DE1023795B - Circuit arrangement for a multiple usable switching network, e.g. B. a coordinate dialer in telecommunications, especially telephone systems - Google Patents

Description

The invention relates to a switching network that can be used several times in telecommunications, in particular telephone systems. Both the outgoing and the also handled the incoming traffic of the subscriber lines. While in outgoing traffic via the Subscriber switching network, that is to say via a switching stage, a subscriber line is interconnected with a free outgoing connection line, is used for production an incoming connection, an occupied line selector input via a line selector switching network and the subscriber switching network, i.e. via two switching stages, with the subscriber line required in each case tied together. Each switching matrix consists of several switching units. Appropriately, all coupling units have the the same number of coupling points consisting of relay contacts or contacts of a coordinate selector, z. B. 100. These crosspoints are arranged in two intersecting rows. Via the crosspoints of the subscriber switching matrix the outgoing connections and also the incoming connections run from the subscriber lines Connections to the subscriber lines. The invention particularly relates to manufacturing of connections to the subscriber lines (incoming connections). In known arrangements Incoming connections are made possible by a memory that stores the identifiers for the subgroup of the desired subscriber line and also for the line itself. Relay this Memory influence a control device that monitors the establishment of outgoing and incoming connections in a manner corresponding to the registered marks.

The invention now aims to use a memory for storing the identifier for the subgroup the required subscriber line, possibly also to store the identifier of this line (Ones digit) to avoid. This is achieved by the fact that several line selector inputs are common Switching network is divided into several switching units, over each switching unit at least one subgroup the group of subscriber lines served by the switching network is reached and that in each switching unit via the contacts of a crosspoint assigned to the occupied line selector input after recording the identifier of the subgroup of lines in a line common to all line selector inputs Control device is determined by relays of the same to be used coupling unit.

If several subsets of subscriber lines (e.g. two) are reached via each selector coupler, so according to a further embodiment of the invention in one of the selector coupler via the contacts of a further crosspoint of the over the certain

Circuit arrangement for a multiple

exploitable switching network, ζ. Β. a

Coordinate selector, in telecommunications,

in particular telephone systems

Applicant:
Siemens & Halske Aktiengesellschaft,

Berlin and Munich,
Munich 2, Witteisbacherplatz 2

Kurt Laas, Munich,
has been named as the inventor

Selector coupler reachable line subgroups determines that of the desired subscriber. Above this crosspoint is used by the subscriber lines that can be reached via the specific selector coupler determines the one to which the desired subscriber line belongs.

The identifier determining a subscriber subgroup is saved by closing the named coupling contacts assigned to the occupied line selector input

According to a further embodiment of the invention, the stored identifier is only evaluated when if the identifier corresponding to the ones digit of the desired subscriber line in the control device is recorded.

A further embodiment of the invention consists in that connections to subscriber lines are established via a selector coupler assigned to the occupied line selector input and the subgroup of the desired subscriber and a subscriber coupler assigned to the subgroup of the desired subscriber for outgoing and incoming connections and from the intermediate lines accessible via the latter via the Selector couplers for incoming connections are those whose crosspoints are in the (vertical) rows that correspond to the (vertical) row or rows in the selector coupler via whose crosspoints the storage of the subgroup identifiers takes place.
Other details of the invention can be found in the description of an exemplary embodiment.

The invention is applicable to all switching networks, regardless of whether the contacts of the individual switching points by electromagnetic relays, by crossing bars or rails or by switching on

709 878/102

3 4

intersecting selector coils (cross-coil coordinates - it is assumed that each coupler (coupling unit)

selector) can be influenced (closed). Contains 100 crosspoints, which are arranged in ten rows

In the exemplary embodiment described below are arranged,

are cross-coil coordinate _{selectors used at A Dfe participant coupler TKf}
those by exciting two crossing voters- 5 ^rsr '
coils at the intersection of these two coils - two subgroups each with ten subscriber lines ordered, made of magnetic material coupling - a group of contacts is operated for the outgoing traffic and the interconnection is assigned to intermediate lines, so the subgroups TGrI of an incoming line with one outgoing and TGr 2 (Fig. 1) the intermediate lines ZL1 to ZLlO, line, z. B. a line selector input with a * o ^ _6n subgroups TGrZ and TGrAi the intermediate free intermediate line and this intermediate line with linesZLIl to ZL 20 ..., the subgroups TGr 9 of the desired subscriber line, bring about. and TGrIO the intermediate lines ZL 41 to ZL 50.

In the drawings, there is an embodiment of the ten line subgroups

Invention shown. It shows 50 intermediate lines available. Ten couplers with

Fig. 1 the some subgroups of a group of sub-15 per 100 crosspoints could thus 100 subscribers

Subscriber lines assigned subscriber coupler TKp, operate lines.

over which outgoing and incoming connections for each subscriber line is a (horizontal)

are established, number of crosspoints available. It's ten

Fig. 2 coupler WKp, via which inputs to reach a subgroup of subscriber lines

Line selector with intermediate lines that can be routed to subscriber couplers TKp, e.g. B. available for the
connecting lines are interconnected,

Fig. 3 to 12 the circuit of subscriber lines, couplers, a control device and one over- ' ^e

transmission on an outgoing and incoming connection line. In detail are shown in 25 T »ll

Fig. 3 shows the equipment of some lines of the subscriber Tn 10

in the coupler

TKpI

τκρ 1

TKp2

the crosspoints

£ 11/1, hl / 2 ... k 11/10 £ 10/1, ft 10/2 ... £ 10/10 £ 29/1, £ 29/2 ... £ 29/10

Subgroups TGrI and TGr2, Tm29

4 shows the circuit of contacts of the call relays

of subscriber lines of the subgroups TGrI, TGr2, At each coupling point there are four made of magnetic springs

TGrIO and some 30 existing coupling contacts used for line identification.

Relay of a control device SE, the connection of each intermediate line to its

5 shows further details of the control device SE, the associated outgoing connection line is via

Fig. 6 excerpts the subscriber coupler TKp 1, a coupling point in one of the two subscribers

TKp2, coupler serving subgroups.

7 shows details of the control device SE for loading 35 to one coupler, e.g. B. TKp2, the two couplers

activation of the selector coils of the subscriber coupler TKp 1, TKpI and TKp2 can not be ten, but

TKp2 (Fig. 7) as well as TKp9 and TKpIO, only nine subscriber lines can be connected. the

Fig. 8 excerpts a transmission Uejab on a coupling contact £ 20/1, £ 20/2 ... £ 20/10 of the lowest,

outgoing connection line VL, the crosspoint rows for the subscriber lines

Fig. 9 excerpts the transmission Uejan on a 40 TnIl, Tnl2 etc., Tn21 ... Tn29 parallel coupling input to the line selector, point rows are not multiple switched. This coupling

Fig. 10 the switching means at the input of the selection contacts are used to interconnect the intermediate stage LW-El and the switching lines ZL 1, ZL2 ... to be controlled via this with the associated means of the control device SE, connecting lines FLl ₁ FL 2 .. .

