DE2311829C3 - Method for a telephone exchange with subscriber stations developed as exchanges - Google Patents

Description

5. Circuit cancellation for the execution of the 55 sizing of waiting calls to be offered. Parallel signa method according to address 1, whereby the identification of other places may not indicate that the connection line is transferred. Only when the called workstation is in position and ready to receive the waiting call for the purpose of passing on dialing codes, a target memory (ZS), an initial response, should the connection be established by means of a special switching memory (VS), a priority memory 60 measure are brought (PS) and a transmission switching means having the.

Register (Reg) is connected. The object of the present invention is

in that, in the case of connection traffic between different

—_— to ensure in a simple manner that

65 unnecessary connecting lines for waiting calls from the same future call partner

The invention relates to a method for further traffic to be withdrawn. Establishing a connection in a telephone company - This is achieved by

^[ l.

an address in a, target or origin privileged or mainfctelle thought, namely

sr a subscriber station the memory contents are concerned with the interrogation set of the so-

4-way destination · and origin memory compared to each other, while the second set

cbsn and if the auxiliary interrogation equipment matches the second, the guard

Snacbennfcuts this as a ParaUelverbindungswunsch 5 ter assigned officials of the subscriber station

two participants is recognized and then available. Each participant position is therefore one

Existing facility suspensions (privileges) are permanently assigned to so-called air traffic control center,

of the systems to which the calling and the called Depending on which interrogation set a polling

TeflnumbersteDe belong, are compared and only outgoing or an incoming connection.

the connection is established, which comes from a 10 stand is one for the respective interrogation

to carry out specific switching measures at the subscriber station with the higher system rating,

priority was initiated. whereby then the assignment of the common

As a result, besides waiting switching means is already pending for the required time, i.e. for the call whose origin is not recognizable, and outgoing dialing, for example, until the end of the election when the outgoing connection is established to wait for identification, which prevents the election evaluator of the Steuden Teönnehmerstelle from two Verbin- erteües of the subscriber station is given, manure lines for waiting connections for a longer period of time Telephone traffic at air traffic control systems can be used. It is characterized by a high occupancy rate, that the calling subscriber station has the ability and very short conversation times. The system with the higher priority is the connection than the time from the beginning of the occupancy until the message is almost outgoing connection. This always means longer than the talk time. The fact that this subscriber station after switching through the subscriber stations does not correspond to that of the connection as the first to speak, the normal telephone subscriber can be treated in known, if it is assumed that the off-branch exchange systems, but approximately that of the question sets of the subscriber stations with speech 25 highly loaded transmission lines. The security officers and sten are working. Auxiliary officers of the air traffic control participant units

According to a further embodiment of the invention must at any time with each other participant part

the connection with the higher system priority of the same system or another system of the

did build up in the reverse direction. Switching system can connect.

As a result, the air traffic control stations of a system are monitored in a simple manner on the device fenen subscriber point of the comparison of the priorities a certain, fixed airspace, which is carried out, so that also produced at the same time is divided into areas, each by one Connections are also recorded. The liaison air traffic control group are monitored. All In such a case, the structure is automatically set up - civil servants must work together on this directs The contents of the original memory will direct for 35 area overflying aircraft. Everyone used to establish the connection. Guard leader must therefore constantly be with each other

According to a further embodiment of the invention, watchman for the purpose of consultations and cases of

will be able to contact the calling subscriber station of the decision making. this

The waiting time introduced with the lower priority also explains the high occupancy frequency and the

was deleted 40 Shortness of call times in telephone traffic

In the drawing are those for the understanding of the air traffic control service.

Finding necessary details are shown. As already mentioned above, the subscribers are assigned to a telephone exchange there, both dialing keys and direct call systems, for example for the air traffic control service. You can use the direct call buttons which is part of a switching system that consists of 45 certain subscriber stations certain other parts of several such systems. Call this subscriber station in destination dialing. In this direct telephone exchange system, all subscriber call buttons are signal lamps for direct signaling points as switching stations. an incoming call from one of these lam-

