JPS6223699A - Multiple party line identification system - Google Patents

Abstract

PURPOSE:To prevent previously a problem in charging by providing an oscillator oscillating a signal having a frequency assigned fixedly to each subscriber and adding a receiver and a controller to an exchange side to identify surely a caller number of a multiple party line. CONSTITUTION:An oscillator 7n oscillates a prescribed frequency corresponding to an inherent subscriber ID number assigned to each subscriber. When a subscriber hooks off a handset at a call by the subscriber, an oscillator 71 of a telephone set 61 oscillates a signal having a frequency f1 assigned to the said subscriber. Thus, the signal in the frequency f1 is sent through a subscriber line 5 and reaches a subscriber circuit 2 of the exchange. The signal is received by a receiver 3 provided to the subscriber circuit at the exchange side and the signal in the frequency f1 is identified and the controller 4 recognizes the subscriber ID number ABC-XXX1 of the caller. After the ID number is recognized in this way, the step transfers to the procedure of the normal call processing.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a multi-subscriber system in which an exchange and a plurality of telephones are connected by a common subscriber line), and in particular, The present invention relates to an identification device for automatically identifying subscribers.

[Conventional technology]

The spread of telephones has been remarkable, with one telephone being installed per house in densely populated areas such as subcommittees, and many telephones being installed in the same house in shops and offices, and used for a variety of purposes. ing. Furthermore, in depopulated areas such as mountain villages and fishing villages where transportation and other conveniences are inconvenient, communication by telephone is necessary as a means of communicating with each other. In such depopulated areas, adjacent houses are built a considerable distance apart, and it is therefore desirable to install one telephone in each house for use in emergencies.

However, unlike in densely populated areas, the usage rate of telephones is inevitably low, and therefore there is no need to install a large-scale i-high speed line; rather, small-capacity, simple, and easy-to-maintain equipment is required.

Therefore, a multi-subscriber system is used in which a plurality of telephones are connected to one exchange through a common subscriber line. Since they are connected by a common subscriber line, when a subscriber makes a call, the exchange must use some method to identify each calling subscriber number assigned to that subscriber.

Conventionally, in this type of system, each co-subscriber is assigned a subscriber ID number indicating the calling subscriber number in advance, and each co-subscriber himself or herself assigns the subscriber ID number, which indicates the calling party number, before dialing the called party number of the other party. The user then dialed the subscriber ID number provided, and the exchange recognized the calling subscriber number.

[Problem that the invention seeks to solve]

In such a multi-subscriber system, the ID number dialing recognition method requires only a simple identification device to be installed on the exchange side, making it possible to simplify the system configuration and facilitate maintenance and inspection. Although this is originally a preferable form, the caller may dial the ID number of another subscriber, so if that happens, the exchange may recognize the call as being from another subscriber. In particular, it has a serious drawback in that it causes billing problems.

[Means for Solving the Problems] The present invention provides an oscillator that oscillates a signal with a frequency fixedly assigned to each subscriber in each telephone of a multi-joint adder, and oscillators that emit signals from this oscillator. A receiver is provided at the subscriber interface of the switch for receiving the signal and identifying the subscriber ID number.

[Effect]

The originating subscriber number can be automatically and reliably identified.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings.

The figure is a block diagram of a multi-joint subscriber identification system showing one embodiment of the present invention. 1 is a network 1, to which an exchange is connected and used for telephone calls. A subscriber circuit 2 is provided with various switch circuits.

3 is a receiver that receives and identifies signals of a predetermined frequency. Reference numeral 4 is a control device which recognizes the calling subscriber number from the signal of a predetermined frequency identified by the receiver 3. The exchange has these subscriber circuits 2. A receiver 3 and a control device 4 are provided. 5 is a subscriber line, which connects the exchange and a plurality of telephones. 6n is a telephone set and includes a handset and receiver. 7n is an oscillator which transmits a predetermined frequency corresponding to the unique subscriber ID number assigned to the subscriber. The telephone 61 includes this oscillator 71.

Now, the operation of the multi-joint subscriber identification system configured as described above will be explained. When a subscriber makes a call, when the subscriber picks up the handset, the oscillator 7 of the telephone 61
1 oscillates a signal at the frequency f1 assigned to this subscriber. Therefore, the signal of this frequency f1 is transmitted to the subscriber line 5.
is transmitted and reaches the subscriber circuit 2 of the exchange. On the exchange side, the receiver 3 provided in the subscriber circuit receives this signal, identifies it as a signal of frequency f1, and sends the control device 4 to the caller's subscriber ID number ABC-XIXXI.
Recognize. After the ID number is recognized in this way,
Shift to normal call processing procedures.

〔Effect of the invention〕

The present invention prevents billing problems by installing an oscillator in a telephone set and adding a receiver and its control device to the exchange side, thereby reliably identifying the calling number of a joint subscriber. be able to.

In addition, if methods such as a secret device and frequency ringing for individual calls are adopted in multi-community telephones, it becomes possible for individual subscribers to share subscriber lines and subscriber circuits in the general public telephone network. It is also possible to provide economical public telephone service in depopulated areas.

[Brief explanation of drawings]

The figure is a configuration diagram showing an embodiment of the present invention. 1...-Network, 2...Subscriber circuit, 3.
・Receiver, 4・Φ・・Control device, 5011 reference φ subscriber line, 61~6n...Kenden packing machine, 71~7n...
・Otsu 7 rate.

Claims (1)

[Claims] In a multi-subscriber system in which an exchange and a plurality of telephones are connected by a common subscriber line, an oscillator having a predetermined frequency is provided for each telephone of the multi-subscriber, and the exchange receives signals transmitted from the oscillator. 1. A multi-joint subscriber identification system, comprising a receiver that receives a signal and identifies the originating subscriber number of a subscriber corresponding to the frequency.