DE1810684C3 - Circuit arrangement for telephone, in particular telephone branch exchange systems with a single-stage relay coupler matrix - Google Patents

Description

1 2

It is known in telephone systems that the individual opposing polarity is connected to the corresponding wire of the

Subscriber lines and the connections gene column line is evaluated, which is a free

to scan sentences one after the other in order to identify certain aspects or the identification of the part to be called

assigned connection states of these lines or connection set containing the connection recipient

sentences to determine which is the connection of a 5. According to a further embodiment of the invention

Such a line or such a connection is followed by the successive and cyclical ones

set to another line or a connection marking the individual subscriber line switching

Require instruction set. When scanning such lines by decoding the through a central

Line or such a connection set, scanners are formed in continuous alternation,

the relevant coded identification of the individual part numbers from the position of the scanner

line or the relevant connection set represent the system and the marking of the connection

identified, and with the help of this identification earthing set by an uncoded, direct control

Result is the setting of the marker, the tion of these sentences by the scanner, and it is at

has the task of controlling a connection set in the coupling stages

Connection through-connection possible 15 approximately stored identification of a call-

To designate input and output lines or the subscriber station in which to identify a

to switch on those coupling means which are selected for the calling subscriber

Weil saves the desired connection establishment in question and also uses a to mark a

come. . calling subscriber station serving decoding

In these known systems, the through-connection of the takes place at the device for forming the Setting of the scanner au 'a connection line to be called subscriber station to which the identifier or a connection set initially containing the identification of this participant this line or this connection set, set initiating output potentials of this thus from the identification result there :, the gate circuit assigned to the subscriber out-through-connection performing coupling switching means as evaluates. In such an arrangement, for can be selected and made effective. Enabling a simple switchover of a

To determine the identification result, it is a subscriber from one connection set to one already known (de'tsche Auslegeschrift 1245 436), other appropriate the one with the switch-on individual subscriber circuits each carrying an electrical potential for a line-specific coupling relay Niche gate circuit to be assigned, whose respective 30 wire connected output of the gate circuit is the same output when setting c "cs sampler on a timely the output of another participant's own certain subscriber circuit depending on the gate circuit from which an input with the State of this subscriber circuit is activated marking a through to a subscriber station and through its output potential the identification of the switched connection set and the identification of the relevant connection enables. This enables identification even with this subscriber station Arrangement must have the respective identifier fizierungspotential leading wire and another result in a marking of the relevant subscriber input via a signal decryption device mers are implemented, so that after the subscriber to be called also with the identifications required definition of the party to be used or desired by the calling subscriber or storage device binding record already used 40 directions of traffic that this subscriber station is connected to this gene of all connection sets. The through-connection set coupling switching element switched on would give corresponding control commands in the first can be. connection connected to a participant

The invention is based on telephone, in particular set takes place in such a way that in the on-telephone private branch exchange systems with a single-stage 45 one would take the switching of a subscriber station relay coupler matrix, whose coupler relay via ent- from a connection set to another coupling organs to a wire of a one Subscriber connection set causing identifier, so a connection circuit or a connection set, for example, an office identifier or a back-assigned row and column line attached query identifier in the memory device for these, with also a marking device 5 "Wahlkennzeichencn the initially occupied connection to one another Cyclical message set that takes place with the activation of the relevant marking of the individual subscriber connection circuit subscriber station with the other connection set and connection sets and subscriber units via a line-own coupling relay n electronic gate circuits, which derived the position of the marking on a calling 55 corresponding control signal at the input output of the signal decoding device and the? u- subscriber station or at one of the marking nearest occupied junctor is supplied, and a comparison to be called Tdlnehmerstellc containing Although in the way that in the case of the inquiry in connection set are activated, and this connection set only for the duration of the avoids the above-mentioned for the Mar inquiry the separation of the speech wires and in the case of switching the coupling relay to be switched on an externally binding implementation of the identification result in the case of a record in the initially occupied internal connection record which is caused by the cyclical scanning of the subscriber line release of this record,
A further simplification of the control pre-output signal of such a gate circuit both ganges results from the fact that the reversal for the subscriber-side application of switch-on is built up to a connection set or potential to the desired coupling circuit via a Connection set running connection producing wire of a line wire as well as for connecting-causing signals when this Verdiingssatzscitigcn is applied a corresponding connection set by the marking device in the

also stored code used for the identification of a subscriber station to be called or called and a decryption device for marking the connection set in question connected subscriber station and the one in question for the connection to be redirected Connection set as well as for releasing the connection set containing the reversing signal or for the only verbal disconnection of an external connection set containing the reversing signal be evaluated. For this purpose, each subscriber line circuit is connected to a further one Gate circuit equipped, one input together with the corresponding inputs of this Gate connection of the other subscriber stations to those when the connection set initially occupied was marked the decoded reversing signal leading Signal line is switched on, while another input on an identification wire of the connection set to thisp leading line and language guidance of the matrix and with the setting of the Marker on this connection set by activating this gate circuit the switch-on potential for the subscriber station with the connection set to be used for the new connection Interconnecting coupling relays of the matrix to the corresponding wire, that of the subscriber station assigned line line is switched on.

