DE2062316C - Circuit arrangement for centrally controlled telecommunications switching systems, in particular telephone switching systems, with carrier frequency devices - Google Patents

Description

The invention relates to a circuit arrangement for telecommunications switching systems, in particular Telephone switching systems, with central control and with multi-level switching networks, via the connections can be established on through-connection paths that can be established with the aid of path search devices and with carrier frequency channels connected to coupling network connections (coupling network inputs and / or outputs), which are combined in groups and in groups for continuous function control by a group-specific pilot monitoring device.

By one on behalf of the Federal Minister for Post and Telecommunications from the Oberpostdirektion Reprint published in Hamburg in March 1962 from the teaching sheets of the Germans Bundespost, Issue B Telecommunications, entitled "Carrier Frequency Telephony on Cables" is it is known that the carrier frequency channels combined in groups are continuous Functional checks to be carried out by a group-specific pilot monitoring facility. in the If the carrier frequency channels of a group are disrupted, existing connections that are over these channels run, triggered, or the carrier frequency termination circuits corresponding to these channels are activated (also referred to as "carrier frequency transmissions") blocked from being used again. For releasing existing connections it is still known (p. 89) 'that several connections are released at the same time unwind one after the other to any other carrier frequency systems, with their channels the previously addressed noisy channels are connected via voters, not to overload. Through this staggered draw of several

3 4

Connections will also overload the dialing codes to be transmitted, and power supply facilities prevented the for averaging switching indicators and the like. A supply of the drive units of the relevant selector for a plurality of carrier frequency channels are provided. To realize this time-shared character channel, in Lent staggered triggering is used specifically for this 5 advantageously the carrier frequency termination necessary locking device. circuits can be saved at all by the

To block against re-assignment, the relevant channel-specific carrier frequency settings

already mentioned carrier frequency terminating devices (channel converters) directly to the

Each connection has an occupancy circuit that is connected to the panel field inputs and outputs.

Determination of the occupancy status (free or active). In the drawings Fi g. 1, 2, 3 and 4 is on hand

sets) each of these termination circuits serves. One centrally controlled telephone exchange each

according to the occupancy status of this closing switch- an embodiment of the invention only in essential-

These can be checked by voters or elements that contribute to their understanding

not. shown.

The object of the invention is to provide, under the preceding 15 F i g. 1 and 2 together show an overview for

suspension of their generic features to a telephone switching system to which the

circuitry effort for carrier frequency finding is applied; in

Restrict closing circuits. This Auf- F i g. 3 and 4 are parts in more detail

would be achieved according to the invention in that this switching system is reproduced. Next

Path search device in a manner known per se as 20, however, is illustrated with reference to FIG. 1 and 2 a general

a given the occupancy status (vacant or occupied) of all of my overview.

A number of groups / IF1 to AFn of inmation memory with a corresponding logical individual device are indicated. These groups who logic circuit are formed and that one referred to below as work fields. The blocking criterion of the pilot monitoring device in the 25 working fields AFl to AFn are part of a malfunction common for the relevant carrier-larger switching system. Each of these has frequency channels to the information memory with which an intermediate storage and recoding device effect is transmitted so that in this the busy (buffer) ASX to ASn, hereinafter referred to as the operating state of those switching network connections, simulated beitsfeldsteuerwerk, is individually assigned to which the disruptive carrier- 30 net. The work field control units ASl to ASn of the frequency channels are connected. Through the Invention switching system, the occupancy circuits including assigned lines l / l to Un and two communal switching means (occupancy relays, the same information collection transfer memory, and various relay contacts) can be used in carrier frequency from- hereinafter referred to as » Collective memory «denotes final circuits can be saved. The circuit arrangements existing up to now and known individually with two central controls ZS 1 are connected to the circuit arrangements ZS 2, hereinafter referred to for short as the central control unit for the task of blocking such carrier-frequency channels. The arrangement of two channels each, whose respective carrier frequency devices, collective storage and central control units, together with each gene, are subject to interference, two individual lines Ul to Un are used against re-assignment, taking advantage of what is already known for 40, both to increase the operational security of a group of carrier frequency channels entire switching system in the planned pilot monitoring device, therefore, look at the possibility of a malfunction or by the fact that a corresponding blocking criterion of a central control unit is transmitted together for the channels of a group directly as well as error monitoring by comparison to a central occupancy memory 45 two of two different central control units will. For the transmission of this blocking criterion to independently developed information, not all carriers need the occupancy memory Since this is not essential for the understanding of the invention wefrefrequenz-terminating circuits individually, control is to be requested in the following mainly and individually one after the other from a single one ZentFalsteuerwerk ZSl, one they are switched on, which would lead to a sensitive 50 single collective storage 5Sl and in each case a one-shock load of the same in the event of a faulty individual line, eg Ul, Ul , etc., which would lead to the case. The central control is much talked about.

more about registration (in the information store) The work fields each consist of a large number

after a fault, different types of individual devices are used only once. Below

took. 55 are among others in the coupling stages A and B.

