DE2062315C - Circuit arrangement for centrally controlled telecommunications switching systems, in particular telephone switching systems, with switching networks and devices for their functional testing - Google Patents

Description

There are already numerous arrangements for radio

tion test known. The German interpretation document

40 1 243 733 describes the testing of using a central control device through-connected Koppelfe'Hverbindungen also under use

Modern centrally controlled telephone exchange this central control device. This provides itself systems work, among other things, with a central fixed, whether with a previously connected one Allocation memory in which the status (free or 45 coupling connection, which is used to establish the connection busy) all parts of a common multi-level between a calling and a called sub-switching network, such as B. the switching matrix inputs, subscribers via the switching matrix in question through switching matrix outputs, of the intermediate lines and / or is switched and in the following also as »Nutzder coupling switching connection provided at coupling points «, a wire break or medium, is recorded. As a result, there is wire contact in the coupling 50 and there is a dependency field and in those connected to the coupling network inputs and outputs from the test result Establishments, e.g. B. registers, connection to further connection through-connection connection sets, cable sets, etc., which otherwise (assignment of the selected switching matrix output) required test and occupancy circuits free.

(c-cores) unnecessary. 55 Furthermore, numerous arrangements are known which

Such telephone exchanges have in a telephone exchange in addition to all central or decentralized control devices for the speech channel connection and release Provide the necessary logic for route search and selection at connection establishment test facilities, central point in a central control unit. This which for the production of test connections takes 60 serve for connection through-connection on the one hand, that is from only produced on a trial basis the status (free or occupied) of the connections in question, which are only used for functional testing Coming parts of the switching matrix from the range of dialers or coupling memory stored in them and on the other hand from received multiples serve and are then triggered again. Election information instructions about a service For the invention, the general object is

Binding production to be taken into account 6s taking into account the least possible effort bundles of lungs. The central control unit takes a programmed, centrally controlled telecommunication logic Linking all of this information and an intermediary system of the type outlined in the introduction Selection of a clearly defined switch-through set of available switchable connection

to subject vege to a functional check. The use of known arrangements for solving this task can lead to unsatisfactory results. If that is the central control unit - as jurch German Auslegeschrift 1243 733 known - "ven perform the functional check, this would result in the same lu an unfavorable impact. On the other hand, a test device that freely produces test connections would have to work independently with the occupancy memory in addition to the central control unit, i.e. query data and, in particular, change its memory status, which, however, would lead to a narrowing of its functions, which would severely impair the dominant freedom of movement of the central control unit. In particular, this would jeopardize the correspondence between the memory content of the occupancy memory and the state of all parts of the switching network, which is essential for the function and which is difficult to achieve in any case with the required operational reliability. It therefore ordered the task of creating an arrangement for the functional test of the switchable connection paths, while optimally adapting to the concept of programmed, centrally controlled telephone switching systems and minimal additional load on existing facilities. The invention achieves these objects by an arrangement with the following features:

a) A test facility limited to the exercise of test functions is at an input and / or output of the switching matrix connected;

b) a central control unit provides after switching through a useful connection between a Coupling matrix input and a coupling matrix output automatically one to carry out the test functions Serving auxiliary connection between on the one hand the test device and on the other hand the same switching matrix input or output;

c) the central control unit distinguishes between a majority and a minority Useful connections of a first or second category accordingly and only after one Fraction of the connections in the first category in a fixed counting rhythm, one each Auxiliary connection, on the other hand for connections of the second category after each useful connection an auxiliary connection each.

According to the invention, alsu is used between the A clear distinction is made between the test functions and the connection through-connection functions. The latter are from Central control unit perceived. It can be used to switch through auxiliary connections Control programs operate like for switching through user connections. The instructions to the central control unit (Addresses of the relevant switching matrix inputs and outputs) for establishing an auxiliary connection partially determine (address of the test facility) and are partially identical to the data that from the central control unit for the connection of the previous and now to be checked user connection have been determined. From the share of tasks for the central control unit the function monitoring of the switchable connection paths does not result in an expansion of the Overall control program.

For the subdivision of the user connections into a majority corresponding to a first category and a minority of connections corresponding to a second category consists of various Mög-Henkelte. The totality of the connections to be switched through can be divided into a first category of domestic connections and a two category of international calls are further subdivided into Telephone connections and connections to

ίο data transfer via. Telephone lines, furthermore in connections for normal participants and connection fertilize for participants with special privileges (e.g. police, fire brigade, doctors, etc.), also in connections to be switched through during normal operation and connections to be switched through in the event of a disaster (severe traffic restriction), furthermore in Connections to be switched through during the day and connections to be switched through at night. The domestic ones mentioned or AuslamKverbindunu.cn can also generally be referred to as low-tariff or high-tariff connections.

With the takeover of the switching functions by the central control unit, there is a certain amount of Additional burden associated with the same. The division of the connections into two categories and the restriction the production of auxiliary connections on the one hand to a fraction of those connections, which make up the majority of the totality of all connections to be switched through (first category), and on the other hand, on those connections that are only a small part of this total make up (second category), but has the effect that the additional burden mentioned is hardly significant. The division of the connections into two categories assumes that the connections of the first category - that is the main part of the totality of the connections - the central control unit according to the mentioned counting rhythm as an occasion for only sporadically triggered test processes in the The purpose of a routine check is used, but that those exceptional cases, which are an exemplary Require individual verification of each connection through-connection, grouped into a second category are. In the case of mixed domestic and international connections, experience has shown that the latter quantitative and qualitative such exceptional cases. With mixed telephone connections and connections for data transmission over telephone lines, the latter are also numerically used such exceptional cases. The same applies to the example of connections on the one hand for normal subscribers and on the other hand for participants with special privileges. In the example mentioned of the Connections to be switched through during normal operation and those to be looked through during disaster operations Connections again represent the latter the notification cases. This can be assumed that the central signal box at Norsualbelricb is busy, but not in the case of disaster relief.