The F i g. 1 to 8 of the drawing, which in the F i g. 9 are to be joined together in an apparent manner, show as an embodiment of the invention the Construction of a telephone exchange. The reproduction is limited to the representation and the interaction of the most important assemblies and components. Details necessary for understanding not essential to the invention are omitted.

The connection of a subscriber station (denoted as subscriber in the following description) to a connection set takes place via the in FIGS. 3 and 4 shown switching matrix with the coupling relays Kl to Kn. These coupler relays have a response winding I and a holding winding II, the response winding being connected via decoupling diodes Di to one of the subscriber line lines ZL1 to ZLm and one of the connection set's own column lines VS, AS, LW or AW . The through-connection takes place with five wires, namely a holding wire d and a control wire e are provided in addition to the two speech wires α and b and the identification wire c , the latter being used to switch on the respective coupling relay to be switched. This is held on its winding II and the rf wire, to which a Trcnnrelais T is connected in the associated subscriber circuit (Fig. 1), which indicates the busy state of the subscriber circuit concerned by its response.

The switching means of the individual connection sets are shown in FIGS. 7 and 8 only indicated dial recording devices TWJ and TWA , which record the identification of the subscriber to be called selected by a subscriber and make it available for selection in memory flip-flops FS ' 1-4 or FSa 1-4. The connection sets have control points Re \ and Rr 2 , which by the • central scanner 7Λ in Fi g. 6 marking potential is supplied as soon as this scanner adjusts itself to such a control point. This takes place in a cyclical change with the individual subscriber circuits. The central scanner ZA of FIG. 6 s thus has, in addition to the control outputs and rel, which are used to control the connection sets, of which the former is assigned to an internal connection set JVS and the latter is assigned to an office connection set ASV , further identification labels.

xo gears co 1 to co4 \ These outputs result in a cyclic succession, in coded form, the marking of the individual users to TINM TiNx, said coded marking of the individual subscribers in the subscriber decrypter TES the F i g. 5 is evaluated for the assignment of a subscriber's own marker line tel to tem. The marking line ic] to tem occupied in each case in this way represents in FIG. 1 represents one input of a first subscriber's own gear shift that

z. B. for the participant 77h 2 by the resistor /? 84 and the diodes D 70, D 72 and D 74 is formed. The other input is connected to diode D72, which receives its opening potential via the subscriber loop when the assigned subscriber, i.e. subscriber TIn 2, hangs up his receiver. In this case, tan appears on the line. the signal amplifier .ST 3 -n F i g. 6 leads, positive potential, because the positive potential present at the tap of the voltage components formed by the resistors R91 and R92 via the still closed contacts / 2 and / 1 of the subscriber relay T, the closed subscriber loop, the resistor R 84 and the diode D 73 of the Line is communicated tan. The subscriber amplifier TV. the

is unlocked by plus potential at its input and when it is cleared, turns on the switch-on potential for the coupling relays Kl. KS, K8 and KU to wire e of the row line Zl2 , is not activated for the time being, since the plus potential applied via the diode D 72 is compensated by a negative potential that is connected in the subscriber decryption TES of FIG. 5 to the identifier wire ic 2 assigned to the subscriber TIn 2.

The in F i g. 6 shown central scanner Z / l

runs continuously and provides the individual connection numbers of the subscribers TIn 1 to TIn m in coded form at its outputs co \ to co'4.

Is at these outputs of the scanner ZA the

o ° Identification of the subscriber unit TInI . so will this marking. in the TES subscriber decision of FIG. Tin2 of the subscriber 1 5 decodes unc ¹ leads to ^r shutdown of the minus potential at the Kennzcichnungslcitung tel FIG..

As a result, the positive potential can now pass through the diode D 72 r. To the subscriber amplifier TV , which at its output the switch-on potential for one of the coupler relays K2 connected with a winding I to the wire e of the ZcilenleitungZ / 2. K5.

^£ o K 8 or K 12 provides. The selection of the coupling relay to be excited is made by the connection set to be assigned.

By picking up the receiver, the subscriber TIn 2 is first connected to a free internal connection set JVS . Therefore the incentive vein AScvi is activated via the switching amplifier SV3 in Fig Ci to a A ;:; g. In F i ■ de And gate IFJ first 7 de- indoor verbiiuiimgs-

VS and; ifi corresponding inputs of corresponding AND gates of other prevention sets is switched on. Which of these connection sets is to be used. depends on its provision. tile provision is indicated by the other input JVS- / Ίζ / wi · des ünd-Ciattcrs UJ 1. It is left open whether a specific set of internal connections is determined with the help of a chain circuit or a special allocation device. Both possibilities can be used and are known per se.