It is also noteworthy here that, in contrast to the three-stage switching network, the

to known facilities an immediate blocking ordinate couplers joined knp-

of all pel groups KG 1 to KGn with interference-prone carrier frequency channels. Every head

connected switching network connections is initiated. pelgruppe, e.g. B. KG 1, is its own setting device

This assigns the device with the for known systems 60, e.g. S7 "l, which the Arbeitsfekl-

successively carried out triggering and locking control unit executes received Eindlbefehlc. Ie-

tion of these connecting paths because a coupling group with assigned Finstell-

eliminates the fact that a carrier device affected by a malfunction thus forms an individual device. In-

gerfrequency channel within the devices that are separate for its blocking are also the entirety of the

allotted time is still occupied. 65 switching matrices of the switching stage C with their F.in-

Provided that in a known setting device STc. It is also possible to use this Kop-way (cf. German Auslegeschrift 1220 903)? Ur pelviclfachc in one field of work in several in transfer of in assignment to individual connection devices with their own setting devices

5 6

summarize. Individual devices are also corridors of each of the switching matrices via at most one

Connection sets , eg VSL and others, can be reached for a single connection path. Through this

half that is formed from the work fields AFl to AFn when searching for a route from a coupling field input

deten switching system to be switched through by selecting one of these outputs dei

fertilize, furthermore carrier frequency line sets RSl, 5 through the switching network for the path

RS2 to RS4, the connecting lines (local or desired connection already clearly defined

Trunk lines) to switching systems at other The switching matrix is, from its inputs to the

Places for incoming and / or outgoing connec- tion outputs of its coupler, purely fan-like

fertilize are assigned individually. To these individually built up. ^T rotzdem but can two Koppelfeld-

len devices also include dial-up receivers, e.g. WSl io inputs, alternatively using different channels.

and others with which subscriber stations are connected for the other, because the two

The duration of the recording of the multiple common inputs from the participants

given dialing information temporarily switching multiple outputs or several times each two of the

be bound. Furthermore, below in the last coupling stage count in various fields of work

individually explained pilot monitoring connection sets 15 belonging to and each via an intermediate line

PA - in future only referred to as "pilot records" - to (ZLC) permanently connected switching matrix outputs.

the individual devices. are accessible.

In addition, not shown subscriber connections can be arranged by the central control unit ZSl , which is used as individual ao search device at the same time as paths or in groups. all necessary switching data on hand

All these individual devices of a work field, from previously received via a work field control unit z. B. AFl, common circuits, election information are determined over them. A central inforz. B. Uli, connected to the relevant Arbeiisfeidsteuer- mationsspeicher ZJS at the same time serves as a route, for example ASl . Each individual search memory (also known as "occupancy memory") contains connection means for connection to the search memory. To this end, if the requirement for an employee is known, among other things by means of sequential switching in the individual device, the following is also available:
manner 30 described in more detail below

an incentive to switch on this individual device German patent specification 1190518,

handed over to the work field control unit, the German Auslegeschrift 1 251 816,

is identified and for submission of an address - German A-islegeschrift 1 252 270,

command leads to the individual device in question. German interpretation document 1 252 754,

Each work field control unit, e.g. ASl, is therefore with 35 German interpretation document 1 253 769,

