DEM0020099MA - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Registration date: September 19, 1953. Advertised on September 29, 1955

GERMAN PATENT OFFICE

The invention relates to a circuit arrangement for telecommunications, in particular telephone systems, in which multiple switches are used as connecting organs, preferably those based on the cross-rail principle be used. Such switches are each made up of a number of individual switches that represent independent connecting organs, put together and are from a common adjustment device served.

ίο As is well known, a common setting device is compelling to a single sequential processing of the setting processes. The question that resulting from such an arrangement consists in determining whether and when the previous one The setting process and the subsequent through-connection is completed to make the setting for initiate the next connection. To such control devices in their effort in justifiable To be able to keep limits, proposals have already been made which the task of solve consequent dispatching in such a way that the individual setting requirements are discontinued in pulses become, d. This means that a certain predetermined time is available for each setting process is placed and on a control whether the on-position has led to a success or not, is waived.

Such an arrangement has the advantage of saving switching means, but has the disadvantage accept that the given in each case

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Entry time must be long enough that even the most unfavorable setting process in terms of time can be carried out with certainty. In many cases Shorter set times would suffice, so that short waiting times in the handling of the setting processes occur and central links with greater market values can be claimed. Continues to exist the disadvantage that the control over the respective setting and subsequent connection

ίο is not given and any malfunctions that may occur do not immediately catch the eye.

Furthermore, arrangements have become known which, in the event of a fault or failure of the connection setup give a trigger signal for the register used in each case, whereupon the register the No collection facility. releases. However, in In this case, separate identification devices have been used with the connecting organs can only be interconnected when necessary.

These no-drawing devices mean an additional effort for the selection processes.

The invention has now set itself the task of clearing the individually successive To solve setting processes in such a way that the plurality of hold-down devices are commonly assigned The setting device is only released for the next setting process, when the connection made for the previous setting process has been carried out. According to A further development of the invention is also provided in the event of a fault if the connection has not been made Alanneinrichtung made effective which the common Setting device releases.

The details of the invention are illustrated in hand an embodiment with the aid of Fig. ι and explained in more detail.

In Fig. 1 a house connection set ms with a Diirchschalteeinrichtung for the preselection Sb and a Diirchschalteeinrichtung for the output stage Lb is shown. A register Ri'K. ι switched on, which essentially has a pulse memory (magnets

I) and K) .

In Fig. 1 only a house record Hs is shown, although several such! Likewise, several registers are Jii'ji. i, AVg. 2, Λ '«' /, '. .v available, which can be connected to the various house sets.

After receiving the code number of the desired subscriber, the coated register is switched to the common for all Durehschalteeinrichtungen setting or marking M. In this are the magnets.S'ι to S "28, which identify the desired participant with the help of the rails and mechanical 'marking means assigned to them.

The switching system shown in FIG. 1 contains fifty closing possibilities, so that five decade relays /> ι to I) $ are available.

Since with each of the setting magnets Si to S25 two participants are identified by an additional magnet for each setting 527 or S28 each one participant of the first or the second group of twenty-five selected (see Fig. ia).

The switching functions are explained in more detail below.

It is assumed that the calling subscriber TIn ι is already connected to the connection set Hs after switching through the preselection stage Sb , so that the feed and pulse relay A and the occupancy relay C are attracted. A free register Reg. 1 is assigned with contact <r , so that the assignment relay CI is activated in this register. The latter switches with its contacts el ¹ to el ' ¹ all the necessary circuits to initiate the switching functions between the occupied house record and the connected register.

With contact he of the house set the relay / register is energized in pulses and transmits the first series of impulses (tens selection) to the 8g pulse memory D. This sets its switching arm d to the desired switching step according to the selected digit. In the exemplary embodiment it is assumed that a 2 was selected as the first digit, so that the decade relay D 2 is prepared. With contact d ^x of magnet D , the short circuit for relay I was canceled in preparation, so that after contact v ^{3 dropped,} the short circuit is completely eliminated and after the end of the first series of bursts of relay I, magnet E with contact I ^{2 is switched on in} preparation and at Reception of the second series of impulses (single choice) is set. Here, the switching arms e ¹ and e ² are set to a specific switching step according to the selected one digit. It is assumed here that a 5 has been selected as the unit number, so that the setting magnet S22 is set in advance.

After the end of the single selection, the selection relay We responds and switches on the relay Hi assigned to this register in the marker with contact whoever. However, this relay Hi can only respond if no other relay H has already picked up and therefore no other register has occupied the marker.

