DE906230C - Circuit arrangement to identify the value of a connection in the case of outgoing automatic telephone traffic - Google Patents

Description

Circuit arrangement for identifying the value of a connection for outgoing automatic telephone traffic It is one in telephony technology known measure, a participant connection by applying different potentials to be marked as local or remote. Long distance connections are opposite Local connections referred to as higher value. This marking must be used for both calling as well as the called subscriber.

The invention is now concerned with the characterization of the valence a connection with outgoing traffic, i.e. with the calling subscriber. In known Arrangements are made using follower drives. The subscriber connection is thereby at Receipts are generally marked as occupied in the usual way. Is a If a remote connection is established, i.e. a higher-quality connection, then the identification is made when the first counting pulse arrives; d: h. the remote number is only then given, when the connection establishment actually led to the goal and a conversation to be led. In these arrangements, however, the case may arise that during the setting up of an outgoing remote connection, the calling subscriber in turn for a long distance call. Since the subscriber line is still occupied is marked, the incoming long-distance call has priority. To avoid this, It has already been suggested to make an outgoing long distance call through a contact of a shared drive is to be marked as higher value if the participant when dialing the number by dialing the area code indicates that he is in the local area network want to leave.

For the sake of simplicity, the present invention dispenses with a particular one Follow-up drive and takes a marking of the valence of a connection in such a way before, that each outgoing connection is preliminarily marked as higher value and that the beginning sign of a low-order connection as a criterion for both the Low-value identification of the outgoing connection as well as for the implementation the corresponding type of count is decisive.

In Figs. I and 2 of the drawing, two embodiments are shown, whose mode of operation is described below. The circuits are only insofar than is necessary to understand how it works.

In FIG. I, the windings I and II of the relay A i connected to the speech wires a ' and b' are energized when the current impulse transmission is detected. In the circuit -, P, P, a I, C i, b II, - # - relay C, i is excited and thereby held in the circuit -, Wi 5, ci IV, b IV, E i, -the line control relay E i . The contacts ci `1I and e i II short-circuit the resistor Wi 2 and connect direct earth to the c'-wire leading to the subscriber. As a result, the subscriber line is identified as being remote-manned as soon as the impulse transmission is occupied.

When dialing the number, relay Ai drops out in the rhythm of the loop interruptions of the dial and transfers; , ci III, ai II, a "-Ader continues the dialing impulses to the following selection level. When relay A i drops out for the first time, relay V i is energized -, P, P, ciI, V1 (1), aiI, b11, through contact vi I the a "wire is cut backwards, and through contact vi II the relay B is energized via -, Wi 5, c i IV, v i II, B (I) , which is in the circuit -, P, P , a i I, C i; B (II), -E-continues itself and provides the relay E i with a new feed circuit -, Wi 3, ei I, z i I, b IV, E i, -f-. If a local connection has been established, relay Z i is energized via the closed contacts b III and ei III with the start character, ie with a permanent negative potential on the b "-wire. Contact zi I interrupts the circuit for relay E i and sets the Counting relay Z in the subscriber circuit via the d'-wire to voltage: The relay E i, which is delayed due to the parallel capacitor C and resistor Wi q, limits the counting pulse on the one hand by ei I and on the other hand switches by opening e i II in the c- Wire the resistor Wi 2 back on, whereby the subscriber circuit is marked as occupied and the preparatory given higher-order marking is canceled. In addition, the relay Z r is switched off again from the b "wire by ei III.

In the case of a long-distance connection, there is no permanent minus on the b "wire as a starting character, but short negative pulses are sent to this wire. These pulses are used to count the conversation units according to time and zone and energize the relay Z i, but they are not long enough in order to cause the delay relay E i to drop out. Therefore, the relay Z i remains permanently switched on at the b "wire, and the contact ei II continues to put direct earth to the c 'wire and thus maintains the remote identification. every time the relay Z i responds to a minus pulse, -, Wi 3, ei I, z = I, d'-wire, z, -E-.

a counting pulse is given to the subscriber circuit. The count takes place right here.

In the other exemplary embodiment according to FIG. 2, the preparatory process takes place higher quality marking with the onset of choice.

When the current impulse transmission is activated, relay C is excited in a known manner via -, P, P, a 2 I, C 2, +.

