CH631305A5 - Circuit arrangement for telecommunication switching systems, particularly telephone switching systems, with connection-individual switching devices and intermediate-level processors - Google Patents

Description

The invention relates to a circuit arrangement for telecommunication switching systems, in particular telephone switching systems, in which connection-specific switching devices of several types are equipped with receiving switching means and / or transmission switching means for dialing codes transmitted via connecting paths, and in which the connection-specific switching devices of the different types are specific and in each case switching devices of one type common control devices are assigned, and in which dialing indicators received in the switching devices are received by the control devices and fed to further processing, and in which the control devices store switching labels serving to establish the connection in association with the connection-specific switching devices, and in which switching devices each produce more connections are involved as a kind.

A circuit arrangement of this type is already known from DT-PS 1 190 517. Query control devices of subscriber circuits (subscriber line circuits) and query control devices of relay sets (connection sets) intended for internal connections and for outgoing and incoming connections are used here as type-specific control devices. For the further processing of the information received via subscriber line circuits and connection sets in their query control devices, a “forwarding control device” is provided which functions as a kind of “information hub”. It does not process the information itself, but forwards it for processing, if necessary, to a corrector, a route search and switching matrix setting device, a connection monitoring device (connection memory) and also query control devices. The transfer control device is thus in an exchange of information with these devices. As a result, it also regulates the process of every connection, i.e. it ensures that the individual switching operations required for establishing a connection are carried out in the correct order and in the required assignment to one another.

The object of the invention is to have the switching operations required for establishing the connections carried out as independently as possible by the control devices which are common to the connection-specific switching devices and for a further one

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Decentralization of the control processes is a favorable prerequisite. At the outputs of the switching matrix K, dial reception must be created. According to the invention, this object is connected to devices W1 to W2. They are used to resolve the fact that when a connection is established among the switching devices calling subscribers from subscriber stations, control information associated with the species is assigned to specific species. Furthermore, a control device is defined at the outputs of the directions as the connection setup leading for this connection field K internal connection sets H1 to H2 that is involved in the sen involved. Every internal connection set, e.g. Hl, is both with each control device in association with that at the respective one input, e.g. here, as well as with one output each, e.g. Connection involved connection-specific switching unit, each connected to a switching matrix output. Input directions are stored signals that indicate, and the output of an internal connection set are thus connected to two of these control devices when producing the respective different outputs of the switching matrix K, connect as the leading among them the task Furthermore, exchange connection sets LI to L2 (also as "external - the further processing of the dialing code, which is denoted by connection sets") connected to outputs of the switching matrix with the help of the connec- Trunk connection sets are known to be used for switching devices for the execution of - for the production of outgoing and incoming men and for this purpose directly and / or via the relevant non-15 external connections (trunk connections), that is to say control devices which connect to those involved in the connection - between one to the other The existing telephone extension switches provide connection-specific switching devices to the switching system connected subscribers and become one, and that in the connection-specific switching devices involved in establishing a connection via the public telephone exchange, the subscribers to whom the present telephone extensions are received and to the assigned control devices 20 switching system dialing number from the non-leading locks passed on via so-called trunk lines. The trunk connection sets LI to L2 are dop control devices based on the stored information, i.e. each of the exchange connection sets can be used for naie to the leading control device, specifying the external connections involved in the establishment of both outgoing and incoming connections and leading from them. It is also possible for the control device-controlled connection-individual 25 to provide part of the exchange line sets for double-directional switching device or switching devices to be transmitted traffic, while another part of the exchange office. connection rates in exchange rate lines only for

The invention makes it possible to divide existing external connections and exchange connection sets only for partially central control devices without any external connections arriving to them.

common, that is to say a switching system altogether to accomplish the above-mentioned subscriber connection circuits TN 1 to the same central control or “forwarding control device” TNn, dialing reception devices W1 to W2, internverbin. This means that central devices can use the usual duplication sets H1 to H2 and trunk connection sets LI to L2 (cf. the specialist book «Computer equipment« connection-specific switching devices ». Controlled switching systems» by Peter R. Gerke, Springer- means that each of these Switching devices for the long-term publisher Berlin / Heidelberg / New York 1972, page 102 f0 can be used for a connection or for the duration of the establishment of a connection If your control area within a connection is only used for a single connection in the switching system, each of the connection-specific switching elements makes it so that its temporary failure in the case of directions can only be used for the establishment of one at the same time Malfunction can be accepted 40 or through circuit of a single connection used

In the drawings, Figs. 1 to 6, one embodiment is shown. The above-mentioned subscriber line circuits of the invention, which are only essential for their understanding, TN 1 to TNn also show subscriber-specific switching components, but the same does not apply to them. This peculiarity is only limited to the completeness. half mentioned; it is for understanding the invention of

In Fig. 1, a private branch exchange is not critical.

would be shown in extracts. The connection-specific switching devices are shown in FIGS.

Individual components of the telephone extensions shown in FIG. 1 differ in their different types. Connection switching equipment reproducing switching devices of one type in more detail are e.g. the participants. Mer connection circuits TN 1 to TNn. The election reception

Approximately in the middle of the picture in Fig. 1 is a three-stage coupling 50 directions W1 to W2 represent a second type of connection field K with the coupling stages K1, K2 and K3. This represents individual switching devices. A third type of switching matrix has an elongated grouping. The short, binding-specific switching devices are the internally vertical and strongly drawn lines in binding sets HL to H2. A fourth type of connection-known per se switching matrixes, each with a visual switching device, are the exchange sets of multiple switching matrix inputs and switching matrix 55LI to L2, to which the external connection cables Ltl to Lt2 are outputs. The outputs of the switching matrixes of the first are connected.