The same applies to the example of 1 'nee and the connections to be sounded through at night.

In all of these fills listed as examples

the distinction between the totality of verbs In normal cases and exceptional cases, the latter are connections that are in In contrast to the sporadic routine flushing, they require an exemplary individual check. This one Requirement is the invention in the already eye-

be wise just. For this, let ζ. B. linked to the differentiation of the totality of the connections to be switched through into a first category of domestic connections and a second category of international connections. The domestic connections are to be regarded as low-tariff connections and the international connections as high-tariff connections. This distinction between low-tariff connections and high-tariff connections practically prevents a subscriber from missing out on unjustified expenses, because it can be assumed that a subscriber who has received an unusable connection will release it again within a period of time that would be the case with a low-tariff connection corresponds to a single charge unit; therefore, and also because of the rarity of such cases, there is practically no unjustified cost burden for the correspondingly affected participants. ^ao

Calculations indicate that assuming a fraction of a tenth of the useful connections belonging to the first category (this fraction is therefore used for a subsequent functional test subjected) to a negligible additional burden for the central control unit shows that, on the other hand, an existing error no later than 1 hour after its occurrence in the Usually, however, it is found and rendered ineffective in a fraction of that time.

The invention creates, with optimal adaptation to the principle, programmed, centrally controlled telecommunications switching systems the possibility of the existing facilities and programs for the functional monitoring of the switchable connection paths to take advantage of. The test device, which is limited to the test functions, can be used as a Measuring circuit can be designed very simply because it essentially only has the task of determining of wire breaks and wire contact and, in the event of a fault, that of the fault signaling.

For fault signaling and troubleshooting offers a centrally controlled telecommunications switching system favorable conditions with occupancy memory. The Test device to the central control unit and informs it after connection that there is a fault. The central control unit determines the course of the auxiliary connection from a central connection memory and from this the address of one of the two switching matrix connections (switching matrix input or switching matrix output), between which the interference-prone coupling connection runs. The central control unit can e.g. B. print out the data of this faulty coupling connection, but in the connection memory leave stored undeleted. Those memory elements then also remain in the occupancy memory marked as busy, those corresponding to the noisy coupling connection Share in the coupling matrix.

In the drawings Fi g. 1 to 5 is a centrally controlled telephone exchange Embodiment of the invention is shown only in components that contribute significantly to its understanding. '

F i g. 1 and 2 together show an overview for a telephone call dispatching diagram to which the invention is based is anpewcndct; in

F i g. 3 and 4 show parts of this switching system in more detail;

Fig. 5 shows details of an inventive Test device, which is also referred to as "test set" in the following.

First, however, with reference to FIG. 1 and 2 give a general overview.

Several groups AF1 to AFn of individual devices are indicated. These groups are hereinafter referred to as work areas. The fields of work AF1 to AFn are part of a larger switching system. Each of these is individually assigned an intermediate storage and encoding device (buffer memory) ASi to ASn, hereinafter referred to as the work field control unit. The work field control units ASl to ASn of the switching system are individually connected to two central control units ZSi and ZSl via two individually assigned lines Ul to Un and two common information collection transfer memories SSi, SS2, which are hereinafter referred to as "collective storage". The arrangement of two collective storage facilities and two central control units together with two individual lines Ul to Un is used in a known manner both to increase the operational safety of the entire switching system with regard to the possibility of a malfunction or operational interruption of a central control unit and to monitor errors by comparing two of two different central control units independently mutually developed information. Since this is not essential for understanding the invention, the following is mainly only of a single central control unit ZSl, a single collective storage 5Sl and each a single individual line, e.g. B. Ui, U2 etc., the speech.

The fields of work each consist of a large number of different types of individual devices. These include, among other things, in the switching stages A and B of the three-stage switching network, the individual coordinate switching multipliers. to understand joined coupling groups ATGl to KGn. Each coupling group, e.g. KGi, has its own setting device, e.g. B. STl assigned, which executes the setting commands received from the Arbeiioieldsteuerwerk. In each case a coupling group with an associated setting device thus forms an individual device. Individual devices are also the totality of the switching matrices of the switching stage C with its setting device STc. It is also possible to combine these switching matrices in a work field in several individual devices with their own setting devices. Individual devices are also connection sets, e.g. B. VSi and other connections to be switched through within the switching system formed from the work fields Λ Fl to AFn, also carrier frequency cable sets RSl, RS2 to RSn, the connecting lines (local or long-distance lines) to switching systems at other locations for incoming and / or outgoing Connections are assigned individually. These individual devices also include dialing receivers, for example WSL and others, with which telephone subscriber stations are temporarily connected for the duration of the recording of the dialing information provided by the subscribers. Furthermore, test sets PS explained in detail below for checking the functionality of the

Switched coupling network connections to the indivi- (ZLC) permanently connected coupling multiple outputs zuduell devices. are accessible.

