DE1566826B2 - People search facility - Google Patents

Description

It is a people search facility in a private branch exchange known to a voter serving to identify the subscriber to be searched for (DT-PS 708 066), in which this voter both through controlled choice on a particular to be searched for Participants can be hired as well search-like automatically on the connection line of a preferred subscriber with an incoming for this subscriber Call stops. The called subscriber answers within the known people search facility If not before a certain period, a switch to a search facility and takes place automatically the submission of a search character by them. The wanted subscriber who notices the search character dials up a telephone set closest to the private branch exchange telephone system a specific and for all subscribers the same reporting code and is thereby via the named search facility with the searching subscriber tied together. The effort involved in getting to the nearest phone has proven to be disadvantageous.

ίο The invention is based on the object of a people search device to create that avoids this disadvantage. This task is performed at a people search facility in a private branch exchange telephone system, in the case of a call by an extension participant on the extension number of the called subscriber in addition to the normal callsign special Search characters are triggered by a search device by the features described in claim 1 solved. Advantageous further training are in the

ao subclaims described.

In the case of a call by an extension participant on the normal extension number of the person called The subscriber not only hears the call sign on his telephone set, but it is also heard by the Call sender of the paging system sends out the tone sequence assigned to the called subscriber.

By using signal converters according to the invention, it is achieved that an extension subscriber to call another extension subscriber who is a paging receiver only needs to dial the normal telephone number once. Is the called subscriber at his Place, he picks up his telephone receiver and a voice connection is established via the extension telephone system instead of. However, if he is not at his place, the call will reach him via his person search recipient, without the calling subscriber having to dial again.

If the paging system is not equipped with feedback transmitters, the person called becomes a perform the agreed action, e.g. B. go to the nearest phone and call his secretary.

On the other hand, there is the paging system with feedback transmitters and voice connections in both directions equipped, so according to a development of the invention by switching on the feedback transmitter the called person establishes a voice connection with the calling extension subscriber wirelessly between the called person and the control center of the person search facility and via wire between the control center and the private branch exchange and the calling subscriber. A voice connection then takes place in any case, regardless of whether the called subscriber is currently answering in its place or in another part of the house or work.

About the people search facility, which can only be called by one person at a time, if only if a single carrier frequency is available, it is advisable not to use it all the time, that the code sequence is only then sent out to several callsigns of an extension subscriber will. As a result, the people search facility is only used when actually the called subscriber is not at his place and therefore does not pick up the telephone receiver.

Further measures to avoid unnecessary use of the people search facility consist in this.

that when picking up the telephone receiver at the wanted subscriber or by switching on the feedback transmitter the called person automatically terminates the wireless transmission of the code sequence. Furthermore, means can be provided for the same purpose, which limit the call time and a limitation the time of speaking through the people search facility.

For the same reason, it is advantageous that the feedback transmitter is only available from the called person can be switched on after a call. It is necessary that by switching on the feedback transmitter Ring signals are ended. However, unauthorized switching on of a feedback transmitter could cause the Interrupt another person's call which is »5 avoided by the aforementioned measure.

The drawing shows an exemplary embodiment of the invention in a block diagram. In the upper part of the drawing above the dashed line, the extension telephone system is shown and below · ^»0 the dashed line, the paging equipment.

At the top left is a device 1 of a subscriber and at the top right is a device 2 of another subscriber shown. In this example, set 1 is that of the calling subscriber and set 2 of the called party Participant. Between sets 1 and 2 are the ones in the extension telephone exchange Selection 3, group selector 4 and line selector 5 can be seen.

The person search device consists of the transmitter 6 shown at the bottom right, the associated hybrid circuit 8 and the signal converter 9 according to the invention, on which the private branch exchange telephone system works.

The people searched for via the people search facility, who are also the wanted participants in the PBX are carry a small device 10 with them, which fund from a receiver a transmitter S.

The operation is carried out in the manner described above.

1 sheet of drawings

Claims (8)

Patent claims: 1. Person search facility in a private branch exchange telephone system, in the case of a call by an extension participant on the extension number of the called subscriber, special search characters in addition to the normal callsign triggered by a search device, d a characterized in that the private branch exchange telephone system with the paging transmitter (6) of a wireless paging system is connected via a signal converter (9), which represents the search device and the transmission caused by the calling sender (6) a tone sequence corresponding to the dialed number. 2. Person search device according to claim 1, characterized in that the key tone sequence only is then sent out to multiple callsigns of an extension subscriber. . 3. Person search device according to claim 1 with transmitters for feedback and with voice connections in both directions, characterized in that by switching on the feedback transmitter the called person establishes a voice connection with the calling extension subscriber wirelessly between the called person and the headquarters of the people search facility and over Wire established between the exchange and the private branch exchange and the calling subscriber will. 4. person search device according to claim 1, characterized in that when removing the telephone receiver the wireless transmission of the sequence of key words is automatically terminated at the wanted participant. "5. Person search device according to claim 1, characterized in that by switching on of the feedback transmitter from the called person 'the wireless transmission of the tone sequence automatically is terminated. 6. Person search device according to claim 1, characterized in that means are provided which limit the call time. 7. Person search device according to claim 1, characterized in that means are provided which limit the time spent talking through the people search facility. 8. person search device according to claim 1, characterized in that the feedback transmitter can only be switched on for the called persons after a call.