closes at one point the return circuit to its rest position for the electromagnet

  <Desc / Clms Page number 131>

 810 of the researcher CF. The relay 787 causes the release of the relays 788 and 789 and the relay 789 by the armature 851 causes the release of the relay 783; and by the armature removes 854 / ground to conductor 752 in order to make the trunk line control circuit free and available for further calls.



   Releasing relay 783 disconnects via frame 885 the conductor 753 giving the impulses of the coil of relay 786; by armature 886 it disconnects the earth of armature 884 of pulse repeater relay 786; by the frame 888 causes the return to its rest position.



   Relay 772 by releasing, through armature 931, closes the following circuit for the electromagnet 808 of the T connector: earth to armature 931, bank multiplication and contact associated with brush 957, switch contacts 933, winding from the electromagnet 808 to the battery. The connector T therefore returns to its normal position.



  An earth is then placed when the relay 778 is released by the armature of the brush 958 on the contact 1, the armature 858, the contact 17 associated with the brush 966, and like the other contacts are earthed through contact 1 associated with the brush 958 and the armature 859, the brushes of the OP connector will consequently return to their normal position.



   Releasing the 778 relay removes by the arma-. tures 855,856, 857 (fig. 35) and 860 the blocking earth of all counting relay groups so that the relays which are actuated release. In addition, through the reinforcement 861, it removes the general guard earth to allow relays 782 and 785 to release.



   Relay 790 by releasing restores by armatures 844 and 845 the first test circuit of the researcher

  <Desc / Clms Page number 132>

 CF to allow it to automatically search for a converter when the trunk line control circuit is entered by a new call.



   It will be noted that the CF researcher is again located on the contacts which provide access to the control device of the printing machines. When the trunk line control circuit is used for another call, the following auto-breaker circuit is closed when pulling relay 781: to armature 832 (fig. 39), armature 835, armature 826 in its working position, armature 840. switch contact 841, windings of the electromagnet 810 towards the battery. The brushes therefore advance to contact 1 and during this time no test circuit can stop the connector since the cam springs 842 are in their working position.

   In position 1, however, these springs return to their normal position and a test circuit is then established through the brush 971 as previously described.



   In the above circuit, provision has also been made for modifying certain tariffs if the call is established between 7 p.m. and 7 a.m. The characteristic tariff figures 1 and 2 represent the respective tariffs of 5 and 3 francs and things are combined so that the tariff in these two cases is reduced to 1.80 francs.

   This is achieved by an earth which is given by the device for determining the date and duration of the communication and in the manner indicated below, to the conductor 754 to cause the relay 762. It will be seen that the two digits 1 and 2 cause the first two relays and the first and third relays of the appropriate relay group to operate respectively. We\

  <Desc / Clms Page number 133>

 will notice however that contacts 4 and 5 associated with brush 952 of the IP connector (, fig. 32) are? connected to the windings of the recording relays respectively by the armatures 993 and 992. As a consequence with the relay 762 attracted, the first relay only of the metering relays is drawn due to the reception of the characteristic digits of tariff 1 or 2.

   In this case the attraction of the first relay of the group represents the number 7 which is equivalent to the price of 1.80 francs. A rate conversion has therefore been carried out.



   Detailed description of the translator-recorder or converter.



   This circuit which as previously explained is captured by the trunk line control circuit through the CF finder serves to control the transmission of direction digits required by the trunk line to control the establishment of communication in the remote office. It will be remembered that when the number of the called subscriber was received in the trunk line control circuit, this number was provided in reserve in this circuit and also repeated by the brushes of the CF searcher to the converter. This number is also kept in reserve in the converter.

   As explained previously, this number comprises the two digits representing the zone of the called subscriber as well as five digits representing the local office and the number of the called subscriber. The two digits for the zone are transmitted to cause transmission of up to five digits while in a non-decimal system / the local five digits are transmitted without being translated. According to a conversion basis each digit is converted into a pulse train with a maximum of 20 pulses

  <Desc / Clms Page number 134>

 per train and these pulses act on connectors located at the remote office and having 20 positions.

   The position of these connectors is not related to the path in which the communication is routed but determines other factors such as the insertion of repeaters or the quality of the "good" or "poor" junction to be used for the connection. subsequent routing of the communication. Finally, the local number of the called subscriber is transmitted according to its initial numerical value.



  All the pulses transmitted by the interurban line are in the form of alternating current pulses.



   A detailed description will now be given of the operation of the converter. It will be remembered that when the converter is seized by the TLCC control circuit of the trunk line, an earth is given through the brush 972 of the CF researcher, and that it is then extended by the brush 1005 of the connector IP1 on the contact. 1 in parallel through resistor 1054 to the battery and through the winding of relay 1036 to the battery, the battery resistor serving to prevent double seizure of the circuit. Relay 1036 attracts and through armature 1058 closes the following circuit for relay 1028: earth to armature 1058, brush 1026 of connector S in position 1, winding of relay 1028 towards the battery.