Fig. 11 excerpts the incoming connec- 45 In each coupler, a selector coil is arranged for each of the crossing couplers WKp 1, WKp 5 and rows of coupling points to be used. WKp 6, via which line selector inputs with the So is provided: for the subscriber line T «ll the selector coil XIl assigned to the individual subscriber subgroups, for the subscriber line Tn 12 the selector coil X12 etc. connected to the subscriber lines via subscriber couplers, and for the intermediate line ZLl interconnectable intermediate lines 50 the selector coil Yl in the coupler TKpI and the voters, coil YIl in the coupler TKp2, for the intermediate line

Fig. 12 switching means of the control device SE, which ZL2 the selector coil Y2 in the coupler TKpI and the

take effect on incoming connections. Selector coil Y12 in coupler TKp2.

It should be noted that windings and contacts of relays parallel to the subscriber crosspoint rows are included in several figures. 55 Coupling point row with not multiple switched coupling. Furthermore, it should be noted that due to the contact load contacts the selector coil X20 is assigned,
Some relays, eg the relays GaI to Ga.5, auxiliary relays The fact that two selector coils Y are required for each intermediate line, but these are available for switching and description, results, as from the exercise mentioned above, have been left out. it can already be seen from the fact that every intermediate line of

60 the subscriber network connected to two couplers

tig. 1 and 2 lines can be reached.

After the call on a subscriber line, e.g. B. ordered subscriber switching network (Fig. 1) and also in TnIl, control of relays in a line control device SE assigned to the η line selector inputs in Figs. 1 and 2, which is the sub-selector switching network (Fig. 2) is a cross-coil coordinate - 65 group TGrI of the calling line and this self-dialer used. Each coordinate selector re-identify, and determination of the vacancy. B. ZLl, as well as the connection to these sub-groups of subscriber lines and the number ble connecting line FLl, the crossing of the outgoing connecting lines and the number of selector coils XIl, X20 and Yl, YIl are excited. Which of the inputs to the line selector is adapted. 70 magnetic spring contacts of the coupling points £ 11/1 and £ 20/1

will be closed. The holding coils HtI and HtIl are then excited, while the selector coils X and Y mentioned are switched off again.

In each subscriber coupler Tk f , a holding coil is assigned to each intermediate line. So are z. B. provided for the intermediate line ZL 1, the holding coils HtI and Hill .

In outgoing traffic there are two subsets of subscriber lines with a total of 19 subscriber lines together ten intermediate lines and thus ten outgoing connecting lines are available.

The incoming traffic to the subscriber lines of a group is handled via two switching networks, namely the line selector switching network shown in Fig. 2 and the subscriber switching network of Fig. 1. As well as the subscriber switching network from a number (ten) of similar couplers TKf 1 to TKf 10 exists, the line selector switching network also comprises a number of couplers WKf, each of which has the same number of coupling points as the subscriber coupler TKf, namely 100.

The number of couplers in the line selector switching network depends on the number of inputs in the line selector.

With ten line selector inputs LW-El to LFF-ZsIO, five couplers WKfI to WKf 5 are required, via which intermediate lines that can be used for outgoing connections, which can be interconnected with subscriber lines in the subscriber couplers, can be reached.

Each of the line selector couplers WKf 1 to WKf 5 could reach ten intermediate lines ZL if a common memory were available for the ten subgroups of lines that can be reached via the line selector. The identifier for the desired subscriber line would be recorded in this memory. Relays of this memory influence a control device which switches on the selector coils of the coupler and carries out tests during the establishment of outgoing and incoming connections in a corresponding manner.

In the present exemplary embodiment, however, the use of a memory for a group of subscriber lines consisting of η subgroups is avoided. This is achieved that can be achieved by each line selector input associated coupling points in a coupler WKfI over which, for example, the subscriber subgroups TGRI and TGr 2 accessible intermediate lines, the contacts of two coupling points, z. B. Ae 1/1, Ae 1/2, for control purposes only. In the couplers WKf 2 to WKf 5, via which the other subscriber subgroups are reached by the line selector inputs, only one coupling point (Ae 1/11 ... Ae 1/41) is used for control purposes. The contacts of the coupling points Ae 1/1, Ae 1/2, Ae 1/11 ... Ae 1/41 of the line selector input LW-El, which are only used for control purposes, are not connected to the contacts of the coupling points Ae 1/3 to Ae 1/10, Ae 1/12 to Ae 1/20 ... multiple switched.

When the line selector input LW-El is assigned, the

Participant subgroups through contacts
the crosspoints TnGrI and TnGr 2
TnGr 3 and TnGr 4
etc.
TnGr9 and TnGrIO Ae 1/2
Ae1 / 11
etc.
Ae 1/41

To which of the two subscriber subgroups with common intermediate lines the desired Subscriber line heard is identified via the contacts of the crosspoint Ae 1/1.

After determining the subscriber subgroup, the desired subscriber line, e.g. B. TnIl selected. Simultaneously with this selection, the intermediate lines that can be used are checked. If the intermediate line ZL 3 is determined to be used, so

ίο the connection is established via the coupling point Ae 1/3, the intermediate line ZL 3 and the coupling point All / 3. For incoming traffic, the 95 subscriber lines have a total of only 44 intermediate lines available, namely the intermediate lines ZL 3 to ZL10, ZL 12 to ZL 20 ... ZL 42 to ZL 50. The intermediate lines ZL1, ZL2, ZLIl, ZL41 are only used for this outbound traffic from the subscriber lines.

In contrast to the subscriber couplers TKf, bei

which the X coils are assigned to the subscriber lines and the Y coils are assigned to the intermediate lines, the X coils are assigned to the intermediate lines and the Y coils to the line selector inputs in the line selector couplers WKf. The holding coils He are also not provided on the intermediate lines, but rather on the line selector inputs.

This arrangement is of particular importance when, for a given size, the coupler, e.g. B. at 100, in ten rows of combined crosspoints there are more than ten line selector inputs.

With twelve line selector inputs, a line selector coupler WKf 6 is provided jointly for the inputs LW-EIl and LW-E12 and for all ten line subgroups TGrI to TGr 10. If the selector coils Xe are assigned to the intermediate lines, only ten selector coils Xe 1/6 to Xe 10/6 are required for the coupler WKf 6, via which the 44 intermediate lines must be reached.

If, for example, the selector coil Xe3j6 is energized for the purpose of establishing a connection via the intermediate lines ZL 3, i.e. to a subscriber in the subgroup TGrI or TGr 2, then couplings at the coupling points Ae 11/3, Ae 12/3, Ae 11/13, Ae 12/13 ... Ae 11/43, Ae 12/43 prepared. The selector coil Ye 11/1 determines that the coupling is to be effected via the coupling point Ae 11/3 with a subscriber of the subgroup TGrI or TGr2. Then the holding coil HeIl [I in the line selector coupler is excited and kept under current for the duration of the connection.

Figures 3 to 12

Since the control device SE is effective both for outgoing connections from subscriber lines and for incoming connections to the subscriber lines and connections in both traffic directions are established via the subscriber coupler TKf of FIG. 6, the establishment of an outgoing connection and an incoming connection is explained below.

I. Establishing an outgoing connection

1 and 2 it was explained that two subsets of subscriber lines, e.g. B. the subgroups TGrI and TGr2, the intermediate lines ZL1 to ZL10 are available.

After a subscriber calls, his subgroup is determined by one of the relays GaI to Ga 5 and Nl or N 2 (FIG. 4) of the control device SE . There speak z. B. on: on call off

7th Nl
N2
Nl
N2 relay Subgroup and GaI
and GaI
and Ga 5
and Ga5 TGrI
TGr2
TGr9
TGrIO

7. (Fig. S) +, 21ds, 22zu, 23as, 27 ph2, Gp2, ΪΡ2,

Assume that the subscriber on line Tm 21 calls.