the individual devices of his group - his German Auslegeschrift 1 254 196,

Field of work - over those common circuits, German Auslegeschrift 1? 54 703,

e.g. UU. connected, to which the individual German Auslegeschrift 1 254704,

rate can be switched on individually. German interpretation document 1 256 267,

The coupling multiples of several fields of work at 40 German patent specification 1,275,149,
a single common coupling form a place- German Offenlegungsschrift 1 487 929.
that menhang (are field only for reasons that are not included with the grouping of the switching matrix in ursächjichem context, the central information store ZJS eg reliability, expansion. ^ - among others for all parts of Koppelfeides (Einmöglichkeiten and issues of traffic Bela Lung) in 45 corridors, exits and intermediate lines) each with a multi-level area of responsibility for several employees. Field control units are subdivided on the basis of these storage elements. 'The coupling matrix can be read from the coupling matrix at any time, such as the multiple status of the switching matrix in the switching levels A, B and C of the switching matrix (free or occupied) of all parts of the switching matrix in each case from fields / 4Fl to AFH . With the help of the central information memory from coupling matrices in three via intermediate lines 5 ° ZJS, the central control unit ZS1 determines, preparatory interconnected coupling stages; for every desired connection through-connection, to the inputs of the first switching stage (Fig. I: A) via which path in the switching matrix a through-connection is subscriber lines, connection lines and can be implemented. The corresponding result of this, all inputs and outputs from to the connection comes in corresponding connection data for the establishment and connection monitoring per connection. B. connection field control unit to the relevant Einstelleinrichtundungssatzc KSl, dial receiver WSl, carrier requests are transferred in the switching network, which in turn qucnz line sets ÄS1 to RSn and the like, then similarly a setting of the relevant coupling switched on; Make outputs of the coupling multiples of the sound means.

ile to the penultimate coupling stage, which are individually linked to the 60 As stated, the fields of work

Inputs of the coupling multiples of the subsequent, e.g. AFl, three coupling stages each, whose coupling- '

connected coupling stage are connected in multiple via intermediate lines in the manner

licser each subsequent switching stage are tied in pairs that each have a switching matrix output in

: interconnectable. Such a switching network shows the first to penultimate switching stage A and B te

jnd already describes the German patent specification 65 switching matrix input in the second to the last

I 235 379. The special feature of a special coupling stage B and C is individually permanently assigned

In the formation of such a switching network, there are outputs of the switching matrices of switching stage C.

larin. that the outputs of a switching matrix input are in the work fields AFl to AVr, »« «* r»; i

7 8

no sound, but the main part is from Ar- z. B. l / l, intermediate lines leading to the work area in the relevant work area control unit, eg ASi, ZLC, are individually interconnected in pairs in both the collective storage 551 and the work area. so at both ends, each with a send and

The adjacent two central receiving circuit, z. B. TIFIGA and E 1/5 VGA 1, control units Z51 and ZSl is each equipped with a program 5, each assigned to the individual line memory P51 and PSl . From the Pro transmission technology is adapted. The central control unit removes each of these legram memories, according to fig. 3 and 4 show - depending on which program (e.g. route search) one is executed in each case. The transmission and reception circuit used by a work field control unit, via a hybrid circuit, for example GA, GAi, with an associated collective memory SS 1 in the central transmitting section, e.g. B. F, 51, and a receiving part, e.g. B, control unit to process recorded information , El. Each hybrid circuit is used for transmission. niche adaptation to the line in well-known

FIG. 3 shows further details of a work field control unit ASi shown in FIG. 1 with a corresponding simulation. equips.

The work field control unit is on the one hand above its individual devices, which are assigned to the functions. B. U 11, with the individual devices, given some definitions. As from the vorz. B. the setting device STi of the coupling group can already be found in the explanations, KGi, and on the other hand, via an individual line, information is sent both from the individual tungi / 1 to the central ao devices to the central control unit shown in FIG Central control unit Z51 assigned collective memory 551 central control unit to the individual devices via train connection. gen. In any case, in addition to the collective memory

The work field control unit shown in Fig. 3 can 551 the work field control units here as an intermediate of the individual members, e.g. B. from the members. The information transfer from an instelleinrichtung5ri, can be requested. With the help of “5 individual device for collective memory 551, the identifier Jd is always referred to as“ read ”in the following. The umder situation, among several simultaneously present information transfer from collective storage incentives, which via request contacts, is always more to an individual device than z. B. ah. be switched on, select one and label it "write". Correspondingly, in a corresponding connection command to the work area control unit, the criteria “read” and the corresponding connection incentive are created as “write”. The switch relay from the central control unit, z. B. Mon to submit. The information circuits to be transmitted from each individual device are then only brought up to the work field control unit as commands. That draws.

