DE728582C - Circuit arrangement for telephone extension systems with dialer operation - Google Patents

Description

Circuit arrangement for telephone extension systems with dialer operation Addendum to patent 719012 The main patent relates to a circuit arrangement for telephone private branch exchanges with dialer operation, with an exchange dialer to establish an outgoing exchange connection adjusted to the calling line and the incentive to stop and to stop the dialer on the contacts of the calling connection line is given via the voters for house connections and when initiating an outgoing Connection and occupancy of the house connection facilities auxiliary switchgear facilities become effective, which only the setting and the shutdown of the 'trunk voter on cause a calling connection line, and in which the connection of the outgoing exchange line to the switching means initiating the exchange line dialer a characteristic incentive to take effect.

The invention now represents a development of the arrangement according to the Main patent and consists in the fact that when all house connection facilities are occupied and after setting the exchange dialer to a calling line -one all Device assigned to trunk lines for taking up a trunk connection identifying a trunk connection Incentives through which the connection of the outgoing exchange line to the exchange dialer caused is brought under the influence of the calling party.

In the drawing, an embodiment of the invention is shown. If there is a free connection path for house connections and the calling subscriber of the Tza intercom picks up his receiver, the following circuit is closed: -j-, contacts it via the loop of the intercom Tn, contact 2t, winding I: of the relay R, -. The relay R identifies the caller by closing the contacts 3 r and qr and causes the excitation of the relay GR via: -1 -, contacts 5 r, 6 t, relay GR, -. The relay GR closes the contact 79r, so that via +, contacts 7 gr, 8c, line. On, a starting circuit for setting the call finder is closed. If the call seeker AS reaches the calling subscriber, the following test circuit is established: +, winding II and I of relay C, switching arm c of call seeker AS, contact qr, winding II of relay R, contact 3 rb, zw. 9 t, relay T, -. Relay C responds, blocks the calling subscriber -by short circuit: the winding II of the relay C via contact ioc and stops the call seeker AS in a known manner, not shown. The relay T also speaks in the test circuit; on,: which opens the call circuit by opening, the contacts it and 2 t and gle @ @ Uli-1 'early by opening the contact 6t `d tt.`' interrupts the circuit of the relay GR. Ko @ rc: clock 9 t is also opened so that the test circuit only runs through contact 31-.

After .the setting of the call finder AS on the calling line, the subscribers of the telephone station Tßa send out a certain series of current impulses, which corresponds to the code number for outgoing exchange connections. This series of impulses sets the line selector to a specific contact that energizes the relay Ani. In the test circuit, the test relay P also responds and blocks in a known manner via contact ii p. The following circuit is established by relay Ani: -f-, resistor W, contacts i2 gr, 13 Ani, 14b, winding I of relay D, winding I of relay R, -. In the aforementioned circuit only the relay R, responds, the relay D leaves its contacts in the rest position. Relay R, closes contact 15r "so that the rotary magnet DAW via -1 -, relay interrupter RU, contacts 15 r" 16 c, "rotary magnet DA W, - is operated until the following test circuit is established: -i-, Contact 17r1, winding III of the relay C5, switching arm d of the exchange dialer AW, line 18, switching arm d of the caller AS, contact igp, relay FR, switching arm d of the line selector LW, line 2o, -. The relay C5 enforces the exchange dialer AW Opening of the contact 16c5 silently. The relay FR triggers the line selector LW and the release of the call seeker AS in a known, not shown manner. The blocking on the contact ioc is canceled, the following blocking circuit is established for the calling connection point Tiz: +, Contacts 21 tY, 22 c5, winding 1 of relay C5, switching arm c of the exchange dialer AW, line 23, winding II = of relay R, contact 3 r, relay T, -. Relay C5 switches through to contacts 24c5 and: 25C., So that the food current circuit is closed via relay S. Relay S energizes relay L 'via contact 26s. The relay is excited by relay T%, i.sB via Kantaltt27v. Relay B opens contact 14b and closes contact -28b. As a result, relay R, drops out, and another call stimulus is transmitted to another exchange dialer via contact 28b. The current surges can be transmitted to the exchange line AL via contact 29s by means of relay S. Are all the connecting routes to manufacture -on house connections, in the present case daily call finder AS and line ler L TV, occupied, all test is C: the call seeker excited and thus "@ Chain. Of which only two contacts are shown - represents are closed via the contacts 30 c, 31 cl. If a calling terminal now picks up the receiver, relays R and GR are energized in the manner described. The following circuit is now established by the relay GR: -} -, contacts 7, -, r, 30c, 31 ci, 32 ab, 33 Ani, i4 b, winding 1 of relay D, winding I of relay R1, -. In this case, both relays D and R respond. Contact i5ri is closed by relay R and the rotary magnet DALl 'is operated until the following test circuit is established: -f-, contacts 17r ", winding III of relay C5, switching arm d of:, lrnts @@ vählers AW, line 18 , Contacts 34t, 4r, 3r or 9t, relay T, -. Relay T interrupts the call circuit at contacts it and zt and opens contacts 9t and 34t , 4c; and 25c5 effects.