In addition, not shown subscriber indivi- For all to be switched through the switching matrix

Dual subscriber connection circuits individually or connections are arranged by the central control unit ZS1, which is also combined as paths in groups and serves as individual devices 5 search device. all necessary switching data on hand

All of these individual devices of a work field, from eg AF1 previously received via a work field control unit, are determined over them common circuits election information. A central piece of information. B. Uli, with the relevant Arbeitsfeldsteuer- tion memory ZJS contains this part, which as a work, z. B. ASl connected. Each individual device io occupancy memory is used and in Fig. 2 with ZB contains connection means for connection to which is shown. The central Belcgungspeicher ZB entStromkreisen, which can be controlled by the work field control unit, holds a large number of storage elements, e.g. B. are. For this purpose, if the requirement of an anzbl, zbl , etc., each of which corresponds to one of the parts of the circuit in the individual device, is further coupled matrix. These parts are e.g. B. the manner described below in more detail 15 intermediate lines and connections (on and off activation incentive from this individual device gears) of the switching network.

handed over to the work field control unit, which here The telephone exchange system described here

is identified and for the delivery of a connection position thus all leads to the speech path through switching commands to the relevant individual device. Each work area control unit, for example ASl, is therefore with 20 search and selection at a central point in the central of the individual devices in its group - its control unit ZS 1. In order to prepare the connection work area - the central control unit, for example Uli, connected via those common circuits, connection through-connections, to which the individual entities each search for a route. It takes this rate that can be switched on individually. on the one hand, the status (vacant or occupied) of to

The switching matrices of several working fields at one location in question form a single common coupling part of the switching matrix from the occupancy memory field, which is not causally related to reasons related to the Gnip ZB and, on the other hand, via one of the working fields of the switching matrix - Control units received selection information that are related (e.g. reliability, expansion instructions about for a connection establishment possibilities and questions of the traffic line bundles to be considered. The center load), into several areas of responsibility of several central control units ZSl takes a logical connection working field control units divided is. The coupling field formed from all of these details and a selection of a single switching matrix in the switching stages A , B and C clearly defined through-switching path via the working fields AF1 to AFI1. The field denoting this through-connection is made up of switching matrices in three settings via intermediate data from the central control unit on further lines which are connected to one another. to the inputs of the first switching stage devices, for example STl, STl and STc, of the coupling (Fig. 1 : A) are subscriber lines, connection fields from, which are slavishly dependent on the inputs and all inputs and outputs to provide all in the train this through-connection path He connection and connection monitoring 40 controlling coupling relays of the switching system to control the switching elements necessary for each connection, through-connection of the through-connection path previously determined by the central control unit, for example connection sets VS1, dial receiver WS1. In connection with carrier frequency line sets RS 1 to RSn and the like. Outputs of the switching matrix ZSl each have the memory status of the occupancy of the first to the penultimate switching stage, the one memory ZB to the effect that the downstream switching stage that is newly assigned as a result of the zein to the inputs of the switching matrices of the new connection through-connection are connected, are parts of the switching equipment corresponding in each subsequent coupling stage pair storage elements, eg zbl.zbl and the like., the evidence can be interconnected. Show such a coupling set state of these parts. Corresponding field already shows and describes the German patent. The same applies to the release of connections, writing 1 235 379. The special feature of a Das Zentralsteuenverk ensures that the special design of such a coupling field always includes the memory content of the allocation memory that the state (free or occupied) of all parts of the coupling outputs of each of the switching matrices is kept in agreement over a maximum of field by a switching matrix input,
a single connection path can be reached. DA 55, the central control unit ZS 1 also listed in through is at a route search from a coupling one as a central compound store ZV bcfeldeingang forth by selecting one of these outputs recorded portion of the central information memory of the durchzuschaltende via the switching path for ZJS the course of each through-connected Verdie Desired connection already clearly tied. The central connection memory ZV points out. The switching matrix is, from its inputs to 60 for this purpose, a larger number of memory lines, e.g. B. seen the outputs of its coupler, purely fan- zvl, zvl , etc., on, each of which is structured as a memory. In spite of this, however, two coupling devices of the data indicating the course of a switched-through field inputs can be used alternatively via different paths with connection, because from the two memory lines of the central connection coupling field inputs there is always several common 65 stored ZV recorded in each case which switching matrix output or multiple switching network connections with which other coupling stage in different working fields is connected via which intermediate lines and via which intermediate lines each.

9 10

Both the method of path search using a loading switch relay contacts Mo j and

Leeunesspeichers is still on the following literature windings E of the relay of the setting device ST I

are pointed out: activated. The ones with contacts s and

Windings E connected to the common current-5 circuits t / 11 are multi-core. Relaiskon-German patent specification I 190 518, takte s and relay windings £ of the setting facility German AusJegeschrift 1251816, tungSTl in contrast to the simplified representation

,,. . . . ,,. -, ατ-ηη position each provided in several. For a Überdeutsche Auslegeschrift 1 252 270, ^ ^ J _{information on and from} Arbeitsfelddeutsche Auslegeschrift 1 252 754, io control unit, its switching elements and the individual devices assigned to German Auslegeschrift 1 253 769 are under avoidance

of line influences in direct criteria German Interpretation document I 254 196, exchange. Each of the above mentioned communal German Interpretation document 1 254 703, all circuits, e.g. i / 11, in-

,. »Ι u τ. ι ~> * λ -i (\ a ¹ S formation may be in the form of several

German Auslegeschnft 1 254 704, ^ ^^^ _{criteria of m dere} " _Veins . _the

German Auslegeschrift 1 256 267, shown switching means are in the present case

German Patent 1,275,149, electromagnetic relays or contacts from them.

