DE970749C - Circuit arrangement for telephone extension systems with dialer operation - Google Patents

Description

ISSUED OCTOBER 23, 1958

S 39916 VIIIaj2ia ^%

Rudolf Kraust, Munich

has been named as the inventor

The invention relates to a circuit arrangement for telephone private branch exchanges Voter operation with a voter assigned to the exchange line, on calling stations and on incoming ones Exchange connections to a call station to receive incoming exchange connections is set.

There are private branch exchanges with office dialers designed as rotary dialers, in which the Shutdown of an office voter on a calling station or on one to be received The point marked by the official attack is carried out by different relays via different stop arms.

Another known circuit avoids current branching by taking action an external voltage independent of the operating voltage is used; however concerns this not the incoming official traffic for voters with two directions of movement and Setting of the exchange dialer to the switching extension in two directions like a searcher.

The invention aims to stop the " Officials with two different movement

809 x 64-1 / 4

directions to the group of a calling subscriber or to the group of the "subscriber who to accept incoming exchange calls, to be carried out with simple means without wasting time. This is achieved nadh the invention in that a single relay to shutdown the Outside dialer to the contact group of a calling station with a common to all outside dialers, from the operating voltage consumption-independent external voltage source and from the Setting of the outside line dialer to a flagged for receiving incoming outside calls Intercom station with a second independent, in the same way, available for each exchange line External voltage is switched on to the same Sdhaltarm of the exchange dialer.

The invention achieves that the control of the relay to shutdown the public dialer on the respective group, both on-going to trunk connections and autih on incoming connections Outside connections to a call station that are marked for receiving incoming outside calls can be carried out using the same switchgear. In both operational cases control can be carried out at the same time; cross-checking is prevented. Farther it becomes possible for the shutdown of the official 'voter to a calling station and a night station to use the same relay.

An exemplary embodiment of the invention is shown in the drawing. This is a private branch exchange using dialers with two directions of movement. Internal connections run through the AS selectors [LW. Outgoing and incoming exchange connections are established via the exchange dialer AW .

Outgoing trunk connections

In order to establish an outgoing exchange connection from the speech station Nz , the call seeker AS is set in a known manner to the station to be called after lifting the handset. It is assumed that the station Ni is connected to the fourth contact of the seventh row of contacts. The decade switch arm dek / AS is in position 7. A test relay C, not shown, of the call seeker AS is energized. The feed bridge relay A is switched on via the subscriber loop. By dialing a certain code, the incentive to establish an outgoing exchange connection is given. After setting the line selector LW to the exchange code connection, the following test circuit exists via the switching arm c of the line selector LW:

i. +, IP, IIP, IPi, c / LW, 10, ΐΐδ, R, -.

The relays P, Pz and R become effective.

The code number connection is made via contact zzp

locked. By opening contacts 13 ^ 1, 14 ^ 1, the supply bridge relays Xj Y are switched off.

A metallic connection takes place in the line selector LW via the contacts 15 ^ 1, x6p 1.

The relay R of the exchange transmission switches on the winding Mz of the stepping motor for the exchange dialer AW :

2. +, Z ¹ JT, i8zi, zo.mz, Mz, -.

The voter AW begins his straight line movement. The contact 19 m 2 is opened one after the other and then the contact zomz is closed. When the contact 19m2 opens, the circuit 2 of the winding Mz is interrupted. The Mz winding is switched on via contact zomz wi:

i, Mz, -.

The selector AW now performs the straight-line movement until the switching arm dekjAW has reached the seventh row of contacts. In this case, the following test circuit is established for the relay Pr , which is fed by a special external voltage Kz:

4. + Kz, 21W, zzumz, z ^ tr, IPr, 24 ^ 3, dekjAW in position 7, dekjAS in position 7, RL, z ^ -pz, ajLW, -Kz.

Contact 25 fr is closed by relay Pr and thus winding Mz is switched on even when contact zomz is open. This shuts down the public line voter AW. The relay PH is switched on by relay Pr:

5. +, zöfr, PH, -.

Furthermore, the magnet M 3 is switched on:

6. +, z6fr, GL 14, Z ¹ JmO, M3, -.