Since the relay D is also energized in the circuit: of the relay R, the contacts 35 (1 and 36d are open and the contacts 37d and 38d are closed. The connection to the exchange line AL is interrupted and at the same time a dialing signal WZ is applied to the voice lines.

This dialing character, which prompts the subscriber to dial, can now be different from the other dial characters of the house unit, so the calling subscriber is informed immediately. that he's using an outside line connected is.

Relay D creates a holding circuit via -E-, contacts 39c5, 4o d, winding II of relay D, -. At the same time, the following circuit is closed by relay D: -f-, relay interrupterRU, contacts 41 d, 42 p1, rotary solenoid DHW, -. The switchgear HW will continue to advance. until the following circuit, identified by contact 34d, comes about: -! - Contact 43 d, switching arm c of the switching mechanism HW, relay P "-. Relay P, interrupts the circuit of the rotary magnet DHIV at contact -12p, and thereby sets the selector II TV quiet.

Relay S energizes relay 1 ″ via contact 26s and relay B via contact 27v. If the subscriber now sends the code for office connections, the current surges are picked up by relay S and transmitted to the rotary magnet DKW via contact 44s The circuit runs through +, contacts 45v, 44s, switching arm d of the switching mechanism HW, relay V2, rotary solenoid DKW, -. During the current series, relay V2 is energized and the contact 46v2 is open after the relay V2 has dropped out, the following circuit is established: -; -, contact 46v2, switching arm a of selector KW, line 47, switching arm. b, of switching mechanism HW, contact 48d, winding III of relay D, -. winding III of relay D is a counter-winding to the winding 1I of the relay D, so that when the last-mentioned circuit is established, relay D is brought to drop-out files 35 d and 36d. Relay D also opens contact 43d, so that relay P1 drops out, relay F1 closes the following circuit: - @, relay interrupter RUi, switching arm b of the switching mechanism KW in working position, contact 491d, relay V2, rotary solenoid DKW, -. Through the relay interrupter RUl the switching mechanism KW is advanced until it has reached the rest position.

'If the calling subscriber selects a different number than the code number for outgoing exchange connections, the following circuit is established via the switch arm a of the selector KW after the series of impulses: Contact 46v2, switch arm a of the switchgear KW, line So, switch arm a des Switching mechanism HW, Tr, -. The relay Ty opens the contact 21 tr and thereby interrupts the blocking circuit via the switching arm c of the exchange dialer AW. C5 relay drops and opens the contact 39c, the circuit for the relay D. D relay drops out and effected in the same manner as described above, the recycling of the switching mechanism in the KW .Ruhelage.

When the relay C5 drops out, the exchange dialer is triggered in a known manner, not shown, and the subscriber of the telephone station Tzz receives the busy signal via the subscriber circuit. By interrupting the blocking circuit via switching arm c of the exchange dialer AW, the relay R is first brought to waste, which brings its contacts back to the rest position. Relay T is then via: +., Contacts 51 r, 52 t via the loop of the call station Tn, contact 53 t, 54r, relay T; - kept excited. The buzzer is inductively transmitted to the relay T in some way. The subscriber hangs up the receiver, thus interrupting the circuit for the relay T and all switching means that have been used are thus again in the rest position.

Claims (5)

PATENT CLAIMS 1. Circuit arrangement for telephone private branch exchanges with dialer operation, with which to establish an outgoing exchange connection Exchange line dialer set to the calling connection point and the incentive to set and to stop the dialer on the contacts of the calling connection line is given over the voters for house connections, according to patent 71901: 2, .thereby characterized in that when all house connection devices and after setting the exchange dialer (AW) to a calling connection point all Facility (KW) assigned to trunk lines for taking up an trunk connection characteristic incentives through which the connection of the outgoing trunk line to the office voter is brought under the influence of the calling party will. 2. Circuit arrangement according to claim 1, characterized in that the device (KW) to record the identifier for trunk connections via a call finder (HW) is brought under the influence of the calling connection point. 3. Binding arrangement according to claim 2, lda, characterized in that parallel to the incentive circle with free House connection facilities an incentive circle depending on the busy status : the house connection routes are established and a special relay in the incentive circuit (D), which is a marking device only when house connection devices are occupied (KW) for outgoing connections under the influence of the calling connection point brings. 4. Circuit arrangement according to claim 1, characterized in that @ that the Device (KW) influenced by a feed bridge relay (S) for exchange connections will. 5. S circuit arrangement according to claim 4, characterized in that. that the Device (KW) sent by -the calling connection point, by the Feed bridge (S) for trunk connections transmitted power surges is influenced.