DE1057662B - Circuit arrangement for telephone systems with connection dialers set by marking devices - Google Patents

Description

The main patent application relates to a circuit arrangement for telephone systems with connection dialers, which are assigned by the individual dial levels common marking devices, hereinafter referred to as setting sets, can be set. In the Arrangement according to the main patent application are the series of current impulses sent by the participant stored in a memory arranged at the beginning of the connection path. After the first one arrives Current impulse is connected to a wire of the connection path voltage and thus one of the following Connection level associated setting set requested. After the adjustment kit is based on the Connection device has been set, the stored series of current impulses are transmitted via the same wire transferred to the setting set by interrupting the connected voltage in pulses.

Should such a Fernspechanlage with other telephone systems, in which, for example, the Power surges are transmitted as earth pulses and not as power interruptions, so work together When they are interconnected, the current impulses arriving as earth impulses must first be converted occur in power interruption in the incoming transmission, which is known per se.

The object of the invention is to set up this transmission in such a way that it is as low as possible Expense the demands of a telephone system according to the main patent application, in particular the Requirement of the marking devices for setting the connection dialer met. Is achieved This is because after leaving the rest position of the memory at the beginning of the connection an incentive circuit closed for a multiple incoming transmissions common control device is that after setting on the stimulating transmission the starting circuit for one of a subsequent Connecting device associated marking device closes.

In that, according to this solution, the problem posed by the invention of the starting circuits is only closed by the control device for a subsequent marking device, this avoids that a marking device is stimulated before the control device required to transmit the current impulses is switched on to the transmission. These switching elements are only required to establish the connection are released after the connection has been switched through and can be used to establish a further connection be requested. This makes the effort necessary for the transfer itself Switching elements much smaller than when the switching elements of the control device of the transmission can be permanently assigned.

Circuit arrangement

for telephone systems with

set by marking devices

Connection dialers

Addition to patent application S 57272 VIII a / 21 a ³
(Interpretation document 1 053 040)

Applicant:

Siemens & Halske Aktiengesellschaft,

Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Kurt Laas, Munich,
has been named as the inventor

The figures show an exemplary embodiment.

Fig. 2 shows a block diagram of the telephone system shown in the main patent, while

Figures 1 a and 1 b show the circuit units of the invention.

First of all, the telephone system already shown in the main patent application should be referenced in FIG. 2 briefly explained:

As soon as the subscriber TN picks up the receiver to establish a connection, the call searcher AS is started and adjusts itself in a known manner to the connecting line of the calling subscriber. The call searcher AS is with the interposition of the feed transmission SpUe with a first group selector /. GW connected. The supply transmission SpUe, which switches on the microphone supply current for the calling subscriber, is assigned an electromechanical memory JW, referred to below as a pulse repeater. The pulse repeater saves the recorded series of numbered current impulses. After receiving the first pulse of the first series of numbered current impulses, as shown in the main patent application, voltage is switched on to the α-wire of the speech path and this causes the setting set ES assigned to the first group selector to adjust to it. After the set of settings has been set, a criterion sent for feed transmission, in the embodiment shown in the main patent application, is a current gain, the transmission of the first stored im-

909 527/111

pulse series initiated. The pulses are transmitted to the setting set as voltage interruptions. After recording the first series of impulses, the latter sets the first group selector to the decade determined by this series of current impulses and then releases it for free selection within the decade reached. After the first group selector has switched to a free second group selector //. GW has set the leading line, the supply transmission SpUe voltage is in turn switched on to the α-wire and the setting block of the second group selector is thereby started.

If a call arrives from an office of another telephone system via the connecting line VL , this occupies the transmission Ue. The series of current impulses arriving via the connecting line are picked up by the pulse repeater JW assigned to the transmission. After the first pulse has been received, a control device SE assigned to a plurality of transmissions is caused to adjust to the occupied transmission. After the control device SE has adjusted to the occupied transmission, the control device applies voltage via the transmission to the α-wire of the speech path leading to the first group selector. As a result, the setting set ES , which is jointly assigned to a plurality of first group selectors, is started and adjusts to the occupied first group selector. As soon as the setting record has reached the first group selector, the transmission of the first stored series of current pulses is again initiated by current amplification. This is, as will be explained in more detail with reference to FIGS. 1 a and 1 b, transmitted in the interaction of the relay arranged in the control device with the pulse repeater of the transmission.

FIGS. 1 a and 1 b show the switching devices required for forwarding incoming connections. Fig. 1 a shows the input transmission Ue, with a memory for storing the number streams sent out by the calling subscriber. 1 b shows the control device SE belonging to this transmission, which turns on via a switch-on selector with the switching arms Im 71 to Iw 78 after the transmission has been occupied and controls the further connection setup.

