DE490829C - Circuit arrangement for telephone systems with dialer operation - Google Patents

Description

Circuit arrangement for telephone systems with dialer operation The invention concerns multi-switch telephone networks and relates in particular on orders for the automatic setting of direction selectors on the incoming End of a non-directional connection line in the idle state. Such connecting lines are only used when using, e.g. B. by occupying a certain one of several various numbered entrances, directed. The invention now aims to adjust the direction selector a multiple connecting lines common impulse transmitter to use, and further with this rush current sending device several at the same time To be able to adjust the direction selector. This is achieved by the fact that the surge transmitter is equipped with facilities that after the occupied access is switched on a free connection line in cooperation with auxiliary switching means of this connection line the time of the beginning and the end of the transfer of the hiring the direction selector serving and generated by the common transmitter device determine.

On Figs. _, 2 and 3 is an embodiment of the invention shown.

In Fig. Z , a connecting line is shown with a, b , which can be connected to various accesses via a call finder TJO. Such an access is designated in the drawing with a1, a2 to e1, e2. The number of these accesses depends on the number of connection options required. A common rush transmitter lighting is assigned to the individual entrances with different numbers and on the illustration = with INT. I, INT. A and INT. B designated. The individual, differently numbered entrances can be occupied by voters of any type. This voter is shown at LJC on Fig. R.

Fig. 2 shows the incoming end of the connecting line a, b with the associated direction selector TJI.

In Fig. 3 is one of the direction selector shown in Fig. 2 assignable workplace shown.

Assuming that the selector labeled LJC has been set to contacts a1 to e1, relay LJ has been energized via battery, winding of relay LJ, break contact of relay C0, contact cl, switching arm of selector LJC at contact cl. The contacts of the energized relay LJ apply test potential to contact d2 of the selector TJO. In addition, the following circuit is established for the drive magnet RT of the transmitter: battery, normally open contact on relay LJ, winding of breaker magnet RT, earth. In parallel to this drive magnet, the starter relay CS is energized, creating the following circuit for the rotary magnet PF of the selector TJO: battery, normally open contact on relay CS, normally closed contact on relay TJI, winding of rotary magnet PF, contact of relay S4, earth. The breaker magnet PF is energized, and since the relay CS is common to several call seekers, all call seekers still standing by are left on. Assuming that the call seeker TJO shown in the drawing has run into contacts a2 to e2, the following circuit is established for relay TJl: Earth, left winding of relay Tjl, normally closed contact on relay S4, contact d2, normally open contact on relay Lj, Battery. The relay TJl is energized and causes the rotary magnet PF to be switched off by actuating its contacts. The relay Tj. is excited and closes the high-resistance winding of the relay Tji through its left normally open contact, whereby a blocking of the call seeker T j0 is achieved in a known manner. The fifth switching arm of the selector TJO is connected to the current impulse transmitter INT. I connected. The INT. I have as many brushes as different series of current pulses are to be sent out. Each of the contact sets e of the different numbered entrances is with a brush of the current impulse transmitter INT. I connected. This arrangement makes it possible to connect the contacts e of the call finder TJO to any brush on the transmitter. Since the interrupter device runs continuously, two further interrupter disks are INT. A and INT. B, which monitor the beginning and the end of the series of current impulses as a function of the relays P4 and P3 on the connecting line a, b. Has z. B. the breaker disc INT. A reaches the position shown in the drawing, the following circuit is established for relay P1: earth, breaker disk INT. A, normally closed contact of relay P1, winding of relay P1, contact of relay TJ2, battery. The relay P1 responds and closes a holding circuit for itself. Through another contact of the relay P1, the battery is applied to the line b of the outgoing connection line via a break contact of the relay P2 and the following circuit for the relay P is established: battery, break contact on Relay P3, winding of relay P2, normally open contact on relay P1, contact e2, contact on breaker disk INT. I. The breaker disk INT. I can only send out current surges after the relay P1 through the interrupter disk INT. A has been excited. If current surges are now transmitted, ie if the relay P2 is energized and de-energized in bursts, the battery is switched on and off in bursts on the b-wire of the connecting line. If the contact of the breaker disc touches INT. B the brush of the line going out from it, the following circuit for the relay P3 is established: earth, breaker disc INT. B, normally open contact of relay Pp, contact on relay P3, winding of relay P3, battery on contact of relay TJ2. The relay P3 is energized, interrupts the circuit of the relay P2 via its left normally closed contact and remains energized via its own contact. By interrupting the circuit of the relay P, the termination of the series of current impulses to be transmitted is determined.