Is the in F i g. 7 has been provided for the next connection process and is at the input JVS-Auuv of the AND gate UJl corresponding potential. so is the connection of potential at the other input Asan the output of the AND gate Uji activated, and via a circuit switching amplifier DVJ 2 to the e-wire is turned to the column line AS counter potential for energizing the Kopplerrelais KS in Fig. 3, which comprises Switch-on potential is supplied on the subscriber side via the subscriber amplifier TV of the subscriber Tlnl.

A second gate circuit for the subscriber Tlnl is formed by the diode D85, the diode D 82 and the resistor R 99, so that the subscriber amplifier TV can be activated via the outputs of both gate circuits so that it has the switch-on potential for the to the e-wire of the row line ZIl assigned to the subscriber Tlnl provides connected coupler relay. Which coupler relay is to be switched on is decided by the occupied column line, since the respective counter potential is fed to it.

Besides the subscriber descrambler TES of Fig. 5 in Fig. 6 or a signal decoding device SES provided which also decrypts the code lines cl \ to C / 4 pending information in order to form therefrom certain control signals via the switching amplifier.? ^! to SV 3 and SVS to SV8 are fed to both the connection sets and the subscriber lines. The lines id and Auf, to which the subscriber lines are coupled via appropriate decoupling diodes D 85 and resistors R 81, serve to supply these control signals to the subscriber connection circuits.

The signal decoding SES is influenced via further outputs Int and Office of the central scanner ZA in such a way that the evaluation of a signal included in a connection set is not only dependent on the coding of this signal but also on the origin of this signal, since these outputs Jnt and Office the scanner ZA signals whether it has adjusted to a subscriber, an internal connection set or an exchange connection set.

The row lines which are assigned to the individual subscribers also lead through an authorization network TB (FIG. 2), only partially indicated, the column lines 1, 0, 9 of which lead to a blocking device SpE in FIG. 8. This blocking device SpE is connected to a dial converter ARg in order to determine from the digits recorded in the dial converter after the outgoing assignment of a free exchange connection set A VS whether it is a connection for the calling subscriber. The election converter AR ₁ : sees via a register coupler Rg-Kf-, dir in FIG. S is only hinted at. with the dialing devices FSA 1 to FSA 4 of the exchange connection set A VS in connection and h.it the task of converting the dialing codes to be passed on via an exchange line AL , which a subscriber gives with his keyboard, into impulse series. The pulse relay S of the incoming American connection set A VS

ίο controlled by the converter ARg in a manner not shown. After the connection to the public office has been established, the polling converter ARg and the blocking device SpE are enabled again.

The blocking device SpE , like the connection sets JVS and AVS, is controlled cyclically by the scanner ZA via the line rc3, so that a cyclical check of the code digits of the desired connection leading into the public network takes place in the dial converter ARg.

The trunk line AL also contains a per se known charge switch GbW. which is used to control a counting contact during the duration of the Veras bond. The counter of the subscriber connected to the line .4L is incremented by high-resistance connection of the counter potential to the identification wire r.

Returned to the description of an internal

Connection setup cs, thus results in that the coupling relay KS in Fig. 3 responds via its winding 1 and holds itself via its contact k 54 with its winding II, which is connected between the holding wires d of the row line Z / 2 and the column line AS

is switched. On the subscriber side, the subscriber relay Γ (Fig. 1), which responds and, by opening the contact part and / 2, enables the subscriber TIn 2 from the other devices of the subscriber circuit TS in this holding conductor. By moving contacts / 3 and i4, on the other hand, the relevant subscriber line is marked as busy.

The subscriber TIn 2 receives the dialing character from the connection set JVS (FIG. 7) in a manner not shown, which prompts him to dial the number of the desired subscriber. Since it is provided that the individual subscribers are each equipped with a keypad, the individual connection sets JVS and AVS touch- dial receivers TWJ or TWA are provided that record the individual digits of a call number entered by the subscriber and store them in bistable memory elements until they are evaluated hold onto. For the sake of simplicity, only four storage elements FSi to FSiA are shown in the internal connection set JVS.

Four bistable memory elements provide the possibility of storing 16 different signals, whereby these signals through different subscriber numbers and other control signals and direction indicators can be formed. With larger numbers of participants, the storage elements are several times to be provided or to be scanned several times in successive steps. Entering the key number itself can be done in any known manner, since the invention is not directed to a particular one Touch dialing is limited.

As already mentioned several times, the scanner ZA in FIG. 6 not only the individual call

810

, ·, ■ ·, ι " , ι _Ρ η Aii"; oänpen rol

take care of the lüilnchni nn the outputs ro λ o, s, - _o i, ur available, rather
irittingen rr J and rr 2 become aurh dungssatzc ^ S and.lic.
scanned with the Z

f οίπ ,, ^ η IS

Λ KV correspond, via lines n 3

already mentioned, the blocking devices SpE m also included the scanning cycle.

Ism of the memory elements FSilbisfSi ^ desVer

binding setesiKS (F, g. 7) the complete call number of a subscriber is saved and carries out the setting of the scanner ZA on the, | "" ^ ve JS act of \ ers arkcrs

unessatz

S is set and the output of Ver _{akt has} jvierl. lies around other £ ^ ™; £ _hah ^ J _{2 öfInullgsp} otent _ia l. ,. ^, the _AND circuit UJ 2 is above the

SchafveStäfkcr DW3 on the switch-on lead, which is connected to the switch _{via the decoupling} .