In the call circuit (FIG. 3), the call relay R21 connected to the wires «« 21 and δ «21 via the contacts Ii21 and 2t21 responds . It closes the contacts 3r21 and 4/21 (Fig. 4). Relay N2 (Fig. 4) of the control device responds:

1. +, 4r21, 5abl, G2, 6nl, 1N2, Tran, 8ds, 9as, 10, -.

ΠΡ2, 28as, 29gal, 49pk2, ha2, (Fig. 6) - ^,.

HtVc

The relays PHl and PH2 (Fig. 5) are switched on in series with holding windings III of the test relays Pl and P2 . The free state of these intermediate lines is thus saved.

8. +, 30 «s, 3IiJw ₅ 32ds, 3301, IHPl ₅ IPFl ₅ -.

9. +, 30 "s, 312", 32ds, 3402, IIIP2, IPJ72, -.

The relays PH 1 and Pi? 2 lie in holding flow circles:

Relay iV4 (Fig. 5) responds:

2. +, 11 fs, 12ran, 13ds, UnI, 15n2, 16n3, IN 4, -.

By opening the winding IA ⁷ I (Fig. 4) upstream of the n4 contact prevents the relay Nl when a call from another line group, z. B. TGrI or TGr9, is excited.

The holding winding II of the relay Λ ^Τ 2 (Fig. 5) is switched on:

3. +, 11 fs, uranium, 35 «4, ΙΙΛ'2, -.

The winding I of the relay G «l is switched on:

4. (Fig. 4) +, 4r21, 5 «δ1, 17η4, IGaI, 8ds, 9as, 10, -.

Relay G «l closes a holding circuit via its winding II, in which the production of an outgoing Connection characteristic relay / 15 actuated will:

5. (Fig. 5) +, AS, 18n4, 19 «1, 20gal, UGaI, ~.

Opening the contact 9 «s (FIG. 4, circuits 1 and 4) prevents one of the other relays Ga 2 to Ga 5 from being energized from the subscriber subgroup TGr2 until the call is completed.

If two or more G «relays are switched on at the same time, e.g. B. GaI and Ga2, after the relay AS has responded and the contact 9as opened , only one relay Ga, in this case GaI, is addressed. This is achieved by the contact chain shown in FIG. The first excited Ga relay in the series GaI, Ga2 ... Ga5 , i.e. GaI, opens the holding circuit via winding II of each subsequent relay G «2, G« 3 etc.

After the relays GaI and AS have responded, the two subscriber subgroups TGrI and TGr2 jointly accessible intermediate lines ZL 1 to ZL 10 are checked. Free intermediate lines are characterized in that the holding wires hai [ZLl), ha2 (ZL2) ... «10 (ZIlO) minus potential across the holding coils HtI and Hill or Ht2 and Htl2 ... or HfIO and Ht20 (Fig. 6). The test relays Pl to PlO, which are present together for all ten groups with ten intermediate lines each, are applied to the holding wires of the group of intermediate lines to be tested through contacts of the relay GaI. The test relays connected to free intermediate lines respond. If, among other things, the intermediate lines in the subscriber coupler TKp2, to which the lines of the subgroup TGr2 are connected, the selector coil X 20 of the crosspoint row with the contacts that are not multiple switched as well as the selector coils Yl, YIl of the intermediate line ZLl and Y2, Y12 of the intermediate line ZL 2 are switched on:

11. (Fig. 7) +, l ^%, 53as, 54gal, xa20, (Fig. 6) X20, ^.

Yl Ϋ1Ϊ

Y2 ΫΪ2

12. (Fig. 7) +, 55 £ «1 ₅ 5601, yal, (Fig. 6) --—, -

13. (Fig. 7) +, 55g «1, 5702, y« 2, (Fig. 6) -----, -

Since a call from the subgroup TGr 2 has come in, the activation of the selector coils Y1 and Y2 in the subscriber coupler TKpI has no meaning. The coupling contacts of the coupling points £ 20/1 and £ 20/2, which are not multiple switched in the horizontal direction, close.

After completion of this first switching step, the delayed relay CLOSE (Fig. 4) picks up:

14. +, 39O ⁷ S, 40ss, 42, - ~ - _τ ~ ^ -, -. 41 to, KoI

It interrupts circuits 6 and 7 by opening contact 22m (Fig. 5) and circuits 8 and 9 by opening contact 31zu (Fig. 5). Contact 99zti (Fig. 5) bridges contact 13ds in circuit 2 of the relay N4. The relays Pl and P 2 drop out. The relay Pr responds via a contact chain formed from the normally closed contacts of the P relays:

15. (Fig. 4) -r, 442ZU, 4301, 4402, Pr

45010, 46 as,

55 To simplify the description, it is assumed in the following that only the intermediate line ZL1 was free. Accordingly, only the relay PHl is addressed. Only the contacts of the crosspoint £ 201 are closed.

When the relay PHl responds , the opening of the contact 48pk 1 (FIG. 5) results in the negative potential on the wire ha 1 via the holding coils HtI and Hill

ZLl and ZL2 free, the relays Pl and P2 6 ₅ speak have been disconnected by contact 26gel. For this purpose (Fig. 5) in the following circuits:. the contact 630Al with the wire cvl (Fig. 6, 8) of the

(Fig. 5) +, 21ds, 22zu, 23as,? A * hi r; /, i T P1 outgoing connection line couplable

IPl,

HPl ₅ 25 «s, 26g« l, 480Ä1, hai, (Fig.

HtU Yerbindungsleitung connectable wire czl with bridging of the rectifier G2I (Fig. 6) placed on the contact 26gwl (Fig. 5). The outgoing connection line FLl is checked.

9 10

When the relay Pr (Fig. 4) responds, the blocking function created in the control device

Circuit energized to test the outgoing connection potential:

line FiI closed: ₂ 3. (Fig. 5) +, 83 «*, 82ds, 7Us, 6901, ΠΡ1, 25as,

16. (Fig. 5) +, 21ds, 60zu, 61pr, 620M, GfI, IPl, 26gal, 630M, czl, (Fig. 6) GsIl, c (£ 21 / l), ca21

UPl, 25as, 26gal, 630M, czl, (Fig. 6) c (A20 / l), ⁵ (Fig. 3), Γ21, -.

cv 1, (Fig. 8) 64c, 65, -.

The relay ^ 4231 (Fig. 5) is the test time limit and 2t21 the call relay R 21 off. In the transfer

relay. It is on-delayed and the relay Pr of the connecting line (Fig. 8) speaks the feed bridge

switched on in the following circuit: io relais ^ l on, which by closing contact 90 «

TAß-t the tripping relay C switches on. Relay C connects with

17. +, 66pr, 67gel, 68, -p = =. , -. takt91c plus potential to wire cw I. This is

II OJ, Kojabi _a holding circuit for the relay T21 under the same

The winding II ^ l Bl is as a counter-winding to the winding-time short circuit of the winding II of the test relay Pl

I switched. The effect of the relay ^ 451 is produced 15 (Fig. 5) of the control device:

explained later _T ,, «.., _{c +} 24. (Fig. 8) +, 91c, ral, (Fig. 6) c (Ä20 / l), G ^ ll, c (Ä21 / l),

The relay P1 which responds when the connecting line VL 1 is free via current ca 21 (FIG. 3) T 21 - circuit 16 blocks by short circuit

Its high-resistance winding I with contact 6901 which is connected to winding II of relay P1, as can be seen from the power connection line VL1 to another circuit 23, positive potential via the connection. Plus potential is via the following route at takte832 «, 82ds, 71as, 69pl. The lower end of this holding winding IIP1: winding is (see also circuit 23) on wire cd 1,

18. (Fig. 5) +, 70p; 7Us, 6901, IIP1 ... f ^{n di} * f ° ™ ^ms Huspotential is switched on (current

^{7 r} circle 24). The only currently switched on winding II

The selector coils Yl and YIl are therefore short-circuited via current 25 of the relay P1. Relay Pl falls circuit 12 switched on. To identify the call from and the activation of the control device SE forwards the subscriber Tn2l of the group TGr2 .