The number of connection-specific switching devices with inputs of the switching multiples of the switching stage gen of each of the different types are chosen as it is connected to K2. The same applies to the outputs of the switching network, taking into account the given range of traffic for the switching stage K2 and the inputs of the switching network 60, optimal handling of the telephone traffic at the functional level of the switching stage K3. The inputs of the switching matrix is the most massive. It should also be pointed out that the coupling field inputs connected to the coupling stage K1 represent the switching field inputs of the coupling output side of the switching matrix K. The outputs of the switching multiples of the coupling-specific switching devices of the various switching stages K3 represent the outputs of the switching matrix rather than in the manner shown (sorted) rather

At the inputs of the switching matrix K, subscribers are expediently also connected in a mixed manner to the outputs of the switching circuits TN 1 to TNn. This part of the coupling stage K3 can be connected. In addition subscriber connection circuits are individually assigned to subscriber stations T1 to Tn instead of a switching matrix with extended grouping Tn. also a switching matrix with reverse grouping according to the

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German patent 1 235 379 can be used. This control unit cycles through all of them one after the other

The connection-specific switching devices of the different subscriber connection circuits and takes switching criteria of various types, i.e. So the subscriber line circuits, on the current switching state of each of the partial dialing devices, internal connection sets and subscriber line circuits.

Trunk sets are grouped together. 5 Each of the subscriber line circuits according to FIG. 2 each comprises a group of connection-specific switching devices and also holds a relay Q. This relay responds in one sub-device only of one type. Connection-specific switching device connection circuits respond if a subscriber can use one type of device a query identifier (earthing of the partial

Be grouped together; can also just as easily deliver slave line loops). The relay Q transmits that several groups of connection-specific switching devices are identified by means of its contact q in the same way. Chen way to the control unit TS of the subscriber line

Each group of connection-specific switching circuits, such as the switching criterion for the switching state of the devices of a type, is assigned a type-specific control device subscriber line loop (subscriber line loop opened. For example, the subscriber line circuit is closed or closed). Details for the further processing TN1 to TNn are assigned a control device TS for the subscriber device which is connected to the subscriber line circuits on it. Likewise, e.g. the switching characteristics transmitted to the Internver control unit TS, white-link sets H1 to H2 a control device for Hs for ter are described in more detail below.

Interconnection rates assigned. The subscriber line circuits shown in FIG. 2 are also included

Control device LS for exchange connection sets and also one relay B. With the help of this relay

Control device WS for dialing reception devices 20 via its contact b call signal (ringing alternating current) to the partial view. subscriber station of a selected subscriber

In addition, there is also a control device ES for copying. This relay B is provided by the control device TS of the field setting devices El, E2 and E3. These subscriber line circuits can be controlled. For this purpose, switching matrix setting devices for the switching multiples can be designed as a bistable relay, each of which is assigned to a switching stage for its setting. It is also possible to provide a set of 25 or reset from the control device TS in each case only switching matrix setting devices provided for each coupling stage, one setting pulse or reset pulse.

2, so that a switching matrix setting device only holds each of the subscriber connection circuits according to FIG. 2 for controlling a specific part of the switching matrix, a relay C which is used to switch through one switching stage. The switching network setting speech path within the subscriber line circuit therefore only ever serves a part of the switching network, the number of subscriber lines K connected to it on the input side. Structure and mode of operation of device Tg and that with the output k of the subscriber line switching network, Coupling multiples and switching matrix setting circuit each connected switching matrix input of the coupling are known per se, for example by the German patent field K serves. The 1 762 055th contact c is provided for this speech path connection. The in Fig. 2 for reasons of simplicity

Instead of a switching matrix with a galvanically interconnected speech path that is only shown with one wire, the switching contacts can actually have a switching matrix that uses two wires. The relay C can be like the relay in which the through connections B are designed as a bistable polarized relay.

are only speech path connections and not galvanically. In FIG. 3, one of the connections shown in FIG.

through-connected current paths between the individual terminal-indicated dialing reception devices W1 to W2, men of a switching matrix input and the individual terminals 40. Each of these dialing reception devices contains - as indicated in FIG. 3 a switching network connected to it via the switching network - among other things. a relay D. This relay D is contained in the output (for further details, control device WS of the election reception devices can be found in the already mentioned technical book “Computer-controlled connection of an election reception device, averaging systems”). when connected to a calling party. over

FIGS. 2 to 5 show further details of the so-called contact d dial tone, which is shown for the calling connection-specific switching devices. 2 is a subscriber line circuit. It contains dialing information begins.

relays A, B and C. These relays are shown as an electromechanical form of dial pulse series or in the form of tone-frequency relays; however, they can just as well be given in election signs as such. As is known, the dialing indicator is designed as an electronically acting relay, so the receiver WE can accordingly be the receiver for Wahlim. The relays shown should be implemented as a series of pulses and / or as receivers for tone-frequency selection information for various functions of the subscriber line connections. Symbolize at the recipient's license plate number. Therefore, the representation is chosen so that it is WE a multi-wire line we connected, through which the actual conditions are greatly simplified. Such a received number of a multi-digit election information e.g. The subscriber line Tg connected to the subscriber line connection in FIG. 2 to the control unit WS of the dialing reception device d1 is shown as single-wire, wherever up to d2 is offered. The control WS of the election reception system actually stores two-wire devices in a manner known per se which stores the election information in association. The subscriber line connects the subscriber to the election reception facilities. The further processing circuit with the subscriber station. is described in detail below.

The input 60 connected to the subscriber line Tg meets a subscriber line circuit in an election reception device according to FIG. connected to the winding of a first digit of a multi-digit selection information from a relay A. This relay responds when the subscriber calls, the control device WS causes the merit loop in the subscriber station concerned of the dialing reception devices that the subscriber in question is closed. If the subscriber line loop in the partial dialing device, the relay D, whose contact d to the subscriber station is opened, the relay A drops out. With the help of the 65 was closed there, now back to its rest position contact a, relay A transmits the switching state of the partial returns; The contact d is thus opened and the dial tone that the subscriber line (subscriber line loop closed or until then opened to the subscriber station of the calling subscriber) has been sent to the control unit TS of the subscriber line circuit is switched off.

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4 shows an extract of an internal connection set in association with the respective external connection set. That tells. In Fig. 1, the internal connection sets with Hl to H2 tere processing of these switching indicators is still referred to as execution. An internal connection set according to FIG. 4 contains a licher described below.