The contact zymo is closed as soon as the selector AW leaves the rest position. The selector is reversed from a straight movement to a rotary movement by means of the magnet M3. The following holding circuit is established for the magnet M 3:

7. +, 28W3, zjmo, M3, -.

Via contact zgfih , winding Mz remains switched on even after contact 25 -pr has opened. When solenoid M 3 responds, circuit 4 of relay Pr at contact 24W3 is interrupted. The test circuit of the individual line is prepared via contact 30 ^ 3. When the relay Pr drops , the contact z $ fir is opened. The winding Mz is now switched on via contact 29 ^. The relay Pr interrupts the circuit 5 of the relay PH at contact 26fr. After a short drop-out delay, the contact 29 ^ is opened and thus the winding Mz is switched off. It is only the circuit 2 of the winding Mz. It starts the rotational movement of the selector by alternate switching of the circuits 2 and 3 of the windings Mz and Mz. Achieved the official selector AW the single line of the station Nz, so is the following, powered by the external voltage Kz Test circuit established:

8. + Kz, 2zn, zzumz, 23fr, IPr, 3o? »3, 31«, III Ci, 32r, afAW, 33, a / AS,. 15 ^ 1, ajLW, - Kz.

Relays Pr and Ci are energized. The relay Pr switches the winding Mi on even when the contact 2owi is open, so that the selector AW is stopped. Relay Pr switches on relay PH in circuit 5, so that contact 2gfth is closed in parallel with contact 25 ^ »-. The relay Ci creates the following blocking circuit:

9. +, 34CI, II Ci, 35MWI or 36 ", cjAW, 74, Äi, Ti, -.

Relay S is switched on by relay C1:

10. +, IS, IZi, 37Ä, 38CI, 39r, 40J & 2, 41CI, 42A, ¹ S II Xi, II S, -

Relay V 1 is switched on by relay S:

11. +, 43s, Vi, - ·.
20th

The relay Vi switches on the relay B :

12. +, 44 »i, B, -.

The circuit 1 of the relays P, Pi and R is opened at contact 11 δ. When the relays P and Pi drop out, the ASjLW selectors are released or returned to the rest position. The incentive line 10 of the code number connection is switched to a second exchange dialer via the contacts 45 b. When relay R drops out , circuit 8 for relays Pr and Ci at contact 32 r is opened. The relay Pr drops out. The circuits 2 and 3 of the windings Mz and Mi are opened at contact 17 r. At contact 39? - the circuit 10 of the relay S is interrupted. For relay S there is now the supply circuit via the call station Ni:

13. +, IS, IZi, 37A, ₃ 8ci, 46η b / AW, 47- Ni, 33, a / AW, 48r, 41CI, 42 A, II Zi, IIS, -.

The exchange line AL is switched through via contact 49s.

The following charging circuit exists for capacitor C10:

14. +, 501 * 2, 51η, Cio, 52 «, -.

For the purpose of setting the voters who are reached via the exchange line AL , the current surges picked up by relay S are transmitted via contact 49 s over the exchange line. When relay S drops for the first time during a series of impulses, relay V 2 is switched on:

15 · +, 53 »i. 54s, V2, -.

The charging circuit 14 of the capacitor C10 is interrupted at the contact 501 * 2. The capacitor C10 is connected to relay V 2 via contact 55 ^ 2. The relay V 2 remains during the rush current row in the working position, since the relay contact is open V2 54s for temporarily receiving power via the charged capacitor Cio. The relay V2 short-circuits the loop resistance Wi 1 via contact 56 ν 2 during the series of current impulses. If the contact 54s is open for a longer time after the end of the series of impulses, the relay V 2 drops out via the relay F 2 after the capacitor C10 has completely discharged, and the charging circuit 14 is restored.

70 Inquiry calls

If there is an exchange connection between the telephone station Nτ and the exchange line AL via the exchange dialer AW, the magnet M3 and the relays Ci, S, Vi and B are energized.