   In addition by the armature 1059, the relay 1036 closes a starting circuit for the pulse generator which carries the pulse contacts 1084 and 1092. It should be noted that with regard to these pulse contacts, contacts 1084 have a breaking period of 33% while contacts 1092 have a breaking period of 66% and in addition the offset of these pulse contacts is

  <Desc / Clms Page number 135>

 such that contacts 1084 are open when contacts
1092 are closed.



   Relay 1028 attracting firm by visible armature
1061 a circuit / for the relay 1029 which by attracting closes by the armature 1065 an obvious circuit for the relay 1030.



  The relay 1030 by attracting by the armature 1070 a circuit through the armature 1074, the winding of the relay
1037, resistance 1083 to the battery. The relay 1037 by attracting establishes by the armature 1079 a parallel circuit with its own winding to connect the pulse contacts 1084 in series with the solenoid 1051 of the connector S. This circuit establishes as follows: earth, armatures 1070, 1074, pulse contacts 1084, armatures 1079, 1085, electromagnet windings 1051 to the battery.



   Note that the 1092 pulse contacts are connected in series with the relay winding
1028, but these contacts have no effect on relay 1028 at this time due to the short circuit that exists by brush 1026 of connector S in positions 1 and 2.



   Furthermore, the relay 1037 establishes by the armature 1077 an excitation circuit from the earth to the armature 1071 for the electromagnet 1047 of the connector OP1.



  This electromagnet is excited to prepare the advancement of its brushes.



   When brush '1026 passes over contact 3, the Initial circuit of relay 1028 is opened and the relay is then under the control of pulse contacts 1092.



  It follows that when the brush 1026 is passed over the contact 3 during the opening of the contacts 1084 at the end of the second acting pulse, the contacts 1092 close. At the end of the closing period the

  <Desc / Clms Page number 136>

 contacts 1092 open and relay 1028 releases.

   An alternating current signal is then transmitted through conductor 1086 connected to a terminal of the 60 period current source, through armatures 1060, 1063, armature 1088 and its rest contact, conductor 1052 and thence through. trunk line control circuit to trunk line positive conductor, loop to remote office, trunk line negative conductor, through trunk line control circuit, to conductor 1053, the armature 1089 and its rest contact, the armatures 1066,1062, the conductor 1087 to the other terminal of the current source. At the end of the break period, relay 1028 attracts to terminate the pulse and simultaneously the electromagnet 1051 de-energizes to advance the brushes of connector S to position 4.

   With brush 1024 in position 4, the following circuit is closed: earth at brush 1012 of connector OP1 on contact 1, contact 4 and brush 1024 of connector S, armature 1094, winding of relay 1038 towards the battery.



  The relay 1038 attracts and is blocked by the multiplication of bank and the contact 4, the brush 1026 towards a ground with the frame 1058; by armature 1076 it closes a shunt at the terminals of the pulse contacts 1092 to prevent the subsequent release of relay 1028; by armature 1071 it opens the excitation circuit of electromagnet 1047 which releases and advances the brushes of the OPL connector to position 2; and by the armature 1074 it opens the circuit of the relay 1037 and the pulse circuit of the electromagnet 1051. However, the relay 1037 on releasing closes the following self-interrupting circuit for the electromagnet 1051: brush earth 1027, contact 4 and bench multiplication, armature 1082, switch contacts 1091, electromagnet windings 1051 towards the battery.

   The brushes of connector S therefore pass over the contact

  <Desc / Clms Page number 137>

 15 when the following circuit is established for relay 1037: earth to brush 1027 on contact 15, armature 1075, winding of relay 1037 to the battery. Relay 1037 attracts and again causes the impulse contacts 1084 of the circuit of the electromagnet 1051 to be brought under control. The brushes of the connector S therefore advance to position 23 for which the first auto-switch circuit acts again to advance the brushes to contact 1. The purpose of this return to its normal position of the connector S partially by steps of a certain duration is to ensure that sufficient time elapses between the pulse trains transmitted by the trunk line as will be described below.

   In position 1 the circuit through the brush 1026 of the relay 1028 is again established while the circuit of the relay 1038 is open. Relay 1038 releases
1037 and by armature 1074 again closes the relay circuit.



  In addition, when the brushes of the OP1 connector pass to contact 2, an earth is given through the brush 1012, the winding of the relay 1033 towards the battery. Relay 1033 attracts and locks through its armature 1090, armature 1102 to earth to armature 1055 through armatures 1088 and 1089 relay 1033 disconnects conductors 1052 and 1053 from the AC source and loops through. the upper winding of relay 1032.



   During the above operation, the number of the called subscriber has been put in reserve by the groups of counting relays from 1 to VII. These digits are received in the converter through brushes 1000 to 1003 of the IPI connector and are used to actuate the appropriate relays in relay groups I to VII.