Relay El from the all ten subgroups of partial Up to the activation of the holding coils HtI and HtIl

Subscriber lines shared relay group E1 to E 10 of the intermediate line ZLl, which is switched on after the relay PHl (Fig. 4) has dropped: 30, the connected coupling contacts are switched on

19. (Fig. 4) +, 442 «*, 44301, 74 <fe, 750r, 76g« l, 77 n2, ^den , ^ f ^ fl ™ ^ ™ ^ ²⁰ '} T ^de * ^! F "Gmppenmarkierader gm 2 78r29,.. 79,22 3r21 ^{Spu en} * 2J rad X20 held. The circuit of the holding marker wire «1, IEl, -. ^{S spools runs over the} following path:

Relay El places itself with its winding II in a 35 ²⁵ · ( ^Fi §- ⁸ ) +> ^91c - ^cvl · ( ^Fi g · ⁶ ) c (A20 / 1), czl, GzI,

Holding circuit via which the DS relay also responds:, ". , -, "" ,,.,, _Λ , - ^. _Λ > I

^y Fig. 5 480Ä1, hai, Fig. 6

20. (Fig. 5) +, 80as, DS, 81el, IIE1, -.

82 ds is by closing the contact, as the con- After the drop of the relay is GaI of the clock 83 is parallel to closed, positive potential independent of the contact 40 48fthl (Fig. 5) lying contact 448 gal overall Kontakt7O0r to the winding HPl (Fig. 5) applied. closed. With a further call from the subcontact 13 «s (Fig. 5) opens, contact 100ds closes. groups TGrI and ΓGr2 open contact 448g «1, but via contacts 100« 's and 101 η 2 the contact 35 η 4 is blocked because the intermediate line ZL1 is blocked and relay PHl in the circuit of relay N2 is bridged. can not respond, but not the contact 480Al.

The relay Pr (Fig. 4) was activated when it responded 45. The holding coils HtI and HtIl remain switched on,

Via circuit 15 in one of the chain of ^ contacts When calling from the other subgroups TGrZ bis

independent holding circuit switched on: TGrIO can indeed contact 480 /? 1 (Fig. 5) open when

ρ one of the intermediate lines ZLIl, ZL21 etc. freely tested

21. -f, 442zu, Sds, 85pr, -. becomes, but not the contact 448gel.

47, Ko 2 ₅₀ If the relay Pl falls after some fault

This circuit is opened by contact 8 ds which connects the calling line. Relay Pr does not drop out due to the fact that it is parallel to its winding connection line VL1 , so the capacitor-resistor arrangement located downstream of the relay Pr is switched on, with a long drop-off delay. During the release time of relay Pr , relay PS (Fig. 5) open effectively: the coupling contacts at the coupling points of other free 55 IFS -tested intermediate lines, e.g. B. £ 20/2 of the intermediate 26. +, 950p, 97m, 96g, 98, - , -. Line ZL2, because the circuit 13 for the selector '''coils Y2, Y12 was not closed again. . Relay PS then activates the control device SE . After the relay Pr has dropped, the selector is The contact 11 fs (Fig. 5) opens, for example, the holding current coil JT21, which is assigned to the subscriber line Tn21 60 circuits for the relays JV2 and ΛΓ4. is switched on: The fault can be caused by a not shown,

22. (Fig. 7) +, 52fr, 86ds, 87gal, 88n2, 89 * 1, xa21, counters switched on by relay PS are registered. (Fig 6) X 21 - If, after switching through to the connecting line VLl, the test relay P1 via circuit 16 does not

The selector coils X21, YIl and X2Q are now 65 responds because, for example, on the wire cw 1 the under current. connecting line is no negative potential, the

The connection line VL1 is thus also released via the control device SE. The an-coupling point £ 20/1 , the intermediate line ZLl and the delayed relay AB 1 speaks through circuit 17 coupling point £ 21/1 to the subscriber line Tn21 and opens with the contacts 5αδ1 or 103αδ1 switched. The isolating relay Γ21 of the subscriber line 70 (Fig. 4) controls the starting circuits for the subscriber

groups TGr 1 and TGr2. The relay DS responds, since the relays GaI and AbI are energized, via a second winding, not shown. When the contact 39 ds (Fig. 4) is opened, the circuit 14 for the relay ZU is interrupted. Relay ZU drops out and interrupts the holding circuit 21 for the relay Pr (Fig. 4). Now, as a result of the opening of the contact 99 (FIG. 5), the relay Ni also drops out. After opening the contact 66 ^ r (Fig. 5), the circuit 17 for relay ABl is interrupted. Relay .4.Bl has a long drop-out delay, because the discharge circuit of the capacitor Kο fab I now runs through windings I and II.4.B1, which are connected one behind the other and in the same direction. The winding 11 ^ 451 was connected in the excitation circuit 17 as the opposite winding to winding I.

During the time in which the starting circuits of the subscriber subgroups TGrI and TGr 2 are opened by the contacts 5abl and 103 from 1 , calls from the subscriber subgroups TGr 3 to TGrIO are dealt with.

four relays Al, Bl, Cl, Dl to be controlled by number current surges, the number current surges in code characters converting selection relay group and the switching of the relays in the Uefan transmission containing the feeder bridge for selected subscribers (Fig. 9), which z. B. serve the Rufstromeinschalt are not shown. A connection must be established with the subscriber Tn21 .

A. Choice of participant subgroup

As a result of the two current impulses of the series of ten current impulses , the selection relays A 1 and B 1 are excited in the relay group Al, Bl, Cl, Dl (FIG. 8). The contacts 131 a I and 132 δ 1 close. The control relay V is energized in a known manner while this series of current impulses is being recorded. It responds to the first drop of the bridge relay A and the closing of the contact 128 "and keeps its armature attracted in a known manner until the contact

After the relay ABl has dropped, an attempt is made again to complete the call from subscriber Tn 21 that was present for a long time after the end of the current impulse. is open. Through the contacts 129t) and 130t »are the

outgoing speech wires 133 and 160 switched off. if

II. Establishing an incoming connection these contacts close after the relay V has dropped, is

on wire 133, but not on wire 160 negative potential - when a line selector input is occupied (Fig. 9), 25 tial. The relay W in Fig. 10 responds:

28. (Fig. 8) -, Z, GaI, 131 «1, 135« 1, 129u, 133,

which is equipped with a transmission Ue / an and, for example, the input LW-E 1, is applied to the occupancy wire 114 in the occupying group selector, not shown, plus potential. This plus potential is z. B. switched on in the feed transmission Uefab (Fig. 8) of the calling station.