»^, Ode with the w, ck, un _g I des Koppelre.ais, 7

> 3 become like _{(j on the other hand at} the _{classification Z} , _h so that the head _over ^ .. ^ _{winding T ric} hs and itself

P ι winding Π after

practice the ^ ^ ^ ^ ^

■ «^ _{Subscriber relay T des}

the setting of the scanner ZA on the | ^ ^ _mers %, _a n and denoted by open

binding setJKS to activate the \ ers arkcrs »5 mins _{h this participant a! s}

As a result, KI becomes the memory elements in the Kongk ^e , _{jd hjb}

J ₅

binding setJKS to activate the KeI. The identification of the desired subscriber stored in the memory elements Γ5 / 1 to FS / 4, e.g. the subscriber's phone number TInX for spying out in the subscriber decryption / LS aer Fig. 5 released. The storage of the voir, uinehmer dialed number takes place in the same code in which the scanner ZA of the Fi g. < the marking of the different participants b Idet and on the output line about 1 to -r> 4 ready. so that both the identification of a calling subscriber and the identification of a subscriber to be called by the same Tennchmerentschlüssclungseinrichtung TES of F1 g. j can be evaluated for maming one of the identification lines te \ to tem.

To simplify the circuit, the security of the subscriber connection to be called TIn ί will now be described on the basis of the subscriber connection circuit of the subscriber to be called 77-2 (Fig. 1), since the individual T. I-rielimer circuits are always built in the same way . As a result, the identification line for the subscriber TIn 2 is also indicated by a dashed line in the subscriber circuitry for subscriber TIn 2, which is coupled to the control line for subscriber amplifier 7 V via a diode D71. .

If, therefore, by decoding the selection information recorded in the memories FSH to F. «4, which, when the scanner ZA of FIG. 6 to the interconnection theorem J VS of FIG. on the code lines eil to el 4 gclami. If the negative potential is removed from the identification line rel, the positive pole applied via the resistors R 87 and R 82 as well as the diode D 74 can become effective at the subscriber amplifier TV and also with the subscriber to be called 77-1 to connect EmschaUepotcntial to the corresponding switch-on caderp ZcilcnleuungZLl lead for the coupling reiais connected to this line. In addition, the positive potential is angeschaliet td to the line in Fig.l through the diode DW, the LAN in a similar manner to the starting line via a switching amplifier SV4 of F, g 6 for AKU-crossing of a Anlaßle.tung LM leads''' which, m document internal connection set J VS in Fig. 7 linked to an input of the AND circuit UJ 2 > sL W in the same way this: An.assleitiing LWan is also connected to corresponding AND circuits of other internal connection sets that are not shown.

Since _SI ch 4 in F ic 6 re at which time the Abta ^ rZ / via line 1 to this _be Innenverbin. "2

g _g , _{wjrd mjnmore jn}

^. _{Call during the} participants

f receives
^^^^ _{Πμ1 bcse} , zt, so can the

_Part | _{If there is no stronger} TV of this subscriber, we will spot _{the supply of PUl}

, ^, _{via the opened contact} , 3 is missing. In this _{frequent participant Πη2} the busy signal. in _nncn connection sa.z yr.V. the manner provided ^ presented after some

_r .eV
re

Participant Tin 1, however, a posting number within the activation line of the In- IVS

^, only the participant in

The storage devices of the internal connection set / KS (FIG. 7) are stored and are stored again when the internal connection set is scanned via the Em -, * pancs amplifier RcI . "" The signal characterizing the intrusion is the signal decoding SES of FIG. 6 and to activate the line F IA ufsch. "jSECwerlet. This signal line is linked via the switching amplifier S-Kl with the control line on, leads die'im case of the feedforward plus potential that the Teilnehmervcr- TV is fed via the resistor R 81. On the other hand the partial TiNx aufschaltevcrliindert. is so _{the signal in Fig} . 6 with the line F 2/1 uj a diode D 2 at the output of the rvw s TV of the relevant speaking "" prevents the formation of a potential for the coupler relay Kl diesel no awakening.

ig, on the other hand, speaks par-

activated coupler relay of the other coupler relays to unc _ltl >, "..... - - - Jfenden subscriber to the existing call. The Aufschaltesiana _lua t stored in the internal connection set / KS ¹ switches a ticker symbol ai the speech cores in a known manner and causes the disconnection of the supply voltage on the side of the column line LH d ^ s relevant connection set JVS.