Input he and an output ha. According to FIG. 1, each internal. In Fig. 6, a control device is shown. By doing

Connection set both with its input and with its 5 ranges of the representation given in FIG. 6, the output indicated in FIG. 1 are connected to a switching network output of the switching network for control devices for subscriber line K. Circuits (TS) are provided for each internal connection set, for dialing reception devices (WS), for the switching matrix K two switching matrix outputs. Internal connection sets (HS) and for exchange connection sets According to FIG. 4, each internal connection set contains a transmission (LS) structure. In the upper part of the ul given in Fig. 6. Furthermore, each internal connection set contains a relay io NEN representation is an input and output device EA G for speech path switching. The relay G is indicated by a control device. This input and output

If the internal connection set is activated, the device is used in a manner known per se to individually switch the speech path between the input and the output of the internal connection set assigned to the control device in question via its transmitter, using the contact g regularly. To scan the speech signal for its switching status. This sampling is carried out by relay G serving as bistable preferably cyclically. The control device TS can be designed for partially polarized relays. mer connection circuits e.g. so feels the switching states of the

The control connection contacts a and q are assigned to the internal connection sets for all subscriber line switching devices HS of the internal connection sets. These range from TN 1 to TNn. The control device thus determines whether the control device is used, among other things. to make in the internal connection sets 20 the contact a on the one hand and the contact q on the other hand in the zen to switch the speech path or to open or close the interrogation moment. Disconnected switched speech paths. Further details of contact a closed, this indicates that the relevant ones are described in more detail below. Subscriber line loop closed in the subscriber station

In Fig. 5 is one of the official connection sets LI to L2 after sen. Otherwise, the subscriber line loop is shown in more detail in FIG. 1. A subscriber station relating to an outside line is disconnected. If the contact is q a connection Lk, with which it is connected to one, the switching network output of the switching network K (output switching network multiple subscriber line loop for the purpose of delivering the query box of the switching stage K3) is connected in the relevant subscriber station. It also has a grounded label.

each exchange connection set has a connection Lt to which the connection-individual exchange connection line is connected one after the other cyclically. The speech path 30 duel switching devices, e.g. Subscriber connection circuit between the connection Lk and the connection Lt of an official, queried for their switching states. Corresponding set of criteria connection is made via the contact y of a relay Y and can be switched by the relevant control device with the help. This speech path is recorded in its switched-through input and output device and in the current state via a transmitter U2. The relay Y, which is used for individual speech path assignment to each connection-individual circuit, can be stored as a bistable, polarized switching device. A relay shown in FIG. 6 is used for this purpose. It is the memory SP indicated by the control device LS. This memory consists of one of the exchange connection sets LI to L2 (Fig. 1) controllable, i.e. Larger number of memory lines SPI, SP2, SP3, ... etc., each by an adjustment pulse or reset pulse, each of which can be switched or reset by a connection-specific switch. device, e.g. Subscriber connection circuit is assigned.

According to FIG. 5, the trunk connection sets also contain 40 a switching state determined during an interrogation process, in each case a relay P, which is also designed as a bistable polarization, not only in the relevant connection-specific relay. It is in the same way switching device, e.g. Subscriber connection circuit, stored individually by the control device LS of the exchange line sets, but this is controllable, like the relay Y. The relay P is used to transmit the switching state, in addition to the previous query of switching indicators, in particular for issuing dialing processes Switch state determined and stored compare over the output Lt of the exchange set. There is a difference between the circuitry for outgoing external connections that is determined and stored in the respective and the connected trunk connection during the previous query process. In the case of an incoming state and the newly determined switching state, exchange connections are used to transmit the signaling identifier, the start or the end of a switching identifier, with the aid of the relay P. 50 e.g. one from an interruption in the subscriber line

Furthermore, each exchange connection set contains a relay M. loop existing dialing pulse or a consultation code. This relay is used for recording outgoing exchange connections. In this way, the start and end of the switching of the registration number. When incoming office identifiers are recognized, which in turn are then assigned to the bindings, the relay M is used to receive the assignment-specific connection-specific switching device and / or dialing information which is stored via the 55. In this way, the impulses from the connected trunk line will also arrive. Occupancy dialing pulse series are collected and from this the numbers dialed by a license plate and / or dialing information are recognized via the calling subscriber. This technology contact m this relay of the control device LS of the official is already known per se. e.g. offered by DT-OS 2 602 197. connection sets. In addition, the control device shown in FIG. 6 contains, in addition to the connection set, an audio receiver HB, to which a contact input and output device EA and the memory clock hb belong. This is closed when a store-in device R1 and a store-out connection line an audible tone (dial tone, busy tone, ring tone and direction R2. With the aid of these devices, the one with the like) can be received via the exchange SP. With the help of the input and output device EA

The control device LS cyclically scans the switching status criteria, which are taken from the connection-specific external connection sets in order to obtain pending switching identifiers 6s switching devices, and stored in the memory SP (message identifier, occupancy identifier, dialing information; furthermore, switching tones stored in the memory can be recorded). The control device LS of the exchange rate criteria is fed to a processing unit V and stores the recorded switching indicators. Furthermore, connection-specific switching

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devices removed switching status criteria directly to the tion on the result of this search to the Steuerein processing unit V. This processing device TS, which is stored in this in association with the processing unit for the logical processing of binding-specific switching devices received via the relevant subscriber line circuit. Furthermore, the route search and setting device ES carries a switching indicator. This processing unit is a search for a path to find a free connection, that is, a program-controlled arithmetic unit. From there through the switching matrix K through. Details on this can be found in the results obtained for controlling the connection from the above-mentioned specialist book “Computer-controlled switching structures can be temporarily stored in the storage system SP”.

are, also in individual assignment to the Has the search and adjustment ES has a free connection-related switching devices. io receiving device, e.g. Wl, and a connection path which can be switched through the head unit K output by the processing unit V can also be made directly to the input and output device, so they give corresponding switch-through commands to the device EA. Furthermore, switching identifiers stored for switching input and output switching and the selected dialing device EA can be transmitted in the memory SP in switching matrix setting devices E1 to E3, which now assign the assignment to the connection-specific switching device. Switch through the input and output. Now the subscriber station of the call device EA controls the relays in the relevant ones depending on the switching criteria assigned to them by a free dialing device.

individual switching devices, e.g. Relays B and C The control device ST for subscriber line switching

in Fig. 2. It gives setting impulses or Rückstellim- gen now transmits information to the control device pulse, whereby each of these relays in the working position or in the WS for election reception devices; this information gives