', “However, it may be more advantageous to do this

German Offenlegungsschnft 1 487 929. _{ao other z Q electronic} switching means to be used.

As already described, each serve one

As stated, the fields of work, field of work and the individual ζ assigned to it. B. AFX, three switching stages, whose coupling devices are common circuits the mutual multiple encryption in the manner via intermediate lines of information transfer by direct criteria collars, that a respective switching matrix output in _a5 exchange. For information transfer between the first to the penultimate switching stage A and B , one each of the collective memory and the work field control switching matrix input in the second to the last plants are used, however, these individually assigned switching stages B and C are individually permanently assigned. The lines Ul to Un, hereinafter referred to as "individual outputs of the switching matrices of the switching stage C virtual line". Each of these lines, some 30 in the work fields AF 1 to AFn, for example U 1, is also unconnected in the collective storage device SS 1, but the main part is via from the relevant work field control unit, for example AS1. Intermediate lines leading from work area to work area - that is, at both ends, each with a transmit and a ZLC individually interconnected in pairs. Receiving circuit, e.g. B. TjFIGA and El / Sl / GA 1.

The two central units, which are arranged adjacent to one another, are each equipped with a program storage device for the individual line control units ZS 1 and ZS1. Each of these corpses is assigned PS 1 and PS 2 . From the programming is - like Fig. 3 and 4 show - the two-wire storage unit is removed by the central control unit, after executed. A hybrid circuit, for example GA, GAl, is used as the transmitting and receiving circuit which program (for example route search) is connected to one output from a work field control unit, via the transmitting part, e.g. B. F, 51, and a receiving part, e.g. B. the associated collective storage SSl in the central 40 T, El. Each hybrid circuit is to be transferred to the transmission control unit; the technical adaptation to the line ir; well-known th is. With a corresponding replica

In Fig. 3 are further details of one in FIG. 1 equips.

shown work field control unit ASl shown. In preparation for a description of the func-

On the one hand, the work area control unit stands above 45. The work area control units are initially assigned to their individual devices in common - a few definitions of terms are given. As from the same circuits, e.g. Uli, with the individual explanations given above, devices such. B. the setting device ST1 is the head, information is sent both from the individual group KG 1, and on the other hand via an individual device to the central control unit as well as dual line E / 1 with the one shown in FIG. 2, the 50 from the central control unit the collective memory assigned to the individual devices central control unit ZSl. In any case, apart from the collective SSl are used in connection. memory 551 the work field control units here ah

The in Fig. 3 work field control unit shown can have intermediate links. The transfer of information is requested before the individual members, for example from the input device to the collective memory SS 1 setting device 5Γ1. Help 55 is always referred to as "reading" in the following. That of the identifier Jd is the work field control unit in reverse information transfer from the collection of the situation, among several simultaneously present accumulators to an individual device is immei switching incentives, which via request contacts, z. B. referred to as "writing". Accordingly werdei ah, be switched to select one and "within the field controller, the criteria Read" unc a corresponding thereto connect command to the 60 "letter" constituted. The informa switch relays to be transmitted from the central control unit zi the relevant connection incentive to individual devices, z. B. Mon to submit. In the following, the requirements are only given as commands and circuits are drawn from each individual device.

zein introduced to the Arbeitsfeldsteuerwerk. The criterion »reading« is used in the labor tax

Connection relay, e.g. B. Mo, the individual devices 65 work always formed when, due to a request, are in a request about all individual devices on the part of an individual device, z. B. voi stretching control matrix. the setting device 571 via the request

With the help of contacts mo of the relevant contact ah, this with the Arbeitsfeldsteuerwefl

11 12

was connected (relay Mo) and information about a coded address transmitted to it

to whose information memory JS has passed that of a work field control unit a corresponding

is now to be transferred to the collective storage SS I. Connection criterion to the respective relevant

Furthermore, the creation of the criterion »reading« precedes the work area control unit and its

from the fact that all switching processes of the preceding radio connection 5 serving coincidence gates, e.g. G25

processes have ended. If, on the other hand, there is no der- and G 26, gives up. - The work area control unit after

similar requirement on the part of an individual Ge F i g. 3 and the collective storage according to FIG. 4 become

advises, the crime is then described together in the work area control unit,

The criterion of "writing" is that the willingness of the user lies in a work field control unit

Work field control unit expresses, Inio "read" before, so is' - as already described

record information that has been stored in the collective memory - a corresponding request identifier

SS 1 may be available and sent to this work via the assigned individual line U 1

field control unit are to be transmitted. transferred to the collective memory. Here it comes to

In addition, the case can also arise that its IDENTIFIER / ίΠ, which on the basis of this neither carries out a request on the part of an individual identification process and which is available to the Ar device, nor that the work field control unit is ready to encode information in the corresponding address. This better gives form. This address is both an operating state when a work field list memory L via its input device El. Control unit with the processing of information as well as for connection control / 1 (/ is not finished yet. In this case the work ao is carried out, which in turn does not use the relevant field control unit for any information exchange gate circuits, e.g. G25 and G26 acquisition memory ready. In Arbeitsfeldsteuer- circuit of the factory to the working field controller in question is the criterion "blocking" formed. corresponding individual line U 1 herbei-