The storage arranged in the transmission has a storage magnet 1 EM, a storage magnet 1 AM and a marking magnet 1 MM . After the end of the first current impulse, the 1 MM marking magnet responds and presses the following lamellae, which are switched on during the series of current impulses, under a guide ring. At the end of the series of current impulses, the marking magnet is switched off and the last lamella remains above the guide ring and marks the end of the series of current impulses. During withdrawal, the withdrawal magnet IAM is excited in pulses and switches the test arm Ipk36 on step by step. When it hits a lamella above the guide ring, a circuit for relay 1 Y is established via this and the test arm, which marks the end of the series of pulses. The memory also has the rest position contacts 1 so 30 and 1 so 8. These contacts are actuated when the memory leaves its rest position or when the memory returns to the rest position after all series of current impulses have been withdrawn.

The transmission Ue shown in FIG. 1 a is occupied via c 3-wire from an input transmission (not shown), for example an alternating current transmission, by applying earth. The occupancy relay 1 Cu picks up via its winding II in the following circuit:

Wi 9, -.

c3 wire,

Iau7, Iso8,

ίο To the connection device below Leading occupancy wire c 104 is applied via contact 1cm27 earth

2. +, Ick27, c 104-wire, ...

The number current impulses are transmitted as earth impulses via the AL wire and cause the impulse receiving relay 1 A to respond in pulses via its winding I:

3. + ,. . ., al-Ader, Ia ⁷ MlI, 1 cm 13, isull.lAuI, -. 20th

It is assumed that the first series of pulses consists of six current surges. Relay IAu therefore picks up six times. When the relay IAu responds for the first time, the short circuit for the winding I of the occupancy relay 1 Cu is interrupted, so that this winding is switched into the circuit 1. Relay 1 Vu is switched on via contact low24, which remains in the following circuit after it has responded:

4. +, lew27, Iaw24, Ivu25, IVuII, -.

The winding I of the relay 1 Vu is short-circuited via contact lvu 25 , so that this relay remains attracted during the current surge pauses and drops out with a delay at the end of the current surge series. Furthermore, when relay 1 Au is triggered, the storage magnet IEM is excited via its contact IaM24:

5. +, 1cm43, 1öm42, lp _e 40, IEM, -.

The storage magnet attracts and advances the slats by one step. At the same time, as already mentioned, the rest position contacts 1 so 8 and lio 30 are actuated. The rest position contact Iso8 interrupts the short circuit of the winding I of the occupancy relay 1 Cu independently of contact 1 au 7, so that the occupancy relay 1 Cu is held via its windings I and II.

Voltage is applied to the starting line at 60 via contact 1 and 30 and a free control device, for example the control device SE shown in FIG. 1b, is started via this starting line. The starter relay of the control device responds in the following circuit:

6. +, 1 * 91, l /> 90, IAN, 1 ^ 89, ldS5, 1 »84, Ic81, aM60-Vein, Gr 28, 1cm 33, IiM 32, Iio30, Wi29, -.

At the end of the first pulse, the impulse receiving relay 1 A drops out and, by opening its contact 1 au 24, switches the excitation of relay 1 Fm, which, however, remains attracted due to its drop-out delay, and, via its contact law42, excites the storage magnet 1 EM (cf. 5). After the storage magnet IEM has dropped out, the 1 MM marking magnet is excited via its contact lew 39:

7. +, lew 43, 1om41, Iem39, Ivu37, IMM, -.

With the marking magnet IMM , the

slats switched on by the following current surges pressed under the guide ring. During the

the second and the following impulses, the marker magnet is held by its own contact 1 mm 38 in the following circuit:

8. +, 1m «38, Im« 37, IMM, -.

During each further incoming current surge, the storage magnet 1 EM (cf. current flow 5) is excited and switches the slats one step further. At the end of the series of elections, relay 1 Vu drops out with a delay and, by opening its contact \ vu 37, interrupts the holding circuit for the marking magnet IMM (see circuit 7 and 8).

As already mentioned (cf. circuit 6), the starting relay 1 AN of a free control device SE was energized when the first pulse was received. This starting relay switches on via its contact 1 on 156 relay 1 E :

9. +, 13/186, lan 156, Icl57, IE, -.

Relay 1 E switches off the starting relay 1 AN from the starting line at 60 (see circuit 6) and to the capacitor Ko 99 via contact 1 e 88 after it has responded by opening contact 1 e 89:

10. +, (# 0 99), 1 £ 91, lp90, IAN, 1 <? 88, Wi98, -, (Ko 99).

At the same time, the charging circuit for capacitor Kο 99 is interrupted by opening contact 1 e 102:

11. +, Ko99, ImIOO, 1 ^ 102, WiIOi, -.

By closing the contact 1 e 93, the test relay IF is connected to the test arm Im71. The field coils of the motor selector are switched on via contact 1 e 168. The field coils 1 Ma and 1 Mb of the selector drive are each arranged spatially offset by 90 °. An armature is rotatably mounted at the intersection of these field coils and is set in rotation by the magnetic fields generated alternately in the field coils. The rotary movement of the armature is transmitted by a gear transmission to the selector shaft and thus to the selector arms 1 m 71 to Im78 attached to it. The field coils are switched on alternately by the cam contacts 1 ma 169 and lmbVTQ controlled by the armature shaft. When both field coils are energized, the armature is braked and the selector is stopped. In the rest position shown, the field coil 1Mb is excited in the following circuit:

12. +, 1 ^ 168, imbVJO, 1Mb, -.