If the participant of the station Ni wishes to establish an inquiry connection to the station N 2 , he has to press the Tai button temporarily. The differential relay Zi in the supply circuit 13 of the call station N 1 is temporarily excited and an inquiry switchover device Yi is activated via contact 57 * 1. By opening the contacts 58yi, 59yi and closing the contacts 60 y 1, 61 yi , the switchover takes place from the exchange line AL to the inquiry line 62/63. With the aforementioned switchover, the call searcher AS is caused to adjust to the inquiry line 62/63. The test relay C of the caller AS is energized. The feed bridge relay A is switched on in the following way:

16. +, IA, bjAS, 63, 6iyi, Wii, 49s, 6oyi, 62. a} AS, Il A, -.

The exchange connection is held via contact 90 yi and resistor Wi 2. When the call seeker AS is set to an inquiry line, the contacts 64 w 11, 650 * 11 are closed.

The current surges for setting the line selector LW are picked up by relay S and transmitted through contact 49 s to the feed bridge relay A in the house connection set ASjLW. The line selector LW is then set in a known manner. During the series of impulses, the relay V2 of the exchange transmission in the circuit 15 or in the discharge circuit of the capacitor Cio is kept energized.

It is assumed that the station N 2 is connected to the third contact of the fifth row of contacts of the line selector LW . The decade no switching arm dek / LW is in position 5 after the setting.

If the call station N 2 is free, the test relay P of the line selector LW is energized. After the call has been made and the intercom station N2 has reported, the feed bridge relay Y is switched on.

Assignment

If the trunk call via the exchange line AL are allocated to the station N2, the iao participants in the telephone N 2 has to temporarily push the button Ta2. The differential relay Z of the house connection set AS / LW is temporarily energized. The relay Z is switched on:

i * 5 17. +, 66c, Z, 64 w 11/65 wii, 6jx, 68a, -.

At the same time, a circuit for the relays U and K 3 is established via the switching arm djAS:

, 65 ^ 11, 67λ ;,

18. +, K 3, U, 693/1, joumx, 71, 68 «, -.

A circuit for the relays UMx and ABx is prepared via contact 72 Ji.

If the button Γβ2 on the Ai2 intercom station is released, the differential relay X drops out. At contact 67 λ; the excitation circuit 17 of the relay Z is opened. During the release time of relay Z , relay Pi is switched on:

19. +, 66c, 732, 74y, II Pi, 75X, 68a, -.

Once energized, the relay Pi remains in the reverse current circuit of the line selector LW via winding I. The relay Pi opens the contacts 13 ^ 1, 14 ^ ι, so that the feed bridge relays X / Y are switched off. The metallic connection in the line selector LW takes place via the contacts 15 ^ 1, i6 ^> i.

When the relay X drops after the key has been pressed, the circuit 18 of the relays U and if 3 at the contact 67λ; opened. The relay K 3 drops out first. During the release time of relay U , relays UMx and ABx are switched on:

20. -j-, J2U, I UMx, 76 ^ 3, .4.Bi, -.

A hold circuit is established for the relay UMx, in which the relay UM of the house connection set ASjLW and the starter relay R of the exchange transmission are switched on:

21. +, 77 ^ 1, UM, GL 13, R, -.

, djAS, yx, y8umx, UUMx,

The winding I of the relay UM χ and all corresponding windings on all exchange lines are short-circuited via contact 8gumx. Therefore, during the transfer status on the exchange line AL , the transfer status cannot be established on any other exchange line.

In the release time of relay U , if the relay UMx is already energized, the blocking circuit 9 of relay Ci at contact 36μ or 35 umx is interrupted. The relay C χ drops out. The feed circuit 13 of the relay 5 is opened at the contacts 41c 1 / 38ei. The relay S drops out. Circuit 11 of relay Vx is interrupted at contact 43 s. Relay B is now kept energized by χ independently of contact 44D1 via contact 79. The inquiry switching device Yi is held via 86 at χ and 87 ei. The exchange dialer AW is returned to the rest position in a known manner, not shown. In the rest position of the selector, the contact 27 mo is open and thus circuit 7 of the magnet M3 is interrupted.

By switching on the relay R in the circuit 21, the windings Mz and Mx in the circuit 2 and 3 are switched on in the manner described.

If the exchange dialer AW reaches the row of contacts of the interrogated intercom station N 2, the relay Pr is switched on in the following way:

22. - \ - Kz, 8oumx, 23fr, I Pr, 24 ^ 3, dekjAW, line 5, dekjLW, 8xum, 82 ^ 1, - Kz.