AHe subscriber stations are equipped with interrogators assigned, calling subscriber telj ^ keys, occupancy keys, hold keys, conference buttons. Such an assignment per subscriber station Most, emergency buttons, with a dial pad, with direct can in the appropriate, dedicated call buttons as well as with the appropriate call and computer easily, for example by plugging in Monitoring lamps and at least with a cut-off of rectifiers, changed in a patch panel set of questions. A specialty are the participants. However, all other calls (without direct calls) are each made with two interrogation sets 55 with the aid of the interrogation sets equipped for both. Each such interrogation set is also initiated for each door shared dialing keypad or the shared own incoming and outgoing number switch for copying, pelfeld-leading line, so that three incoming calls (without separate connections, incoming and outgoing 60 direct calls) can be built up and made using appropriate call lamps. will show. These waiting calls can be from

These interrogation sets are, however, on the part of each set of the subscriber station through a

take the keypad, the direct call keys, query the corresponding switching measure,

the call and monitoring lamps together The respective connection status is always optical

assigned. Only the respective query buttons, 65 and / or acoustically displayed. In addition, in

End keys, conference keys and assignment keys for each direct call key by lighting up a lamp

are available separately for each interrogation set and calling direct call subscribers up to the existing one

effective. One of the two query sets is to be displayed as a number of direct call keys.

The coupling network available for each system is symmetrical, assigned, must be neutral, three-tiered / 1, B, C for each subscriber station and corresponds to an addition to the pel network then for all interrogation sets with the same traffic offer for all original storage units provided jointly for each interrogator . a target memory, for example ZSIl, is provided

For the following explanations it should be assumed 5, in which the address of the selected, that three call lamps and the called subscriber station are stored for each workstation, ten direct call buttons with two, interrogation sets before- This ensures that, as the interrogation sets are seen. This means that the maximum number of a subscriber unit is only a common caller possible, waiting call states per work number, but with an outgoing call and space for the number of possible call states such as io backward setup after reporting the call to be called 13: 2. For this reason, a call initiation answer set can be correctly identified at the facility described below from can.

Speech path network separated, ie that for the use of destination memories, the originating line no connection via the speech path network memory is not required if it is switched through differently, but instead is initiated via the central control unit from the direction ZSE described below in sections 1 and 2. Therefore, the Kop example is basically the establishment of a connection with pelnetz only for the number of possible calls, redialing and reporting requests (disconnections to be measured. Accordingly, cuts 4 and 6), i.e. without reporting the caller, the number of necessary crosspoints can be made at the subscriber station ,
stay bordered. ao Each subscriber station is still responsible for all inquiries

During a waiting state, the central unit is assigned a fixed memory, for example an FSL control device, and the other central device, in which the own address is stored, and is free for other functions. The coupling network is ^ which on request from the central controller is not transferred to the remote station for the waiting call state,
spoke taken. as For special conditions, for example when returning

Since the security supervisors are handling their task, each subscriber station is also very busy with an auxiliary target, and each storage tank is also B. HS 1 assigned, with the help of which a siko additional connection can be established in the course of directing the aircraft, which must be, it is expedient to delete a destination memory arranged between two subscriber stations 30 without the interrogating interrogation set establishing the connection between two subscriber stations 30 must become. Also always both of switching measures of the calling- this auxiliary target memory is provided for more than one polling, as well as switching measures of the called set for this jointly, since the subscriber station or interrogation set depends on the probability that several make at the same time. This means that the interconnection 35 ge connections or conference connections over the speech paths is to be initiated only when the interrogation sets of a subscriber station return call of the called party are reported. is low.

In the system described below, all functions of the connection establishment, such as

So always first from the calling station a choice, request of the control units, revaluation desired, subscriber station to be called by selection marking, free and busy signaling, automatic or pressing a direct call button determined and 40 tables call repetition, reporting and other over the central control device ZSE these sub-processes are initiated or carried out by the control units, the spoke receiving unit, if it belongs to the same system, and the corrector. Aul is controlled and signaling is activated when the called party is called, in this way a large part of the function is switched on, and then only logic is preprocessed in the control part assigned to the corresponding subscriber unit when the called subscriber is switched on Via the short times for the connection setup unc the central control device achieves the marking and short occupancy times of the central control device route search for the connection through-connection to the device.

cause. For the traffic between two systems It should also be mentioned that the information in

line transmissions are transmitted on each connec- tion 50 two-out-of-five code. The Ur Line end interposed. Jump, target, fixed and half-target memories are be