The described criteria »reading«, »writing« lead. Then the sequence control AB 1 des and "blocking" are formed in the sequence control AB as collective memory via the gates G37, G 30 and the work area control unit; the criterion G 26 a call indicator for the activated Ar- "read" is implemented via the output L of the sequence control field control unit, which is implemented in the switching device P tion AB and the criterion "write" is implemented via (FIG. 3) and the output as an acknowledgment character S issued by the sequence control. to input Q of the sequence control AB of the Ar-The criterion "blocking" consists in the fact that the 30 field control unit is transmitted,
both criteria "reading" and "writing" at the same time The information is provided by the work area control unit. However, it is also possible to transfer the "blocking" criterion to the collective memory in several successive criteria due to the absence of the two sections. Each piece of information to identify criteria "reading" and "writing" is introduced separately by special criteria or a special signal circuit 35 and confirmed for this purpose. Provide this and the section-by-section information. This education transfer in the work area control unit is explained in more detail below,
The th criteria are sent to a switching device P. Each piece of information is transferred in several pieces of information. If the control unit is located in the work area, the control unit is divided. All information is binary coded, so the switching device P outputs a request identifier via the transmission field common to the individual devices of a worker and this with its work field U 1 to the collective memory. If, on the other hand, the control unit connecting circuits, e.g. U 11, in the work area control unit the criterion »write« are all switching criteria to the central or the criterion »blocking«, then the control unit gives information to be transmitted from the switching device P corresponding other switching individual device at the same time to the work identifier via line U 1 to the collective storage 45 field control unit. Depending on the size of this inch, only if it has previously been deformed, it is subdivided in the work field control unit into a maximum of speaking requirement identifier for the work time four pieces of information. Has submitted in the information field control unit. (Details about this memory JS is provided below for each of four pieces of information!) A part of this memory JS is provided: / 51,

The collective memory SS1 (FIG. 2) is in FIG. 4 50 JS2, JS3 and / 54. Likewise in the instruction memory BS

reproduced in more detail. The one part of the for each of four pieces of information

Work field control units individually assigned Lei storage system BS provided: B51, B52, BS3 and BS4

t / l to Un show in the collective memory 551 The different designations of information

(F i g. 4) for each work field a transmit and receive memory / 5 and command memory BS means that ei

catch circuit on. In addition, in one case the collective 55 points itself around for the central control unit

save one connection configurable information per work area and, in the other case, uir

tion, which in the exemplary embodiment is made up of two "writable" commands. These terms became

Coincidence gate ^ z. B. G25 and G26 for the Ar- already defined,

beitsfeldsteuerwerk ASl exists. Each consisting of several pieces of information »

Furthermore, the identifier Jd 1 in the collective 60 information and each of several sub-commands be referenced

memory that is used to receive the command is for transmission on the via

The request transmission line U 1 issued by the work area control units by specifying the length

label and to select only one address adds an address that specifies the individual

requesting work field control unit and designated by device.

the respective address 65 for each identification process. The length specification is ge in the following way

of the relevant work area control unit in encoding gains: The form the information memory JS

ter form. Furthermore, the connection partial memories / 51 to / 54 are used to accommodate j

control Ad mentioned in the collective memory based on a piece of information. The scope of an information

13 14

is determined by the number of pieces of information. Information created in the course of the course is only then passed on

This number is the length specification. It will become possible if the other em-

in the same part of the information memory 75, a corresponding character is set

placed. This is easily possible by creating the number of transmissions. This sign is from

when storing information, part 5 used a distributor V with the aid of its switching arm ν

memory is determined in a known manner. The successive to the various gates Gl to

Length specification is switched on as a code character by the common G12, so that the individual

samen part of the information memory JS under an- Bytes come for transmission, namely first the

which is transferred to distributor V and stored here length specification, then the address of the relevant

_{cnert l0} individual device and then the information or

Before the transmission of information or commands, the command. The gate circuits G4 shown via the common circuits U 11 are transmitted as gate circuits for each byte after the length information is first to G8. It states comprehensive code characters, the code elements (bits) of which have the information or the command, which is subsequently transmitted and not shown in detail, to a soft quantitative extent. Comes whose 15 are transmitted to each other to understand.
Total reverberation instead of four pieces of information or the aforementioned distributor V is expressed in less by the down partial commands, so the running control AB is controlled. Since the work area information or command transmission on the dement control unit was requested by one of the individual devices correspondingly fewer pieces of information or pieces of information, so are limited as soon as the information is missing. From the previous length specification ao and the length specification in the information memory JS , the respective recipient knows, namely the respective and the address in the identifier Jd transferable work field control unit or the collective memory, and provided that the length specification is available when the respective information or commands are transmitted Distributor V is transferred and when this transfer will be finished. ner takes his rest position, corresponding crime

In addition, each such transmission goes in a manner not described in detail

the address specified above. from distributor V and from identifier Jd to the

It is always specified beforehand from which sequential control system AB is transmitted that initiates this.

information comes to the individual device or, for sen, the »read« criterion is sent to the switchgear

which individual device a command is intended for. tion P to be delivered. As described, this gives her-

