DE673881C - Circuit arrangement for telephone systems for the temporary blocking of connections in any traffic directions - Google Patents

Description

Circuit arrangement for telephone systems for temporary blocking of connections of any traffic directions The present invention relates on a circuit arrangement for telephone systems for temporary blocking of connections in any traffic direction.

Arrangements are already known in which certain connection points not authorized to establish connections in certain traffic directions are, while other junctions are none with regard to their traffic authorization Subject to restriction. Have access to the different authorized connection points to the same connection devices, special devices must be provided depending on the traffic authorization of the calling connection point and the traffic direction selected by this traffic direction, the establishment of certain connections through unauthorized connection points, e.g. B. by switching off the connection points or failure to switch through the connection path.

These distinguishing devices are now the connection points, their Traffic authorization is subject to a check, and the connecting routes accessible to them assigned. The switching elements that z. B. the unauthorized connection points when selecting a blocked traffic direction switch off or switch through the Prevent the connection route in the selected traffic direction are also included switched into the connection path, so that a change in traffic authorization the connection points, e.g. B. Conversion of authorized follow-up barks into unauthorized ones and vice versa, always requires special interventions in the connection path. These Arrangements are therefore not suitable for systems in which soon one or soon the other junction only temporarily from making connections any traffic directions should be excluded.

The arrangement according to the invention now shows a solution for these systems, which consists in that the connecting lines except for the usual connecting devices still to special connection devices (handles, buttons, contacts of voters) are connected, via which by the monitoring staff outside of the connection path lying down directions can optionally be switched on, the unauthorized traffic direction concerned when establishing connections or Traffic directions prevent speech traffic.

By connecting the monitoring devices according to the invention There are no special interventions in the wiring at the connection points, e.g. B. cutting open the connecting lines, etc., required; because it can for example by simply connecting the monitoring devices using a plug and handle the connection point in question from the establishment of connections any traffic directions -be excluded.

The drawing described below shows an embodiment the invention. We see two participants Ttzi and Tii who have one assigned to them Selection Y VLI'I or 11Y2 a number surge receiver GU 'can reach. By setting this numbered surge receiver to certain connecting lines and further setting of those that can be reached via these connecting lines, not here The calling subscriber Tit, or Tn, Get connections of one of them each desired traffic direction.

If, for example, the subscriber Tni should now be aware of the production of Connections of certain traffic directions are temporarily excluded, so you can for this exclusion time, for example, via one on your connecting line provided pawl plug in a monitoring or locking device Sp, which from a surge receiving device and a so-called follower, so that by setting the follow-up drive when dialing the number, a connection is established in the direction to be blocked with the corresponding wiring of the contact bank the follow-up drive can be prevented.

As the figure shows; is the subscriber T7t. regarding its connection establishment not restricted. However, should the connection point for any reason, e.g. in the absence of the owner of the connection point for other persons (e.g. servants etc.) that have access to the junction for certain traffic directions be blocked, so its connection line can also be locked by means of a plug and jack be connected to a locking device of the type shown at the participant Tni. This blocking device can also be switched off again by the subscriber Tni, if the restriction of the traffic authorization is lifted. You can see that one or the other connection point in their traffic authorization without any difficulty can be limited, whereby by appropriate wiring in the k - '= clock bank of the follow-up mechanism also changes the direction to be blocked accordingly can be.