Switch relay, e.g. B. Mon, of the individual devices 35 The »reading« criterion is found in the workfcld control area in a across all individual devices. Werk always formed if on the basis of a request-extending control matrix. tion on the part of an individual device, e.g. B. from the

With the help of contacts mo of the relevant on-setting device 57 "1 via the request contact relay Mo , both contacts s and clock ah, this was connected to the work field control unit windings E from the relay of the setting device 5Γ1 40 (relay Mo) and information which has transferred to the contacts s and its information memory 75, the windings E connected to the common current is now to be transferred to the collective memory 551. Circuits U 11 are multi-core. Relays are also set. pre-contacts s and relay windings E the Einstellein- from that all switching operations of the previous radio direction 57 "1 in contrast to the simplified 45 tion processes are ended. If, on the other hand, there is none of the representation, several are provided. For a kind of request on the part of an individual transfer of information to and from the work council, the knot control unit is set up in the work field control unit, its switching elements and the term “writing”, which expresses the readiness of the assigned individual devices under the work field control unit brings about information about line influences in immediate 5 ° mation to record the criteria exchange in the collective memory 551. The circuits that are common to this field of work, e.g. B. UH, to be transferred to the control unit.

Information may be in the form of In addition, it may also happen that

several simultaneous criteria on their veins. neither a requirement on the part of an individual The switching means shown are still present in the present device that the work field control unit Case electromagnetic relay or contacts of is ready to receive information. This beihnen. Under certain circumstances, however, it is more advantageous to have an instinctual state if there is a field of work for it others, e.g. B. electronic switching means to control unit with the processing of information use. is not finished yet. In this case the labor

As has already been described, each ^{field control} unit is used for no information exchange of any work field and the individual fields assigned to it with the collective memory are ready. The »blocking« criterion is formed in the work field control devices common circuits of the reciprocal works. Information transfer through immediate criteria - The criteria described »reading«, »writing«

exchange. For information transfer between and "blocking", the collective memory and the work field control unit are formed in the sequence control AB; the criterion ken, on the other hand, is used for these individually assigned lines - "reading" is referred to via output L of the sequencing controls Vi to Un, hereinafter referred to as "indivision AB" and the criterion "writing" is referred to via a double line ". Each of these lines output 5 from the sequence control.

9 10

The "blocking" criterion consists in that the two The information is sent from the work area control unit to the "reading" and "writing" criteria at the same time to the sample memory in several consecutive ways. But it is also possible to transfer the criterion to the sections. Each partial information “blocking” due to the lack of the two criteria is introduced separately by special criteria to be marked “reading” and “writing” or 5 and confirmed. This and the section-wise information for a special signal circuit supply transmission will be explained in more detail below. These criteria formed in the work area control unit are transferred to a switching device P. Each piece of information is divided into several pieces of information. divided. All information is coded in binary. If the criterion »Le- About the individual devices of a Arbeitssen« is present in the work field control unit, the switching device P in turn outputs io field common and these with their work a requirement identifier via the line i / l field control unit connecting circuits, z. B. U 11, to the collective storage. If, on the other hand, all switching criteria for information to be transmitted to the central working field control unit from the “blocking” criterion are present in the central working field control unit, the switching device outputs other switching indicators 15 working field control unit corresponding to direction P at the same time. Depending on the scope, only from the line U i to the collective memory, then this information is in turn subdivided into a maximum of four pieces of information in the work field control unit, apart from this, beforehand. In the request indicator for the work area control unit information store JS is given for each of four parts. (Details about this below!) Information is provided by part of this memory JS

The collective storage SS 1 (Fig. 2) can be seen in Fig. 4 20: JS1, JS2, / S3 and / 54. Further details are also given in the leg. The one part of the memory BS, which is individually assigned to the faulty memory BS for each of four pieces of information from the work field control units, is provided: BSI, BSI, lines t / l to Uη point in the collective memory SS1 BS3 and BS4. The different designation (FIG. 4) for each work field has a transmission and reception circuit for each information memory JS and command memory BS . In addition, the group as states that for the central control unit in memory per work area there is one connection device for one case of "readable" information and im, which in the exemplary embodiment is "writable" commands in each case from two other cases. Coincidence gates, e.g. B. G 25 and G26 for the These terms have already been defined. Work field control unit ASl exists. Each consisting of several pieces of information

Furthermore, the identifier Jd 1 in the collective 30 information and each of several sub-commands

memory, which is used to receive the existing command for transmission to the

the request transmission line U 1 given to the workfcld control units by a length indicator

designation and to select one and an address added, which the respective indi-

cinzigen requesting work field control unit is called dual device.

and after each identification process the respective length specification is obtained in the following way cc address of the relevant work field control unit: The coded form forming the information memory JS is emitted. Furthermore, the An sub-memories JS1 to / 54 serve to receive each switching control Ad in the collective memory, the one piece of information. The scope of information on the basis of a coded address transmitted to it is determined by the number of pieces of information from a work area control unit, a corresponding 4 ° This number is the length specification. In the connection criterion, it is set to the relevant common part of the information memory / 5 fixed work field control unit. This is easily possible by adding the number of visual coincidence gates, e.g. B. G25 used for information storage and G 26 gives off. The work field control unit is determined in a known manner according to the partial memory. FIG. 3 and the collective memory according to FIG. 4 are 45 Length information is described jointly as a code character by the common subsequently. the same part of the information store / 5 among other things