  These figures are in code and the combination of relays which are actuated can be deduced from figgure 18 if we substitute the indications 1041, 1042, 1043 and 1044 of the same

  <Desc / Clms Page number 138>

 respectively to references 1, 2, 3 and 4 indicated in the upper horizontal row. The first digit will cause the appropriate relay to be pulled from among the relays 1041 to 1044 through the brushes 1000 to 1003 in position 1.

   At the same time and each time a digit is received a positive pulse is transmitted by the control circuit of the trunk line and through the brush 1006 and the bank multiplication passing through the winding of the electromagnet 1046 to the battery. the electromagnet therefore attracts and when the positive pulse is completed at the end of the digit, the brushes of connector IP1 move to the second position so that the second digit is put in reserve on the group II of counting relays. The other digits are kept in reserve in a similar way and at the end of the stored digit the brushes of connector IP1 go to contact 8.



   Remember that the first two digits represent the zone of the called subscriber and in order to ensure the transmission by the interurban line of the correct pulse trains according to the non-decimal system, the two-movement connector TD4 is activated according to the numeric value of the first two digits. Suppose that by the time the circuit of relay 1037 is established for the second time as described above, the first digit has been stored on the group I of the counting relays, the relay 1037 draws on and establishes as previously indicated. a circuit for the electromagnet 1051.

   The brushes of the S connector go beyond position 2 to the third

  <Desc / Clms Page number 139>

 position as previously described when relay 1028 is placed under the control of pulse contacts 1092 which have just closed. At the end of the closing period, relay 1028 releases and a circuit is established from earth to armature 1061, by armature 1064, brush 1014 on contact 2, the windings of the electromagnet of ascent 1048 towards the battery. The electromagnet of the connector S and the ascending electromagnet of the TD4 connector then simultaneously advance the number of pulses which are to be sent to the ascending electromagnet being determined by the brushes 1022 and 1023 of connector S at the same time as by brushes 1008 to 1011 of connector OP1.



  So suppose that the numerical value of the first digit is 1. Then the relays 1041 and 1042's will be attracted and when the relay 1028 has transmitted the first pulse and the connector S has advanced to position 4 the circuits The following are established: earth to armature 1067, blocking armature 1095, contact 2 and brush 1008 of connector OP1, contact 4 and brush 1022 of connector S, right winding of relay 1039 to the battery. An earth is also given to the armature 1067 and extended by the blocking armature 1096, contact 2 and brush 1009 of the Opl connector contact 4 and brush 1023 of connector S, the left-hand coil of the relay 1039 to the battery.



  Relay 1039 only pulls when its two windings are energized. In this case therefore the frame 1099 is attracted and a circuit is established for the relay 1038 which attracts, bypasses the pulse contacts 1092 and causes the release of the relay 1037 and the return to its normal position of the connector. S

  <Desc / Clms Page number 140>

 as described previously.



   If, however, the numerical value of the digit had been "0", relay 1041 alone would have been drawn.



  In this case with connector S in position 4, a circuit would have been closed for the right winding only of relay 1039. The relay does not attract and relay 1028 continues to repeat the pulses towards the solenoid d. 'ascent. In addition, it should be noted from the connections made to halais 1022 and 1023 that the two windings of relay 1039 are not energized simultaneously until the brushes reach the 13th contacts, that is to say until so that ten pulses are sent to the ascending electromagnet. The armature 1099 is then attracted to energize the relay 1038 and give the results described above.



   Note that if when the circuit of relay 1057 is established for the second time the first digit has not yet been stored, it is necessary that the relay 1037 cannot attract.



  Consequently at this moment the brushes of the OP1 connector are in position 2 and if the first digit has not yet been stored, the brushes of the IPI connector are always in position 1. A ground is then given by the brush 1004 of the IPI connector on contact 1, contact 2 and brush 1013 of the OP1 connector, resistor 1083 to the battery. The relay 1037 is therefore bypassed and can only attract when the brush 1004 passes over the contact 2, that is to say when the first digit has been stored. A similar precaution is taken with regard to the storage of the second and subsequent digits although the detailed circuits are not shown.

  <Desc / Clms Page number 141>

 



   The OP1 connector steps up to contact 3 when releasing relay 1037 at the end of the upward movement of connector TD4 with two movements and it follows that the following series of pulses have repeated from analogously to the rotational solenoid 1049. The numerical values of the two field digits are therefore recorded by the vertical and rotational positions of the two-move TD4 connector. The pulse trains which are to be transmitted are determined by the distribution connections connecting the banks of the two-movement connector and the two banks associated with the brushes 1024 and 1025 of the S connector.

   In this particular case, the necessary steps have been taken for the transmission of up to five pulses by means of distribution connections connecting the banks associated with the brushes 1016 to 1020 of the TD4 connector and in addition each pulse train can comprise up to 20 pulses. .