Rest can be brought. which polling institution has recently started with the

As is also to be noted, each subscriber connection circuit of the calling subscriber memory line, e.g. SPI, of the memory SP shown in FIG. 6 has been connected from mers. The control device WS stores a series of storage units, e.g. SZ11, SZ12, SZ13 etc., 25 saves this information in association with the relevant one, each of which is designed to store 1 bit. This election reception facility. On the basis of this information, storage units are assigned specific storage tasks, the control device WS also assigns an individual setting. This includes also the address of the aisle in the relevant election reception facility. The respective individual device, to which the relevant device causes the relay D (FIG. 3) to be activated, is assigned to the memory cell. Certain memory units 30, the contact of which now closes and dial tone for the calls are provided for storing certain switching criteria. turns on the subscriber. This dial tone is thus described via the connection to the establishment of an internal connection and the relevant part. If a subscriber lifts at his subscriber station, the subscriber connection circuit to the subscriber station of the calling e.g. Tl, the handset off, is broadcast in a subscriber known per se. The reception of the dial tone in the manner the subscriber line loop closed. In the 35 subscriber station, the subscriber in question indicates that the assigned subscriber line circuit (FIG. 2) speaks that he can begin to provide dialing information.

Relay A on, whose contact a is thereby closed. When an election information consists of a plurality of digits

next polling operation of the control device TS remotely recognizes. Each digit can be followed by a series of

this that in the relevant subscriber connection circuit the dialing pulses (dialing pulse series) or as a sound frequency

contact a has been closed. From this, the 40 th election indicator is shown. Tone Frequency Choice

Control device TS for subscriber line circuits that can also be delivered in coded form by the subscriber line circuit in question with a free dialing code from a combination of several

Election reception facility, e.g. Wl, is to be connected. simultaneous or consecutive tone frequency characters

As can now be seen from FIG. 1, the control devices are in place.

lines TS to LS, namely their individual processing units. The dialing indicator receiver shown in FIG.

via a common information line BL, dialing frequency dialing frequencies and offers this in each case

the in connection. This information line can be seized in coded form by each caught dialing code via the line of the control devices TS to LS and can be used by the control device WS for dialing reception devices. The exchange of data via this information. If the caller's participant

Management takes only a very short amount of time in the above-mentioned dialing indicator, however, by dialing pulse series, so can

Claim, so that one after the other a large number of data or dialing code receivers WE in FIG

Transmission processes in a relatively short time that he can evaluate one series of voting pulses as a whole. and a corresponding number of the control device WS for

After the control device offers TS for subscriber dialing devices; this dialing code

circuitry has recognized that the receiver connected to a particular subscriber WE can also be designed in such a way that subscriber connection circuit to subscribers connected to it when receiving dialing pulse series each individual subscriber subscriber station the subscriber line loop closed pulse of control device WS for dialing reception device.

sen, transmits this control device TS offers information. However, it is also possible to

Via the information line BL to the route search and setting receiver WE as well as the relay A in FIG. 2 as a device ES (further above also to be designed as a “control unit for coupling 60 simple loop relays, and in each case only referred to the field setting devices”). This information gives loop status (subscriber line loop closed or

that switching matrix input of switching matrix K to which is open) of control device WS for dialing indicator temperature

to offer the relevant subscriber line connection connected interception devices and the dial pulse integration

is; this information also indicates that this subscriber number and dialing code integration in this tax

to complete the final circuit with a free selector to 65 direction.

connect is. The route search and setting device ES carries out. If the search process for establishing the internal connection mentioned above for the selection of a free dialing speed dialing information has arrived completely, the trapping device carries out and provides a corresponding information in the control device WS for dialing reception

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directions in assignment to the relevant election receiver U1. It is possible to store DC voltage before feeding the sub-device (Wl). In one of the named user microphones of both the calling subscriber and

Control devices are also stored, by means of which the called subscriber in the internal connection set in the case of a subscriber line connection is used to switch on the relevant dialing receiver U1. It is also possible to connect via the switching matrix K. s loaned, the connection of the participant microphone

The received dialing information indicates which wide-range voltage rather than in the internal connection sets, rather, in ren subscribers the called calling subscriber selected to make the subscriber connection circuits.

Has. With the help of the dialing information, the subscriber is activated.

the final circuit of the subscriber who is known to be the caller or the called subscriber is selected by dropping the dialed and connected to the calling subscriber. Relay A in the subscriber connection circuit of the relevant subscriber. For this purpose, with the help of the subscriber's control device, the control device TS for subscriber TS for subscriber line circuits is first checked whether the subject line circuits are recognized. This control device has until the subscriber line circuit of the calling subscriber there is free for both subscriber line circuits. If this is the case, the call status is saved using the control device. If bil-HS triggers a connection for internal connection sets, it detects a corresponding information that it selected to the tax rate. Then the HS is used for the route search and setup device for internal connection sets. In this control device ES, both a connection path via the head control device is stored, with which subscriber panel field from the subscriber line circuit of the calling end circuit that subscriber line circuit via subscriber to an input, e.g. hie, the selected, the switching matrix K is connected, in which the

free internal connection set, e.g. Hl, as well as a free switching initiation (20), the connection path has dropped via the switching matrix from the output, e.g. h 1 a, relay A). The control device HS for this internal connection set to the subscriber connection set now transmits information about the control circuit of the subscriber to be called, and sets up TS for subscriber connection circuits, which switches. Then, with the help of the control device TS, this is initiated, not only the subscriber line switching switching code to the subscriber line circuit of the device in which the switching code for initiating the connection is released, by means of which its relay has occurred, but also those with this subscriber B is triggered intermittently. With the help of the final circuit via the switching matrix and the internal connection contact b, callsign is sent to the subscriber station of the subscriber calling the other subscriber line circuit connected to the set of equipment. trigger, i.e. to transfer to their rest state. - The

As soon as the calling subscriber answers and, at his 30 control device HS, the relevant internal subscriber station also closes the subscriber line loop, triggers connection set by releasing relay G in it, relay A speaks in his subscriber connection circuit. Furthermore, the control device HS transmits for the internal connection - (Fig. 2). The control device TS then recognizes, in the next sentence, information about the route search and setting-up query process that the two switching network connectees used in the direction ES in the call state, on the basis of which the partial connection triggered for the existing subscriber line circuit which was previously established has reported. Thereupon will be triggered over the control devices. The previously assigned coupling TS for subscriber line circuits causes points in the respective switching multiples and the intermediate lines occupied until the call sign is sent to the subscriber station to be released again, and the called subscriber is ended again. The relay B (FIG. 2) is assigned in one of the path search and setting devices ES - that is to say it drops out and no longer responds. Instead of the route search memory, the parts TS of the switching matrix in the relevant subscriber line circuit K (crosspoints and intermediate lines) which have become free again as a result of the connections which have been made, the control device TS for triggering the subscriber line connection triggering again as free the relay C for addressing, as a result of which the input this marked. In further route searches, subscriber line circuits are connected to their output and these parts of the switching matrix K are used to produce new connections. In the same way, 45 fertilizers were available again at an earlier point in time.

