DE451051C - Circuit arrangement for telephone systems with through traffic - Google Patents

Description

The invention relates to a circuit arrangement for telephone systems in which the connection of two lines connected to different workstations, z. B. trunk lines, takes place in so-called through traffic. So far, connections have been made of this kind made over several cords in series.

The present invention simplifies the switching through of such connections achieved in that the lines intended for through traffic to a special one, the through traffic serving workplaces and those belonging to the usual connecting places Connection points are arranged in a branch of the lines.

According to the invention, switching devices are expediently assigned to the connection places, the automatic shutdown when the connection is established at the connection point the connection point at a connection point and the connection of the lines directly to the connection device of the interconnection point at the other connection point.

The invention is shown in the accompanying drawings in two exemplary embodiments shown.

Fig. 1 shows the circuit of a remote exchange with a passage.

Fig. 2 shows another embodiment of this circuit.

F ₁ and F ₂ denote two long-distance lines which lead via the remote places FP ₁ and FP ₂ to the jacks Kf ₁ , Kfz of the transit place DP . The connection pawls AKu AK _{2 of} the remote workstations FP ₁ , FP ₂ are arranged in a branch of the lines F ₁ , F ₂ . In order to enable the participants to be separated, there are separating handles 7X ₁ , TK ₂ on the remote workstations - the connection can be monitored from any of the remote workstations FP ₁ , FP ₂ . The surveillance is expediently carried out by the officer who has to operate the most important line. The interconnection of the trunk lines is carried out by the officer at the interconnection point without the aid of the cords of the remote officer. According to the exemplary embodiment in Fig. 1, the lines F ₁ and F _{2 are} switched through and the remote station FP ₁ or FP ₂ not exercising surveillance is disconnected, and the officer at the transit station puts her connecting plugs Dst _v Dst ₂ into the jacks / CZ ₁ , / < / ₄ or Kh, Kfs, depending on whether a call comes in via the trunk line F ₁ or F ₂ . As a result, the switching devices O, O ₁ and O ₂ and disconnection devices FK ₁ , / ^ ₁ and FK _{2 , fk 2 assigned to the} remote places are influenced, which then cause the switching of the long-distance lines and the switching off of the remote place not exercising monitoring.

It is assumed for example that a call on trunk F ₁ at the remote official on the remote place FP ₁ arrives. After this has been indicated to her in a known manner, the remote officer leads her interrogation plug ASt into the interrogation latch AK ₁ . If the remote officer looks from the num-

*) The patent seeker stated as the inventor:

Frit hot in Berlin.

the desired long-distance line, ζ. Β. F ₂ that this only has a different remote place, z. B. FP ₂ , can be reached, she will contact the officer of this remote station on a service line. The remote officer of the remote station FP ₂ now informs the remote officer of the remote station FP _1, for example, that the connection can be established via a line Z ₁ . Thereupon

ίο the remote officer of the remote station FP _{1 to} the remote officer at the switching point DP by means of the service line the order to connect the line / ^ with the line Z ₁ . The officer at the switch-through place now puts her plug

ig D ¹ St ₁ into the jack Kf ₁ , which creates the following circuit: earth, relay S, c- wire of the plug D ¹ Sf ₁ , jack socket Kfχ, resistor W ₁ relay O, battery, earth. The relay O responds and closes its contacts O ₁ and O ₃ . The long-distance line F _{1 is switched} through to the through-place DP through the contact O ₁ , and a lamp BLS is switched on through the contact O ₃ , which indicates to the officer that the line is connected at the through-place. At the same time, this lamp serves as a sign for the officer that the transit officer has disconnected the connection at the end of the conversation. Then the officer of the passage places her plug Dst ₂ in the latch Kfi, whereby the relay FK _{2 is} energized. The relay FKs then opens its normally closed _{contact fk 2} and closes its normally open contact fk ₃ . The remote station FP _{2 is} switched off by the contact fk _{2 and} the remote line F _{2 is switched} through via the line Z ₁ to the jack Kfί of the transit station. This is done in order not to impair an existing connection by connecting another remote officer, and for this purpose special relays FK ₁ and FK _{2 are} provided, which are influenced when the long-distance lines are switched through at the transit point and, by means of their contacts, switch off the Effect monitoring of remote place. A busy lamp B _{1 is} switched on by the contact fk _B , which indicates to the remote officer of the remote station FP ₂ that the line z is busy. The connection is now established via the transit area. Assuming that the line / ^ is the more important, the monitoring at remote station FP ₁ and remote station FP ₂ remains separated.

Therefore, the remote official of the remote place FP ₁ remains in order to monitor the conversation with her query plugs Ast in the query jack AKI is a demand for any of the participants needed, so she goes with her connection plugs Ast ₁ in remote jack TKl- J ^e be, as in what direction if she flips the interrogation _{switch 'S a} located in her cord pair, she can speak to the subscriber on the trunk line F ₁ or via the transit point DP ₁ with the subscriber on the trunk line F _2.