The foregoing assumes that at each part of a two-out-of-five code for the storage of voi subscriber station at least one so-called origin per twenty bits executed, while the direct memory US per incoming, waiting call buttons assigned memory only one Bi is provided if no call button 55 need to be stored for this, because this direct signal is available. In such an original memory, wrestling is controlled by a converter
2. B. VSl of the called subscriber office 7Sl It should be mentioned that every connection

the address of the calling subscriber transmission is always saved here as a .uerverbindungslei point. On the basis of such a convergence is drawn in and each of a specific memory is also listened to the corresponding traffic direction being called, as is the partial lamp, e.g. B. ALI switched on. These hn entrepreneurs have an original memory.
the called subscriber station to reverse The following are the individual processes

establishment of the desired connection. 65 when establishing a connection and for special functions

Only if a participant can see more of the design shown in the drawing AbfragegarnitUT for the fulfillment of certain probing examples of a plant of a Verantthingssy derbcdmgungen, the stems described below for air traffic control.

!. Outgoing connection establishment between

two subscriber locations within one facility ^

·. '. · ■ So now it is with the called subscriber office

Each subscriber station TS1, TSn, etc. consists of the waiting, calling subscriber station identified control part 51, Sn , etc. and a control 5 records. Only the waiting interrogation set of the sub-table KTl, KTn etc. The control part Sl, Sn gives the subscriber station TSl during this time neither commands to the central control device ZSE nor an incoming call, nor holds an outgoing new connection from this central control device In- Establish without formations and commands. The control table is assigned that the existing request request is deleted, all signaling elements and selection buttons, as well as direct call buttons and the interrogation sets. The speech paths between two participants 2. Report the called subscriber station are made directly to the via the coupling network

The sets switched through, and that under- Either the head of the watch or the auxiliary officer

switching of the subscriber connection, e.g. 15, the signaled incoming, the longest

TA 1. Accept the control parts Sl, Sn two connected waiting calls by his Subscriber stations TS 1, TSn are picked up via pilot wires and the answering table assigned to him SL 1, SLn actuated as control cores via the coupling network,

if connectable. It should also be mentioned that if, for example

The outgoing election is z. B. There are three original memories per subscriber station from the query

garnitur A 11 from the part of the election officer by sending, three addresses are arriving at the same time

lift the handset and dial using the keypad Calls can be saved for each subscriber station,

initiated while dialing via the second query These calls are processed in the order in which they arrive.

set A 12 of the auxiliary officer assigned to the querying set by lifting the fens,

of the handset, pressing an assignment key B 1 and »5 With the introduction of the query, the

subsequent dialing initiated with the keypad Central control device ZSE requested and at

will. These different switching measures when already in the central control device ZSW

outgoing choice provide the assignment for this via the subscriber station switch PS

further call initiation required individual connected to the requesting subscriber station TSn ,

Means safe. 30 and the original memory VSn 1 contained

The selection information is assigned in a tene the source address to the central control in control section S1, optional device not shown ZSE existing buffer store ZSP added and upon complete choice given. Now through the center Steuereinrichwelche from a corresponding, the control part to-tung ZSE through the viewfinder SA which the origin Parent is determined choice reviews, the 35 address corresponding subscriber station TSL Festge Office provides control device ZSE about the participants and driven. The merstellenanschalter PA in the read-only memory is connected to the address of this subscriber station which is present in the address of this subscriber station and which provides an incentive for the request. The TS 1 with that of the original memory USn 1 kom selector Info nation Menden to a latch and the latch ZSP the Central ZSP the central control device 40 ZSE transferred controller ZSE stored gene of origin. At the same time, this electoral information address is also compared for security reasons. If the target address in which the interrogation set A 11 agrees, the central control device ZSE accepts the target memory ZSI1. The from the marking of the originally called central control device ZSE now causes the connection finder SA to control the TSn and TSl over a wide range via and the originally calling subscriber station. Under Desired subscriber position, z. B. TSn. The path searcher WS is given help via the coupling step request incentive to the control part Sn . fen C, B, A is made with the help of the control modules

If the call is not a di- of these subscriber stations and the subscriber

direct call, it must now be determined whether in the circuits TA 1 and TAn the connection between

Control part Sn of the desired subscriber station TSn s ° the two subscriber control units TS 1 trad TSn and the

an original memory, e.g. USnI, is still free. Is the corresponding interrogation sets A 11 and Αηί

this is the case, as was the case in the interim.