   The transmission of the pulses by the converter begins when the brushes of the OP1 connector pass to position 4 at the end of the rotational movement of the TD4 connector. Before the transmission of the pulses begins, however, a signal has been transmitted by the remote office to indicate that the equipment is in the condition required to receive the pulses.



  Before receiving this signal, a ground is given by armature 1103, contact 4 and brush 1013, resistor 1083 to the battery to prevent operation of relay 1037. When the signal which includes the connection of the negative and from the earth to the conductors of the trunk line is received, the relay 1032 attracts and blocks by its armature 1101 parked "X" to a ground at the armature 1069 and by the armature

  <Desc / Clms Page number 142>

 1103 and removes the shunt earth to allow relay 1037 to attract in order to start transmitting the pulses.

   In addition, relay 1032 opens its initial excitation circuit by armature 1100 and by armature 1102 it opens the blocking circuit of relay 1033 which releases to prepare the repeater circuit of the pulses to the conductors of the trunk line. by reinforcements 1088 and 1089.



   During operation of relay 1037 the pulse contacts 1084 are again connected to the solenoid 1051 and the brushes of the connector S are again moved from position 1 to position 2. At the start of the next break period pulse contacts 1084, the brushes of connector S go to position 3.



  With the brushes in this position and the brushes of the OP1 connector in position 4, the following circuit is closed: earth to brush 1027 on contact 3, armature 1081 in its working position, lower winding of relay 1031, armature 1057 in its working position, multiplae of bench and contact 4, brush 1015, switch contacts 1109, windings of the electromagnet 1047 towards the battery. Relay 1031 alone attracts by this circuit and is blocked by its armature 1086 marked "X" towards an earth at armature 1072. By armature 1085, relay 1031 disconnects the pulse contacts 1084 from the winding. of solenoid 1051 and connects them to the coil of relay 1034.



   As before when the S connector goes to position 3, the relay 1028 goes under the control of the contacts 1092 and the relay 1028 - releases when the contacts 1092 open and by the armature 1060 and 1062 it transmits the first pulse of a train of im-

  <Desc / Clms Page number 143>

 alternating current pulses on the trunk line and relay 1034 also draws through the following circuit: earth at armature 1070, armature 1074, pulse contact 1084, armatures 1079, 1085, 1093, winding of relay 1034 to the drums. Relay 1034 attracts and prepares a blocking circuit for itself in series with relay 1035 through its armature 1105 marked "X", the staggered contacts associated with armature 1106 to a ground at armature 1078.

   Relay 1035 attracts by this blocking circuit when contacts 1084 are opened again and by armature 1093 it disconnects the pulse contacts of relay 1034 and connects them to electromagnet 1051. Further by armature 1094 relay 1035 connects relay 1038 to brush 1025 of connector S.



   It will be noted that contacts 5 to 14 associated with brush 1024 of connector S are connected to terminals 2, 4, 6, 8 and so on up to 20. Similarly, contacts 4 to 13 associated with brush 1025 are connected to terminals marked's 1, 3, 5, 7 and so on up to 19. If at this time the first pulse train to be transmitted to the converter is to consist of 18 pulses, a distribution connection is made from the bank contact on which is located brush 1016 'from connector TD4 to terminal 18 associated with brush 1024.



   The circuit by which the electromagnet 1051 is. then excited is the following: at frame 1070; armature 1074, pulse contacts 1084, armatures 1079, 1085, 1093, coil of relay 1040 and shunt resistor 1107, coil of electromagnet 1051 to the battery. The relay 1040 also attracts by this circuit and by the armature 1106 and its contacts at work.

  <Desc / Clms Page number 144>

 it closes an additional circuit for relay 1035 through its upper winding to an earth at the armature 1078 while by its contacts at rest it opens the circuit passing through the winding of relay 1034 and the lower winding of relay 1035. Relay 1034 therefore releases while indicated relay 1035 remains engaged.

   When the circuit / above for the electromagnet 1051 and the relay 1040 is opened by the contacts 1084 the brushes of the connector S go to position 4. In this position a circuit leaves from terminal 1 and its corresponding contact by the brush 1025 the armature 1094 in its working position towards the winding of the relay 1030. Since in the example chosen the first pulse train must include 18 pulses, if there are no distribution connections to from the contact on which the brush 1016 of the TD4 connector is located towards. terminal 1 and from there it follows that the relay 1038 is not attracted.



   The relay 1040 also releases at this moment and causes the release of the relay 1035 which by the armature 1094 connects the brush 1024 to the winding of the relay 1038. The impulse contacts 1092 open again to cause the release. of relay 1028 so that the transmission of the second pulse on the trunk line occurs and furthermore the relays 1034, 1035 and the electromagnet 1051 are attracted as previously described and under the control of contacts 1084.