It is assumed that the marker M is currently free so that relay Hi can pick up, with its contacts no being switched. With contact Ai ¹ the chain to the other relays H is opened first, so that the marker cannot be reached by other registers at the moment. Furthermore, the prepared circuit for the decade relay D2 in series with the group relay Gi is closed with contact Ai ". This adds to the circuit for the setting magnet S 22 with contact dz ^v , so that when contacts Ai ^{1 v} and Ai ^{v are switched} through, the circuits are closed via the switching arms c ¹ and e of the pulse memory for the units digit. Since a 5 has now been selected for the units digit, only the switching arm e ^{1 is} effective, so that the setting magnet S 22, the switching relay Ui and the group relay in this circuit G 2 come to speak with

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Contact wi ¹ , the additional group switchover magnet S27 is switched on. The marking for the called subscriber is thus ended, so that the through-switching magnet LB for the output stage becomes effective ^{via the contacts s27, S28, Ai 111} , el ⁴ , Ib ^2. This also switches the wires a'-V through so that the connection to the called subscriber is established. The switch-through magnet LB remains after it has responded via a second circuit with contact Ib ² as a function of contact c ^{s of} the house connection set. After the switch-through magnet has responded, the selector relay (We in the register) is switched off with contact Ib ¹ , which with its contact we ² cancels the assignment of the marker again.

In the event of a malfunction, such as B. a wire break, the switching device LB is not switched on, so the setting identification can not be canceled. In this case, an alarm relay AL is switched on with a long time delay via contacts Ai to hx and gi "to gx ¹¹¹ , which with contact al ¹ cancels the assignment of the common setting device and with contact al ² the signal lamp SL and with contact al ³ the alarm clock W turns on.

As a result of this measure, the common setting device is temporarily released and can initially be used for the setting processes of other connections. After a certain time, which is determined by the drop in the relay AL , the first setting process is tried again.

Claims (12)

PATENT CLAIMS: 1.Circuit arrangement for telecommunication systems, in particular telephone systems, in which multiple switches, preferably those based on the crossbar principle, are used as connecting elements, which are composed of a number of individual switches with individually assigned actuating devices and a marking device extending perpendicular to the actuating devices and extending over all individual switches and in which an independent connection can be established via each individual switch, characterized in that the setting device (marker M) which is jointly assigned to a plurality of individual switches (e.g. individual switches) is only released for the next setting process when the previous setting process has been switched through is executed. 2. Circuit arrangement according to claim 1, characterized in that the several individual switches jointly assigned setting device is released for the next setting process if an alarm device (e.g. relay AL) has become effective in the event of failure. 3. Circuit arrangement according to claim 1, characterized in that after storing the code number of the called subscriber, a switching means (election relay We ) causes the request of the common setting device (marker M). 4. Circuit arrangement according to claim 3, characterized in that the occupancy of the common setting device is only effective when the latter is not otherwise occupied (e.g. register Reg. 2 or Reg. X). 5. Circuit arrangement according to claim 4, characterized in that the relays (H 1 to H x) which are located in the common setting device and assigned to the individual connection sets are arranged in a chain circuit in such a way that only one relay (H) can respond at a time. 6. Circuit arrangement according to claim 1, characterized in that the switching device (LB) is made effective by contacts of the actuated setting magnets (S27 or S28) in connection with a contact of the relay (Ai ^{111) assigned to the connection set occupying the common setting device.} 7. Circuit arrangement according to claim 6, characterized in that a contact of the switching device (Ib ¹ ) allows a switching means to become effective (drop of relay We), which cancels the occupancy of the common setting device (opening of contact e ² ). 8. Circuit arrangement according to claim 6, characterized in that if the switching device (LB) does not respond, a delayed switching means (AL) becomes effective, which temporarily removes the occupancy of the common setting device (opening of the contact al ¹ ). 9. Circuit arrangement according to claim 8, characterized in that the switching means (AL), which is effective in the absence of through- switching acknowledgment, temporarily switches on an alarm device (SL, W). 10. Circuit arrangement according to claim 8, characterized in that the switching means (AL), which is effective in the absence of through-switching acknowledgment, goes back into retirement with a delay when it is switched off. 11. A circuit arrangement according to claim 10, characterized in that after the idle state of the switching means (AL) with previously unsuccessful setting, the latter is repeated after a certain time. 12. Circuit arrangement according to claim 11, characterized in that other marker requirements between two on-positions Have priority. Referred publications:
Austrian patent specification No. 167 248. 1 sheet of drawings 1 509 562/08 9. 55