It has already been stated that each piece of information sends a request identifier to the collector. is divided into several pieces of information. The memory (Fig. 4). The collective memory takes up the largest amount of information and is determined by four parts - as also already described - identifying information. The fication of the partial information and a connection of the relevant on the transmission line V1 of the second type of work field control unit. Then sends the indirectly preceding address indication may to-35 sequencer AB 1 of the collecting reservoir via the additionally the extent of one or two Teilinforma- gate G 37, G30, G26 and the line Vl occupy a Abtionen. The address information preface identifier for the work field control unit, the length information given here, is received by the switching device P in the present case and, as a guiding example, a maximum of the scope of a partial acknowledgment character for the sequence control AB of the information. 40 beitsfeldsteuerwerkes is passed on and over

The length specification, the address specification and whose input Q arrives in this. The drain maximum of four pieces of information or commands advertising control decreases it, with the aid of Verteiden in equal groups of binary Kodeele- toddlers V the emission sequentially specifying cached in Arbcitsfeldsteuerwerk the length Menten, the address of the relevant individual and recoded and from and to transferred to this. 45 device and the maximum of four pieces of information. Each code element comprises one bit. A certain existing piece of information.

Number of bits, ζ. B. eight, form a group of Simultaneously with these operations of the Anschalbinary code elements. Such a group is called data (gates G25 and G26) and the information, as opposed to "bit", is called "byte". The retrieval (acknowledgment Q) has the collective memory the length specification thus comprises one byte, the address of the imminent recording of information prepared, the relevant individual device two bytes and the information or the command issued by the identifier 7dl in binary form each comprise a maximum address was - controlled by the times four bytes. The first byte containing the LAN flow control OJ - on the Eingabeeinrichgenangabe, the second and the third byte, contained tung EL of the list memory L in the left part lend the address indication, and - written to a first free storage row in the present 55th In the exemplary embodiment a maximum of four additional bytes, this address is therefore the address containing information or a command, forming the relevant work field control unit, which does not share a common "word". The transmission of a word via the individual line i / l may be confused with the address of the respective individual device.

controlled with the help of auxiliary criteria. This auxiliary 60 If the collective memory now receives the length criteria are »read« (L), »write« (S), »lock information, address of the individual device and lungAfL + .S ¹ ) - as already described - information Word, this is passed through and "Acknowledgment" (Q). For the transmission of such the G25 and G29 and the one word, the individual bytes in the information storage device EL are stored in the relevant, correspondingly rather 7th V, each one input of the 65 prepared memory line of the list memory L. - Gates G 4, G 5 , G 6. G 7 and G 8 offered. The process de ·. A word is transmitted to Gatler G4 bis (78 here symbolically for exclusion, described in further details,
pressure, that the respectively named, to one of their input The collective storage receives so first the

15 "16

the address of the relevant work area control unit transmitted from the work area control unit via the line Ul. As soon as he has received it, the length specification, the address of the respective menu, he acknowledges receipt; in the process- individual device and the information. This control AB receives an acknowledgment via its input Q. The content of the list memory L line becomes a message character. Then the Ablaufsteue- gibi 5 by line successively one after the central control / 4B factory a Fort switching pulse to the distributor V "read".

This switches its switching ν by one step. Thus the gate G 4 for the through control unit commands together with the addresses would be blocked for the length specification and the gate G 1 of the work field control units and together to more for the transmission of the address from the identifier Jd io reren collectively transferred to the collective memory, to the code converter CU 1 permeable controlled. However, since these things are not of decisive importance for the understanding of the interim, the collective memory is not of decisive importance in the individual device, no further details of the address of the individual device are prepared for the individual device. wrote.

This address is now transmitted by the work field control unit 15. 1 shown switching network KF (coupling switching means already mentioned memory cell written. That of the working fields AFl to AFn) reproduced. Collective memory in turn acknowledges receipt, of the in F i g. 1 shown line sets RS 1 and whereby the sequence control AB of the work area RS 2 and the test set PS are further details of the control unit via its input Q again a Quit- so shown in FIG. Receives RSL and tungszeichen in the wiring harnesses. Interlocking transformers are provided that

In the same way, after the address of the two-wire connection through-connection in the individual device in the form of additional bytes, the switching network KF can be closed. However, this is not binding for partial information from the work field control unit to the invention, but merely serves to transfer collective memory. The length specification 25 the possibility of a simpler representation. was previously saved in distributor V. However, the invention can also be used in switching systems with a four-way end of information transmission - even especially in the work area control unit. suitable for wired connection through-connection.
Since the length information is transferred to the collective storage unit, the RS1 and RS2 wiring harnesses are also included

gene was (is taken herein except in the list memory 30 also L test resistors R 1 and R 1 or R 3 and R 4 vorvon the sequence control OJ), as seen, each having a galvanic connection, the same applies also for the Sammc'.spcichcr. After between the Spiechadern al, b \, al and bl one-reception of the last partial information of a word on the one hand and earth potential on the other hand. The collective memory gives an acknowledgment for the last time. Resistance values of these test resistors and the sequence control AB of the work field control unit 35 are identical to one another. Their amount is in each case = 2R.
back. Are the two wiring harnesses RSl and RS 2 over

After the collective memory interconnects the information 'the coupling network, the length and address of the relevant known, two speech wires al and al of an individual device are received and, together with bl and bl on the other hand, individually galvanically connected to the address of the relevant work area control unit 40. The resistance value stored between one line of his list memory L see on the one hand the interconnected one, he switches himself off from the individual line speech cores a 1 and al and on the other hand earth potential / 11 and thus from the work field control unit ASl tial is accordingly R. The same applies to the off again . He is available to receive further Införma speech lines b 1 and b 2.

ready. It switches itself on in the manner already described. Various error cases are now conceivable with regard to this manner individually one after the other to the various switching network through-connections. Before each work field control unit is addressed and received in detail, it should be noted, one after the other, how the central interlocking controls the connection of devices via the various work fields of the test set PS to the connections to be tested control units information with length information and 50 .