After a calling subscriber line has been switched through to the transmission Uefab shown in FIG. 8 and relay C has responded, it has applied positive potential to wire 111 with contact 110 c. By closing the contact 112c, the selection relay group consisting of the relays Al, Bl, Cl, Dl has been prepared for receiving number current surges for setting a group selector. The activation of the control relay V is prepared with contact 113c.

After the setting of one or more group selectors in series and switching through the wire 111 to the occupancy wire 114 of the transmission Uefan (Fig. 9), the relay RS is energized in the control device SE:

(Fig. 9) 136m, 137u2, 138, (Fig. 10) 139cw, 140s, IW, 12Ars, 125sl, 126 fs, +.

Relay Z in Fig. 8 has fault current. In series with the holding winding II W , the relay S1 of the control device SE responds:

29. (Fig. 10) - UW, 141ze ', ..., S1, 142 «, +.

27. (Fig. 8)

(Fig. 10) 116ck ;,

1152A, HOc, 111, ..., (Fig. 9) 114, 117sh gel, IRS, 119s3,120

121 The contact 125sl switches off the positive potential of the excitation windings I of all selection relays W. A contact chain is indicated by the normally closed contact 143w, which ensures that when there is a simultaneous request on several line inputs, only the PF relay switches itself on in a holding circuit that corresponds to the first line selector input in the series, e.g. B. LW-El, is assigned. Relay S1 or auxiliary relays S2, S3 (Fig. 12), which are switched on by this, separate the speech wires from their associated selection (Fig. 10) 45 relays W at all selector inputs and connect the speech wires to an access to the line selector inputs common to all line selector inputs Control device SE. This switchover takes place at some selector inputs from relay S1, others from relay S2 and others from relay S3. The changeover contacts are therefore only designated with the reference letter s in the line selector input LW-El shown.

The relay S2 (Fig. 12) responds:

Relay RS switches off the negative potential applied via resistor 123 by opening contact 122 rs and connects the PF relays of all line selector inputs to contact 124rs with positive potential via contacts 125si and 126 fs. It should be noted that when the line selector inputs are in the idle state, the PF relays are used for earth fault monitoring of the associated speech wires. After the positive potential has been switched on, the PF relays of all free inputs are prepared for receiving a request character sent by the feed transmission (Fig. 8) (- on one or both incoming speech wires).

Of the transfers Uefab (Fig. 8), with which

z. B. a calling subscriber is connected via the preselection stage 65 incoming speech wires 138, 154 from the winding I, and Ue fan, which is arranged on a line of the relay W, which the contacts 163 and 164 w closed selector input, are only a few switching - has pointed to the means consisting of relays A2, B2, C2, D2 . All details not absolutely necessary for understanding the selection relay group of the control device by opening the invention, such as contacts 140s, 148s and closing of contacts 149s, the circuit of the 70, 150s and 152sA, 153s / », arranged only by a rectangle, switched.

30. +, 144 / ^ s, 145s 1, S2, 146, -,
and switches on relay S3 (Fig. 12):

31. +, 144fs, 145sl, 147s2, S3, -.

The relay SH (Fig. 10) responds:

32. +, SH, 151s3, 120, -.

At the selector input LW-El (Fig. 10) are then the

When the control device is in the rest position, the capacitor Kos (Fig. 10) is charged:

33. +, 155jf, Kos, 156 f, 157a2, 158c2, 159, -.

Since after selecting the number "2" only on the wire 133 (Fig. 8) connected to the wire 138, but not on the wire 160 connected to the wire 154 (Fig. 8), only that speaks Relay A 2 (Fig. 10) on, but not relay C 2.

34. (Fig. 10) +, 142, 16If, 162 fh, 152sh, 163n, 149s, 139cw, 138, (Fig. 9) 137m2, 136cm, 133, (Fig. 8) 129w, 135 ^ 1, 131al, Gal, Z, -.

Relay Z only receives fault current in this circuit. Contact 157a2 opens, contact 165 «2 closes. With contact 166 «2 the holding winding II of the relay A 2 is switched on.

35. +, 167 sä, 166 «2, 114 2, -.

Relay F (Fig. 12) responds:

36. +, 144fr, 145sl, 168 «2, F, -.

With contact 169 f (Fig. 12) a holding circuit for the relay RS is closed:

TT 7? 9

37. ₊₎ 144 fs, 145s 1, 217 ?, 169 f,

is then available for recording the number current impulse series corresponding to the units digit »1«.

The relay FH also initiates the storage of the code signal identifying the subscriber subgroup TGr2 (relays A 2 and B 2 are addressed) by closing the contact 191 fh (FIG. 10).

The lines of the subscriber subgroup TGr 2 with the tens digit »2« are reached via the coupler WKf 1. In the two in Fig. 10, the contact pyramids shown a 2- and Ö2 contacts been redirected. The selector coil Ye 1/1 (Fig. 11) of the LW-El input is switched on in the following way:

41. (Fig. 10 +,

192 ?, 191 fh, 193ran, 194 «2, 195c2

By opening the contacts 161 f, 171 f (FIG. 10), the selection relays A 2, C 2 are disconnected, and by closing the contacts 172 f, 173 f , the selection relays B 2, D 2 are connected to the speech wires 138 and 154 brought. In addition, by opening the contacts 155 f and 156 / ", the charged capacitor Kos is applied in series with the operating battery to the windings I of the selection relays B 2 and D 2 , so that one or both relays respond when one or both speech wires 138, 154 the negative pole of the service battery in the transmission Uejab (Fig. 8) is switched on. Since the number "2" was selected, there is only negative potential on wire 138, so that only relay B2 responds:

38. (Fig. 10) -, 159, 158c2, 165 «2, 175 /", Kos, 174 f, IB2, 172f, 162 fh, 152sh, 163w, 149s, 139cze>, 138, (Fig. 9) 137m2 , 136cm, 133, (Fig. 8) 129z ;, 135wl, 132δ 1, GbI, 134, -.

With contact 176 δ 2, the holding winding II becomes 52 switched on.

The relay F has also switched on the delayed relay FH (Fig. 12):

240 ?, Mlran, 340δ2
196w, eyl / 1, (Fig. 11) Ye 1/1, -.

In addition, the selector coils Xe of all couplers WKp are switched on. The circuits of these selector coils are closed by the relay M switched on by the relay FH (FIG. 12).

42. +, 144fr, 145sl, 197fA, 198ran, M, -.

Relay M closes the contacts 199m to 202m shown in FIG. 12, among other things. A selection of the Xe-coils of a particular coupler WKP is not required because the candidate coupler WKP 1 is determined by the fact that, of the five selector coils Ye 1/1 to 1/5 of the input Ye LW-El only the coil selector Ye 1 / 1 is switched on. The selector coils XeI, Xel / 6, Xe2, Xe2j6,. .., Xe41, Xe42 are in the following circuits:

43. (Fig. 12) +, 20562,

XeI, -

206

199w, 207, (Fig. 11) Xe 1/6, 201 w, 210, (Fig. 11) Ze 41, - "

44. (Fig. 12) +, 203c2, 204a2,

208 ra »,

Xe2, -

200m, 209, (Fig. 11) ~ X ~ e2J6 ~ - 202m, 211, (Fig. 11) Xe-42, - '

39. +, 177 f, 178,

FH

Ko, 179

, 180rs, 181,

Relay FH separates selection relays 52 and D 2 by opening contacts 162 fh and 182 fh (FIG. 10) and applies positive potential directly to both speech wires 138 and 154 via contacts 183 fh, lMfh. In the transmission (Fig. 8) the relay Z responds:

40. (Fig. 10) +, 183 fh, 152sh, 163w, 149s, 139cw, 138, (Fig. 9) 137m2, 136cm, 133, (Fig. 8) 129u, 135m1, 131al, Gal, Z, -.