Ie ASan and LWan also have an effect on the zeniraisn scanning via di in such a way that the deactivation of the Abtartf.r · = takes place, se mm au. -, ..- of these lines an occasion policeman: appears. After the copier has been switched through, i.e. after a splitter has been switched through

p
circuit ^

tre

voγ "

9 ^ 10

line AS, LW or AW on . an occupied line selection of a free exchange connection set, on the other hand, the continuation of the scanner ZA is released again potential to the e-wire of the column line AW , switches, so that after activation of the subscriber

The other amplifier TV still shown in FIG. 6 also connects the coupler relay K12 via the e-wire

Control lines; Ausl., A Wan, Tran and Trot are addressed in 5 and continue with the d-vein

in the same way, with the central scanner ZA .

linked Once so Ums.Amt on one of these cables in the signal wire Fl will appear in Fig. 6 of the white signal, it means that the scanner to direct the control line Ausl. linked through the Schaltvercinen Veibindungssatz or a subscriber line more SVS, and via this Stcucrlcitung • is set, which require a switching process, and io Ausl. the gate 1 // 3 of the internal connection, in order to carry out this switching process to set JVS is influenced so that the amplifier enables a temporary shutdown of the D VJ 3 the holding potential must be made from the ti wire of the column scanner. line AS is switched off, which causes the dropping of the

If one of the two participants hangs his listener, this results in a KS coupler relay. The inner joint

on again, the internal connection set JVS 15 connection set JVS is thus activated after the

(Fig. 7) triggered on both sides and that subscriber Tins to the exchange connection set A VS and

Subscriber who has not yet hung up his handset is released again to the exchange line AL. The

has, receives the loading relay T in the subscriber line circuit from his subscriber circuit

setting marks. through the exchange connection set A VS

The activation of the participants from the indoor ao switched RF wire further.

JVS connection set is carried out by disconnecting the incoming communication during the exchange

Holding wires d of the charging pulses for a connection are used by the charging switch

taken column lines AS and LW, so that GbW (Fig. 8) added and used to operate the

in the connection case described above, the counting contact zä evaluated. The transfer of the

Coupler relays K5 and KI drop out. As a result, 35 charge impulses become a subscriber or one

The subscriber relay T of the two subscribers assigned to the subscriber is carried out by the counter

»Excited, and only for the participant, for whom the high-impedance connection of negative potential is on

If the relay T drops out, the loop is still closed, the c-wire, since in this c-wire there is a high-resistance Wi-

the busy signal is activated. derstand Wi is inserted. Through this high resistance

If the extension participant takes TIn 2 to connect counting pulses, the others will be

position of an exchange connection from his handset, so via the c-wire transmitted signals to the control

is first in the manner described above to establish the connection and to monitor the

Interconnection set JVS (Fig. 7) occupied and the connection not affected.

Subscriber TIn 2 by activating the subscriber Builds the extension subscriber TIn 2 after

Amplifier TV in FIG. 1 via the crosspoint with 35 through-connection to an exchange connection set A VS

the coupling relay KS to the internal connection set JVS itself that leads to the desired public subscriber

switched through. After sending out the dial-up connection by Wa ^M the public number on, so

sign for the subscriber TIn 2 , the latter dials the official number is a conversion of the tactile dialing digits into im-

code number required by the TWJ touch- tone receiver of the pulse. This implementation takes over a

Internal connection set / FS added and in the 40 not shown dial converter ARg, dei

Memory with the memory elements FS / 1 to FS / 4 can also be referred to as an external register. the

is saved. Connection of the voting converter ARg to the

If now the central scanner ZA (Fig. 6) chereinrichtungen FSaI to FSa4 of the trunk connection

via the line re \ the internal connection set / FS connection set A VS (Fig. 8) takes place via a register

from, the exchange code 45 stored there becomes the switching matrix Rg-KF. The touch dial indicator self

output and in the signal decoding SES to are recorded by a touch dial receiver TWA .

Activation of the line Fl Ums.Amt evaluated. taken, in the memory elements FSaI to FSa4

The activation of this line means that one is stored in each other and via the transmission

Switchover of the calling subscriber from the voucher lines OaI to Va 4 to the external register AR $

len internal connection set transferred to an exchange connection 50. In this external register A Rg takes place

latz A VS in Fig. 8 should be carried out. Implementation in pulse series, which is sent by the relay S de:

To identify the subscriber Tln2, whose exchange connection set A VS accepted and mil

Switching to an exchange connection set A FS transfers the contact s to the exchange line AL

is required, the output of the amplifier is to be Rel .

tn the c-wire connected to the column line AS, so 55 It is, as already mentioned, also a locking 4 ate on the c-wire the row line ZL2 in FIG. 1 device SPE for monitoring the fluspotential of a "to the input of Subscriber amplifier subscriber selected directional code in front of the TV of the calling subscriber TIn 2 is switched on. In the exemplary embodiment, the digits become of the public telephone service, in such a way that the connection circuit is monitored on the control line id , that certain subscribers have their negative potential removed, which is not possible by dialing these digits together. The connection of the control line id via the diode would give these digits from the dial converter , -4i? £ ir D 60 with the signal lineF lUms.Amt of Fig. 6 the locking device SpE takes place via ent speaking • follows. In addition, the signal line Fl Ums.Amt 65 is blocking input lines si 1 to 5/4, which are also linked to the starting line with the blocking lines 1, 0, 9 via diodes via the switching amplifier SF6. A development A Wan is linked, which is then always carried out via an AND gate evaluation of a DVA 2 arising in the dial converter A Rg as a function of the direction code already made

when the central scanner ZA of the Γ ι g. 6 »» f has set the input amplifier Kc 3 of the storage device SpE (Fie 8). The output of the amplifier ReI is connected via the dial converter ARg and the register coupler R ₈ -KF to the c-wire, via which, as described above, the subscriber amplifier TV of a subscriber circuit connected to the connection set A VS can be activated. . . ..