Address of the respective individual device and the method of connection establishment using

saves them in the lines of the list memory. Allocation memory was already discussed above together with the respective address of the described. The central controlling function is exercised here Work area control unit one after the other. at the central control unit. In the preparation of

Either when the list memory L of the collective 55 of remote connections is, among other things, the memory is full or in each case at certain fixed intervals for each connection according to the respective set time intervals, the central control distance switches itself to the corresponding fee tariff, works ZS1 to the collective memory 551 on. For this purpose, as is known, the call charges are determined according to the line λ: (Fig. 4) a corresponding different charge tariffs. Each Gedes requirement and connection criterion on the 60 charge declaration is assigned a correspondingly sized impulse collective memory. This criterion is assigned both clock, so that for each connection entzu the gate circuits G 34 and G 35 as well as the respective distance charges to the sequence control AB 1. On in detail not impulses accumulate at time intervals that are transferred according to the manner shown 'now the collective memory respective distance are measured.
551 with its flow control OJ and sides 65 It may happen that a participant ner output device AL selected in a course of the overall a particular link and get entire contents of his list memory has for Central that this compound but due to some tax work that is, in each case in association with one another, errors in the switching network cannot be used. The part-

17 18

This will take place every time within a period of time from the low-tariff connections

determine it yourself for about 10 seconds. He then triggers a test signal. After producing a highly

select the faulty connection and dial again. tariff connection is the test rate PS

The totality of all possible switchable each time to one of the two relevant coupling connections a distinction is now made between low-tariff 5 field connections of this high-tariff connection and high-tariff connections. When switched.

Low-tariff connections like the charges. However, it is also possible to have the connection pulses with a time interval of more than 10 seconds connections in other ways in two classes. To be subdivided for the high-tariff connections. This has already been pointed out by mentioning the charge impulses at a time interval of 10 different examples. Have less than 10 seconds when connected. Due to the corresponding one class, the central control unit carries out the corresponding programming, a count is made for the central control unit in the manner described and the unit ZS1 is determined from the outset, what the test signal forms only after a certain tariff connection and what high tariff number of switched connections. When ties are. Experience has shown represent in the history i $ switching through connections of the other totality of all to be through links the class state, any low-tariff compounds forms the central control unit is the main part. Times the test signal. It is now assumed.

The central control unit now contains, among other things, that the line sets RSl and RS2 with each other a z. B. trained as a counting chain Abzähleinrich- via the switching network KF (Fig. 5) are connected, device ZK, with the help of which it is the low-tariff Ver ao It is also assumed that the test set PS counts in the connections one after the other. The counting device described via an auxiliary connection h in the device can optionally be set to a certain number switching network KF likewise with the line set RS I bar, so that it is connected after 5, 8, respectively. Accordingly, the cores α and b 10, 12, 15 or more through-connections of the lower test set PS individually with the mutually negotiated connections each form a test signal connected speech cores α 1 and al or b \ and bl det, which they over gives their output za. As soon as the two sets of cables are connected. The central control unit ZSl from its counting device control unit ZS , after switching through the auxiliary unit ZK via its output za, has a test signal connection h via the relevant work field control, it initiates a command to the test record PS after the next processing unit Connection through-connection via the switching network, that 30 using its resistance measuring devices ps 1 and a so-called auxiliary connection for the purpose of ps2 independently of each other, two resistance measurement tests of the previously connected connection are then made on the connected speech wires. target. If the resistance measuring devices ps 1

It can now be assumed that there is a resistance value in each case in the and psl in the amount of the central control ZS 1, the test signal. If the 35 from R has measured, the switched-through central control ZS to be checked is then to be regarded as a connection through which the connection is established. In this connection via the switching matrix in the described case, the test set PS requests the assigned manner to be processed, so it holds the data via the work area control unit and specifies a corresponding character via the results of the relevant two switching matrix connections nis lines w1 and »v6. The data via that switching network connection 40 to the work field control unit, which this is in the bean to which the test set PS is connected, are already described on the central control unit and are known to it. On the basis of this data ZSl passes on. The central control unit recognizes this and, based on the front unit ZS1 in the central control unit ZS 1, that the test set PS is ready for further test signals that are present in the central control unit. After Abnun, the test set PS initiates a further connection through-connection in response to its signals to the work field control unit. To do this, it first turns back to the central idle state.

len allocation memory ZB of the central information In the event that in a through-connected version memory ZJS. With reference to the memory elements, tying a talk vein is interrupted, for example, measures the ZBL, ZBL, etc., of the central Belegungsspei- corresponding resistance measuring a Wichers example, can be read at any moment, as the 50 derstandswert in the amount of 2 R. ways the α-wires State (free or occupied) of all parts of the coupling - a switched connection, i.e. a Wifeldes in each case. With the help of the central occupancy value of 2 R , the resistance memory ZB determines the central control unit ZSl, measuring device ps 1 that a wire interruption via which path in the coupling network a connection at any point of the connected between the test set PS and one of the two there is an 55 connection. In this case, there are the other, previously interconnected coupling field level measuring device psl via its measuring output connections is possible. The result of this »v2 a corresponding signal to the assigned comes in corresponding switch-through data to the work field control unit after connection to the printout, which is sent via the respective work field concerned.