the contact c in the subscriber line circuit of the call- In the previous description, one was closed for the inventor of the subscriber. During the period from the beginning of the essential connection to simplify the process until the end of the transmission of the call signal to the called description initially ignored. When the subscriber is being processed, processes that are described for the calling subscriber are given a tone, it is necessary to send each. The activation of the ringing tone for the calling party - to determine which of the various participants in the production takes place in the subscriber connection circuit of the call controller - the participant involved in the same connection, in a similar manner to the connection of the directions TS to LS in the different consecutive call signal, e.g. with the help of relay B in the participant phases of production, monitoring and triggering

final circuit of the called subscriber. It is just as well that connection is leading. As is also possible in connection with the connection of the ring tone in the manner described 55 for establishing an internal connection in the relevant internal connection set, a total of three of the control devices TS are responsible for this. to LS involved, namely the control devices TS for partial

If the called subscriber has answered, then subscriber connection circuits, the control device WS for the control device TS for subscriber connection circuits, transmit dialing reception devices and the control device HS for information to the control device HS, to 60 internal connection sets. The memory SP (Fig. 6) of this control reason of which this control device stores data with the devices as well as the already described subscriber line circuit of the calling subscriber as data in association with each of the connection-specific also with the subscriber line circuit of the called sub-switching devices about the connected internal connection set, e.g. Hl, one which the control device issues during the monitoring command, by means of which the relay G (FIG. 4) is activated or triggered in this internation 65 or tripping via the relevant connection-connection set. With the help of the individual switching device running connection contact g, the connection is now switched through. is the leading one. During the establishment of the connection, the connection which is switched through runs via the transmission from the subscriber line circuit of a calling party

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As soon as the dialing information has completely arrived in the relevant control device TS for subscriber line connections and dialing license plate receiving device and from the route-searching and setting devices ES is involved in the handling of the control device WS for dialing code receiving the switching operations. Until the activation of a direction on the route search and setting device WE free selected reception device is initially the s is transmitted, this transfers the data designating the subscriber line circuit control device TS for subscriber line circuits for the selected subscriber to the rend. Accordingly, in the memory line of the memory SP (FIG. 6) assigned to this subscriber line switching control device WS for dialing indicator reception device (FIG. 6), the instructions are given. This now transmits to the control device HS for control device TS for subscriber line circuits internal connection sets which the subscriber line circuit

stored by means of a suitable switching identifier that for the calling and called subscriber denote the data being set up via this subscriber line circuit and a command that a free internal connection is the leading control device TS. set, and finally an information signal for it, after the connection of the dialing reception device to the s for the connection to be made via this internal connection set - the subscriber line connection of the calling subscriber, the control device HS is to take over the further control - the control device WS is to take over dialing reception . After selecting a free internal connection direction, the further guidance in establishing the connection. The control device HS stores the assignment record for this purpose. The route search and setting device WE transmits the aforementioned information to the latter. Furthermore, it first transmits information to the control device TS via the route search and setting device WE, the data about the switching network connections to be connected to one another when a free dialing code has been connected. The by-receiving device to the relevant subscriber connection 20 the connections of the internal connection set are individually with circuitry and at the same time transmits the data to be used to identify the two subscriber connection circuits referred to as these dialing codes. Then tie up. The route search and setting device WE transmits the route searches required by the control device TS to the control device and switches the WS information about which subscriber desired connections through the switching matrix K. Now the newly assigned dialing code receiver 25 is the subscriber line circuit of the calling subscriber device has been connected, and furthermore that when the relevant internal connection set is received and the connection started, the control input and its output are now connected to the subscriber line circuit of the direction WS instead of the control device TS the leadership of the selected participant.

should take over. In the assigned dialing reception device, after selection of a free set of internal connections, the corresponding memory line of the memory of the control device 30 is then stored in association with this, which is stored in the control device HS for dialing reception devices, that for the selected internal connection, the data is saved for the connection being set up with the help of this dialing reception device, this control device being set up, the control device WS is the leading one. In addition, the leading is now assigned to the relevant for election reception facilities. the internal connection set is stored, with which two, in addition, in the memory line corresponding to the relevant subscriber-receiving device, the relevant internal connection is connected on the basis of the transmitted set of connections, i.e. Thus, if necessary, after processing the information, the switching operations described regarding the subscriber line relating to the circuit via which the dialing device in question is connected via the switching matrix K are stored. The control device WS for the connection that is required for dial-up reception devices therefore receives from the control device .40 the control device HS for internal connection that now carries an information position from the connection device ST at this stage for the connection connection, which specifies which dialing device the device uses controlled rates. Information is transmitted to the control device TS for subscriber subscriber connection circuits of the calling subscriber connection circuits, which is connected via the switching matrix, and because of this in the subscriber connection circuit for establishing the connection, at which the 45 calling subscribers now do this Call signal is switched on. If control device WS reports for dialing reception devices and for the called subscriber, this is - as control device TS for subscriber connection circuits already described - in control device TS for subscriber

are involved, the control device WS for dialing circuits is now recognized. Due to one of the tax receipt facilities is the leading one. This information is in the direction HS previously communicated to the control device TS and is also stored in the memory of the control device TS for some way in association with the relevant subscriber connection switch subscriber connection circuits. In association with the stored information, which internal connection set of subscriber line connection of the calling part concerned was connected to this subscriber line connection, and in this stage of the connection establishment, the subscriber therefore stores that which subscriber line is being set up via which subscriber line connection with which dialing reception device this part-located connection is not the control device TS for the subscriber line connection of the calling subscriber is connected and also not the control units, and that in this connection establishment the control direction WS for dialing reception devices but the device WS for dialing reception devices is now the control device HS for internal connection sets the leading control device. is information from the control device TS to