The output lines 1, 0, 9 of the blocking device SpE are on the other hand in the diode array TB of FIG. l, which evaluates the authorization of calling subscribers, linked to the e-wires of the row lines Zl 1 to ZIm via the diodes, the arrangement of these diodes being dependent on the authorization of the individual subscribers. In the exemplary embodiment, it is assumed that subscriber ™ i2 should be entitled to select number 1, subscriber TIn 1 to select number 9 and subscriber Tlnm to select number 0. If the scanner ZA now switches on potential to the input amplifier ReI of the blocking device SpE via the line re3, this potential reaches the arm connection set / 1KS via the wire RÜ when any one of the three digits 1, 0 or 9 is selected and causes the trigger there in a manner not shown the connection. Only when a corresponding Uerechtigung is present, is first followed for the locking device SpL · switched through c-wire re-activation of the subscriber amplifier TV, whose output potential line via the diode D 3 in the case of a call by the subscriber Tln 2 to the output 1 of the blocking device SpE given w.rd and in this prevents eiriι triggering potential for the exchange connection set A VS from being switched on to the line RU . In the same way, when the subscriber dials 9 and 1, TInX dzw. Tlnm prevents the busy trunk connection set from being released. If the extension subscriber wants 77 /! 2 hold a query about the subscriber Tlnl during the exchange call, he has to press the function key provided for this purpose and thus saves a corresponding identifier in the form of a number in the storage group FSa 1 to bba * of the exchange connection set A VS (Fig. 8). If the relevant exchange connection set A VS is scanned by the scanner ZA via the line rel , the stored query criterion reaches the signal decision SES of FIG. 6 via the code lines dl to clA and activates the signal line FlRückfr there. This line is coupled to the control and signal lines id, ASan and Tran via diodes. The first line id is used to determine the calling station, since the line id is linked to the c wire of the row line Zi2 via a decoupling diode D 85. The c-wire of this row line Z / 2 is at the output of the amplifier Re 2, which is activated by the scanner ZA when the line re 2 is occupied, so that this potential also activates the subscriber amplifier TV in FIG. 1 and enables switching on of switch-on potential for the coupling relay K 5 in F i g. 3 is being prepared.

Via the signal line ASan , a free internal connection set JVS and the opening of the gate circuit W 1 are again carried out, so that the coupling relay K5 can respond via its winding I via the switching amplifier DVJ , which is held via its winding II and the contact k 54 and in addition, the speech and identification acler switches through.

Via the signal line Tran, which leads to all trunk connection sets A VS , isolating relay Tr of that trunk transmission is switched on to which the scanner ZA is set. The contacts trl and open tr2 and thus raise the sprechmaßige Πυα-hschaltung the subscriber Tin2 to Amtsverbin-.0 Ground Kit A VS and thus aut external line AL Isolation relay Tr maintains itself via its holding contact tr 3 so that the c-wire for the duration of the query call remains switched through to the exchange connection set A VS.

, <After the participant TIn 2 has been switched through to an internal connection set JVS (Fig. 7), this participant receives the dialing character from the internal connection set in the manner described above and can now enter the identification of the participant to be queried via the touch dial receiver TWJ in the memory group FSH to FSi4 When the internal connection set JVS is scanned by the scanner ZA (Fig. 6), in the manner described for the establishment of interconnections, the subscriber circuit of the subscriber to be consulted is marked with the subsequent connection of this subscriber via the column line LW to the occupied internal connection set / KJ .

If the inquiring subscriber himself ™ now wants to switch back to the waiting exchange line AL , he dials a specific code that is recorded in the internal connection set J VS occupied by the inquiry call. When this internal connection set is scanned via the line •, tune re 1, this reset character is stored and decrypted by the signal decoder SES (FIG. 6). The line FSUms.Aml is now activated, the activation of which causes the subscriber to switch to the exchange connection set A VS. Since the line Fl Ums Amt is also linked to the signal line Trab via the switching amplifier SVS , the holding circuit for the isolating relay Tr of the exchange connection set A VS (FIG. 8) is disconnected via this line. The 4S marking of this exchange connection set is successful! via the c-wire, which is still switched to the subscriber circuit durrbge during the consultation call and is in parallel with the c-wire of the spade line AS and the column line LW on the c-wire 50 of the row line Z / 2.

By dropping the isolating relay Tr , the subscriber will be able to speak to the trunk line again; AL interconnected. The tripping of the occupied internal connection set JVS (Fig. 7) takes place as with the switchover of a calling subscriber to an exchange connection set by activating the signal line Ausl.