Relay Z causes the energized selector relays Al and Bl to be switched off. The selector relay group of Fig . 8 Since the intersecting selector coils Ye 1/1, XeI and Xe2 have a current flowing through them, the coupling contacts close at the coupling points ke 1/1 and kelj2. The contacts at all other crosspoints are not closed.

The activation of the two selector coils XeI and Xe2 indicates that a connection with a subscriber of the subgroup TGr2 is to be established.

When establishing a connection with a subscriber subset TGRI of Figure 10 in effect of the code symbol for the digit "1" as a result of a corresponding controller, not shown in the selection relay group of Fig. 8 from the selection relay. Energized only the relay A 2. Contact 205 & 2 is not closed, so that only circuit 44 is made, but not circuit 43.

In order to establish connections between the line selector input LW-El and participants in the various subgroups, the following selector coils are switched on in the line selector couplers WKp 1 to WKp 5 to store the identifier corresponding to the respective tens digit:

Α2 excited 15th - switched on XeZ Xe-I, 16 Selector coils Ye 1/1 Contacts actuated
at crosspoint TGr Α2 Selection relay - Xe2, XeI, Ye 1/1 fel / 2 1 - Β2 - XeIl, Ye 1/1 keljZ, keljl 2 Β2 - - XeIl Ye 1/2, Ye 1/1 kemi, kelß 3 Α2 - C2 - Xe21 XeI, Te 1/2 Ye 1/1 fei / 11 4th Α2 - C2 P2 Xe21, XeI, Ye 1/3 fei / 21 5 - Β2 C2 Ό2 Xe31, Ye 1/3, fei / 21, fel / 1 6th - Β2 C2 Ό2 Xe31 Ye 1/4, Ye 1/1 fel / 31, fel / 1 7th Α2 - C2 Ώ2 Xe41 XeI, Ye 1/4 fel / 31 δ Α2 - C2 Xe41, Ye 1/5 fel / 41 9 Β2 C2 Ye 1/5, fei / 41, fel / 1 10 C2

Since the selector coils Ye 1/1, XeI and Xe2 are switched on, it is indicated that the desired subscriber Tn21 belongs to the subgroup TGr2 , i.e. can be reached via the selector coupler WKf 1.

The completed storage of the code corresponding to the tens digit »2« · ao is indicated by the acknowledgment relay Q (Fig. 12), which responds via the following circuit:

45. (Fig. 10) +, 212w, eml, (Fig. 11) 213 (kelß), 214, (Fig. 12) GqI, 215f, 216ran, Q, -.

The contact 217 q (Fig. 12) opens the holding circuit via the winding II i? S. Relay RS drops out with a delay due to the capacitor-resistor arrangement lying parallel to winding II RS. By opening the contact 142rs (Fig. 10) the holding circuit 29 is opened via relay S1 and the winding II of the relay W. Both relays drop out. The holding coil hot (Fig. 11) is switched on:

46. (Fig. 8) +, 115 * A, HOc, 111, ..., (Fig. 9) 114, (Fig. 10) 116cw, ^117sh

Contacts 129 ν and 130 z, 'speaks to relay W via circuit 28.

The relay S1 is then energized via circuit 29. When contact 212 w (Fig. 10) is closed, relay S2 (Fig. 12) is initially prevented from responding, because this relay is short-circuited via the following path:

48. (Fig. 10) +, 212w, eml, (Fig. 11) 213 (fe 1/2), 214, (Fig. 12) Gq2, 225f, Gs2, 226ra «, S2, 145sl,

118 w '

220cw, edl, (Fig. 11) 221 (fel / 2) ehl, (Fig. 11) 374 (fel / lj

Helß, -.

₄₀

When contact 180rs (Fig. 12) is opened, relay FH also drops out with a delay. All actuated relays of the control device are switched off. It should be noted that the relay M (Fig. 12) drops out before the selection relays A 2 and B2 (Fig. 10).

After relay M has responded via circuit 42, if for any reason the acknowledgment relay Q does not respond and contact 96 q should not open, the relay FS (Fig. 5), which responds with a long delay, responds to:

47. +, 222ran, 223m, 224zu, 969, 98,

IIFS, Kolfs ''

Relay FS causes the switching off of the energized Control device relay.

If all relays of the control device are in their idle state, the relay RS (Fig. 10) responds again via circuit 27, because the selector input LW-El is still in the waiting state (relay Cw is not yet addressed).

B. Choice of line of the desired participant.

The calling subscriber sends the one-digit »1 « of the number of the desired subscriber, consisting of a current impulse series. In the selection relay group Al, Bl, Cl, Dl (Fig. 8) only relay A 1 is energized. After the negative potential is higher than the resistor 146 at the connection between contact 226 ran and relay S2.

If an outgoing connection is being established via the control device SE at this moment, one of the contacts 227-1 or 228-14 or 229 <fe (FIG. 12) is open. The relay Ran , which characterizes the establishment of an incoming connection, cannot respond to the positive potential on wire 214. The incoming connection has to wait. If, however, no outgoing connection is established, the Ran relay responds immediately. If an outgoing connection is currently being switched through, the Ran relay responds when the call is completed, ie the calling line is switched through to a free connection line.

49. (Fig. 10) +, 212a ·, eml, (Fig. 11) 213 (fel / 2), 214, (Fig. 12) Gq2, 225f, 227 «1, 228« 4, 229 &, I Ran, -.

Contact 226ran opens so that relay S2 responds via circuit 30 and then relay S3 via circuit 31. Relay SH responds via circuit 32.
circle:

50. (Fig. 10) +, 167sh, 230 "", Il Ran, -.

Relay M (Fig. 12) responds immediately via contact 231 ran:

Relay Ran puts itself in a holding current

^145S1 ' ²³² ?> ²³¹ ™ »> ^Μ ·

Since the relays Ran and M are now addressed, the selector coils XeI and A ~ e2, among other things, are immediately energized.

52. (Fig. 10) -j-, 212k ', eml, (Fig. 11) 213 (fel / 2), 214, (Fig. 12) 23ran, 200; », 209, (Fig. 11) - ^ -, -.

53. (Fig. 10) +, 212a- ', eml, (Fig. 11) 375 (fe 1/1), 235,

(Fig. 12) 234n ", 199?", 207, (Fig. 11) ~~ , -.

A e 1/6

With the response of the relay SH and opening of the contact 117sä (Fig. 10 - contact 118w is open)

g) g (g)

Closing the 70 open during the current surge absorption, the circuit 46 for the holding coil He 1/1 is interrupted.

The contacts of the crosspoints Ae 1/1, Ael / 2 are kept closed by the selector coils XeI and Xe2 .

While the code symbol corresponding to the number »1« is being recorded , the intermediate lines that can be used for incoming traffic are checked to see if they are free. First, the GaI relay responds.