ZSP memory of the central control device ZSE It should also be mentioned that the determination of whether the existing address is compared with the address in the read-only memory interrogation set All or the interrogation set A 12 FSn for security reasons. Then 55 of the subscriber station Γ51 with which the original subscriber station is to be connected by the central control device ZSE , based on a * spr · -; -: ", esse of the calling subscriber TS 1 comparison of the request from the permanent memory FSn of the melaus <icm t vsispefcher FS 1 The address of the participant part TSn via the central of the calling subscriber is from the control device ZSE to the originally calling permanent memory FSl via the central control device - 60 subscriber station TSl given original address tong ZSE to the original memory, z. B. USn 1, which with the content of the target memory ZS 11 and ZS 12 he transmitted the desired subscriber point TSn , where follows. It is determined in the soft target feed until the cancellation of the call request or rather the target address is contained. The result will remain stored when the connection is disconnected. from the control part Sl directly to the subscriber's shell

With the Einspetchcnfflg of the original address in the 65 device TA 1 given, where the connection of the dei Uisprungsspeicher USn 1 of the desired subscriber from the interrogation equipment All outgoing line

mcrstdle TSn is initiated in the common part Gn of the switching matrix. At the same time, de

Control table KTn the subscriber station which transmits to the central control device ZSE , which «

device ZSE hunt the so-called target address to the deleting subscriber station TSl and there it is compared with the content of the target memory ZSU and ZS 12 and this address is stored in the target memory in which the address coming from the fixed memory of the called subscriber station TSn is stored as the target address turned off. This deletion is also reported to the central control device ZSE , and the latter is then released.

The original memory mentioned is now deleted at the originally called subscriber station TSn and the corresponding call lamp is switched off. The originally calling subscriber station which deleted the connection is now, for example

Inquiry set of the originally calling subscriber station is to be marked. Correspondingly, the marking and the route search are also carried out in the coupling stages C, B, A.

For each interrogation set, an incoming and an outgoing connection is provided via the switching matrix. This means that both incoming and outgoing connections are always set up in one direction from coupling stage C to coupling stage B and further from B to coupling stage A , but separated for the incoming and outgoing directions.

The connection between the reporting subscriber station TSn and the interrogation set AnI

So a new call request runs from the subscriber station TSn via the 15 to coupling stage C to coupling stage B, further to coupling another place. In this way, level A and to the subscriber station TS1, namely a correction there in the event of incorrect dialing, is also possible.

to the interrogation set A 11.

After the connection has been switched through, the

4. Cross-connection traffic

3. Delete an existing call request
on the part of the calling subscriber station

Central control device ZSE released again. * °, .., ",. · .. ·. · R

In the original memory (1) z. B. USn of the report- In the previous part of the description is on

the subscriber station TSn remains the originating the cross-connection traffic as well as to the possible address and in the destination memory (z. B. ZS 1) the origin in the private branch exchange and via this latter borrowing subscriber station TSl the destination remains in the public office select, address still saved for the duration of the connection. 25 has not been received. This is done below,

but only as far as this is necessary for general understanding is necessary on the basis of FIG. 1 and 2.

For now, it is pointed out that the control modules Sl and Sn in circuit-switched connection has a calling subscriber station 7 "Sl, examples 30 through the only indicated auxiliary conductors SL1 and SLn game, the guard conductor on the sampling frequency and the switching network during an existing encryption A 11, as already described in Section 1, a connection can be interconnected in order to be able to transmit signals whose subscriber station, e.g. TSn, within its own, e.g. also the end signal, selected a system, so For every possible cross-connection direction and

Called subscriber station pending call is then also for the traffic to the private branch exchange and deleted when the officer of the calling interrogation garni- via this last to the public office are either new to establish another connection or if he dials a pending connection
Queries the call by pressing the answer buttons
or the end key is pressed. In all three previous 40
The central control device ZSE is requested, and when this is switched on via the subscriber station switch PA, the target address for the intermediate storage ZSP of the central units is requested

Transfer control device ZSE. Thereafter, 45 merstellen via the central control device ZSE the central control device ZSW driven for the buying. However, a separate transmission link searcher SA, the originally called sub-searcher SUN, is provided. Triggered at 7Sn request stimulus customer point. By means of comparison signals through an incoming transmission from the central control device ZSE, the other read-only memories FSn of the originally called 50 circuit of the central control device ZSE are obtained via the transmission switch SEG . For the subscriber station TSn queried address with the common target address of the subscriber station TS1 originally calling a register coupler RK , which is present via buffer memory ZSP, is provided.