If the criterion has been transferred to distributor V in a work area control unit and is stored here rium “read”, then - as already described the assigned individual line Vl 50 transmit the length specification It says which one is transmitted to the collective memory. Here, the subsequently transmitted Infordessen identifier Jd 1, which has a mation or the command on the basis of this, reaches a quantitative extent. If the overall identification process is carried out and the address corresponding to the content is less expressed in commands instead of four pieces of information or sub-work field control, then the information-coded form is output. This address is both mation 55 or command transfer 'on corresponding spre a list memory via its L Eingabeeinrich- accordingly less partial information or part commands tung EL offered limited and for Anschaltesteue-. Through the previous Längenaneabe white tion Ad transmitted, which in turn with the help of the respective receiver, namely the respective gate circuits concerned, z. B. G 25 and G 26, work area control unit or the collective memory, the connection of the relevant work area 60 when the respective information or command override unit corresponding individual line Vl transmission will be ready

After that, the sequence control ABl also gives each such transmission

of the collective memory via the gates G37, G30 and the address information already mentioned

G 26 a call indicator for the switched on so always previously indicated from which indivi-Arbeitsfeldstcuerwerk, which _{comes in the switching device P 6 5} duell device information comes or for

(Fig. 3) is implemented and as an acknowledgment character which individual device a command is determined

to input Q of the sequence control AB des Arbcits- It has already been stated that each piece of information

fcldstcucrwcrkes is transferred. is divided into several pieces of information

11 "12

The largest amount of information is determined by four parts - also already described - an identification information. The partial information and a connection of the relevant work area on the transmission line Vl of the second type of control unit. Then sends the Ablaufsteueunmittelbar preceding address indication may OJ tion of the collecting reservoir via the GatterG37, in addition the extent of one or two part-5 G 30, G 26, and the line U 1 taking a polling tag information. The address information for the work field control unit, the length information preceding the switching, is received in the present device P and, as an exemplary embodiment, a maximum of the scope of a piece of information for the sequence control AB of the work field control unit. is passed on and via its input Q in

The length specification, the address specification and the io this arrives. The sequence control AB takes

A maximum of four pieces of information or commands are then sent with the help of distributor V one after the other

in groups of the same size of binary code elements - transmission of the length specification, the address' des

th individual device cached in the work area control unit and the maximum

and recoded and transmitted from or to this. - information consisting of four pieces of information

Each code element comprises 1 bit. A certain 15 before.

Number of bits, ζ. B. eight, form a group of Simultaneously with these operations of the Anschalbinary code elements. Such a group is called device (gates G25 and G 26) and the information in contrast to "bit" with "byte". The collective memory has prepared the request (acknowledgment Q) , the length specification includes 1 byte, the address of the upcoming information recording. The relevant individual device 2 bytes and the information or the command from the identifier Jd 1 in binary coded form in each case comprise the maximum given address - controlled by the times 4 bytes. The first byte, containing the length sequence control ABl - via the input device, the second and third byte, containing the device EL of the list memory L in the left part of the address, and - in the present case, a first free memory line is written. In the example, a maximum of four more bytes, so this address is the address containing information or a command, form the relevant work area control unit, which do not each share a "word". The transmission with the address of the respective individual device of a word via the individual line U 1 may be confused.

controlled with the help of auxiliary criteria. The collective memory now receives this auxiliary criteria are »Read« (L), »Write« (S), »Lock length specification, address of the individual device« (L + S) - as already described above - and information existing word, then this and "receipt" (Q) arrive. For the transmission of such via the gate circuits G 25 and G 29 and the words, the individual in the information input device EL are stored in the relevant, corresponding memory / 5 bytes each to an input of the correspondingly prepared memory line of the list memory L. Gates G 4, G 5, G 6, G7 and G 8 offered. The 35 - The process of transmitting a word will bring gates G 4 to G 8 symbolically here to be described in more detail below. Expression that the information that is mentioned in each case at one of its The collective memory initially receives the inputs can only be passed on from the work field control unit via the line U1 when the length information transmitted via the other. As soon as he has received the input of the gate a corresponding sign to the 4 ° men, he acknowledges the receipt; is created in the sequence transmission. This character is received by the control AB via its input Q a Quiteinem distributor V with the help of its alarm ν signal character. The sequence control then successively sends an incremental pulse to the distributor V. G12 to the various gates Gl to AB , so that one after the other the individual This switches its in switching arm ν by one step bytes for transmission, namely 45 further. The gate G 4 is blocked for the transmission of the length specification, then the address of the relevant length specification and the gate G1 for individual devices and then the information or the transmission of the address from the identifier Jd of the command. The gate circuits G 4 shown to the code converter CIi 1 are controlled to be permeable. Inbis G 8 are used as gate circuits for one byte each. After the collective memory is prepared for individual code characters, the code elements (bits) of which are not described in a manner not described for receiving the individual device, which is not shown in detail . These are transmitted to one another, to be understood. The address is now sent by the Arbeitsfeldsteucnverk to the