If, as described above, the battery was connected to the b-line for the first time, the following circuit was closed: earth, contact of relay JC, (Fig. 2), winding of relay JS, b-line, contact of relay P, ( Fig. X), contact of relay P1, battery. The relay IS responds in this circuit and causes the relay SS to be excited. Each time the battery is disconnected from the b-line when the relay P is excited (Fig. X), the relay IS is de-excited, which creates the following circuit: Earth, contact of the relay IS, contact of the relay SS, which, since the relay SS is designed as a delay relay, remains closed during the current impulse, normally closed contact of the relay IC, winding of the delay relay JD, rotary magnet RJ, battery. The relay JD is energized and disconnects ground from the switching arm 0 of the switching magnet RJ. The relay JD also remains energized during the rush current. Furthermore, the rotary magnet RJ is excited in the circuit just described, whereby the switching arms N, 0, R are switched one step further. If the relay IS is energized again after the end of the first current impulse, the circuit for the rotary magnet RJ is interrupted by its contact and the circuit for the relay SS is restored. When the next current surge arrives, the rotary magnet RJ is again excited so that the switching arms N, 0, R of the switching mechanism are switched one step further. After the end of the series of impulses, relay JD drops out and creates a circuit for relay JC via: earth, contact on relay JD, switching arm and contact bank on switching arm 0, winding of relay jC, battery. The relay JC responds and separates earth from the b line, so that the short circuit of the relay JB is canceled and the relay JB is connected in series with the relay JS. The relay JS drops out because it cannot remain energized in series with the relay JB, and the relay JB closes a circuit for the relay SS through its normally open contact, so that it is kept energized independently of the relay JS. When the relay JC is energized, the circuit of the switching magnet RJ is opened. Furthermore, the relay IC closes a circuit for the rotary magnet of the caller TJI, which runs from the battery, normally closed contact of relay JH , normally open contact of relay JC, winding of rotary magnet PT, normally closed contact of relay JT3, earth. The rotary magnet PT is excited and switches the switching arms of the selector TJl step by step until the test switching arm of the selector touches contact d3, which is characterized by the setting of the switching arm R (by means of the switching magnet RJ), which creates the following circuit: Earth , Normally open contact of relay SS, normally open contact of relay JC, switching arm R, contact d3, switching arm of selector TJI, winding of relay JT3, switching arm of selector TJl, contact c3 of selector TJI, contact c4 (Fig. 3), which is connected to the contact c3 of Fig. 2 is identical, lower contact on the latch LJ and BJ, R, contact on the relay JA (Fig. 3), battery. The relay JT3 is energized and closes a circuit for the relay JT4 via its normally open contact. The relay JT4 responds and switches on a blocking winding of the relay JT3, whereby the selector TJI appears blocked in a known manner. Furthermore, a circuit for the relay JH is established by a normally open contact of the relay JT4. The relay JH is energized and switches to its own holding circuit, which runs from earth to the contact of relay JD via switch arm 0, contact bank on switch arm 0, normally open contact on relay JH, winding of relay JH, battery, earth. In addition, the contacts of the relay JH switch lines a and b through and the battery is connected to the a line via the choke coil RET, causing the relay S4 (Fig. I) to respond. The relay S4 switches through the b-line in the selector TJO through its right working contact and applies earth to the winding of the relay CO through its left contact. The relay CO is energized and, through its contact, opens the c line in the selector LJC, whereby the relay LJ is de-energized, which in turn causes the relay CS and the rotary magnet RT to be switched off. - Furthermore, the relay TJl (Fig. I) is de-energized by energizing the relay S4, whereby the relay TJ2 also drops out and the relays P1 and P3 are thereby caused to drop out. The relay JBl (fig. 3) is energized in the following circuits: earth, winding of relay JBl, winding of relay JB2, b-wire, contact of relay JH (fig. 2), winding of relay S5, battery. The relay JBl responds, but not the relays SS and JB2. The relay JBl switches on the lamp CL through its normally open contact, which indicates to the officer that there is a call. If the officer inserts the connecting plug into the latch, the relay JCl (Fig. 3) is energized and a circuit is established for the relay JA , whereby the relays 1T3 and JT4 (Fig. 2) are de-energized. The circuit of the lamp CL is interrupted and the lamp S2L is made to light up via a contact of the relay JCl. If the desired participant answers, the relay S3 is energized, the lamp S2L goes out, and JBl is short-circuited. The relays JB2 (Fig. 3) and S "(Fig. 2) are energized. By energizing the relay S5, a counter at the place of the calling subscriber is influenced in some known way, which, however, does not belong to the invention The lamp S, L was switched off when the relay S3 was energized, which makes it clear to the officer that the desired subscriber has answered. not shown), causing the relay JS (Fig. 2) to drop out and the relay SS also dropping out. The switching magnet RJ is switched on for the purpose of resetting to the rest position via: earth, contact of relay SS, contact bank on switching arm N, break contact x , Winding of the rotary magnet RJ, battery. When the switching mechanism has returned to the rest position, the circuits of relays JC and JH are opened on switching arm 0. The relay JH switches battery v on the a-line and causes the de-energization of the relay S4 (Fig. i), whereby the relay C0 is also de-excited. The relay JH (Fig. 2) opens the b - or when it is de-energized, whereby the relay JB2 (Fig. 3) is de-energized and the lamp S1L lights up, which informs the officer that the connection has been abandoned. If the called subscriber hangs up, the relay S3 is de-energized and the lamp S2L lights up. The officer pulls the plug out of the latch (Fig. 3), so that the relay JCl drops out, whereby the battery is switched off from the a-line and the relay JA is de-energized.

Claims (2)

PATENT CLAIMS: i. Circuit arrangement for telephone systems with dialer operation, in which by occupying one of several different numbered accesses to an undirected connection line this is directed by an automatically coming into effect current impulse, characterized in that the impulse transmitter is equipped with devices (INT. A, INT. B) which, after connecting the occupied access to a free connection line in cooperation with auxiliary switching means (Pi, P2) of this connection line, determine the time of the beginning and the end of the transmission of the current impulses used to set the direction selector and generated by the common transmitter. 2. Circuit arrangement according to claim i, characterized in that the current impulses for setting directional selectors run via contacts of the selector connecting the occupied access with a connection line with free choice and the auxiliary switching means (PI., P2) of the connection line are controlled directly by the current impulse transmitting device.