The field coil attracts the rotatably mounted armature. This opens the cam contact 1 mb 170 and closes the cam contact 1 ma 169, so that the field coil IMa is now excited:

13. +, Ie 168, Imal69, IMa, -.

The field coil 1 Ma in turn attracts the armature, whereby the cam contact 1 ma 169 is opened and the cam contact 1 mb 170 is closed, so that the field coil 1Mb is now excited again.

As soon as the test arm Im 71 reaches the step to which the transmission shown in Fig. 1 a is connected, the test relay IF can respond in the following circuit:

14. +, Gr 96, IFII, IFI, Ie 93, Im71-Arm,
61-core, 1cm33, lsuZ2, isoZO, Wi29, -.

stopped by simultaneous excitation of both field coils:

15. +, Ie 168, 1 /> 166, IMa, -.

"Further, the S Prüfhilfsrelais IPH to the test arm connected via contact Ip97 In the 71st through this low-impedance relays is checked again in order to avoid double settings. The Prüfrealis 1 P adheres over its winding in series with the I

ίο low-resistance windings I and II of the auxiliary test relay in the following circuit:

16. +, l /> 97, IPHII, IPHl, IPI ₁ 1 ^ 93, Im 71-arm, 61-vein, 1cm33, lsuZ2, \ soZ0, Wi29, -

By opening the contact 1 p 90, the discharge circuit of the capacitor Ko 99 is interrupted (cf. circuit 10), so that the starting relay 1 AN drops out. By closing the contact 1 at 86, the start line α «60 is switched through to the next free control device, which is started if another transmission is in use. The starter line α »60 is connected through to the continuing starter line at 69 in the following way:

17.cm60-core, Ic81, 1m84, Id85, 1αη86,
a «69 core.

Another control device can not be started by the transmission shown in Fig. 1 a, since the high-resistance starting relay IAN receives fault current, since after current flow 16, the low-resistance windings of the test relay IP and the auxiliary test relay IPH are parallel to this. By opening contact 1 at 156, the holding circuit for relay IiJ is interrupted after the starter relay has dropped out (see circuit 9), which drops out with a delay due to its drop-out delay:

When the auxiliary test relay 1 PH responds, the remote identification relay IF is connected to the switching arm Im74 via its contact lph 117. If it can be addressed in the incoming connection is a remote connection, SO 2 vein is in the upstream, not shown input transmission voltage to the & turned on, so that during arrival of a current pulse series (relay energized 1 Fm), the remote identification relay IF in the following circuit:

18. +, IF, 1/118, lph 117 Im74 arm, 64-core, 18 Iw, IAuIl, At 17, 2 & Vein. . ., -.

The relay 1 Au in the transmission Ue receives fault current and does not pick up. After the relay IF has responded, it remains in the following circuit via its contact 1/119:

19. +, IF, 1/119, £ 1 121, Icl62, -.

The occupancy relay 1 C was switched on after the auxiliary test relay IPH responded via contact lph 185:

20. +, 1 ^ 184, lph 185, ICIl, -.

Furthermore, voltage is applied via the contacts lph 150 and Iphl59 via the winding II of the relay 1 U to the wire a 102 leading to the following connection device in order to start the setting set assigned to this connection selector:

21.-, IUII, Iphl59, lphl50, li / 161, Idl45, Ii 148, Im 78-arm, 68-vein, ld «23, α 102-vein,. . .

By closing contact 1 /> 166, the. After the occupancy relay 1 C has responded, the

Field coil 1 Ma switched on and the selector thus 70 starting chain instead of circuit 17 via contact

1 c 80 switched through immediately. Relay 1 C remains independent of a response circuit via its winding I in the following circuit:

22. +, Ic 134, ICI, Im76-Arm, 66-Ader, 1cm54, Relay 1 V is held via contact lz> 179 and 1 ^ 180 regardless of its response circuit:

31. +, Icl83, 1m182, 1c181, It / 180, 1ζΊ79,

Relay 1 Su receives fault current in this circuit and cannot respond. After the delayed dropout of the relay IE , the previous holding circuit for the test relay IP and the auxiliary test relay IPH is interrupted by opening the contact Ie 93 (see circuit 16) and a holding circuit for the auxiliary test relay IPH is closed via contact Ic 92:

23. +, Ic95, IPHIl, IPHl, Ic94, Ic92, Im71-arm, 61-wire, 1cm33, IiM32, lso 30, Wi29, -.

By opening the contact 1 e 168, the field coils 1 Ma and 1 Mb are switched off, and the charging circuit for the capacitor Ko99 (see circuit diagram 11) is closed via contact 1 c 102.

After an adjusting device assigned to the following connecting device has adjusted to this, the relay 1 U picks up via its winding II according to current flow 21. The release magnet IAM is excited via contact Im 182:

24. +, Id83, 1m182, 1Ϊ115, lylll, Im73 arm, 63 vein, IiW 45, IAM, -.