field control unit to the relevant setting device.

gen are passed in the switching matrix, which is then connected to a voice wire of a

in turn, a setting of the relevant coupling other free connection becomes a resistance value

make switching means. measured from 2/3 R. In this case there is a signal

It has already been stated that the central output is output via the output ^. When the control unit ZS 1 is touched, it is able to differentiate between low-tariff connections to one voice line of a connected connection and high-tariff connections to a voice connection to another connection. In the case of the connection of the th connection (double connection), a repeated tariff connection is measured in contrast to the value of R 1/2. In this case it will

19 '20

a signal is output via the measurement output w4. Kilfs connection. 'From this it recognizes one of the two

An earth fault is also possible. Has one of the switching network connections via which the previously

Speech wire of a switched-through connection, a switched, noisy connection runs,

a ground fault, a resistance value is determined using the data of that switching matrix connection,

measured less than R 1/2. In this case, 5 is the one about whom both the troublesome

a signal is emitted via the measurement output w 5. connected connection as well as the auxiliary connection Λ connected

The test outputs w6 to WLO of resistance running, the central control unit ZS 1, the data obtained from the measuring device ps2 meet the Meßausgän- central connection memory ZV via gen "from left to w> 5 of the resistance measuring pil. the entire course of the connected disruptive connection should also be pointed out. It takes from this that the two Widerstandsmeßeinrichtungen psl data and passes it to the data input and -amgsbe- and pi gets 2 their resistance measurements entgegen- FS, which prints the data. Carry out the centrally set measuring voltages. As a result, the control unit allows those memory elements to be left and also wire contacts between the encapsulation memory ZB marked as occupied, which correspond to the speech wires of one and the same through-connected 15 to determine the disrupted coupling connection, speaking parts in the switching network.

It is also possible to signal the previously individually listed various error cases to the central control unit outside the switching network KF , ie when the error is triggered. On the basis of the printed out data, a message to the central control unit can now be sought out and a closer examination can be omitted. Finding the exact draw will be.

The cause of the error remains beyond the later review - it is just as well possible to elements in the allocation memory as free again

In the event that the test record is to identify one of the previously as that has detected the faulty described error, it also requests the associated work field control unit in the head of the corresponding parts. According to peifeld correspond. These parts are then switched on, so it transmits the signals corresponding to the detected faults, which are released again for further connection establishment, via the measurement inputs w 1. If there are now a number of disturbances from to wlO. In the manner already described, the work field control unit carries the information about the cause of the error as a basis, so the errors found in the switching network can be sent to the center with the help of the data output device FS ausetralsteuerwerkZSl. This determines from the error messages printed out in a simple manner if a connection memory ZV has entered the error localization process.

For this purpose 2 sheets of drawings

Claims (1)

route over the switching network. This through patent claim: The data indicating the switching path are sent by the central control unit to switching matrix setting devices, Circuit arrangement for centrally controlled remote control which is slavishly dependent on the setting of all reporting switching systems, in particular remote 5 parts lying in the course of this through-connection path Intercom systems, in which via multiple (coupling relays) the switching system to step through Coupling fields through-connected connection of the previously determined by the central control unit a functional test (control wire breakage and / or th connection path. This setting device wire contact and / or earth fault or the like.) lines are decentralized, z. B. per coupling group, pre-subjected are seen, characterized by 10, to relieve the central control unit and the following features: to be able to work at the same time, what to be acceleration of the switching processes a) One contributes to the exercise of audit functions. When the connection is shadowed, the restricted test device (PS) changes the memory status of the input and output of the switching network to a central control unit in such a way that the memory is connected as a result; reassigned the new connection through-connection ... -,,, "-,",> "Share the switching equipment accordingly b) em central control unit (z. B. ZSL) represents memory elements of the busy condition of these parts after DurchschaUung a user connection _recognize i _ate. The same applies to the Auszw.schen a switching matrix input (z. B. at _{20 lö of} compounds. The Zentralsteuenverk? ^S \ l "Vu ^e. '. ^{N. Em. K} PP ° ^{el ldai} £« B ^to SS (eg. _{Provide Among} other things, it is therefore certain that the memory HS1) automatically has an auxiliary connection (/ i) which is always used to carry out the _{inhah the occupancy memory with the test functions (free or occupied) of all parts of the switching network} between on the one hand the test device (PS) _in Compliance is kept. and on the other hand, the same ₂₅ Koppelfeldein- _{Derar, strength} centrally controlled telephone systems are or output forth; programmatically. Each control function corresponds c) the central control unit (e.g. ZSl) under a control program. The central control unit removes distinguishes between a majority and a minority that is not necessary for the tax function required in each case subdivided useful connections agile control program a specially pre-ciner accordingly first and second categories 30 see semipermanent program memory. gorie and represents only a fraction of the The invention relates to a circuit Connections of the first category in an arrangement defined for centrally controlled telecommunications cyermitt Counting rhythm each with an auxiliary system, in particular telephone switching connection (/ 1), on the other hand systems in which there are multi-level switching networks of the second category after each useful connection of a function test connection one auxiliary connection (/ 1) each. fungus (vein breakage and / or vein contact and / or Earth fault or the like).