During the recording of the dialing information, transmitted by the control device HS, which indicates that the calling subscriber remains the first to have reported the calling device relating to the control device WS 60. The control for election reception devices, the leading control device HS for internal connection sets, now provides a device for this connection establishment. This control device information to the control device TS for connection switching device now stores, one after the other, the conditions from the calling subscriber, on the basis of which this control device transmits the described information and passes it on to the evaluation of the level call cut-off in the subscriber connection circuit of the route search and setting device ES . It is recognized here that the subscriber called and the connection through in are identified in the fact that the dialing information provided by the calling subscriber to the two subscriber connection circuits involved is such for the manufacturer. In addition, the control device HS takes action for internal connection of an internal connection. binding sets in the relevant connection circuit

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device with the help of the relay G (Fig. 4). Leadership from the beginning and until the end of the sales

When the connection is triggered on the part of one of the parties involved and, in addition, until the connec- tion subscriber has completed, a corresponding switching indicator occurs (keep triggering. In the other case, production of relay A - Fig. 2) in the subscriber concerned arriving The connection to the control device would be open. The control device ST for subscriber line LS for exchange connection sets recognizes the leading role of connection circuits and recognizes this switching identifier and the beginning and end of the connection and also takes from the memory line of the memory assigned to the subscriber connection circuit concerned until the triggering processes have been completed SP (Fig. 6) that ten.

it itself is not the leader in terms of the number of participants. Furthermore, there is also the possibility that the connection running with the meran connection circuit. This control device which in each case leads the establishment of a connection, derives from this subscriber line circuit that which is the last line of memory corresponding to the connection in question that is involved in the establishment of the connection in question. Thus, in the connection described, the control device HS is the leading one, and the functional example of establishing an internal connection also takes the internal connection set with which this partial case takes place. First of all, the control device TS is connected to the leading slave connection circuit. The control device 15 then takes over the control device WS and the device TS for subscriber line circuits now transmits one to the control device HS. In addition, the information is also given to the control device HS for internal connection possibility that, in the case of a connection establishment record, which indicates that the control device leading with the relevant internal information is the one which connection record is connected via the switching matrix. as the least loaded at the moment in the relevant connection circuit that is involved in the connection initiation. This would result in an opti-switching indicator. Because of this maier compensation with regard to the traffic load among the information, the control device HS takes the connection to different control devices to be achieved. Trigger before. For this purpose, it transmits corresponding information. It can be provided that the degree of load on the control device TS for subscriber line switching of the control devices depends on the degree of filling of the voltages. This information specifies which subscriber memory (working memory) of each of the control devices involved in the manufacture of the connection termination circuits to be triggered by its control device TS, in which are. In addition, the control device HS for internally, in association with the connection-specific switching device connection sets, transmits information to the route seekers and units, the dialing indicators and the switching indicators, setting device ES, on the basis of which these control devices are stored.

The relevant connection paths in the switching matrix K, which it triggers in 30. Furthermore, it is pointed out that the memory stored in a connection memory triggers and the control device-relevant parts of the switching matrix (connection points and / or device is the one in a Connecting train on the wide intermediate lines) is again in its route search memory as the most free in the middle. In the case of making an internver marks. Under this condition, the tax

At this point it should also be added that in the case of device HS the leading one during the monitoring and the existence of several species-specific control devices, i.e. e.g. Triggering a connection.

of several control devices for subscriber connection scarf- A further possibility provides that the

the respective leading control device for establishing or establishing a connection.

Trigger the relevant function. So there are a number of, in which the greatest number of dialing code connections involve two subscriber line circuits, which can arrive 40 or are to be expected or are developed for delivery to two different control devices for subscriber line-specific switching devices, so assigned These two occur. This also applies to the example of manufacture described

Control devices for subscriber line connections with an internal connection. During the reception of the dialing - the establishment of the connection and the initiation of the connection in information, the control device WS functions in a manner appropriate for dialing. 45 catching facilities the leading. After recording the complete

It is possible that the dialing information that is available when a connection is established then changes the routing of control-leading control devices generally through a hierarchical device WS to control device HS. The white is similar. chich order is established among the control devices. tere possibility that when a connection is established, since the involvement of the various control device TS up to the respective leading control device is the one in which LS (FIG. 1) in the establishment, monitoring and triggering 50 selection indicators of a large number of different types of connection with regard to the successive can arrive or be developed for delivery to connection-specific different phases of connection establishment and connection switching devices. This applies in particular to the triggering of changes from phase to phase. It is determined by a hierarchical order for external connections in connection with inquiry requests which of these control bonds.

devices should be the leading, if of these 55 As already described, there is also the possibility of controlling certain devices in each case in such a way that when a connection is established, more than the connection establishment phase are involved in succession. In which a single control device is the leader. In contrast to the above-described establishment of an internal connection, there is the already mentioned other possibility that the e.g. initially only the control device TS involved. Are leading control units

Thereafter, the control devices TS and WS are involved, so that the person who is the first to take the lead in the relevant control device WS receives control. Are involved in making connections.

If the control devices TS, WS and HS are involved, then the manufacture of an outgoing control device HS receives the leading role. External connection (exchange connection) described. After sales

It is also possible to provide that the control device leading in each case when the subscriber station of a calling subscriber is connected to the establishment of the connection selects the one from a free dialing set, which, in the manner already described, is the first to take place at the connection establishment concerned calling subscriber is involved in the outside line access code and lung. In the case of the described establishment of the further digits of the call number of the desired internal connection, the control device TS would then be the subscriber who is only on an outside line

