DE1138434B - Circuit arrangement for telephone exchange systems with two groups of participants - Google Patents

Description

Circuit arrangement for telephone exchange systems with two groups of subscribers In the case of combined hotel facilities, the subscriber connections are in two Divided into groups: guest connections and staff connections. The guests should be theirs Connections received only with the help of the operator console while the staff establish the connections independently. The subscriber connections are accordingly referred to as ZB connections and W connections. The inquiry participant connections the trunk lines are mostly implemented as ZB connections, so that inquiry connections can only be set up with the help of the mediation. The W subscribers can with this version do not set up their inquiry connections independently.

Another option is to transfer the office in. Two Divide groups. With such an arrangement, however, the traffic performance decreases, and difficulties arise with incoming connections.

The invention is based on the object of a circuit arrangement for private branch exchanges with two groups of subscribers, of which the establish a connection with each other in automatic dial-up traffic and the others only receive connections with the help of the attendant console, especially for combined ones To create hotel facilities in which see the working method for the individual groups of participants does not change and also - no group division of the office transfers with the reduction the transport performance is required. According to the invention, this is achieved by that a switching point is provided in the inquiry path of the transfer of office, which ever the consultation path with one or the other group according to their switch position associated inquiry subscriber connection connects, and that when the Office transfer via a central, switching element an identifier for group membership of the connected subscriber is transferred to the trunk transfer, the preparatory Connection of the consultation connection corresponding to the participant group with the Inquiry switch initiated.

The invention will now be based on the embodiment shown in the figure explained in more detail. These are only the details necessary to understand the invention shown. Coordinate switches are provided as connecting elements.

After submitting the official registration number. by a W subscriber or, in the case of ZB subscribers, through the exchange, the exchange transmission A Ue is connected to the subscriber Tlrc via the exchange dialer AW. When marking of the subscriber which is not shown -Stangenmagnet (S) is activated and closes a contact s. For example, the subscribers of this contact over routings to the authorization group BG relay is connected in the marker M. Contact bg closes and prepares ground potential on the line to winding I of relay RU. In the transfer of the office, an occupancy relay C, not shown, is actuated during the occupancy. When the exchange dialer AW is switched through, the contact aw 1 closes the circuit for the winding I of the relay RU and the contact aw2 the circuit for the test relay P. The test relay P checks for the subscriber circuit and, with its contact p 2, interrupts the response circuit for the Relay RU. Relay RU, however, is maintained via its winding II and its own contact ru 1. The contacts ru 2 and ru 3 switch the inquiry switch to the inquiry participant connection for ZB operation [Rfr, Tln (ZB)] in preparation. After the exchange dialer AW has been switched through, the bar magnet is triggered again.

If the subscriber now presses his earth button, the relay X responds in a known manner and switches on the relay U with its contact x , which with its contacts u 1 and u 2 switch through the subscriber to the inquiry connection. An internal transmission for ZB traffic is now occupied via the inquiry subscriber circuit Rfr, Tln (ZB) and a call is generated at the exchange. The operator can now forward the connection. When the connection is triggered, the relay C, not shown, drops out, and the holding circuit for the winding II of the relay RU is interrupted by the contact c 2.

In the case of a W subscriber, the relay RU does not respond because the corresponding There is no routing. In the case of an inquiry call, the inquiry subscriber circuit is now Rfr, Tln (W) is busy, and the subscriber can connect in a known manner build it yourself.

Claims (2)

PATENT CLAIMS: 1. Circuit arrangement for telephone extension systems with two groups. of subscribers, one of whom establish a connection with each other in self-dialing traffic and the others only receive connections with the help of the operator station, in particular for combined hotel facilities, characterized in that a switching point (ru2, ru3) is provided in the inquiry path of the office transmission (AUe), which depending on their switching position, the inquiry path connects to the inquiry subscriber connection [R f r, Tln (ZB), (W)] assigned to one or the other group, and that when the office transmission is occupied via a central switching element (M). Identifier (contact bg) for the group membership of the connected subscriber is transmitted to the office transmission, which causes the preparatory connection of the subscriber group corresponding inquiry connection with the inquiry switch. 2. Circuit arrangement according to claim 1, characterized in that that the group identifier is assigned to the subscriber and assigned to the occupancy briefly activated contact (s) is triggered during the transfer of office.