When setting the exchange dialer AW to the contact row of the inquired office N ζ , a test circuit for the relay Pr is established, which is dependent on the second external voltage K 2 , while the test circuit of the exchange dialer AW when setting to a calling body of the External voltage if ι receives electricity.

Relay Pr switches on relay PH in circuit 5 and magnet M 3 in circuit 6. The magnet Ms, which causes the switchover from the linear movement to the rotary movement, is kept excited in the holding circuit 7. The magnet M3 opens the circuit 22 at contact 247 * 13. The relay Pr drops out. Circuit 5 of relay PH is opened at contact 26pr. The test circuit for the individual line is prepared via contact 30 m 3. If the relay PH is in the rest position again, the windings MzjMx are switched on again. The exchange dialer AW is turned into contact row 5. If the exchange dialer AW reaches the intercom station N 2, the following test circuit is established:

23. + K2, 8oumx, Z3tr, IPr, 30W3, 317J ₁ III Ci, 32 /, ajAW, 83, ajLW, x5px, ajAS, 62, 84MOTI, 85CI, -Kz.

Relay Pr shuts down the public line dialer AW via contact 25 ^? ·. The relay PH is switched on again in circuit 5. The following blocking circuit exists via relay C1:

24. +, 34CI, II Ci, 36 ", cjAW, Rz, Tz, -.

Relay S in circuit 10 is switched on by relay C 1. The relay Vx is then again energized in circuit 11. Relay Vx holds relay B in circuit 12.

The relay Ci opens the holding circuit at contact 87ei the inquiry switch Yi. The yi contacts are returned to the rest position.

By opening the contacts 6oyx / 6xyx and closing the contacts 58 y 1/59 y ι, switching back from the inquiry line 62/63 to the exchange line AL takes place. The circuit 16 of the relay A is interrupted. The relay ^, releases the house connection set ASJLW and causes the voters to be returned to the rest position. The circuit 21 of the relays UM, UMx and R is interrupted. These relays return the contacts to their rest position. The transfer status is ended. The holding circuit of relay ABx is opened at contact 8gumx. The following supply circuit exists for the N 2 call station:

25. +, IS, IZi, 37Ä, 38CI, A6r, bjAW, 91, N2, 83, ajÄW, 4ßr, 4ICI, 4Zh, II Xx, US, -.

The call station N 2 is now connected to the exchange line AL and can continue the exchange call.

When the connection is terminated, the circuit 25 via relay S is opened by hanging up the receiver at the call station N 2. The relay S drops out and interrupts the circuit 11 of the relay Vi at contact 43 s. The office dialer AW is returned to the rest position in a known manner, not shown. When the relay Vx "drops, the circuit 12 of the relay B at the contact 44DI is interrupted. The exchange line AL is now available for a new assignment.

Incoming trunk connection to Nx

If the station N 1 is z. B. intended to receive outside calls during the night, + potential is applied to contact 174 of the egg arm set ^. The switch NS is thrown. When a call is made via the trunk line AL , relay A 1 is energized. Relay H is switched on by relay A1:

26. +, IH, 92O.Z, 93p2, -.

The relay // holds on contact 94 h. E> the relay B is switched on:

27. +, 95 h, B, -.

The trunk line AL is blocked against other occupancy by opening contact lib. Relay // switches on relay Λ ';

28. -K g6umx, 97A, N, NS, - ·.

The relay 2V switches on the relay R :

29. +, 98CI, 99 /> 2, 100 ", GL13, R, -.

The winding M 2 in circuit 2 is switched on by relay R. After opening the contact 19 »2, the winding M 1 in circuit 3 is excited. The selector AW performs the rectilinear movement.