However, if the inquired participant, in the exemplary embodiment the participant Tlnl, take over the exchange call, the inquiring participant, i.e. participant TIn 2, puts down his receiver This state, i.e. the hang-up in inquiry 6 ₅ in the memories FSi 1 to FSiA, holding the code number is given in the subsequent scanning of the inner connection set by the scanner ZA (Fig. f again in the signal decoding SES

in order to activate the line FiAusl. to effect. This line is linked to the control and signal lines id, AusL, Trab , that is to say, the subscriber to whom the waiting Arats connection is to be transmitted is initially determined again. Since the scanner ZA in FIG. 6 the internal connection set JVS of FIG. 7 is set, the corresponding identification potential is transmitted via the connected identification wire to the subscriber amplifier TV of the inquired subscriber in FIG. At the same time via the signal line id the corresponding blocking potential from the entrance of Teilnehmerverstörker "; TV removed, so dai3 now switch-on potentials via the TV amplifier! is provided for the coupler relay K 11 of this subscriber, which only finds the corresponding counter-potential in the exchange connection set A VS (FIG. 8). The air maintenance of this Gegenpoientials to the e-wire of the column line A H ¹ takes place over the line Trab, so that in addition to the disconnection of the isolating relay, the response of the coupling relay KH for the intercom taking the call can take place. The coupler relay Ä.11 holds itself üK-r the iJ wire in the manner already described several times. Since the signal line Ausl. , Which leads to the occupied internal connection set JVS (Fig. 7), is also activated during this process, the holding potential for the communication of the established inquiry ■■ '.cges is also removed in this internal connection set, which activates the internal connection set leads.

In order not to let the number of signals become too large, the same character combinations have been chosen for the signal "inquiry call" and the signal "switch to exchange". The scanner ZA in FIG. 5 decides whether it is a question of the initiation of an inquiry "or the switchover to the exchange" in each case by means of an appropriate abbreviation position the Siunal "switching to Office" can always occur only in -..- INEM internal connection kit. Demzufoiee is linked to the Sigrialcntsehlüssching SES also Fincabe place of origin of the individual signals in the Wcim? that the Ausgangslcilunc Jm in liinsiellung the scanner 7A Internal connection sets and the exit office at the setting of the scanner Z / 1; mf office connection ^ s ^ u / c are activated.

The only schcmati'-ch in the Fi ·.:. 3 answering switching station ^ Ap t a v ermitthing ^ vcrbindungssatz Vms / ugcordn I. the Miunhl to a column line VS as well as to a / heileileil 7.LV iuischaltbaren isi Fr can thus be switched both as a subscriber and as a connection set, and which Type of connection to carry out editing processes is necessary. depends on the type of operation. For incoming office calls or in general for connections that go through a connection set. \ Λ the communication! ~ mS as a participant and to ι Enlgeeemiahmi: vmi Wiin-:.: hen von l'eiinclimcrn,, t der Vermilthumssai / VmS Hs V'erbi; iduMgss! it / to ^ 'hold. Hei his circuit. k Ti'ilni'hmer lieut -τ i'ilxr the Ivnniakle des! \ npplerrelais KlO like a participant on the column line LG, while it can be connected to an exchange transmission A VS via the coupler relay Kn and the column line AW

If the switching station VAp wants to establish an outgoing exchange connection via the connection set VmS, it switches to the exchange connection point AW via the coupler relay Kn , while it is in the incoming internal traffic via the column line

ίο LW is interconnected with an internal connection set JVS (FIG. 7), if a calling subscriber dials the corresponding digit. The connection is then established in the same way as with internal connections between any two

Participants of the system. If, on the other hand, the place wants to reach any subscriber, it uses the column line VS of the switching matrix, in which it operates one of the coupler relays Kl, Kl or K3 , because the switching on of these relays corresponds to

- ■ ι corresponding allocation keys are provided.

In the incoming traffic from a subscriber, the message number provided for the call to the operator station is decrypted and evaluated during the scanning of the Innenverbindungssal7.es JVS to excite the Koppierrr'ais K 10. The switching set VmS thus has a subscriber circuit similar to that of the other subscribers. When an exchange line AL is allocated, the switching record Vms scans the respective extension number into an internal connection place.