The aforementioned distributor V is transferred from the collective storage and controlled in the already geAblaufsteuerung AB. As the working field- called memory line is written. The collective control unit of one of the individual devices in turn acknowledges receipt, which means that the request will be made as soon as the information has passed the sequence control AB of the work area control units! and the length indication in the information memory JS again receives an acknowledgment signal via its input Q and the address in the identifier Jd transmission.

are ready and provided the length information is in the same way after the address de

the distributor V is transmitted and if this 60 individual device in the form of additional bytes dii

also assumes its rest position, corresponding partial information from Arbeitsfeldstcuerwerk / un

Transfer criteria to collective memory in a manner not described in detail. The length indicated

from distributor V and from identifier Jd an die was previously stored in distributor V. Fs lets down

Transfer the sequence control AB , which therefore causes the nrdnungs in the work field control unit

sen, the criterion "read" to the switching device P 65 according to the end of the information transfer fcsl

submit. As described, this in turn gives a place. Since the length specification is attached to the collective memory

Request identifier was transferred to the collective memory (which here except in the 1st list memory 1

(Fig. 4). The collective memory takes - as also taken up by the sequence control AB 1

13 14

the same also applies to the collective memory. Carrier frequency terminal TE on. This includes in

After receiving the last partial information in a known manner in several modulation or

For the last time, the collective memory gives a demodulation stage devices for modulation

Acknowledgment to the sequence control AB of the working and demodulation of the corresponding channels

felcisteuerwerkes back. 5 carrier frequency bands. In the carrier frequency terminal

After the information has been stored in the collective memory, each channel is assigned a channel converter, for example KUl, KUl along with length information and the address of the relevant up to KUn . Also, in the telephone custom device is received and z em together with switching system each channel Tragerfrequenzder address of the respective working area control plant Leitungssat ?,. B. RSl, RS2 to RSn, assigned, stored in a line of his list memory L io This already mentioned above line salts has to serve, he switches himself from the individual line in a known manner for recording and passing on UU and thus from the work field control unit ASl of dial numbers and the like . from the concerned again. It is available to receive further information via the corresponding work area control system. It switches to the central office already described and vice versa. They are sent one after the other to the various work field controls, as well as the other individual devices, and receive their like, such as connection sets VSI, Wahlsäue successively one after the other from different individual devices , etc. to the respective work field devices over the various work fields - Control unit can be connected to the ArI control units already described for this information with length information and manner, in order to enter the required address of the respective individual device and ao information exchange with the central control unit to save them individually in the lines of the list memory.

together with the respective address of the relevant

the work area control unit one after the other. on known circuit arrangements for carrier

Either if the list memory L of the collective frequency control sets is not full of test and occupancy stores or in certain fixed time intervals set for the identification of the occupancy, the central status (free or occupied) of the respective line control unit ZS1 switches to the collective memory 551 at. sentence on. To identify the occupancy status Hicrzu there is over the line λ: (Fig. 4) Either each of the individual devices is used - as the speaking request and connection criterion has already been explained - from the central control unit ZS 1 to the collective memory. This criterion is assigned to 30 central information storage units ZJS. The both to the Gattcrschaltungen G 34 and G 35 as a central control unit and the central information also for scheduling OJ. In the individual memory serve transmits, inter alia, as a route-finder non manner shown now the collecting device and assignment memory (also known as "path memory 551 by means of its sequence control AB 1 search memory «). In the latter, the and its output device AL in a train 35 occupancy states (free or occupied) of all parts of the entire content of its list memory for the switching matrix are stored, including the central control unit, that is, in each case assigned to the states of all switching matrix inputs and outputs . There is also no need for the address of the work area control concerned, the carrier frequency mechanism, the length specification, the address of the respective cable sets with test and occupancy circuits of the individual device and the information. To equip this 40. The occupancy status (free or occupied) is the content of the list memory L line around each of the carrier frequency line sets is therefore for the central control unit successively the route search not on itself, but only "read out". . , central information store readable. As already