54. (Fig. 10) +, 240 ?, 241raw, 242zu, 243 /%, 24Aw, egl, (Fig. 11) 245 (Ae 1/2), 246, (Fig. 4) IGaI, 8ds, 9as, 10, -.

Relay GaI lies with its winding II (Fig. 5) in a holding circuit:

55. +, Hfs, 247ran, 24.8m, 249n4, 19nl, 20gal, UGaI ₁ -.

Since only the intermediate lines ZLZ to ZLlO can be used for the incoming traffic, only the test relays P3 to PlO are switched on via the contacts 250gal, ..., 251gitl, because the circuits of the test relays Pl and P 2 run via contacts 25 as or 28 as of the relay AS, which is only switched on when an outgoing connection is established. As explained in Section I, the test relays of all free intermediate lines respond.

It is assumed that the intermediate line ZL 3, which is the first to be used when it is free to establish an incoming connection, is free. The test relay P3 is excited in the following way:

56. (Fig. 5) +, 21ife, 22zu, 2SIf, 253as, 254ph3, GpZ,

/ 773

IP3, IIP3,250gel, 255 # λ3, Ae3, (Fig. 6) - = - _TT , -.

HtIo

Contact 257 ^ 3 opens and contact 258 ^ 3 closes. Should further P relays (P 4, P 5) be addressed, only relay P 3 can hold, because through Opening of the contact 252 / ", which after receiving the Code character for the ones digit takes place, the excitation circuits of all test relays are interrupted. Plus potential is on the winding IIP 3 via the following path:

57. (Fig. 5) +, 259, 260zu, 261as, 2% 2pl, 26Zp2, 258 ^ 3, IIP3, 250gral, ...

When the delayed-on relay PH responds via circuit 39, as can be seen from the description of an outgoing connection, the circuit 40 for the relay Z is established, which in the transmission identifies the inclusion of the one-code character in the line selector coupler. There is also a circuit via the holding winding III P 3 and the excitation winding I of the relay PH 3 closed.

58. (Fig. 5) +, 264as, 265fh, 2 <fopZ, IIIP3, IPH3, -.

The relay NZ was switched on when the relay Ran responded :

61. (Fig. 8) +, 115zh, HOc, 111, (Fig. 9) 114, (Fig. 10) 116ew, 275üe /, ml, (Fig. 11) 274 (Äel / l), 273, (Fig 4) INZ, 272mn, 8ds, 9as, 10, -.

The relay N2 (Fig. 5) is switched on, the relay NZ is held.

ίο 62. +, Ufs, 247 ran, 285nZ, 286 ^ 4,

The connection through the subscriber coupler TKp2 (Fig. 6) is also from the relay Fi? initiated. Via the lower contact pyramid (Fig. 10), since only the relay A 2 is addressed, the output "1" is marked so that the relay E 1 (Fig. 4) responds:

63. (Fig. 10) +, 192 ?, 19IfA, 277ran, 278ds, 279 «2, 280c2, 281δ2, 282, (Fig. 4) IE1, -.

In the holding circuit via winding II El (Fig. 5) the relay DS responds:

64. +, Ufs, 247ran, 284as, DS, 81el, II £ 1, -.

Since the relays DS, N2 and El are energized, the circuit 22 is closed for the selector coil Z21 in the subscriber coupler TKp 2 (FIG. 6). The selector coil Z20 is not switched on because the relay ^ 4S is not energized. The selector coil Y13 assigned to the intermediate line ZL 3 receives current together with the selector coil YZ, but the latter has no effect:

65. (Fig. 7) +, 55gal, 288pZ, yaZ, (Fig. 6)

YZ YlZ '

The contacts of the coupling point A21 / 3 are closed. Relay CLOSED (Fig. 4), which is on-delayed, is parallel to relay DS and the holding winding II of relay El:

66. (Fig. 5) +, 11 / s, 247ran, 289, (Fig. 4) 290 «s, 42,

TO

41 to 'KoI'

In all selector couplers WKP which are the third intermediate lines of the individual intermediate line groups, ie for example the intermediate lines ZL 3, ZL 13, ..., ZL 43 associated selector spools Xe turned on. The circuit for the selector coils Xe 3 and Xe 3/6 shown in Fig. 11 is as follows:

59. (Fig. 12) +, 267 "", 268 ^ 3.269, (Fig. 11) - ^,.

The selector coil Ye 1/1 is already switched on in the following circuit:

60. (Fig. 10) +, 24Oq, 241 ran, 242zu, 271 fh, 270 gal, 196 w, eyljl, (Fig. 11) Ye 1/1, -.

Relay CLOSED limits the time for the connection through the subscriber switching network. It interrupts 242zu (Fig. 10) with contact to the circuit 60 for the coil selector Ye 1/1 and closes with contact 291 to a circuit through relay winding CW I:

67. (Fig. 10) +, 240 ?, 241 raw, 291 zu, ICW, 292 w, 293, (Fig. 9) 294cm, IU2, -.

Relay U2 interrupts a discharge circuit of the capacitor Kou with contact 295m2 and switches this capacitor with contact 296w2 in front of its own winding II. The relay U2 is kept energized in the charging circuit of this capacitor until the switchover in the transmission Uejan is carried out by the relay Cu .

Relay Cw (Fig. 10) flips its contacts. Under

By opening the contacts 139 cw and 185 cw, it separates the incoming speech wires 138 and 154 from access to the control device SE and switches these wires with the contacts 297 cw and 298 cw to the outgoing to the selector couplers WKpI to WKp 5

Speech veins eal, ebl through. By opening contact 116 cw and closing contact 299 cw , a holding circuit is closed via winding II Cw.

The contacts of the coupling point Ae 1/3 are closed 68. (Fig. 8) +, 115zh, HQc, 111, (Fig. 9) 114, (Fig. 10). 70 299cw, HCw, -.

709 878/102

Relay U2 (Fig. 9) opens contacts 137ίί2 and 186 u 2. It also closes a circuit for relay CU with contact 300 u2:

69. (Fig. 8) +, USzh, UOc, 111, (Fig. 9) 114, 300m2,

CU, -.

Contact 301 cu bridges contact 300m2. Contact 294 cu separates winding I of relay U 2 from wire 293 and thus from circuit 67.

The test relay Pu is applied to wire 293 through contact 303 cm. By opening contacts 136cz * and 187 cu , wires 133 and 160 are disconnected from wires 138 and 154 for the duration of the connection. The speech wires 133 and 160 are connected to the left transformer windings via the contacts 307 cu and 308 cm. The relay Ul (Fig. 8) responds to:

70. (Fig. 9) -1-, 302cm, 304, ..., (Fig. 8) 305, Ul, -.

With contact 306m1 it bridges contact 115 zh, which is opened by a relay (not shown). By opening the contacts 135m1, 188m1 and closing the contacts 309m1, 31OmI, the speech wires 138 and 160 are switched through to the right windings of the transmitter in the transmission Uejab.

The holding coil He 1/1 is switched on in the selector coupler WKp 1:

71. (Fig. 10) +, 311 cw, edl, (Fig. 11) 221 (ke 1/2), hot, -.

The acknowledgment relay Q is also switched on:

72. (Fig. 10) +, 311 cw, edl, (Fig. 11) 312 (^ 1/3), 313, (Fig. 6) 314, (Fig. 5) 25Ogal, IIP3, 258 ^ 3, 263 ^ 2, 262 ^ 1, 261as, 315zu, (Fig. 12) 316ran, IQ, -.