Furthermore, the impulse transmitter relay is activated via contact Im 181 1 / switched on via its winding III:

25. +, Iel83, 1m182, 1w181, Iy 178, Ii 173, Gr 177, Wi 175, Ulli, -.

Relay 1 / does not pick up yet, however, because relay 1 / is counter-excited by the charging current for capacitor Ko 171 via windings I and II:

26. +, Ie 183, 1 u 182, 1 u 181.1 y 178.1 i 173, Ko 171, l / I, 1 / Π, -.

As soon as the capacitor Ko 171 is charged, relay 1 / picks up via its winding III and, by opening the contact Ii 173, interrupts the charging circuit for the capacitor Ko 171 and the holding circuit for the winding III (cf. current flow 25). The capacitor Ko 171 discharges in the following circuits once via winding I and on the other via windings I to III:

27. +, (# 0 171), Ii 172, WH7A, Gr 193, l / I, -, (Ko 171).

28. +, (Ko 171), Gr 177, JFi 175, 1 / ΠΙ, l / H, l / I, -, (Kο 171).

By opening contact Ii 115, the withdrawal magnet 1 AM is switched off and relay 1 V is excited via contact 1Ϊ116 and relay 1 U is held via its winding I:

29. +, 1p183, 1m182, Iill6, IUI, Icl62, -.

The holding circuit for winding II of relay 1 U is interrupted by opening contact Ii 148 (see current flow 21). At the same time, when this circuit is interrupted, a pulse is transmitted to the setting device that is switched on. After the relay 1 V has responded, the following circuit to the following connection device exists instead of circuit 21:

30. -, 1 (711, Iwl64, lz / 160, 1 ^ 145, Iil48, Iw78-arm, 68-wire, IcJm 23, α 102-wire, ... Via contact Iv 179, winding II of relay 1 V short-circuited, so that relay 1 V drops out with a delay after the holding circuit is interrupted. After the release magnet 1 AM drops and the relay 1 V responds, the following circuit for relay 1 Y is closed under the condition that the switching arm l /> £ 36 open a marked, ie on a lamella located above the guide ring.

32. +, law35, l /> £ 36-arm, 62-vein, iw72-arm, lvlO5, IFI, -.

Since, as already mentioned, the first series of current impulses consists of six current impulses, the sixth lamella is located above the guide ring, so that relay 1 Y ao does not respond after the first current impulse sent.

After the capacitor Ko 177 has been discharged, the surge transmitter relay 1 / drops out and switches the release magnet 1 AM back on via its contact Ii 115 (cf. current flow 24). This picks up and interrupts the prepared circuit for relay 1 Y by opening its contact 1 on 35 (see circuit 32). By closing the contact 1 i 148, relay 1 U is excited via its winding II (cf. current flow 30) and the current surge receiving relay is switched on again in the subsequent connection devices. Furthermore, the charging circuit for the capacitor Ko 177 is closed again via contact Ii 173, and relay 1 / picks up again after this capacitor has been charged and causes the second pulse to be transmitted. This and the following six power surges are emitted as described. If the withdrawal magnet 1 AM drops while the sixth pulse is being sent, relay 1 Y is energized after current flow 32 and interrupts the response circuit for the withdrawal magnet 1 AM by opening its contact 1 ^ 114 (see current flow 24) and by opening contact Iy 178 the response circuit for the impulse transmitter relay 1 /.

After the selector of the downstream connection device has been set, the holding circuit for relay 1 U (cf. circuit 30) in the setting set assigned to the downstream connection device is interrupted, so that relay 1 U drops out. By opening the contact 1 and 182, relay 1 V is switched off, which drops out with a delay due to a short circuit in its winding II. Furthermore, the starting relay IAN is connected to the wire a 102 leading to the following connecting device via contact Im 165. If the connection leads via the set connection device to an office of another system, in which, for example, the current impulses are transmitted as earth impulses via the AIO2 wire, there is voltage on the AIO2 wire and the starting relay IAN can respond in the following circuit :

33. +, Ιέ91, lp90, IAN, Ic89, la »86, 1m165, 1 ^ 160, Id 145, Ii 148, Iw78-arm, 68-vein, i, oilO2-vein,. . ., -.

First, however, consider the case that the connection remains in your own office and the subsequent ones Power surges are again transmitted as power interruptions, as already described. To

the delayed dropout of relay 1 V , the holding circuit for relay 1 Y is interrupted by opening contacts 1 ν 105 and Iv 109, which drops out. Furthermore, the response circuit for the switch-off relay is interrupted by opening the contact 1 ν 160 (cf. current flow 34). Relay IiV is connected to the b 103 wire via contact 1 ν 139:

34. +, Icl34, Icl35, IATI, Id 141, Ivl39, 1 ^ 138,

Im77-arm, 67-wire, 1cm22, & 103-wire, ...

If no further free connection line has been found by the subsequent connection devices, voltage is switched on to the b 103 wire as an occupancy criteria, and relay ITV picks up after current flow 34. First of all, however, it is assumed that all subsequent connection devices occupy a free continuing connection line and the connection is switched through to the line selector.