When the conversation is over, the monitoring remote officer bridges the resistance W by closing the button RT. In the resulting circuit, the relay S in the corded circuit of the officer of the transit area is triggered, closes its contact, which switches on the tail lamp SL at the transit area. The lamp lights up and signals to the security officer that the connection can be disconnected. By bridging the resistor W , the relay O has not dropped out. As a result, the BLS lamp remains switched on and remains lit until the officer in the transit area has pulled out the plug D ¹ St _1.

The operation of the circuit shown in Fig. 2 is as follows:

The long- distance lines F ₁ and F ₂ are connected through to the jacks Kfs and Kf β of the passage. The disconnection of the remote area not exercising surveillance is also carried out here by the officer of the transit area. As soon as a call arrives via one of the long- distance lines F ₁ and F ₂ , the officer of the relevant remote station FP ₁ or FP ₂ goes with her interrogation plug into the interrogation jack AK3 or AKi. In the exemplary embodiment, the first case is assumed, i.e. into the jack AKz- This opens the contact / A _5. It can now, if the officer of the. Durchgangsplatz has been asked in a known manner to make the connection of the lines F ₁ and F ₂ , and for this purpose goes into the latch Kf5 with her connecting plug, the shutdown relay FKz not be energized. If the officer now inserts her other connecting plug into the jack Kfe for the purpose of switching through the two lines F ₁ , F ₂ , a circuit for the switch-off relay FKi is established via earth, relay S ₂ , c-wire of the plug, jack socket Kfe, contact kf · ,, Relay FKi, battery, earth. The relay FKi responds and opens its normally closed contact / A ₈ . The remote station FP _{2 is} switched off by opening this contact. _{The relay S 2} in the circuit just described cannot respond because of the high resistance of the relay FKi. The surveillance is now carried out by the officer of the remote station FP ₁ . If the monitoring is to be carried out by the remote officer of the remote station FP ₂ , the officer of the remote station FP ₁ must first remove her plug from the handle

Pull out b and the officer of Fernplatz.es FP ₂ insert her plug into the handle AKi. As a result, the switch-off relay FKz is energized and the switch-off relay FKi is de-energized. The remote station FP ₂ is switched on by closing the contact fk ₈ and the remote station FP _{1 is switched off} by opening the contact fk _e . The separation of the participants

ίο for the purpose of query happens in the same way as already described in the embodiment of Fig. ι. The final signal is also given here by pressing a button RT ₁ , whereby the relay SZ is energized and its normally open contact sz closes. This creates the following circuit: earth, ReMsS ₁ , c-wire of the plug, Klirtkenbuchse Kf 5, contact sz, relay SZ, battery, earth. The relay S ₁ in this circuit was also energized by pressing the RT ₁ button and closes its _{normally open contact S 1} , which switches on the tail lamp SL ₁ at the passage. The officer of the transit area then cuts the connection in a known manner.

The switching devices of the remote station FP ₂ , which are not suitable for the connection described (arrival of a call via the line F ₁ ) and which exactly correspond to the switch directions of the remote station FP ₁ , are not shown in the drawings.

Claims (10)

Patent claims: ι. Circuit arrangement for telephone systems with through traffic, in which the long-distance lines are not connected directly from these places, but via a special auxiliary place, in which the long-distance lines are connected to the special, the through-traffic intended for voice traffic Lead workplace, and that the connection points (AK) belonging to the remote places (FP ₁ , FP ₂ ) are arranged in a branch of the lines (F ₁ , F _2). 2. Circuit arrangement according to claim i, characterized in that special separation points (TK) _{in the lines (F 1} , F ₂ ) leading to the switching point (DP) _{are arranged at the Femplätze (FP 1} , FP ₂ ), when they are used the officer of the monitoring remote place separately with each of the trunk lines (F ₁ , F ₂ ) in connection. 3. Circuit arrangement according to claim i, characterized in that the remote places switching devices (FK, fk) are assigned which allow the automatic disconnection of the connection points (AK) at the remote place when the connection is established at the switching place. 4. A circuit arrangement according to claim i, characterized in that when the connection is made at the switching point (DP) switching devices (O, O ₁ , O ₂ ) are influenced at the remote place, which the switching of the lines (F ₁ , F ₂ ) directly on cause the connecting device (Kf) of the switching point. 5. Circuit arrangement according to claim 4, characterized in that each line arriving at a remote location at the transit location (DP) is assigned two connecting devices (Kf ₁ , Kh ^m d Kf ₃ , Kfi) , one of which is the through-connection with, the other without Connection points (AK) of the remote place permitted. 6. Circuit arrangement according to Claim 2, characterized in that the disconnection device (FK3, FKi) is assigned to the connection points at the remote station. 7. Circuit arrangement according to claim 5, characterized in that at When the connection points are put into use, the disconnection device automatically except Effect is set. 8. Circuit arrangement · according to claim i, characterized in that in the case of through connections, the monitoring devices of the monitoring remote plateau to the connection point of the remote line on request are switched on at this remote place. 9. Circuit arrangement according to claim 2, characterized in that an actuation of the separation point! (TK) takes place through a connection plug (ASt) connected to the interrogation plug. 10. Circuit arrangement according to claim 8, characterized in that when using the separation point (TK) the connection of the headset on one line is independent of the connection of the headset on the other line via the plug * (ASt) of the connection pawls. 1 sheet of drawings.