  This interaction continues with two pulses sent over the trunk line at each step of the S connector until brushes 1024 and 1025 pass to contact 13 when the following circuit is established: earth, brush 1012 on contact 4, brush 1016 and connected bench contact

  <Desc / Clms Page number 145>

 at terminal 18, contact 13 and brush 1024, armature 1094 and its rest contact, winding of relay 1038 towards the battery. The relay 1038 attracts to complete the transmission of the pulses on the trunk line and to cause the brushes of the OP1 connector to pass. contact 5 as described above. In addition, the S connector returns to its normal position.

   The time necessary to bring the connector S back and bring it to position 3 to be ready for the transmission of the next series of pulses requires a sufficient pause to distinguish between two successive trains of pulses.



   Assume that five pulse trains are to be transmitted, the operations for each of the following trains are the same as described above and will not be discussed in more detail.



   When the fifth pulse train has been transmitted a ground is given by brush 1012 on contact 9 to brush 1021. The contacts in the levels associated with brush 1021 are bridged together and connected to terminal 1108 from where it s' It follows that the earth to the brush 1012 is extended by the switch contacts 1109 to the windings of the electromagnet 1047. The brushes of the OPL connector therefore pass over the contact 10.



   The relay 1031 is released when the relay 1038 is pulled in and does not attract again due to the position of the brush 1015. The circuit is at this moment in the conditions to transmit without conversion the five digits representing the number of the l called subscriber, under the control of brushes 1022 and 1023 in a manner analogous to the transmission of impulses to the tensioning and rotating electromagnets of the TD4 connector except that the five digits are transmitted on the trunk line

  <Desc / Clms Page number 146>

 relay 1033 having released retort indicated above.



   When the last of the five digits has been transferred, the brushes of the OPl connector will be in poei- tion 15. An earth is then given by the brush 1012 to the contact 15, the bank multiplication associated with the brush 1007 of the IP1 connector, the switch contacts 1112, the winding of the electromagnet 1046 towards the battery.



  The brushes of the connector IP1 therefore advance step by step to position 9. When the brush 1006 leaves contact 8, the relay 1036 is disconnected from the incoming conductor coming from the control circuit of the trunk line. Relay 1036 by armature 1058 removes the general protective earth and by armature 1059 it also removes the earth from the start conductor of the pulse generator.



  Relay 1028 therefore finally releases and causes relays 1029 and 1030 to release. In addition, relay 1036 by armature 1056 closes a self-interrupting circuit for electromagnet 1047 through brush 1015 and the bank multiplication. and the OPI connector brushes return to their normal position.



  Releasing relay 1030 extends through armature 1067 an earth through ascension head contacts 1110 to the release relay winding 1050 of connector TD4. The electromagnet thereby attracts and the connector returns to its normal position. In addition, the relay 1030 by the armature 1068 re-establishes the self-interrupting circuit for the electromagnet 1046, this circuit having been interrupted when the brushes of the connector OP1 have left position 15. By establishing the circuit indicated below. above, however, the brushes of the IP1 connector start to rotate

  <Desc / Clms Page number 147>

 until the next normal position with the brushes on contact 13, position for which the auto-switch circuit is opened by brush 1007.



  In this position, relay 1036 is again connected to brush 1005 and the converter is available for another call.



   It is understood that although the operation of the converter has been described in s, e referring to a system in which the number of the called subscriber comprises a number consisting of two zone digits and five local digits, it may be easily adapted with a slight modification in the dispatch connections to work in the case where the called subscriber number consists of a single zone digit and six local digits. In this case, the first digit of the six local digits constituting the local number is used to determine the rotational position of the two-movement connector TD4 and furthermore this digit is transmitted again as the first digit of the local number. It happens as follows.

   It will be remembered that in the description given above when the five digits determining the direction have been transmitted, the brushes of the connector OP1 are in position 9. In this position the earth at the brush 1012 is extended to the brush 1021.] Without this case the contact on which the brush 1021 will be located is connected to terminal 1108 and from there to the electromagnet 1047 so that the brushes of the OPI connector move to position 10 from which the five local digits are transmitted. .



  No digit is therefore transmitted by the brushes of the OP1 connector in position 9. When the number of the called subscriber includes a zone digit

  <Desc / Clms Page number 148>

 and six local digits, no distribution connection is made between the contact on which the brush 1021 is located and the terminal 1108. In this case, therefore, the digit which determines the rotational position of the TD4 connector is transmitted again. without conversion due to the connection between contacts 3 and 9 to the banks associated with brushes 1008, 1011 of the OPl connector.



  The transmission of the other digits takes place as described above.



   In the description given of the converter it was assumed that five digits for determining the direction would have to be transmitted. This is the maximum number that can be transmitted and it is possible that in some cases a lower number will be required. For example if two direction digits are only needed, then the contacts on which the brushes 1018, 1019 and 1020 are located are all connected to terminal 1108 so that the brushes of the OP1 connector automatically switch to contact 9.