After the last digit of the last series of current impulses has been saved, relay 1 Y responds again, as already described, after circuit 32. Furthermore, after the last digit has been sent out, the hold circuit for the auxiliary test relay IPH (cf. circuit 23) is interrupted by opening contact 1 so that the auxiliary test relay IPH drops out. When this relay drops out, no further switching processes are triggered. At this point it should be pointed out that the auxiliary test relay 1 PH always drops out when the memory reaches its rest position. This can e.g. B. occur when the calling subscriber hesitates a little before sending the last digit and the previously transmitted power surges are already stored in the memory.

When the relay 1 Y responds after the last current pulse has been sent, the opening of the contact 13 ^ 114 prevents the release magnet IAM from responding after current flow 24 and the surge transmitter relay 1 / opens the contact Iy 178. After the line selector has been set by the last series of current impulses, relay 1 U drops out by interrupting the circuit 30 within the setting device assigned to the line selector. If the subscriber is free, voltage is applied to the AIO2 wire from the line selector, and the starting relay IAN can respond after current 33. Furthermore, by opening the contact Im 182 relay 1 V (cf. current flow 31) is switched off, which drops off with a delay due to a short circuit of its winding II. After closing its contact law 87, the starting relay IAN maintains the following circuit instead of circuit 33:

35. +, 1 * 91, IpOl, IAN, 1 ^ 89, lan87, Icl62, -.

After the delayed drop in relay 1 V , relay 1 Y is switched off by opening contacts 1 ν 105 and 1 ν 109. Furthermore, relay 1 N is connected to the b 103 wire via contact 1 ν 139 in order to record a busy criterion sent out when the subscriber is busy.

Relay 1 Y switches on when it drops out via contact 1JJ186 relay ID via its winding I:

36. +, Iv 186, lan 156, IDI, IE, -.

Relay IE receives fault current in this circuit and cannot respond. By opening contact Id 141, relay ID interrupts the response circuit for relay 1 N. Via contact 1 d 158, relay 1D closes a response circuit for relay 1 Sm and 1 Dm in the transmission Ue:

37. +, 13/186, law 156, ld 158, 1 ph 151, Im 131,

lz> 133, Im75 arm, 65 vein, Ivu53, lau 52, IDwII, ISmII, -.

By opening the contact 1jm4 the holding circuit for relay 1 Cu is interrupted, so that it drops out with a delay. The winding I of the relay 1 Dm and the winding I of the relay ISu are held via the c3 wire via contact Isu5:

38. +,. . ., c3-core, Isu5, IDwI, ISu I, Wi9, -.

The incoming AL wire is connected to the outgoing AIO2 wire and the incoming fc2 wire to the outgoing B 103 wire via the contacts 1 dw 10 and IdM 16 of the relay IDw. Earth is connected to the outgoing c 104 wire via contact Idw26, otherwise the earth connected via contact Icw27 will be switched off after the delayed dropout of the occupancy relay 1 Cm. After the delayed release of the relay 1 Cw, the wire 67 is disconnected from the b 103 wire by opening the contact 1 cm 22. Furthermore, the occupancy relay of the control device 1C is thrown off by opening the contact Icw54 (see circuit 22).

Relay 1 C interrupts the holding circuit for the starting relay IAN by opening contact Ic 162 (see circuit 35). Furthermore, relay ID is caused by short-circuiting its winding I via contact 1 c 157 to the delayed drop. After the delayed release of the relay 1 D, the starting wire at 60 is reconnected to the starting relay IAN via contact Id 85, and the control device can again be occupied by another transmission.

At the end of the connection, the transmission shown in FIG. 1 a is triggered by disconnecting the incoming occupancy wire c 3. The relays IDm and ISm, which were held after current flow 38, drop out. By disconnecting earth from the outgoing occupancy wire c 104 by opening the contact IdM 26, the subsequent connection devices are triggered. At the same time, opening the contacts 1 da 10 and 1 du 16 interrupts the connection of the speech wires. The transmission is idle after the two relays drop out and can be reassigned.

However, if all further outputs of a connection device are occupied while the connection is being established, then, as already mentioned, voltage is applied to the b 103 wire and relay ITV is excited via its winding I (see current flow 34). The winding I of the occupancy relay 1 C is short-circuited via contact Iw 136 and this causes the occupancy relay to drop out with a delay. At the same time, relay ISu responds via its winding II:

39. +, Ic 134, Im 136, Iw76 arm, 66 vein, 1cm54,

ISwII, -.

By closing the Isn5 contact, relay 1 Su is retained via its winding I and the incoming c3 wire, regardless of its response circuit:

40. +, ..., 3c-core, lsuS, Idw6, ISwI, Wi9, -.

g By opening the Isu4 contact , the holding circuit for the occupancy relay 1 Cm is interrupted (see circuit 1), which, however, remains in the following circuit via its winding III:

41. +, IdM47, ICmIII, 1 su 46, 63-vein, Iw73-arm, Iw 101, l <? 102, WiI (A, -.