and if they match, the address of each transmission is only one source memory,

from the fixed memory FS 1 of the originally calling 55 z. B. USp to U * p, and a priority memory, e.g. B. the and now the connection deleting subscriber PSp assigned to Uep. Destination memories are not required to be created by TS1 via the central control device, since a transmission of its own accord does not select a ZSE to the originally called subscriber station. The original memory TSn is transferred. This address is compared with the content always takes the address of the calling subscriber of the existing original memory of this subscriber station in both the incoming and outgoing receiving station and where the traffic is recorded. In the priority memory PSp there is an address in an original memory, a matching identification for the value of the system is present, a deletion of the original acceptance, from which the assignment of the memory contents is initiated. (incoming or outgoing side) takes place. The"

This deletion is reported to the central control device. 65 Transmission identifies the system priority, ZSE , and then from the In the register there are also a transmitter SE for d «

Fixed memory FSn of the originally called partial forwarding of the dialing code and an originating device TSn via the central control device memory US and a priority memory PS in each case al!

Separate trunk groups present. Each direction is identified in a well-known manner with a direction number selected.

The drawing shows a transmission Uep of the cross-connection line QLpIR 1 in the direction R 1 and a further transmission Uem of the cross-connection line QLmIR 2 in the direction R 2 . The transmissions are like the participants

Temporary storage provided. The original memory US and the priority memory PS pass on their information on request, for example for the corresponding connected transmissions. The address of the selected subscriber station recorded in the destination memory ZS is made available to the transmitter SE for forwarding the dialing code. The connection is then established as for the internal connection establishment.

5. Plant priorities

IO

It is assumed that two subscriber stations TSl and TSx (FIG. 2) different systems / and X want to connect to one another via a connecting line QL 1 and corresponding connecting line transmissions UeIl and Ue 1 χ. It is also assumed that the two subscriber stations mentioned call each other independently of one another.

In this context we refer to FIG. 2, in which the systems / and A "are indicated. Also, two connecting lines QL 1 and QLX with the assigned in each facility connecting line transmissions Ue 1 1 and P 1 and χ Uenl and Uenx shown. As

It is also assumed that the subscriber station TSx first initiates a connection via the switching stages Cx, Bx, Ax and the transmission UeIx as well as the connecting line QL 1 and the transmission UeII and the switching stages A 1, Bl, Cl to the subscriber station TS 1 of the system / and the waiting state exists at both subscriber stations

This means that at the subscriber station TSx in the destination memory address of the subscriber station 7 "5I and the subscriber station TS 1, the source address of the called subscriber station TSx is stored in the original memory. The called subscriber station TS 1 can not see because of the call-processing component which subscribers place calls

It can therefore happen that this called subscriber station TSl, which is called via the said first connection path QL 1, even the calling subscriber station TSx via a second, outgoing connection path, e.g. B. QLx wants to call. For this purpose, the selection information for the central control device ZSE (Fig. 1) is also given after the selection buttons have been pressed and when the selection is complete. A cross connection is recognized there. A free transmission, for example Uenl, in the desired direction is assigned and a free register Reg (FIG. I) is connected to this via the coupler RK (FIG. 1). The selection information is then passed from the buffer (Zsp) of the central control device ZSE to the target memory ZS of the register Reg , and the transmitter .SE passes the selection information to a register connected to the counter transmission Uenx and via this to the central control device ZSE of the counter system X. The subscriber station TSx is controlled as described in section 1. The address of the subscriber station TS 1 is recorded in the original memory of this desired subscriber station TSx. A comparison with the content of the target memory takes place in the control part of the subscriber station TSx. If a match is now found, there is a so-called parallel connection request.

On the basis of the determination that the original address is also already in the destination memory, the priority identification of the opposite system recorded there is requested from the priority memory PS (FIG. 1) of the line transmission Uenx. At the same time, the priority of your own system can also be determined based on the target address. On the basis of a comparison, the call to the system with a higher priority is now determined in the control part of the subscriber station TSx. This comparison takes place - as already mentioned - in the control part of the subscriber station TSx, in which a match was established between the content of an original memory and the content of a target memory.