   As noted above for the two-digit zone case, brush 1021 will also be connected to terminal 1108 to advance the connector to position 10 to allow the digits of the local number to be transmitted while for the case of a single zone digit the first digit of the local number will be transmitted with the brushes of the OP1 connector in position 9.



   In the above description the alternating current pulses are transmitted by the converter through the control circuit of the trunk line to the line itself. Since, however, the pulses may be transmitted by lines having different characteristics it may be necessary to make adjustments to the transmission circuits of the pulses.

  <Desc / Clms Page number 149>

 pulses to compensate for these differences. At this time there is no indication stored in the converter as to the type of trunk line to be employed, but the trunk line control circuit has stored this indication.

   It may therefore be advisable for the converter to transmit direct current pulses to the control circuit of the trunk line where they will be transformed into alternating current pulses by a circuit having suitable characteristics.
 EMI149.1



    

Claims (1)

CLAIMS. ---------------------------- l. A telephone system in which the stage of communication which serves to collect the information to automatically record the characteristics of the communication is also used to control the subsequent establishment of the communication. 2. A telephone system in which the number of the calling subscriber after identification is transmitted by communication to a point where it is put in reserve to prepare the operation of the recording equipment. equipment 3. In telephone system / handset equipment to be put into service when the line of the calling subscriber is in a particular situation which, due to the different kinds of maneuvers executed and to which it answers, causes the identification of the calling subscriber and its transmission by the communication at a stage in its establishment as determined by the particular maneuver performed. 4. A telephone system in which individual indications as part of a set of information relating to the communication (eg the individual digits of the subscriber's number) are provided to be transmitted by the communication to a point where the characteristics of the communication. communication are recorded under a special code using a constant number of pulses for each indication but much less than the maximum number of pulses of a single indication in order to reduce the transmission time. 5. A telephone system in which the caller and called party numbers are recorded in the office, <Desc / Clms Page number 151> requestor and transmitted in code by the communication to a point where these characteristics are collected. 6. A telephone system in which the characteristics of a call are transmitted by code and consist of a constant number of pulses for the individual indications making up the characteristics (for example the individual digits of a subscriber number. ) so that when transmission is established for a particular call a predetermined number of pulses must be received. 7. A telephone system. In which a translator-recorder associated with a requesting office is combined to record the number of the called subscriber and to control depending on the destination of the communication both the position of the connectors through which the communication must be established and the nature of the various operations constituting the communications to various types of recipient offices i. In a telephone system a combined translator-recorder to control the establishment of a call in which depending on how the translator-recorder is initially operated a progressively operated switching device is chosen to successively perform the various stages. required in the establishment of the communication according to the particular type of communication determined by this initial operation. 9. In a telephone system a combined translator-recorder to control the establishment of a call in which the digit (s) sent first and to which the translator-recorder answers first. <Desc / Clms Page number 152> determine whether the communication is for a subscriber in a remote area or in the same area as the calling subscriber and in the case of the remote area exert an action allowing a second translator-recorder to control the establishment of the communication and allowing the transmission of the characteristics of the calling subscriber number in order to carry out the automatic recording of the call. 10. A telephone system in which a device determining the type of communication is combined to be activated for communications from a certain office in order to register the destination of the communication and to control the channel in which the communication will be routed. to a remote office and further to determine the line or cable that will be used between these respective offices in order to adapt the transmission characteristics of the communication to the destination thereof. 11. A telephone system as claimed in claim 1, 4, 5 or 6 in which the equipment associated with an outgoing line from the area during call establishment is combined to activate a translator-recorder or converter. for establishing communication and recording equipment for automatic recording of communication characteristics. 12. A telephone system as claimed in claim 1, 4, 5, 6 or 11 in which all the distinctive digits to the called subscriber belonging to a zone other than that of the calling party are transmitted in code to a translator. recorder or converter in which they are stored. <Desc / Clms Page number 153> 13; A telephone system as claimed in claim 1, 4, 5, 6, 11 or 12 in which all the distinctive digits characterizing the area, the office and the number of the called subscriber are first recorded on a first translator. recorder and then transferred in code to a reserve device associated with the outgoing line and from this device are then transferred to another translator-recorder or converter. 14. A telephone system as claimed in claim 7, in which destinations of different types require different counting modes, the record of a call to a determined type of destination being combined to determine whether the count should or should not be done by automatic registration. 15. A telephone system as claimed in claim 7 or 14 in which destinations of different types require different qualities of cable with or without repeaters, the registration of a call of a specified type of destination being combined. , in order to determine the quality of the cable to be used and the use or not of repeaters. 