DE648582C - Circuit arrangement for telephone systems with dialer operation - Google Patents

Description

GERMAN EMPIRE

ISSUED ON AUGUST 4, 1937

REICH PATENT OFFICE

PATENT LETTERING

CLASS 21a ³ GROUP 34 oi

Siemens & Halske Akt.-Ges. in Berlin-Siemensstadt *) Circuit arrangement for telephone systems with dialer operation

Patented in the German Empire on June 16, 1931

The present invention relates to telephone systems with dialer operation, .bei where connections are redirected. Its purpose is to be simpler and more reliable Way in intercoms with multiple traffic directions, the time, reduce the amount of traffic necessary to change direction from one traffic direction to another, but here without use

ίο complexly designed rear derailleurs as Mixing selector make good use of the lines accessible via this selector to be able to. In particular, in addition to making good use of the existing lines unnecessary forwarding of the preparatory voters and the simultaneous running of a larger number such selectors can largely be avoided during the preparatory setting process.

This is achieved by connecting the provided Another traffic direction is routed to the calling line, a forwarding takes place the unused mixer tap on a connected line, on the other hand, is only used for the preparatory setting that voter is made whose associated connection line during the busy line is busy.

Compared to known arrangements in which reversing selector is first of all free choice Occupy a free connection line for a specific traffic direction and then click another contact group to which lines of a different traffic direction are connected are to be reversed, the arrangement according to the invention simplifies the circuit and saves time reached when reversing; because the voters of the known arrangements must be provided with special facilities be equipped, which is set on a line of a certain traffic direction Start voters again so that he can identify the contact group to which the lines of the desired traffic direction are reached. Other bodies need prevent a check of a free line in the contact group from which the voter is redirected. Another expenditure of time the change of direction is conditioned by making the free choice in the newly selected contact group.

Compared to known arrangements in which a reversal of one in · the a directional connecting line via one assigned to it, in advance Set voters with free choice on a connection line in a different direction at 6p A license plate becomes effective, and in which the previously set Voter is blocked immediately after its setting, owns the present

*) The patent seeker stated as the inventor:

Walter Kusche in Berlin-Steglitz,

Invention the advantage of better utilization of the existing facility by the voter, via which the second traffic direction is reached, still with occupancy is not blocked. .. ^

In contrast to facilities where »when a line provided in advance is used, this line is blocked and all other voters on this line are forwarded. Rather, the forwarding of the * 5 unused dialers is carried out depending on the occupancy of the connecting lines assigned to the individual mixed dialers. The switching takes place individually, according to the use of the assigned lines. This avoids the disadvantage previously associated with the use of preparatory voters that all unused voters who are on one and the same line are ^{advanced 2} S at the same time. On the one hand, the simultaneous switching of mixed voters results in a poor mix, since all voters switched on at the same time will adjust to one and the same next free line, on the other hand, an overload of the exchange power source can easily occur.

The inventive arrangement also prevents the number current impulse from being mutilated by transmitting current impulses via a W ⁷ counter with free choice that is still in the search, since at the moment of switching from one traffic direction to another, the voter with free choice is already set in preparation.

In Figures 1 and 2, an embodiment is shown to which the invention is not limited. Fig. 1 shows ⁴ >> an overview plan, while in Fig. 2 the current paths for the connection setup indicated in Fig. 1 are shown in detail. They're in the second selection //. VW and the parallel allocated voter with free choice (mixed selector MW) upstream and downstream electoral stages only those circuits that are absolutely necessary for explaining the operation of the voters to which the invention relates are shown. In the figures, Tn represents a partial nelinier connection. VW and a second preselector 77. VW occupies a first group selector I. GW in the traffic direction A , · This group selector is assigned a tracking switch MSW , of which only the rotary magnet DMSW and the switching arm KiSW ₁ are shown. By one or more current impulse lines sent out by the connection point Tn , which are used to identify the desired traffic direction, both the first group selector /. GW and the voter subordinate to it are set according to the number of series of current impulses sent as well as the tracking switching mechanism MSW . When the code number for traffic direction B is selected, the follow-up switching unit reroutes the connection in this traffic direction. In the assignment of the second preselector of the mixing selector MW had already been exhausted, to adjust to a free connection line in the transport direction B, so that at any necessary switching, the calling connection point is connected Tn to a group selector in the direction B.

The establishment of connections in both traffic directions A and B is described below with reference to FIG.