909 527/111

Earth potential is applied to the incoming al wire via contact 1 su 15:

42. +, IjM 15, 1cm 13, ldull, al-Ader,. . .

Furthermore, by opening the contact
the hold circuit for the auxiliary test relay IPH in the control device SE is interrupted (see circuit 23), which drops out.

After the delayed drop in the occupancy relay 1 C in the control device SE , opening the contact 1 c 135 switches off relay 1 iV, which drops off with a delay due to its drop-out delay. After the relay IN has dropped out, the incoming starting line at 60 is switched through to the starting relay 1 AN via the now closed contact Im84 (see circuit 6). Furthermore, by opening the contact In 101, the hold circuit for the occupancy relay 1 Cn is interrupted in the transmission (cf. circuit 41), so that it drops out. After the relay IiV has dropped, the control device is again in the idle state and can be assigned again.

In the transmission Ue , after the relay 1 Cu has dropped out, the ground of the AL wire is switched off by opening the contact '1 cu 13 and the winding I of the relay IAu is connected to the AL wire via the closed contact 1 cu 12 (see current flow 3). The winding II of the relay IAu is connected to the f> 2 wire via contact lvu 21:

43. +, H ^ i 20, 1 Wi 21, IAuII, Idul7, & 2-wire, ...

After closing contact 1cm44, winding III of relay Au is connected to busy signal BZ :

44. +, 1 cu 44, Ivu4 &, IAuIII, 1 du 50, lsuSl, BZ.

The busy signal is inductively transmitted from winding III to windings I and II of relay A and from this to the subscriber according to circuit 3 and 43. Furthermore, when the occupancy relay ICm dropped out, the 1cm27 earth contact was disconnected from the outgoing wire c 104 and this triggered the subsequent connection devices.

If the calling subscriber triggers the already established connection when the busy signal is heard by hanging up his handset, the connection device upstream of the transmission disconnects earth from the 3c wire, so that relay 1. Su drops out (see circuit 40). Relay ISu drops out and switches off the busy signal by opening contact lsu 51. Furthermore, after opening the contact Ij w 5 and closing the contact lsu 4, the occupancy relay ICm is switched on to the c3 wire. If there are still stored series of current impulses in the memory, the contact Iso8 is open and the high-resistance winding I of the occupancy relay 1 Cu is switched into the occupancy wire. As a result of this high-resistance winding being switched on, this transmission cannot be occupied by an upstream connecting device. After closing contact lsu 32, relay 1 Vu is excited via its winding III:

45. +, law35, WuIIl, 1cm34, 1jm32, Iso30,

JVi29, -.

Relay 1 Vu responds and switches on the withdrawal magnet IAM by closing its contact lvu49:

46. +, 1cm44, 1 z / m49, 1jm45, IAM, -.

The release magnet 1 AM responds and advances the scanning arm 1 pk 36 by one lamella. At the same time, by opening the contact law35 relay 1 Vu is switched off, which in turn switches off the excitation of the release magnet 1 AM by opening its contact 1 vu 49. After the withdrawal magnet IAM has dropped, relay 1 Vu is re-energized after current flow 45 and switches the withdrawal magnet 1 AM on again. This interplay between the release magnet 1 AM and relay 1 Vu takes place until the memory is in the idle state again and contact 1 so 30 finally interrupts the response circuit for relay 1 Vu. By closing the contact 1 so 8, the high-resistance winding I of the occupancy relay 1 Cm is short-circuited, and the transmission can be reassigned by an upstream connection device.

In the above, the connection traffic between offices of a local area network was described. However, if the incoming connection does not come from an office in the same local network, but from a remote office, after the occupancy relay 1 C has responded in the control device SE , the remote identification relay 1 F speaks during the transmission of a series of rushes, as already mentioned, after circuit 18 on and holds after current flow 19. The further switching operations take place in the same order as they have already been described above. During the setting of the line selector to the desired subscriber through the last series of current impulses, earth is applied to the £> 103 wire from the line selector, and relay 1 G can respond via its winding II , since relay IF is energized:

47. +, ..., & 103-core, 1cm22, 67-core, Iw77-arm, Iyl42, 1m143, IGII, 1/152, Icl62, -.

After the last pulse has been transmitted, the auxiliary test relay IPH is released by opening the contact Ijo 30, and after the release magnet IAM has been released, relay 1 F is energized via contact law35 (see circuit 32). As already described, after the relay 1F has responded by opening the contacts Iy 114 and Iy 178, the transmission of further pulses is avoided. By opening contact 1 y 142, the response circuit for relay 1 G is interrupted, but this is maintained via contact 1 g 137, which is now closed and parallel to contacts Iy 142 and 1 «143 (see circuit 47). Furthermore, by closing the contact 1 y 187 relay 1 iV is switched on via its winding II:

48. +, Iyl87, lg * 188, IiVII, -.

Relay 1 N switches on by closing its contact Im 192 relay IK :

49. +, 1 «192. 1/191, IK, -.

The winding I of the occupancy relay 1 C is short-circuited via contact 1 η 136 and this causes the occupancy relay to drop out with a delay.