In the present case it is assumed that the system / has higher priority. Since in this case the calling subscriber station TS 1 is determined to belong to the system with the higher priority for the connection initiated last from the calling subscriber station TS1 to the subscriber station TSX, the connection initiated first is deleted by the control part of the originally calling subscriber station TSX. At the same time, the central control device ZSE initiates an automatic reporting process at the subscriber station TSx, which is the subscriber station called for the "high-quality" connection. This means that the control part of the subscriber station TSx now gives the original address of the subscriber station TSl stored there, which is in the target memory ZS , for the purpose of establishing a connection to the central control device ZSE of the system X and from there to the system /. The connection through-connection in your own system X takes place with the aid of your own address in your own permanent memory.

From the foregoing it is evident that only the subscriber station of the system with the higher Priority is the calling station for whom the call is actually initiated, regardless of whether this belongs to the first or last connection initiated. At the corresponding remote station, the called one Subscriber station of the system with the lower priority becomes the automatic one in the reverse direction ongoing connection establishment as if the called subscriber station 7! Sx would have reported in the course of the call status by pressing the query button. The one from the calling subscriber station The waiting state initiated in the system with the lower priority is deleted.

The comparison of priorities described above at the called subscriber station can also take place at the calling subscriber station number Although this simplifies the connection production process in a certain sense, however, connections are established in parallel at the same time lungs not recorded and precisely those double connections that occur especially in crisis situations can, it must be prevented.

For this purpose 2 sheets of drawings

Claims (5)

management system with patent claims developed as switching stations: Teünehmerstelleo, in which with the help of a 1. Method for connection establishment in the central control device via a corresponding one äner Feraspra & vennitthingsanlage with a coupling network for an outgoing connection Subscriber stations that have been expanded to include shared places, s connection establishment in each case by a subscriber station that determines the desired subscriber station with the help of a central station Control device via a corresponding Kop switch measure of the calling subscriber station pel network one initiated for an outgoing connection and one for an incoming connection Connection establishment in each case by one subscriber station calling another through another Another desired subscriber station determines the switching measure of the calling party that determines the number of waiting subscriber stations. Switching measure of the one waiting call merstdUe initiated and at an incoming receiving, called subscriber station Connection is initiated by another calling a connection through-connection with Subscriber station of several waiting partial cross-connection traffic, with target and originator controls determining switching measure of the »5 jump memory for storing the respective receiving a waiting call, to addresses are provided. Called subscriber station a connection If there are special requirements on switching systems through-connection is caused to be made with cross-connections, for example also a dungsverkehi, where the destination and source memories allow use in the flight location service, the storage of the respective addresses is provided * ° full accessibility of the switching places in the hen are characterized, floor-to-floor telephone traffic is necessary. These that every time an address is included in reachability, in the past an auxiliary a target or original memory of a sub-facility, e.g. call cancellation, preferably Subscriber station the memory contents of the destination and call assignment, parallel connection of lines Original memories are compared with each other and service line connections are increased. den and with a match of the store. In large control posts had to - around the- content to achieve this goal as a parallel connection request - additional manual communication two subscriber stations is recognized and should be introduced. But this was at the expense of then existing system priorities (pre-overview at the operator stations. authorizations) of the systems to which the calling 3 «> the additional mediation time seemed operational and belong to the subscriber called, not always acceptable. are balanced and only the connection is established. is provided by a calling subscriber - that an unrestricted accessibility of all ar- put with the higher system priority from work stations and all connected lines without was directed. 35 the participation of intermediaries becomes possible, 2. The method according to spoke I, characterized in that special conditions that indicate in the flight that the connection with the altitude security service occur, must be taken into account. at In order to give priority to systems in the reverse direction, it must be ensured that is built. every air traffic control officer in his place at all times 3. The method according spoke 2, thereby ge 40 overlooks the pending connections indicates that the calling party has -and he must establish every connection at all times recipient of the system with the lower priority. In addition, it must be ensured that the did initiated wait state is deleted. Connections depending on both the calling 4. Circuit arrangement for the implementation of the and the called Stelk manufactured who-method according to spoke 1, thereby marked 45, that is, that both the advised as indicates that the connecting line transfer also the calling station must submit a readiness declaration memory for receiving the priority nmg for the connection. So it can identification of the counterpart system are assigned. no arbitrary participant position at will 5. Circuit arrangement for carrying out the another subscriber station in connection tre-method according to approach 1, characterized, but it is in each case both circuit signs that the connecting line transfer measures of the calling as well as switching measures the addresses of the calling subscribers required by the subscriber station called. represent the receiving original memory. For this reason, the workplaces are only are net. the status information, in particular the signaling