With contact 317 q a holding circuit is established via the winding HQ (Fig. 12):

The relay FH (Fig. 12) drops out with a delay. When relay S 2 drops out, the circuit of which is interrupted by opening contact 445 / Ά, relay S3 drops out with a delay. Contact 265fh (FIG. 5) opens circuit 58 in which windings IIIP3 and IPH3 are located. Both relays drop out. Since the relay SH (Fig. 10) has a delayed armature drop, the winding II of the relay Ran (Fig. 10) is only switched off when the holding coils Ht3 and Htl3 are switched on with certainty after the relay PH3 has dropped.

75. (Fig. 10) +, 311 "cw, edl, (Fig. 11) 312 (Ael / 3), 313,

Ht3

73. +,

, 145s 1, 317 ?, UQ, -.

40

Relay Q triggers the activation of the control device.

When the contact 232g- (Fig. 12) opens, the relay M drops out. The relay RS , which has been switched off by contact 217g, then drops out with a delay. When the contact 248m (FIG. 5) is opened, the circuit 55 via the winding IIG «1 is interrupted. Relay GaI drops out. When the relay RS drops out, the holding circuit 29 for the relay W is interrupted by opening the contact 142rs (FIG. 10). In addition to the relay W , the relay S1 also drops out.

In the line selector input LW-El , after the relay W has dropped and the contact 32Ow closed, the following circuit containing the relay Pu (Fig. 9) is established:

74. (Fig. 9) +, ..., 1Pu, WPu, 303cu, 293, (Fig. 10) 320 w, eel, (Fig. 11) 321 (Ael / 3), 322, (Fig. 6) 323 (£ 21/3), c «21, (Fig. 3) Γ21, -.

60

The call relay A 21 is switched off by opening contacts Ii21 and 2i21. Relay Pm closes its contact 324 ^ m and thereby blocks the selected subscriber line. The speech wires 138 and 154 are switched through to the right transformer windings via the contacts 325pu and 326-pu. In the transmission Uejan , ringing current is switched on to wires 138 and 154. After the selected participant has reported, he receives his feed current via the windings I and II of the relay SR.

(Fig. 6) 314, (Fig. 5) 255ph3, ha3, (Fig. 6)

Ht 13 '

After the relay Ran drops out, the other energized relays of the control device, such as ZU, El, N2, N3, also drop out.

Claims (10)

Patent claims: 1. Circuit arrangement for a switching matrix that can be used several times, ζ. B. Coordinate selector, in telecommunications, in particular telephone systems, characterized in that the multiple line selector inputs (LW-El, ..., LW-ElO, Fig. 2) common coupling field in several coupling units (selector coupler WKpI, ..., WKpS) , via each coupling unit (e.g. selector coupler WKp 1) at least one subgroup (TGrI, TGr2) of the group of (100) subscriber lines served by the switching network is reached, and that in each coupling unit (e.g. WKpI) via the Contacts of a coupling point (e.g. kelß) assigned to the occupied line selector input (LW-El) after recording the identifier (A2, B2 addressed) of the subgroup of lines in a control device ( SE) common to all line selector inputs through relays of the same the coupling unit to be used ( WKpI) is determined. 2. Circuit arrangement according to claim 1, characterized in that when each selector coupler (WKpI, WKp2 , etc.) is assigned to several subsets of subscriber lines in one of the selector couplers (WKpI) via the contacts of a further coupling point (ke 1/1) from the via the certain selector couplers (e.g. WKpI) reachable line subgroups (TGVl, TGr2) that of the desired subscriber (Tn21) is determined. 3. Circuit arrangement according to claim 2, characterized in that the storage of the identifier determining a subscriber subgroup by closing said coupling contacts assigned to the occupied line selector input (LW-El) (z. B. kelß and Ae 1/2) takes place. 4. Circuit arrangement according to claim 3, characterized in that the evaluation of the identifier stored via coupling contacts (A2, 52 excited) for the subgroup (TGr2) of the desired participant (T «21) takes place after the one digit in the control device (SE) (e.g. "1") corresponding identifier (A2 excited) is included. 5. Circuit arrangement according to claim 3, characterized in that a relay (Q) of the control device responds after storing the subgroup identifier via a coupling contact (213 ke 1/2) and the control device (SE) for receiving the one digit (*! «) Of the subscriber to be coupled line (Tn21) provides the corresponding code characters. 6. The circuit arrangement according to claim 5, characterized in that the control device (SE) controls both the production of incoming connections to subscriber lines and the production of the initiated by the calling subscriber lines (Tn21) outgoing connections via these lines associated Teilnehmerkoppler (TKPI for being able), and that during the production an outgoing connection (second connection) after storing the subgroup identifier to establish an incoming connection (first connection) a relay (Nl, NI, DS) identifying the outgoing direction of the second connection, the switching on of a relay identifying the incoming direction of the first connection being established (Ran) prevented (227ral, 228w4, 229ds, Fig. 12). 7. Circuit arrangement according to claim 1, characterized in that connections to subscriber lines via one of the occupied line selector input (LW-El) and the subgroup (TGr2) of the desired subscriber associated selector coupler (WKpI) and one of the subgroup (TGr2) of the desired subscriber (Tn21 ) assigned subscriber coupler (TKp2) can be established for outgoing and incoming connections and of the intermediate lines (ZLl to ZLlO) accessible via the latter via the selector coupler (WKpI) for incoming connections, those whose crosspoints (£ 21/1, k21j2) in the (vertical) rows that correspond to the (vertical) row or rows in the selector coupler (WKp 1), via whose crosspoints (Ae 1/1, kelj2) the subgroup identifiers are stored. 8. Circuit arrangement according to i \ .nspruch 3 and 7, characterized in that after recording the identifier (A2 excited) for the one digit ("1") of the desired subscriber number (Tn21) ir the control device (SE) via a memory contact (274Ae 1 / 1) of the selector coupler (WKpI) responds to a relay (N3) determining the subgroup (TGr2) of the desired subscriber (Tn21) and initiates the completion of the connection via the corresponding subscriber coupler (TKpI). 9. A circuit arrangement according to claim 1, characterized in that for line selector inputs (LW-EIl, LW-E12), which selector couplers (WKpI,. .., WKpS) assigned to several (two) subsets of subscriber lines cannot be served, Another selector coupler (WKp 6) common to all (ten) subsets of subscriber lines is provided, via which all intermediate lines (ZL 3 to ZL10, .... ZL 42 to ZL 50) assigned to the individual subgroups can be reached . 10. Circuit arrangement according to claim 9 for coordinate selector, characterized in that the further selector coupler (WKp6) only has as many selector coils (Xe 1/6 to Xe 10/6) to control the crosspoint rows in one direction (perpendicular) (e.g. Aell / 1, Ae 12/1, Aell / 11, he 12/11, ..., Ae 11/41, Ae 12/41 to Aell / 10, he 12/10, Aell / 20, he 12/20,. .., he 11/50, he 12/50) than in each of the other selector couplers (WKpI to WKp 5) for controlling the crosspoint rows in the same direction (e.g. WKpI: XeI to ZeIO for ten rows, .. ., WKp 5: Xe 41 to Xe 50 for ten rows) are required. For this purpose 10 sheets of drawings © 709 878/102 1.58