At the same time, relay ISu is switched on via this contact according to circuit 39. After the relay ISu has responded, RelaislG remains in the transmission via its winding I in series with winding III of the occupancy relay 1 Cm, regardless of its response circuit:

50. +, ldu 47, ICmIII, 1 ^ 46,63-AdCr, Im73-arm, 1 ^ 103, IGI

In 101, l <? 102,

WiIOA

After relay 1 K has responded, relay 1 F is held regardless of its response circuit (see circuit 32):

51. +, 1M06, lfclO5, IFI, -.

By opening contact 1 k 121, the hold circuit for the remote identification relay (see circuit 19) is interrupted and relay IF is connected to capacitor Ko 122:

52. +, (Ko 122), Erdleitung, IF, 1/119, 1 & 120, -,

The charging circuit for the capacitor Ko 122

53. +, Ko 122, IkYlZ, Wi 128, -

was interrupted when relay 1 K was triggered by opening contact 1 k 123. By applying earth to the al wire after circuit 42 and by applying minus to the & 2 wire after the following circuit, an end-of-dial pulse is sent out:

54 .--, Wi 128, Ik 124, Iw74-arm, 64-vein, Isul9, IAuII, Idu 17, b2-vein, ...

Relay 16 "m is held via contact 1 jm5 (cf. Circuit 40).

After the capacitor Ko 122 is discharged, the remote identification relay 1F drops out after about 150 ms and switches off relay IK by opening its contact 1/191 (see circuit 49), which by opening its contact 1 k 124 causes the end-of-election pulse to be transmitted (see circuit diagram 42 and 54) ended.

As soon as the line selector is set to the desired subscriber, relay 1 U drops after switching off the earth within the line selector (not shown) (see circuit 30). By opening its contact 1 and 182, relay 1 U switches off relay 1 V (see current flow 31), which drops out with a delay due to a short circuit in its winding II. Furthermore, when relay 1 U drops out, the starter relay IAN is switched on via contact Im 165 to the AIO2 wire (see circuit 32). The starting relay IAN cannot respond, however, as no counter potential is switched on in the line selector.

After the delayed drop in relay 1 V , relay 1 F is switched off by opening contact 1 ν 105 (see circuit 32). At the same time, the short circuit for winding II of relay 1 Y is interrupted by opening contact 1 ν 109, so that relay 1 F drops out without delay.

55. +, lwlO9, 1 ^ 108, IFII, 1 ^ 105, Iw72-arm, 62-wire, l /> & 36, law35, +.

Relay IDm is switched on via contact Iv 133 in the transmission Ue in the following circuit:

56. +, 1 * 132, 1 ir 129, l »130, Iv 133, Iw75 arm, 65 vein, 1 t / m 53, IaM 52, IDmII, ISu II, -.

Regardless of this response circuit, relay 1 Dm stays in series with relay ISu via its winding I via the incoming c3 wire (see circuit 38). After the contact Ia ⁷ M10 has been closed, the A1 wire is connected to the a 102 wire and via contact Ia ⁷ M10 the 62 wire is connected to the & 103 wire. Via contact Idu26 , earth is connected to the outgoing c 104 occupancy wire as holding potential. Finally, by opening the contact ldM47 of the occupancy relay 1 Cu in the transmission Ue and relay 1 G in the control device SE is switched off (cf. circuit 50). The occupancy relay ICm drops out with a delay as a result of a short circuit in its winding I via contacts Ia «7 and Iso8. After the relay 1 G drops in the control device, the response circuit for relay 1 Du (see circuit 56) is interrupted by opening contact 1 g 129. However, as already described, relay 1 Dm holds itself via its winding I after current flow 38. After the delayed drop in relay 1 N, whose hold circuit was interrupted after relay 1 F dropped out via its contact 1 and 187 (see circuit 48) , the starting wire at 60 is switched through to the starting relay IAN via the contact Iw 84 (see circuit 6). During the response time of the relay IiV, the starting wire aw60 was connected to the continuing starting wire at 69 via contact In83. After the relay iV has dropped, the control device is again in the idle state and can be occupied again.

The following briefly describes the switching processes that take place when a group selector does not find any further free connection device for an incoming remote connection. As already mentioned, in this case voltage is applied to the b 103 wire as the occupation criterion, and relay 1 iV responds via its winding I after the delayed drop of relay 1 V and closing of its contact Iv 139 after current flow 34. By closing its contact 1 «136, winding I of the occupancy relay 1C is short-circuited and this causes relay 1C to drop out with a delay. At the same time, relay 16 ″ m responds via contact Im 136 via its winding II (cf. current flow 39). Furthermore, via contact In 192 relay \ K is switched on after current flow 49, the relay 1 F via its contact 1 k 106 relay 1 F via its winding I switches on again (see circuit 51). Relay IF closes a holding circuit for relay IiV via its winding II via its contact Iy 187.

57. +, I3 / I87, 1 & 89, IiVII, -.