16. A telephone system as claimed in claim 7, 14 or 15 in which different types of destination are required for communications to be routed through connectors actuated according to the digits of the called subscriber number only or additionally by connectors operated arbitrarily in order to / connect to a determined junction or position the recording of a communication for a determined destination being combined in order to determine the <Desc / Clms Page number 154> number if there is one and the operating mode of the latter type of connector to be used. 17. A telephone system as claimed in claim 7, 14, 15 or 16 in which the different types or not of destination require indication or registration of the number of the called subscriber, registration of the call. a communication to a particular destination being combined to determine whether or not the called subscriber's number should be transmitted. 18. A telephone system as claimed in claim 7,14, 15; 16 or 17 in which the different or non-types of destination require / the transmission of the digits of the called subscriber number in code, the registration of a communication to a determined destination being combined in order to determine whether the transmission of the number of the called subscriber should be effected in code or by a series of pulse trains. 19. A telephone system as claimed in claim 7, 14, 15, 16, 17 or 18 in which the various types of destination require the indication for the registration, or not, of the number of the calling subscriber. , the recording of a call to a determined destination being combined in order to determine whether or not the calling party's number should be traced. 20. A telephone system as claimed in claim 7, 14,15, 16,17, 18 or 19 in which a call can be counted either by the operation of an individual subscriber counter or by recording. - manual recording or by the automatic operation of a device printing tickets according to the destination of the communication. 21. A telephone system as claimed on sale <Desc / Clms Page number 155> cation 7, 14, 15, 16,17, 18, 19 'or 20 in which the junction lines between offices are of two quality and in which depending on the recipient office the high quality cable is used or the low cable quality is used with repeaters or even low quality cable is used without a repeater. 22. In a telephone system a translator-recorder as claimed in claim 8, to which. is associated a connector of the stepping type having several brushes actuated simultaneously and corresponding to pin fields to constitute several progressively actuated switching devices, an individual brush and its associated pin field (which may comprise part of a field, of pins) being for. combined to be chosen and / successively execute the various steps required for the establishment of the requested communication. 23. In a telephone system a translator-recorder as claimed in claim 8 or 22 in which a progressively operated switching device is used for offices requiring a certain number of control operations and other device. A gradually actuated switching device being used for offices requiring a further number of control operations. 24. In a telephone system a translator-recorder as claimed in claim 8, 22 or 23 wherein a progressively operated switching device is provided for establishing communications to offices requiring certain control operations. having no well-defined numerical relationship to the operations performed by the calling subscriber and in which another switching device operated <Desc / Clms Page number 156> is gradually being planned for the establishment of communications to offices requiring other control operations which also do not have a digital relationship with the operations performed by the calling subscriber. 25. In a telephone system a translator-recorder as claimed in claim 24 in which one or both progressively operated switching devices are combined to control in addition to control operations having no numerical relation to those performed. by the calling subscriber also operations having a direct digital relationship with those carried out by the calling subscriber. 26. In a telephone system a translator-recorder as claimed in claim 8, 22, 23, 24 or 25 wherein a progressively operated switching device is provided for establishing calls to offices which to be reached. require passage through the central office of a zone, and a further progressive switching device is provided for the establishment of communications which can be established independently of the central office 27. In a telephone system a registered translator. A device as claimed in claim 8, 22, 23, 24, 25 or 26 in which a gradually operated switching device is provided for the establishment of communications to subscribers connected to the. same office as that in which the translator-recorder is located. 28. In a telephone system a translator-recorder as claimed in claim 8, 22, 23, 24, 25, 26 or 27 in which a progressively operated switching device is provided for the establishment of communications to a central office. from the same area <Desc / Clms Page number 157> 29. In a telephone system a translator-recorder as claimed in claim 8, 22, 23, 24, 25, 26, 27 or 28 in which a progressively operated switching device is provided for establishing communications from. an office from an urban area in the area to offices in the sub-urban area in the same area. 30. In a telephone system a translator-recorder as claimed in claim 8, 22, 23, 24, 25, 26,27, 28 or 29 in which a progressively operated switching device is provided for the establishment. automatic transmission of communications to subscribers connected to offices outside the zone. 31. In a telephone system a translator-recorder as claimed in claim 8, 22, 23, 24, 25, 26, 27, 28, 29 or 30 in which a progressively operated switching device is provided for the establishment of communications to special operator positions such as long distance operator positions or for long distance communications or for information or complaints or any other similar position. 32. In a telephone system a translator-recorder as claimed in claim 8, 22, 23, 24; 25, 26, 27, 28, 29, 30 or 31 in which a switching device operated progressively is provided for the establishment of communications of which one must be certain of the duration. 33. In a telephone system a translator-recorder as claimed in claim 8, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, or 32 in which a gradually actuated switching device is planned for <Desc / Clms Page number 158> establishing a communication to a suitable registration position or operator position at the same time as giving the information of the line which sent the communication. 34. In a telephone system a translator-recorder as claimed in claim 33 in which a progressively operated switching device is combined to prevent when a subscriber line is found to be faulty or the calling subscriber has viewed the telephone. issue of figures. 