DE899680C - Subscriber circuit for call seekers - Google Patents

Description

The invention ¹ relates to a subscriber circuit for call seekers formed exclusively from contact groups with ten and one contact sets, in which a trigger relay which is responsive in the loop circuit and is jointly assigned to a group of customer lines is brought to waste after setting the caller to the group and thereby the calling subscriber Individual subscriber relays marked on the call finder are activated, for telecommunication systems, in particular telecommunication systems.

It already exists: a subscriber circuit · for so-called case voter became known, in which one of a group of subscriber connection lines ai common anilass relay when producing a Loop at a subscriber station of this group and after setting the call seeker to this group comes to waste by short circuit, whereupon · the calling station assigned step relay in the first stage responds and the calling line at the caller indicates.

The purpose of the invention ¹ is to create a subscriber ^{circuit 1} for call seekers formed exclusively from contact groups with ten and one contact sets, in which only a single ordinary relay is required for each subscriber line, whereby the cost of the resources to be used individually is comparatively low. According to the invention this is achieved in that the Anilaßrelais switches the group contact sets of the call seeker controlling Voirprüfrdais and the group corresponding contact set and is brought to waste depending on the Voirprüfrelais and group contact set, whereby the only the subscriber line 'individually assigned isolating relay responds and disconnects the Reason-

Circuit switches through the test circuit prepared by the pre-test relay and group contact set, and that the associated single contact set is switched depending on the test process. The invention will be described in more detail using three examples with reference to FIGS.

Fig. Ι shows the subscriber circuit in connection with a call seeker, which is designed as a relay selector. "If the subscriber loop if closed, the group of Teilnehmarn associated Anlaßreiais speaks to ι for the call via the viewfinder of participants: - connection line associated participants relay T.

_1S +, Wi, ill, α-wire, subscriber set,

& -Ader, T (T), An 1, -.

In this circuit, the relay T, which is kept low in relation to the high-resistance relay An I, does not respond. The circuit for the test relay Vp in call seeker ^{1 is} closed via the contact at ι II:

+, anill, bil, VP, -.

Through contact ^ ¹ V the relay B, which is activated by bridging a resistor W 5, is activated and delayed:

+, am II, vpY, W 4, B / Ws, -.

Contact b TI prepares the response circuit for the multi-contact relays Z1, Z 2 ... Z10, each of which is assigned to a group of participants - However, only that is actuated in which the circuit is triggered by a contact of the corresponding Occasion relay is closed. In the example it is Zi.

+, 611, Zi, vpHl, ami, -.

Relay Z1 remains on contact s 1 VI in Ab ^ dependent of contact b II for the duration of. 40 connection:

+, 611, Zi, ZiVI, Wz, -

As soon as the contact si V has closed, the starting relay An 1, the resistor W6 , is placed parallel to the winding.

/ -, Am / -, W6, 21V, VpYlZT (I), ti, α- Ader, Tailnehmerapparat, fr-Ader, ill, Wi, +.

The sub-relay T ((I) thereby receives increased current throughput and responds. The starting relay An ι is thrown off.

Since relay VP is still activated, relay T is held in the test circuit via winding II, in which a second relay Ei (one-off relay), which characterizes your subscriber line, is activated:

-, T (II), i III, s ι IV, vp IV, Wz, E 1, 6III, +.

Kontakteil, ill separate in the subscriber circuit the battery from the speech wires.

A rapid drop in the starting relay. To achieve this, as shown in FIG. 2, instead of the resistor W 6 (FIG. 1), a second winding is looped into the short-circuit current circuit. This second winding An (II) is connected differentially to the first An (T).

In order to get even more favorable switching conditions, one group of subscriber connection lines, e.g. B. 1 to 5 and 6 to 10 are distributed over two differentially switched windings An 2 (I) and An 2 (ill) , as is shown schematically in FIG.

In the three examples, if two participants in the group have picked up their handset at the same time, the Halitekrais of the subscriber relay of the subscriber who is higher in number is interrupted by a contact of the relay determining the last digit of the other subscriber, so that the latter is higher in the digit Subscriber can occupy the next caller through the chain connection. In the usual way care is taken further for the fact that is in occupancy of the subscriber line selector, the relay T via a secondary winding which is disposed in the Prüfader operated and the called subscriber is separated from the starter circuit.

Claims (6)

PATENT CLAIMS: i. Taimehmerschaltung for call seekers made up exclusively of contact groups with ten and one contact sets, in which a starting relay responding to a group of subscriber lines and assigned to a group of subscriber lines is brought to waste after the call seeker has set the group and thereby the individual subscriber relay marking the calling subscriber on the call seeker comes to response, for Fernnielde-, in particular remote ■ intercom systems, characterized in that the starting relay. (Am) a dia group contact set (Zi to Z10) switches the call seeker controlling the Voirprüfrelaiis and the contact set corresponding to the group (z. B. Si) and is brought to waste depending on the pre-test relay and group contact set, whereby the only one of the subscriber line individually associated cut-off relay (T) and responsive disconnection of the starter circuit by the Vorpiüfrelais group and contact set: prepared test circuit ■ switches through, and that is switched in response to the Prüfvoirgang the associated one set of contacts. 2. Subscriber circuit according to claim 1 for call seekers, which consist of relays, of which a group of multiple contact relays are provided, characterized in that the starter relay (Am) through contacts of a group of tail subscriber connection lines associated Vieillcontaktrelais (Zi) and the test relay (Vp ) is short-circuited. 3. Subscriber circuit according to claim 1 and 2, characterized in that contacts of the Groups of subscriber lines orderly Anlaßrcilais (am to anio) via Schaltimittsl (vp) of the caller each prepare a circuit for a multi-contact relay (Z ι bisZ io) of the Amrufsuchers close preparatory. 4. Subscriber circuit according to claim 1 and 2, characterized in that the current amplification takes place by switching on a second winding (AnI in Fig. 2) of the starting relay differential switched winding (AnIl) via switching means (vp, Z1) of the call seeker. 5. Subscriber circuit according to claim 1 and 2, characterized in that for the starting relay · two windings (An2l, II in Fig. 3) are provided, one of which is a group of Teilnefameiranschlussfeitungen (z. B. ι to 5) and the other winding (An2.1V) connected to the first differential is assigned to a different group of subscriber connection lines (e.g. 6 to 10), and that the current gain for the subscriber relay (T 1 to T 5, T 6 to T 10) by short-circuiting the windings (A% 2l, H) of the starter relay via switching means (Z ₁ VP) of the call seeker. 6. Subscriber circuit according to claim 1 to 5, characterized in that two windings (TI, II in Fig. 1) are provided for the subscriber relay, one of which (TI) is assigned to the subscriber line and the other (TII) is assigned to the test wire. 1 sheet of drawings 1 5643 12.