In detail, the mode of operation is as follows: If the subscriber Tii, on whose connection line the blocking device Sp, which consists of the impulse receiving device and follow-up mechanism, is connected to restrict his traffic authorization, lifts his handset, then in a known manner by energizing the relay R1 via the speech wires (earth , Battery, resistor Wi, contact zi t1, subscriber Tit1, contact 13 t1, relay R1, earth) the preselector Vlf'i is started by the switching magnet D1 of the same is excited via earth, battery, switching arm d of the preselector VN- ', in the rest position, contacts 16r1, 14ti, rotary magnet D1, interrupter Ui; Earth. The preselector Vl; i'i searches in a known manner for a free number current surge receiver. As such, for example, has he reached the number current surge receiver GWi shown in the figure; This creates the following test circuit: Earth, battery, switch arm d of the preselector VW, on the contact segment, contact i6ri, windings II and I of the relay l @ i, switch arm c of the preselector VWi, contact 2ozzti (of the trigger frame of the number impulse receiver, not shown), Relay G1, earth. Relays T1 and C1 respond in this circuit. By opening the contact 44, the rotary magnet D1 is switched off and the preselector VTVz is stopped. By closing the contact 15 t1, the battery is placed directly on the winding I of the relay T1, so that the number current surge receiver reached is blocked against other occupancy. The relay C1 excited in the test circuit is used to document the number surge receiver Gli-'I, not shown in detail. At the contacts ii t1 and 13 t1 the call circuit is interrupted and the connecting line of the calling subscriber Tyia by closing the contacts io t, and 121, via which: switching arms ä and b of the preselector hlTt'1 to the feed back relays A1 and Bi in the first number current impulse receiver GIT , 'i switched through. In addition to these processes, the relays r1 and Dy (windings I) were already excited via the speech wires when the receiver was lifted in the blocking device Sp; so that the relay C was excited by closing the contact ra and its winding II short-circuited via its contact: 2 c for damping. By closing the contact 3 c, the relay R was also energized via this and the switching arm dm of the follow-up mechanism.

If the subscriber now sends number current impulses to set the number current surge receiver GTT, '1, in addition to relays A1 and 131, through which the number current surge receiver GU' is set in a known manner, relays A and Dr in the monitoring or blocking device are also set accordingly to dial the number. As a result, the following circuit is created for the switching of the follow-up mechanism: earth, battery, switching magnet Dm of the follow-up mechanism, contacts Sc, 7a, 6r, earth. The follow-up drive is also adjusted by four switching steps based on the assumption that the number surge receiver G11 "1 is set by four current surges has been made in -the contact bank Mitlaufwerkes so the wiring that regardless of the further connecting structure, a buzzer sound via the switching arm ding in position d. the Mitlaufeinrichtung and the relays a and Dr comes across the windings II effect, by inductive transmission to the Windings I of the relays A and Dr via the speech wires to the device of the subscriber 7'n, and makes speech communication with the subscriber in the selected traffic direction impossible.

It is now not necessary that the locking device already after Recording a series of current impulses becomes effective, it can rather only after recording several series of current impulses or, if wired accordingly, also after recording entire subscriber numbers become effective, so that by connecting the blocking device a temporary blocking of network group calls or calls, for example is possible with certain offices or only with certain participants. Intended to the blocking device will only take effect after several digits have been recorded Of course, the summex device only after recording of this specific series of numbered current impulses switched on; the switching of the tracking mechanism through several series of current impulses is achieved in each case that the corresponding contacts of the follower, of which a further switching of the follow-up mechanism is to take place, the relay R is switched on, which is then actuated again via the switch arm dm is and so an influence of the switching magnet Dm of the idler via the Contact 6y enables further dialing of the number.

It should also be mentioned that it is completely indifferent to the idea of a solution is how the blocking device is connected to the connection line and in what way the locking device is designed in detail.

Claims (1)

PATENT CLAIM-1r: i. Circuit arrangement for telephone systems for temporary blocking of connections in any traffic directions, thereby characterized in that the connecting lines except for the usual connecting devices still to special connection devices (handles, buttons, contacts of voters) are connected, via which by the monitoring staff outside of the connection path horizontal monitoring devices can optionally be switched on, which during construction of connections of the unauthorized traffic direction or traffic directions concerned stop speech communication. a. Circuit arrangement according to claim i, characterized gekennzeichnec, that the speech traffic is suppressed by switching on a background noise. 3. Circuit arrangement according to Claim i, characterized in that the monitoring devices (Sp) consist of a follower drive, the surge receiving devices of which have Jack and plug connected to the connection line to be temporarily blocked will. Circuit arrangement according to Claim 3, characterized in that upon adjustment of the follow-up mechanism on the blocked traffic direction, a buzzer device is effective that a voice communication of the calling unauthorized connection point with the desired connection point prevented.