35. In a telephone system a translator-recorder as claimed in claim 33 wherein a steplessly operated switching device is used for communications to a long distance operator or for long distance communications to operate an indicating system which signals the call. number of the calling subscriber visible in front of the operator. 36. In a telephone system a translator-recorder as claimed in claim 8, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, or 33 in which a gradually operated switching device is provided to a suitable registration position to indicate thereon to a particular line of a manual desk that or another line having no numerical determination is permanently shorted. 37. In a telephone system a translator-recorder as claimed in claim 8, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, or 36 wherein a switching device operated progressively is intended for establishing a communication to subscribers connected to manual or automatic offices <Desc / Clms Page number 159> in the immediate vicinity of the requesting office. 38 .. In a telephone system a translator-recorder as claimed in claim 9, wherein one or more preliminary digits indicating that the call is for a remote area is combined to prepare the translator-recorder to receive the others. digits sent first and indicating the requested area and then the desired office in the remote area. 39. In a telephone system a translator-recorder as claimed in claim 9 or 38 wherein in the absence of a preliminary digit the translator-recorder is combined to first receive the digits indicating the requested office. in the same zone as that of the calling subscriber. 40. In a telephone system a translator-recorder as claimed in claim 38 or 39 in which a two-way connector is provided to release answering the digits transmitted first and which / if the first digit transmitted indicates that the communication is for a remote zone while it is combined to answer the next two digits which indicate the requested zone whereas if the communication is for a subscriber of the same zone this connector responds to the first two digits sent to indicate the office of the called party being part of the same zone as the calling party. 41. In a telephone system a translator-recorder as claimed in claim 9, 38, 39 or 40 in which the digits transmitted first and to which =; the translator-recorder answers first in order to determine the zone or the office of the calling subscriber, also select a switching device <Desc / Clms Page number 160> operated progressively to control the establishment of communication according to the type of communication to be established. 42. A telephone system as claimed in claim 10 in which each group of inter-office lines or cables have a digital indication corresponding to their transmission characteristics and are combined to be put into service when a control maneuver is performed and corresponds to the appropriate digital indication and in which the communication determining device is combined to exert an appropriate digital maneuver according to the destination of the communication in order to determine the cable or cables having the appropriate transmission characteristics to be able to be used . 43. A telephone system as claimed in claim 10, or 42 in which for communications to a remote area a trunk line of suitable quality is selected at the requesting office and at the central office of the area by pre-selection operations. mines independent of the outgoing junction or long-distance lines. 44. A telephone system as claimed in claim 3 in which one of the various commands in question corresponds to the automatic establishment of a communication to a subscriber not belonging to the zone of the calling subscriber and is used to allow the recording of communication characteristics for pricing purposes. 45. A telephone system as claimed in claim 3 or 44 in which one of the various commands in question corresponds to the automatic establishment. <Desc / Clms Page number 161> tick of a communication to a subscriber forming part of the calling subscriber's zone and serves to allow the recording of the characteristics of the communication for the purpose of pricing. 46. A telephone system as claimed in claim 3, 44 or 45 in which one of the various commands referred to corresponds to the establishment of a communication to a manual operator position in order to enable the operator. operator to establish communication and is used to make known the number of the calling subscriber to the operator for the purpose of pricing 47. A telephone system as claimed in claim 3, 44, 45 or 46 in which one of the different commands is carried out by a time device which begins to function when a certain pre-determined time has elapsed after the translator-recorder has reached a certain stage. 48. A telephone system as claimed in claim 47 in which the timing device exerts a control operation after a certain predetermined time has elapsed / from the moment when the translator-recorder has been put into service provided that no other control has been exercised on it. 49. A telephone system as claimed in claim 47 or 48 in which the time device exercises control after a certain time determined in advance and counted from the time when the last control was exercised on the translator-recorder. . 50. A system, telephone as claimed, in claim 47, 48 or 49 in which the device in time controls the translator-recorder to direct the communication to an operator position to transmit the information. <Desc / Clms Page number 162> tion to this position concerning the number of the calling subscriber as well as any commands which could have been exercised on the control device of the recorder. 51. In a telephone system a translator-recorder as claimed in claim 8 wherein the rate to be applied to a call is determined according to the area and office of the called subscriber. 52. In a telephone system a registered translator; Treater as claimed in claim 51 wherein a progressively actuated switching device selected for communications requiring ticket printing is combined to transmit the tariff to be applied to the communication at an appropriate time, (this 53. A telephone system in which the number of the calling subscriber is identified and stored at the calling office and then transmitted to a registration position. 54. A telephone system as described and shown in the attached plans. 55. In a telephone system, a translator-recorder activated at the start of a call as described herein and shown in the accompanying drawings, Figures 7 - 26. 56. In a telephone system a storage device associated with an outgoing trunk line as described herein and shown in the accompanying drawings in Figures 32 - 41, 57. In a telephone system a combined translator-recorder to be used for the establishment of inter-zone communications as described in the present and shown in the accompanying drawings Figures 42 - 47.