The carrier frequency control unit can be specified in a corresponding manner by the central Commands together with the addresses of the 45 cable sets also completely saved and the loading work area control units and collectively into a number of relevant channel-specific carrier frequency endings transferred to the collective memory. Since facilities (channel converter) directly to the coupling however, field connections are not switched on for an understanding of the invention when the over is decisive, there are no further connection items that can be switched on these carrier frequency channels described. 50 paths with a central character channel (see German exit

Now that a centrally controlled telephone code 1 220 903) is operated,

Switching system to which the invention is applied As already stated in the introduction, it is

is, has been explained, the description is then already known, summarized in groups

ßend especially on the training carrier frequency channels according to the invention in groups of the continuous

features of the illustrated embodiment, function control by a group

play a. individual pilot monitoring equipment to

The carrier throw shown in FIG. 1 has already been used. For this purpose, the pilot indicated in Fig. 1 is used

frequency Lcitungssatzc RSl to RSn mentioned. This monitoring device PU, which the carrier fre-

Line harnesses are often also assigned as »carrier-frequency terminal TE . The functional

frequency transmission ". 60 wise of all the institutions serving the pilot monitoring

Carrier frequency transmission systems for use with carrier frequency technology are based on

in front of the listed literature as known

set. A carrier line - assumed in Fig. 1. Accordingly, in the case of

indicated and denoted by TI ' - includes bc interference of the carrier frequency channels of a group

actually a number of · carrier frequency channels, 65 existing connections triggered over these

each of which to establish an intercom channels run or become these channels

Connection can be used. The carrier-corresponding carrier frequency transmission rates against

frcqucnzslrcckc has a new occupancy blocked at both ends. To do this, the

Pilot monitoring device PU to the central control unit in the case of carrier frequency

Terminal TE in the case of a fall a corresponding niation to the fact of the stoning

Sil d ih d d D Zltewerk evaluates this ^ ™? "" '

Terminal TE in case of failure a corresponding niation on di

Signal to the pilot set PA assigned to it. In the central control unit evaluates ^ ™? '''Already for adjusting STI together above the address of the way betrettenaenri.u described in detail are now the pilot 5 automatically to the effect to dau there aie £ set PA a corresponding Anschalteanreiz at the with the störungsbenaiteten £ ™ Β ^"ι - ~ * ... the Idcntifiziereryrf (. F ig 3) channels of the relevant working wired ^Ko PP ^elfel ^ ^{ans i: hl" S} ^ _ll ° _"n: beitsfeldsteuerwerkes' from soon as this. the on-off is determined and a corresponding simulation is included in the switching incentive and a corresponding occupancy memory is carried out. »rirmäRieer

Attachment command returns to the pilot set PA , io In connection with this, in. ^ EcKmau this switches on a larger number of normal circuits common to ^{the work field (711 to the information memory common device together ^ wer} ^ "' JS of the work field control unit Then which latter for the relevant Piι otsetze transmits the pilot record to the work field control unit common address at the central controller * · information that those carrier, 5 The in this way ^z " ^samm _f ^e . ⁿ ^ f ¹ ^" ™ ^ frequency channels that for the pilot monitoring by are at fault report the ^"n the corresponding pilot monitoring device factory distinguishable Semacht, subject of a technical malfunction affected central control unit, a correspondingly d '^ are. connections that run through these channels. information exploiting des m weiter od ^ are to be triggered In particular, it is to be prevented that a o plan in a very detailed manner, anyway n broad ^ΙηΓο new connections are switched through over these interference-prone carrier frequency channels. will wear. This ™

The information indicating the fault, which is the same as in the previous e

Designate addresses of all jointly monitored and teten pilot set, ^ p

currently noisy channels corresponding to a ₅ carrier frequency channels of a common mo carrier frequency line sets, will be affected by the tion. Work area control unit in the description already described now returns to the