Claims (1)

Patent claims: ! Circuit arrangement for telephone. > nslic special telephone extension systems; "i; a single-stage Rciaiskopplermatrix, whose Koppbrrelais over decoupling organs to a Core t: 11er of a subscriber connection circuit or line and connection lines assigned to a connection set are connected to a marking device for the successive cyclical marking of the individual subscriber circuits and connection sets and part! nehrnerc: '". enen electronic gate circuits «Cn. when setting the marking device to a calling subscriber station or iiif one the identification of a subscriberstoiie to be called containing connection set are activated, thereby gckennzeich 11 e f .. r, " that the output of such a gate circuit" probably leads to the iedn'-hmet'.i'itigen application of insertion potential, into the wire (r- A'c · ) a /.eücnlcitime (Z 12) as well as / ur vcrbin 5Γ) dung ^ sat / side addition of a corresponding Gcticnpntentials .m the corresponding Atlcr of that column line (AS or LW, F- "ig. 3) is evaluated, which is a free connection set or the connection set containing the identification of the subscriber to be called (JVS , Fie T) / ugc-'irdnct is. 2. Circuit arrangement according to claim 1, characterized in that <! Ie successively and cyclically (h taking place marking of the individual subscriber connection circuitry by decoding the coded Kcnnzeichnum formed by a central scanner (ZA) in the 'orilaiifenden Wcchsci the lie to and "lic MurkivMtiug the connecting bracket (JVS, AVS) through v \\ w tincmlierte, direct control of this SHL / e iluivh carried the Abiaster and that at diesel controlling a Verbindungssutzes a Viwa be saved marking of a m nifemlcn subscriber station (77» I) in which we saved the code used to identify a calling subscriber and a decoding device (/t'.S'l, Γ ig. S) / ui the connection of the to be called via a t \\\ marking of a calling subscriberU>IU> serving decoding device Subscriber parts to the connection term containing the identification of this subscriber (71 .V, Fig. 7) causing the output potential of the gate circuit assigned to this subscriber is au> gcvcrtet. ν Sch.iltuusiNiuuMilmini '. according to Anspi next to 1 inul 2. daduuh recognized viclmel, dal! ι Lm with the ilas liitschallcpotential Un ein lcilnehiuei- and / heileneieenes KoppvK-lais [K 4. Ii μ. M luhrenden Vein (■ · ' -Adel ^ \ eitunuL.MU · .λιι> μ..ιιι ^ der liattcrseh.i'luiK glcich / i'itij; iLmi Ausi'.ang another part of another part's own CiatieiNehalutiiü ( R ^^ · / ) 85. / '82. 1 1 g Π forms, noii the em entrance with the Km of the marking of a / u of a l'eilliehmerstelle durchgeseluiltelen W-ilMiidungssat / es {J \ S. Fig- ") an ideation this l'participation> parts enabling client potential leading vein U-vein) and em further fitic.ircs '■ * <■') via a signaling connection (St S. l'i μ. t>) with the know / eiJ ;! -nuncen u calling Teilnehmei tvw \ om caller cewünsehter \ erketirsruhiungen receiving Speiclwreinrichtungeii [R'Si .. />;.. 4 Figure ") of all N'orbindungssat.-e [Jl S. F £ 1... ""; A VS. F i g. S) \ is blind. 4 circuit arrangement according to one of claims 1 to 3, characterized in that when a subscriber control is taken on, an interim notification system is used. F is ;. ⁷ ) on an I \ ennerbmdungssai / \ \ VS. Fi a. 8) effecting identifier (Amtskemueichen) in the memory device ( FSi \ FS; 4) for the dialing code of the In · "-rnwrbin- instruction set (/ KV, Fig. 7) with the activation of the subscriber station concerned with a network connection set (/ I VS , Fig. 8) coupling line and subscriber link relay (Zi 12, Fig. 4) via an output (Fl Ums .Ami, Fig. Ei) of the .signal decryption device (SHS , Fig. 6), a disconnection signal (Ausl. , Fig. 6) causing the release of the external connection salt is transmitted into this connection set. 5. Circuit arrangement according to one of claims 1 to 3, characterized in that when a subscriber station is switched over from an external connection set (AVS, Fig. 8) to an internal connection set (JVS, Fig. 7), the identifier {.tiickrragef: cnn7cichcn ) in a memory device (FSa I ... 1-SaA. I 1 u. H) for the dialing codes ties [.xicnivcrhirulunt'ssiii / es (A VS.F i g. 8) with the \. insuhiihiint »of the. relevant subscriber station with -.riem internal connection set coupling / eilen- and tjilri'jhrn-own coupling relay (K 2. F 1 g. 3) via an output (Y- 1 inquiry, F i g. '<) of the signal connection device (.SY ^ 5, F i g. U) a rcnnsignal (Tran, f · 1 g. D) in this connection. ft. posture arrangement-; according to one of the claims! hi-, 5. dadurui α ^ Λ -.- nn / eichnet, that the ί iri-ei ': !! ^ po "eniial for the / rush and subscriber-own coupling relays (K2, ΑΓ5, KH. K 12. F - i g. 3. F- 1 L '. 4) Leading wire (e-wire) with the fkrechtiaung of the relevant subscriber parts as well as the' -on this subscriber station after the Dui'chsJialiLine / u an external connection ί. · 11''S '. Fig. H; selected dialing characters signaling signal lines (Aufv, F- "ig- 1: i. 0. 9. Fig. 2) is connected in such a way that! the f-.in ^ -iialtepotentiai for a coupling relay will not be effective. if, due to the authorization of the calling or called subscriber parts, a connection desired by a calling subscriber should not be established. In addition 8 sheets of drawings