When lifting the handset at the connection point Tn , the first preselector /. Started VW , which switches the connection through to a free second selection II. VW. When the second selection is occupied, relay R responds to: earth, relay R, winding I, contacts 2t, in, line Lc ₁ , selector arm I vwc of the first selection, battery, earth. Relay R activates its contacts and switches on the rotary magnet D of the second preselector II. VW at contact 3 r , which sets the selector in motion. Contact 5 r prepares the test circuit. Contact 6r closes the turning circle of the mixer selector MW. It work thereby alternately via the contacts ~ js and Sdnizv and thereby cause the handoff of the voter. When encountering a free connection line to a group of voters in the transport direction B remains relay S via the windings 11 and I of the rotary magnetic DMW and RELAY5 "winding III and addressed via resistor Wi ₁ , because it finds no ground potential in the group selector (not shown), and switches on contact ".? the rotary magnet. The mixed forest is thus set in preparation for a free connection line. As a result of the resistance Wi ₁ , other mixer selectors can also prepare themselves for the same group selector. If this is blocked via another mixer selector, then the relays S of all mixer selectors, which had set themselves in preparation for the now blocked group selector, are brought to waste, and the circuit for

the rotary solenoids of the mixer tap that is not in use is prepared for 7 seconds via the contacts. The mixer selector continues to be turned and a new setting is made to the next free group selector.

When separating the second selection a free first group selector in the direction ^ speaks in the second selection

ίο Relay T via its winding I and relay C in the first group selector on with a delay. Relay T short-circuits its high-resistance winding I through contact 2 1 and is held by its winding II. At contact 4 1 , the turning circle of the second preselector is interrupted and the selector is therefore stopped. The contacts 9 1 and ιοί switch the lines La ₁ and Lb ₁ through to the lines La ₃ and Lb _3. In the first group selector, only the surge receiving relay A is shown, which responds when the lines La ₁ and LJb ₁ are switched through before relay * C. The circuit for the "rotary magnet DMSW of the tracking switchgear when relay C is triggered is prepared by contact nc . When the current impulse is now given, the rotary magnet is excited via contact 12a according to the number of current impulses emitted and sets the tracking switchgear. The setting The switching devices required for the group selector are not shown, since this is done in a manner known per se.

If a connection in the direction B is desired, then the tracking switching mechanism has been set by the current surges to a contact on which the line Ld ₃ is located. Via line Ld _3, the Umsteuerrelais U, winding I is energized in the following way in the second selection: earth contact 13 a, switching arm ¹ MSW ₁ of Mitlaufschaltwerkes, line Ld _s, Wählerarm II vwd, relays U, winding I, contacts 4 1, 3? ·, Rotary magnet D, battery, earth. 'Rotary solenoid D does not respond in this circuit. By actuating the contacts ι M, 14 ″ and 15 u , the lines La ₁ , Lb ₁ and Lc _{1 are} switched through to the lines La ₂ , Lb ₂ and Lc _2. By switching the contact in, the test leads of the second preselector and the subsequent group selector in traffic direction A are disconnected . The relays T and R in the second preselector and relay C in the group selector are de-energized and de-energized. The group voter and the subordinate voters already set are triggered and are free again for other assignments. The blocking of the second preselector is maintained by relay U, winding II. The group selector occupied by the mixer selector in the traffic direction B is blocked in a manner known per se by changing the resistance ratio in the line Lc ₁ , Lc ₂ , Lc ^.

At the end of the call, hang up the. Handset at the subscriber stations the release. The first preselector is triggered by cutting the Lc ₁ , Lc ₂ , Lc ₄ wires in the group selector. At the same time, relays U and 5 "in the second preselector and in the mixer selector are de-energized and drop out. Since both selectors are not in the rest position, they are available again for the next assignment.

Claims (3)

Patent claims: 1. Circuit arrangement for remote intercom systems with dialer operation, at which a reversal of a connecting line running in one direction via an assigned to it, im pre-set voters with free choice to one that has not yet been blocked Connection line in a different direction when a license plate becomes effective takes place, characterized in that when reversing a connection of the line provided by others Direction of traffic to the calling line takes place, a forwarding of those on a connected line unused mixer selector, on the other hand, for preparatory setting only with that one Voter is made, its associated connection line while a line is busy is occupied. 10t, 2. Circuit arrangement according to claim i, characterized in that when using a selector with free choice and the line provided by this switching means (relay S) become effective, which prepare the working circuits of the switching magnets of the unused mixer selector on the same line. 3. Circuit arrangement according to An-Spruch ι and 2, characterized in that that when connecting a voter with free choice to a calling line the Test relay of the unused mixer tap on the same provided line the electricity is withdrawn. 1 sheet of drawings