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is achievable. The outside line code and the other digits dialed by the call contact HE of the audio receiver of the control device LS the subscriber are already in the for outside line records. This control device recognizes the described manner with the aid of an election reception device - the presence of the outside dialing tone at the office concerned in the control device WS for the set of election reception connections. This is done in the same way as the facilities are recorded and cached. The recognition and recording of other switching indicators and received dialing information are likewise recognized in the way of looking for and setting up the control device LS for exchange rate sets already described, which is offered via the outgoing busy exchange line ES. This device recognizes from the device that there is a dialing tone, so it gives, based on the assignment to the outside line code, that an outgoing external connection must be made to the data stored for the relevant external connection set. The route search and setting device ES selects information to which a free exchange set, e.g. LI executes and executes a rende control device WS for election reception devices route search for connection through the coupling, whereby this is informed that on that official field. Then the subscriber line circuit is e.g. connection set dial tone is present, which with the same subscriber TN1, the calling subscriber, e.g. Tl, which is connected via the coupler connection circuit, like the dialing field in question, already with a free dialing reception device, e.g. Wl, 15 receiving device. Now, successively one after the other is connected, in addition to the selected free office who uses the connection set associated with this election reception device, e.g. LI, connected. At this stage of the stored digits of the dialing information from the establishment of the control connection, the control device WS for dialing direction WS for dialing reception devices is transmitted to the control receiving devices the leading control device for the direction LS for exchange line sets. Outgoing external connection currently being set up. The route 20 the address of the relevant exchange set with the search and one-part device ES transmits information. The control device LS for exchange rate sets to the control device WS for dialing reception equipment sends these digits one after the other via the concerned one and thereby informs it of the exchange rate for which the exchange rate is being issued. This is done with the help of the relay P connected through the switching matrix K in FIG. 5.

has been. The route search and setting device 25 finally becomes the desired subscriber via the

IT ends its activity. Exchange connection rate and the connected exchange

The subscriber station of the calling subscriber is reached via the transmission line, so that due to a subscriber connection circuit via her subscriber connection circuit, this is now connected both with a built-in connection backwards to the dialing code dialing reception device and with an outside line or on the basis of the call when the desired subdivision set is called. This connection is therefore a received ringing tone that has been received on the connection branched up to that point. The branching point lies in the dialing device free-first coupling stage K1 involved in the production of the switching network K. switches. The message identifier or the ringing tone is initially connected to the relay M or the audio receiver HE in FIG. 5 control device WS during the further connection establishment for this connection. The control device LS recognizes the control device carrying the message structure. The control device WS for dialing transmits a corresponding information mark or a request from Freiton in the relevant item and, based on the data stored in assignment of receiving devices, transmits a connection record to the control device LS for the office connection record for this exchange connection record. The control device WS for dialing reception SP (FIG. 6) of the control device LS for exchange connection sets 40 directions in a position of the relevant occupied office information to the memory line of the memory corresponding to the stage of the connection set. This information includes a reference to is saved that for the via the office concerned the relevant election reception facility. The control device connection set under construction connection the control WS for election reception devices triggers the device WS for election reception devices up to that point, which controls the assigned election reception device. It also transmits. In addition, information is stored in the same memory line to the route-searching and dividing device ES, with which dialing-receiving device the subscriber 45 is connected, which previously connected the relevant subscriber terminating circuit, with the aforementioned terminating circuit and the relevant dialing receiving device. connected line set is connected. In which the existing switching network connection is triggered. Furthermore, the corresponding control device WS for the control device WS of the memory SP of the control device WS for information transmits information to the control device LS, whereby control equipment WS is stored, with which the subscriber line circuit of the connection set is stored in its memory in association with the relevant exchange line set is saved that is connected for the subscriber using this outside call. connection set existing connection the control device There is LS for exchange connection sets which is the leading one via the outgoing line connection set. Finally there is now an audio connection; However, the dialing codes given by the calling subscriber in the memory SP (FIG. 6) of the control device WS for dialers cannot be controlled and the trunk line corresponding to the outgoing dialing station assigned to the dialing lines occupied up to that point can be accessed via 55 receiving devices and the seized trunk connection line can arrive. This dialing code - all information in it is deleted.

Rather, characters are - as already mentioned - in the memory. Furthermore, it is possible to establish inquiry connections of the control device WS for election reception devices in. The switching indicator to initiate the manufac

Assignment to the relevant dialing reception device 60 of a consultation connection is made by the subscriber station.

saved. tion of the participant concerned in the form of an earth pulse

In the outgoing trunk line set, the is issued by that which is received in the subscriber line circuit according to FIG. 2 of the public switching center via which outgoing with the aid of the relay Q. At this point, seized dial-up tone transmitted dial-up line must be retrieved, that when the line connection is established and when it starts. For this purpose, an audio receiver HE is used, which, like the described change of guidance from the control relay M (FIG. 5), is connected to the outgoing line trunk connection WS for dialing reception devices to the control input line. The exchange connection set LS for exchange connection sets which in the control device sets up a character corresponding to the audible signal via a device TS for subscriber line circuits

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for the subscriber connection circuit concerned, the controlled data are now stored instead of the control device LS. Instead of the address of the subject facility WS is the leading one. Furthermore, the control device notifies the receiving device and, instead of the information LS, the control device TS with reference to the fact that the control device WS, with the subscriber line circuit connected via this subscriber, communicates with which dial-up line connection the leading 5 receiving device the subscriber line circuit is now, more is connected in association with this subscriber line circuit. If the inquiry connection is then switched through in the memory SP of the control device TS for subscribers to an internal connection set (stored as an internal connection circuit that for the connection via this subscriber) and the routing from the control internal connection circuit is now directed towards WS hand over the control device HS, so the control device LS carries the corresponding information for exchange connection sets which the control device WS carries; Furthermore, in association with the aforementioned participation, the change of control also connects to the control device in the memory of the control device TS TS. This is done by specifying the subscriber concerned, which exchange connection record with this subscriber line circuit. Furthermore, the control device transmits a connection circuit. WS to the control device TS information about

Now in the relevant subscriber line circuit 15, via which of the internal connection sets does the inquiry call

the switching indicator for initiating a query connection runs. In association with the one for switching through the dung, the internal connection set used in association with this internal subscriber connection is used in the mer connection circuit in the control device TS to store the memory of the control device HS, that is, in this phase of the th data of this one, the switching indicator for single-line connection is the leading one for this connection,

Corresponding information 20 is stored in the direction of a query connection, to which subscriber line circuit the internal connection set relating to the control device LS for exchange connection sets is connected.