Since d · intended for the receipt of trunk calls telephone N τ at the fourth contact of the seventh row of contacts of the selector Official AW is connected, the official selector AW is so long incremented until it reaches the seventh row of contacts has been reached. The identification takes place here via the contact 101 n, which is connected directly to the line 7 of the multiple field of the decade arms of the selectors AS, LW and AW . If the exchange dialer AW reaches the seventh row of contacts, the relay Pr is energized in the discharge circuit of the capacitor C10. The discharge circuit of the capacitor C10 runs in the following way:

30. Capacitor C10, 101 », dekjAW in position 7, 24W3, I Pr, 23fr, 22umx, 102η, 1037z, capacitor Cio.

For the examination of the public line voter AW for the reception of public line connections marked

Neten microphone units use a different external voltage than when setting the selector AW to a calling unit. When setting the exchange dialer AW to a calling station, an external voltage Kz was used. When setting the exchange dialer for incoming exchange connections to the station Ni , however, the discharge voltage of the capacitor C10 is used. The already described shutdown of the selector AW in contact row 7 then takes place by relay Pr. Relay PH in circuit 5 and magnet M 3 in circuit 6 are turned on. The magnet M 3 causes the reversal from the rectilinear movement of the selector to the rotary movement. At contact 247713 the discharge circuit 30 is interrupted via relay Pr. The exchange dialer AW then executes the rotary movement. The individual line check of the exchange dialer AW for the night position takes place via switching arm d of the dialer AW. + Potential is applied to contact 174 of switch arm set d. If the switching arm d reaches the contact 174, ^ o the relays Pr and P2 are switched on:

31. +, 174, dlaW, 104W
II Pr, -.

105 vi, P2, 10611,

; . The relay Pr causes the shutdown of the currency ^(AW toddlers in the manner described above if the ϊ station Nz free, the test relay C is excited:

j 32. +, test distributor PV, ioyp ₂ , ICi, UC 1 ,: 35 umi or tfu, clAW, line 74, Ri, Tu

The blocking circuit 9 is established via contact 34 c ι. The following call circle exists for the Nx intercom:

33. +, io8ä, 38C1, 46r, b / AW, 47, Nx, 33, ajAW, 48r, 4ICI, 109A, II H, RQ.

If the participant of the intercom station Nx answers, the opposite winding II of the relay H in the ringing circuit becomes effective. The relay H drops out. The hold circuit at contact 94A is opened. Circuit 28 of relay N is interrupted at contact 97 h. The relay N opens the circuit 31 of the relays Pr and P 2. The feed circuit 13 is established via the relay H via the contacts 42 h, 37 h . The relay Vx is switched on in circuit 11. Relay B remains energized in circuit 12. The call station N 1 is now connected to the exchange line AL in the same way as when an outgoing connection was established. The subscriber of the intercom station N χ can accept the request of the calling subscriber and transfer the call to another extension in the manner already described. The triggering of the connection is then again dependent on the feed bridge relay S.

Claims (5)

Patent claims: i. Circuit arrangement for telephony private branch exchanges with a voter assigned to the exchange line with two directions of movement, who is covered by the company spamming 809 641/4 Checks independent potential, characterized in that a single relay (Pr) for shutting down the exchange dialer (AlV) on the contact group of a calling speech unit with an external voltage source (K i) common to all exchange dialers and dependent on the operating voltage and when the exchange dialer is set to one for Receipt of incoming exchange calls marked with a second in the same way independent external voltage (C io) available for each exchange line to the same switching arm (deklAW) of the exchange dialer (AW) is connected. 2. Circuit arrangement according to claim i, characterized in that via the Schakann (deklAW) for checking the group of the calling party and the group for receiving office calls marked call station (N ij audh the checking of the group of the inquired at the Um.leger an existing one Exchange connection with a special external voltage (K2) takes place. 3. Circuit arrangement according to claim 1, characterized in that the test of the individual line of the call station marked for receiving office calls (Λ ^Γ ι) is carried out via an auxiliary switching arm (d) of the public office dialer (AW) . 4. Circuit arrangement according to claim 1, characterized in that a charged capacitor (C 10) is used as an external voltage for testing the call station (Ni) marked for receiving office calls. 5. Circuit arrangement nadh claim 4, characterized in that the capacitor (C 10) causes the delayed drop of the control relay (V 2) of the office transfer. Considered publications:
German patent specifications No. 696 236, 701 244, 705048, 717808, 816707; Fritz G o Zoll, »The W-PBXs in the Telephone Service ”, 1951. 1 sheet of drawings