Relay A 2 drops out in the rhythm of the loop interruptions when dialing the number and transmits the dialing pulses to the line leading to the next dialing level through its contact a: z II. With the. The first time relay A 2 drops out, relay V 2 is excited via -, P, P, c 2 I, V 2 (I), C 2, -f, the following circuit for relay F closes: -, F, z 2 1I , c 2 IV, v 2 1I, ez 1I, c 2 V, -E-. The contact f V puts direct earth, so the sign of a higher-valued connection to the c'-wire.

If the choice has led to a local connection, i.e. a low-order connection, the relay Z 2 responds to the beginning character (permanent minus on b "-wire) via contact f I and contact v 2 IIT, which has dropped out again. Z 2 1I disconnects Circuit for relay F, which drops out with a delay and also disconnects relay Z 2. When relay F drops out, f V removes the remote identifier (direct earth) from the c'-wire and marks the subscriber line as occupied When the subscriber hangs up on the local call, relay A 2 drops out. This causes relay C 2 to drop out with a delay, and relay V 2 (I) is energized for the duration of the drop-out time of relay C 2. Via -, F, z 2 1I , c 2 IV, v 2 1I, e 2 1I, c 2 V, -f can respond again to relay F, which once again briefly brings relay Z 2 with f I after c 2 VIII has dropped. Via -, Wi 6, f VI , x 2 I, c 2 VI, d'-Ader a counting pulse is sent to the counting relay Z. Its duration is limited du rch the drop-out time of relay F. If, instead of the permanent minus, only pulses are sent to the b "wires during a remote connection, relay Z 2 responds every time, but relay F does not drop because the pulse duration is too short. The subscriber line remains marked as remote, and the relay Z 2 remains permanently connected to the b "wires. The counting pulses coming via this wire excite via -, Wi 6, f VI, z 2 I, c 2 VI, E 2 ( 1I), the auxiliary relay E 2. A pulse is only passed on to the counter relay z when the relay Z 2 has dropped out again -, Wi 6, f VI, z 2 I, e 2 I, d'-Ader, z, - @ -. The length of the pulse is determined by the release time of relay E: z.

Thus, in this second embodiment, the counting pulses recorded inversely during remote counting. There is of course the option only the first pulse inversely, but the following pulses count directly, which is a makes a small adjustment necessary.

In both cases, an outgoing connection is preliminarily considered to be elevated marked, and only when the beginning character of a lower valued occurs Combination turns the higher-order identifier into another, the lower-order one Connection converted to corresponding identifier.

Connections made via a manually operated remote station or time zone counter with counting at the end of the conversation are state-of-the-art not marked as high-order connections, as in these cases there is no beginning character is directed to the participant. The invention offers the advantage that also in these If the value is higher, it is automatically identified when the connection is established and remains until it is triggered.

Claims (3)

PATENT CLAIMS: i. Circuit arrangement for telecommunications systems, in particular telephone systems with dialer operation, in which the value of a connection is identified in the subscriber circuit and in which the counting is carried out in different ways for connections of different values, characterized in that each outgoing connection is preliminarily identified as high-value and that the start character of a low-order connection is decisive as a criterion for both the low-order identification of the outgoing connection and for carrying out the corresponding type of counting. 2. Circuit arrangement according to claim i, characterized in that when the start character occurs, a lower value Connection, e.g. B. Permanent minus on the b "wire, with the conversion of the higher-valued License plate, e.g. B. license plate "remote occupied", in a lower value, z. B. Identification "Occupied", at the same time a simple counting pulse (local counting) to the subscriber counting relay is given. 3. Circuit arrangement according to claim i, characterized in that when the start character of a low-order connection occurs through switching means (Z 2, F) a conversion of the value indicator takes place, but that the count (Local counting) is only carried out after it has been triggered by the calling subscriber will. q .. Circuit arrangement according to claim 2 or 3, characterized in that when a switching criterion occurs, which is the beginning of a low-order The connection is the same in electrical terms, but only lasts for a short time, z. B. Minus pulses on the b "wire, a conversion of the value indicator is prevented. 5. Circuit arrangement according to claim i, characterized in that that if the beginning characters are missing, the higher-order identifier is retained.