carry, which the relevant trunk set now meets in the subscriber line circuit of the subscriber-designating data are transmitted with. The taxpayer who has established the inquiry connection then transmits the direction LS to the route search and setting switching code, through which inquiry connections device ES provides information that the relevant parts are both initiated and terminated, speaks in Relay Q to the subscriber connection circuit while disconnecting the connection. between it and the relevant trunk set with This switching indicator is to be connected by the control device TS to a free dialing device. Is included for subscriber line connections. On the basis of this connection establishment in the manner already described in association with the relevant subscriber connection type, the path search and setting device circuit 30 data in the control device TS informs the control device LS which dialing reception via the direction connected to the subscriber connection circuit with the relevant subscriber line connection internal connection set and because of this has been connected together via the switching matrix. Thereupon there is also a stored reference to the control device LS which carries information to the control consultation connection HS becomes device WS and informs it which dialing reception device 35 provides information from the control device TS to the control device with which subscriber line circuit to the manufacturing direction HS, which informs the latter that a consultation call has been connected. Furthermore, the consultation call must be ended again. In this, the control device WS notifies that the latter has the routing information and also an indication of the particular part of the quotation in the further connection. Included in the interconnection of that subscriber is the fact that it was originally a query connection 40 that established the query connection. By means of action, the information is transmitted in the control device WS in association with the information received by the control device TS from the control device TS to the control device HS with the aid of the route search and via which exchange rate set the corresponding setting device ES triggers the inquiry connection and the exchange connection has been built up. In the control unit, the original exchange connection is re-established by the direction WS for dialing reception devices, so the connection between the subscriber in question, in association with the dialing reception device in question, and the trunk connection in question, with which subscriber connection circuit this is switched through again, is stored. This causes the control device dialing reception device to be connected, furthermore that the device HS is transmitted by corresponding information which it concerns to the inquiry connection, and that the control route search and setting device ES transmits. Furthermore, the superordinate device WS is the leading one and finally, via which the control device HS carries information to the tax exchange connection set the corresponding exchange connection device LS, by which it informs the latter that this now exists. again with regard to the line connection

The dialing tone set running trunk connection becomes the leading control

sent out to the participant concerned. This represents facility. The control device HS also transmits

a query connection in the same way as a 55 also sends information to the control device TS,

Internal connection. by which it informs them of which exchange rate

If the subscriber concerned now connects after the subscriber connection circuit concerned has been established,

Query connection is again the switching indicator for the one and that for the subscriber connection

Initiation of a query connection, the connection running through the control device LS is now

Query connection triggered and the original official 60 is the leading control facility.

Reconnected. In deviation from the one described above, it is also

At this point, it is necessary to make up for the fact that when the

Query connection, the control device LS for official exchange of query connections instead of via the participant

binding sets based on the assignment to the relevant mer connection circuits rather via corresponding switching

Data stored in the external connection set also contains information in the external connection sets and internal connection

mation transmits to the control device TS through which records. In this case, the described run this is communicated that for the relevant switching operations take place in a correspondingly modified manner.

Inquiry connection to be set up in the previous description, it was explained that a

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Indicative signal is transmitted from a control device leading to a certain stage of the establishment of a connection to a control device which from then on becomes the leading one for this connection instead of the former control device. Accordingly, the control is transferred from one control device to another control device. However, it is equally possible to use the advisory signal in such a way that a control device of the other takes control by transmitting it. It is also possible to apply both principles alternatively.

Furthermore, it should also be pointed out the possibility of providing switching places that are connected with the official

12

Connection sets serve to establish a connection with the participation of the operator. In this case, a further control device can be provided, which is used to handle the control processes when the connection is established with the participation of the operator.

Furthermore, the possibility of realizing two or more of the control devices as a single control device is also mentioned, which in cyclically changing operation temporarily controls the control functions for a group of individual switching devices, then for another group, etc. and then again for executes the former group, etc.

G

2 sheets of drawings

Claims (11)

631 305 PATENT CLAIMS 1.Circuit arrangement for telecommunication switching systems, in particular telephone switching systems, in which connection-specific switching devices of several types are equipped with receiving switching means and / or transmission switching means for dialing indicia transmitted via connection paths, and in which connection-specific switching devices of the different types are assigned common and specific switching devices of one type to common control devices and in which the control devices receive dialing codes received in the switching devices and feed them for further processing, and in which the control devices store switching codes which serve to establish the connection in association with the connection-specific switching devices, and in which switching devices in each case produce more than connections of a kind are involved, characterized in that when making a connection among these n switching devices, type-specific assigned control devices, a control device is defined as the one leading for this connection establishment, that in the control devices involved, in association with the connection-specific switching devices involved in the respective connection, information signals are stored which indicate which of these control devices when establishing the connection in question as the under is responsible for the further processing of the dialing codes, which are carried out with the help of the connection-specific switching devices involved in the connection in question and, for this purpose, are transferred directly and / or via the relevant non-leading control devices to the connection-specific switching devices involved in the connection, and that in the connection-specific switching devices involved in the establishment of a connection and received to the assigned control device The forwarded dialing indicators are transmitted from the non-leading control devices to the leading control device on the basis of the stored information signals, specifying the connection-specific switching device or devices involved in the relevant connection and controlled by this leading control device. 2. Circuit arrangement according to claim 1, characterized in that the control device leading in each case when a connection is established is generally determined by a hierarchical order among the control devices. 3. Circuit arrangement according to claim 1, characterized in that the control device leading in each case when establishing a connection is the one which is the first to be involved in the connection in question. 4. Circuit arrangement according to claim 1, characterized in that the control device leading in each case when establishing a connection is the one which is the last to be involved in the connection in question. 5. Circuit arrangement according to claim 1, characterized in that switching means, which determine the least loaded control device, mark this control device as the leading one. 6. Circuit arrangement according to claim 5, characterized in that the switching means which determine the least loaded control device in each case measure the degree of filling of the working memory of each of the control devices, in which the selection indicators and the switching indicators are stored in association with the connection-specific switching devices. 7. Circuit arrangement according to claim 1, characterized in that the control device leading in each case when establishing a connection is the one which lies furthest in the middle in a connecting train. 8. Circuit arrangement according to claim 1, characterized in that the control device leading in each case when establishing a connection is the one with the most extensive dialing information exchange. 9. Circuit arrangement according to claim 1, characterized in that the control device leading in each case when establishing a connection is the one with the most varied choice-identifier information exchange. 10. The circuit arrangement as claimed in claim 1, characterized in that when connecting, more than one control device is in succession leading. 11. Circuit arrangement according to claim 10, characterized in that when establishing a connection via a connection-specific switching device, the control device of which is first the leading, after occupancy of a further connection-specific switching device, the control device of which becomes the leading one, while the control device leading up to that point does not become the leading one .