Send back to the central exemplary embodiment via the collective memory SS1. As soon as the ^^ control unit ZSl transferred. Have been thus experiences is eliminated state, calls the P "> ° tsate £ ^""f" central control unit which carrier frequency channels of 30 its associated Worked ^ld ^ u ^e rwerk aη On a disturbance affected. Accordingly, for the. Case of failure ^ ™ f ^™ ΑΛ ^ 2Ϊ £ this information, it shall without delay a corresponding turn is common for the öttrettenaen speaking simulation in which, among other things, as Trägerfrequenzkana e information serving the pilot set allocation memory central information about the working field controller and Samme memory ZJS before: Those with the relevant carrier 35 memory SSl to ^the / central control unit Z51 via frequency line sets connected coupling field, the termination of the disturbance status are displayed regardless of their actual status. The central control unit ZSl ^k ^ " ⁿ ™ ^ occupancy status in the central information thereupon in the central informaüonssp «» ZJb the memory ZJS is marked as occupied, ie it will be the relevant carrier frequency channels emspre the busy state of those switching network connections 40 corresponding ^ switching network inputs ^ free. · Be, further simulated, to which the interference-prone carrier path search processes ^ for the production of " ^{your verb} ^ frequency channels are connected. It is also possible to fertilize these coupling network inputs, in the occupancy memory the corresponding ^ 2 £ occupancy ^ state in the one hand state of occupancy with the ^ * ^^^ (use of the switching network connection by 45 for connection through a switched connection) and on the other hand will be. ",""Hm, Ηρπ

Blocking, e.g. due to a malfunction, is also possible as a modification of this

divorce - to train existing on the noisy pilot set so that after, delivery erner carrier frequency channels switched through Verbindun- first error message mg * ^^ be gen "™ on not specifically described 50 this ^^ way intervals by the central control unit successively off ^? ^

^ß Γη an advantageous modification of the absence of this repeated g

It is set up to simplify the function - on the other hand, it shows the central control unit the termination It is also possible to run those from the pilot record in the fault state.

For this purpose 2 sheets of drawings

Claims (7)

Patent claims: 1.Circuit arrangement for telecommunication switching systems, in particular telephone switching systems, with central control and with multi-stage switching matrices, via which connections can be established on through-connection paths that can be established by means of path search devices, and with carrier frequency channels connected to switching matrix connections (switching matrix inputs and / or outputs), which are in groups are summarized and are subject to continuous functional control in groups by a group-specific pilot monitoring device, characterized in that the route search device is known per se as a central information memory (ZJS) depicting the occupancy status (free or occupied) of all parts of the switching network with a corresponding ao the Logical combination circuit is formed and that a blocking criterion of the pilot monitoring device (PU + PA) in the event of a malfunction jointly for the relevant carrier frequency channels to the information memory is transmitted with the effect that in this the busy state of those switching network connections (RSi, RS2 ... RSn) is simulated to which the interference-prone carrier frequency channels are connected. 2. Circuit arrangement according to claim 1, characterized in that the SpeTcriterion is transmitted by the central controller (ZS I) from the pilot monitoring device (PU + PA) to the information memory (ZJS). 3. Circuit arrangement for telecommunication switching systems according to claim 1 with according to task, function and / or mode of operation dividing into different types, depending on the type also provided multiple individual devices, in particular carrier frequency line sets, switching networks with path search and switching network setting devices, with subscriber connection circuits, dial receivers, internal and external connection sets, registers and the like, and storage and / or code conversion devices that are shared with the individual devices and that are used for mutual adaptation in the transmission of information between the central and individual devices in both directions and that are connected to the individual devices and to the central Control can be interconnected, characterized in that the individual devices are summarized in such closed groups, within each of which some of the individual devices of the different types are combined, and that these groups each have their own ene, with regard to the different types of individual devices, universal buffer memory and / or code conversion device is assigned, which is only connected to the individual devices of the respective group, and that the pilot monitoring device (PU I- PA) with the buffer memory and / or code conversion device as well how the other individual devices of the respective group are connected. 4. Circuit arrangement according to claim 3, characterized in that the Pilotübcrwachuiigseinrichtung (PU + PA) comprises a telephone switching equipment associated connection set (PA) , which enters into information exchange for fault signaling such as the individual devices with the buffer and / or code conversion device. 5. Circuit arrangement according to claim 3, characterized in that connection sets (PA) of several pilot monitoring devices are combined to form a common device with a common address in the central controller and that the address of the respective pilot monitoring device of an interference-prone group of carrier frequency channels is reported to the central controller as information. 6. Circuit arrangement according to claim 1, characterized in that a pilot monitoring device (PU + PA) repeats the blocking criterion continuously after a malfunction occurs. 7. Schaltjanordnung according to claim 1, characterized in that channel-specific carrier frequency terminal devices (KU 1 to KUn), which correspond to connection paths equipped with a central character channel, are connected directly to the switching network connections.