After the 1M21 contact has opened, the hold circuit for the remote number plate relay \ F (see circuit 19) is interrupted, but it is held by the discharge current of the capacitors Ko 122 and Kol27.

58. - I, ground line, IF, 1/119, l £ 120,
+ (Ko 127)

- (Ko 122)

Ig 125, Wi 126, - (Ko 127)

In the transmission Ue , when the relay ISu responded , its contact lsu 15 earth was connected to the al wire after current flow 42 and via contact 1jm19 voltage was connected to the b 2 wire after current flow 54. This initiates the transmission of an impulse to the calling subscriber. By closing the contact lsu 5, relay 1 Su is retained via its winding I, regardless of its response circuit via the c3 wire (cf. current flow 40). At the same time, the holding circuit for relay 1 Cu (cf. current flow 1) is interrupted by opening the contact IiM 4, which, however, remains after the contact 1JM 46 is closed via its winding III according to the current flow 50. Regarding current flow 50 it should be noted that relay 1 G is not addressed and therefore its winding I via contact 1 g 103 is not switched into the current flow. Finally, by opening the

Contact Isu32 the holding circuit for relay IPH (see circuit 23) is interrupted. The drop-out of the auxiliary test relay IPH does not result in any further switching operations.

After the delayed drop of the occupancy relay 1 C, the connection between the incoming wire occasion anöO with the further rise of core 69 is maintained rather than contact 1 c 80 via the contacts Ic81 and IN83. Furthermore, the response circuit for relay 1 Su in the transmission Ue is interrupted by opening contact 1 c 134. However, as already mentioned, relay ISu is retained via its winding I after current flow 40.

After the two capacitors Ko 122 and Ko 127 have been discharged after about 750 ms, the remote identification relay 1 F drops out (cf. circuit 58). Opening contact 1/191 causes relay IK to drop out (see circuit 55), which in turn is triggered by opening contact 1 k 106 relay 1 Y (see circuit 51) and by opening contact 1 £ 189 relay IiV (cf. . Circuit 57) brings to waste. Relay 1 N drops out with a delay due to its drop-out delay. By opening contact 1 k 124, voltage is switched off from the & 2-wire (see current flow 54) and the occupancy return pulse is ended. After the delayed drop 1 N , the holding circuit for relay 1 Cu in the transmission Ue (cf. current flow 50) is interrupted by opening the contact 1 η 101. Finally, by closing the contact In84, the incoming starting wire at 60 is switched through to the starting relay IAN (see circuit 6). The control device SE is now in the idle state again and can be occupied again.

In the transmission Ue , after the relay 1 Cu drops out, the same switching processes take place as were already described when establishing a local connection when a group selector cannot find any further free connection line (cf. current flows 43 to 46).

40

Claims (8)

Patent claims: 1.Circuit arrangement for the interconnection of two telephone systems with different current impulses, one of which is provided with connection selectors, which according to patent application S 57 272 VIII a / 21 a ^{3 are set} by several connection selectors common marking devices, one individually arranged at the beginning of the connection path on a transmission Have pass-through memory for the series of numbered current impulses sent by the subscriber and in which both a marking device is started via one and the same wire of the occupied connection path and circuits are closed to shut down the marking device and to transmit the stored current surges, characterized in that after leaving the idle position of the memory a Incentive circuit for a plurality of transmissions (JJe) common control device (SE) is closed, which after setting on the stimulating transmission, the starting circuit for a subsequent connection its associated marking device closes. 2. Circuit arrangement according to claim 1, characterized in that a closed contact (lso 30) when leaving the rest position of the memory closes the stimulus circuit for the control device (SE) . 3. Circuit arrangement according to claim 2, characterized in that a starting relay (IAN) responding to the stimulus circuit in the control device (SE) causes the control device to be connected to the transmission (via the switching arms 1 m 71 to Im78). 4. A circuit arrangement according to claim 1 and 3, characterized in that after the control device (SE) is connected in this responsive relay (IPH) closes the starting circuit leading via the transmission for a marking device assigned to a downstream connection selector (by means of 1 ph 150 and 1 ph 159). 5. Circuit arrangement according to claim 4, characterized in that the circuit for the relay closing the starting circuit for the downstream marking device (auxiliary test relay IPH) is interrupted (by means of Iso 30) when the memory in the transmission (Ue) reaches its rest position during the connection establishment . 6. Circuit arrangement according to claim 5, characterized in that when the auxiliary test relay (IPH) drops, the control device (SE) is not enabled. 7. Circuit arrangement according to claim 5, characterized in that with each drop of the test relay (IPH) a circuit for in the transmission (Uc) arranged through switch relay (IDu, ISu) is prepared (by means of lphlSl over 65 wire). 8. A circuit arrangement according to claim 7, characterized in that the circuit prepared for the switching relay (IDu, ISu) via a contact (1 rf 158) of a relay (ID) is closed, which by a after establishing the connection to the desired subscriber via the stimulus wire (α 102 wire) emitted return pulse (picked up by the starting relay IAN) is switched on (by means of lon 156). For this purpose 2 sheets of drawings © 909 527/111 5.59