JPH0279551A - Electronic exchange - Google Patents

Abstract

PURPOSE:To allow a called party to listen to a call tone and to identify an extension caller by outputting a specific call signal from a call signal generator when a number of the caller extension telephone set is coincident with a number stored in a storage device. CONSTITUTION:The user of an extension telephone set 1 applies a prescribed operation in advance from the telephone set 1 and registers an extension telephone set 2 as a designated extension. When the user of the telephone set 2 dials the telephone set 1, a central controller 7 reads out the storage content of a main storage device 8 and when the number of the telephone set 2 is stored as the number designated by the telephone set 1, the central controller 7 controls a channel switch 5 to connect the telephone set 1 and the call signal generator 6 to allow the generator 6 to output a specific call signal different from a normal signal. Since a specific call tone different from a usual tone is sounded from the telephone set 1, the user of the telephone set 1 listens to the call tone and can recognize that the call comes from the user of the telephone set 2.

Description

[Detailed description of the invention] [Industrial application field] TECHNICAL FIELD The present invention relates to electronic switching equipment.

[Conventional technology]

Conventional electronic exchanges are capable of changing the ring tone when an incoming call is made to an extension telephone, depending on whether the call is from the extension or the central office line.

[Problem to be solved by the invention]

However, in the case of an incoming call connection from one extension to another in this type of electronic exchange, it is not possible to change the ring tone when a call arrives from a specific extension to a specific extension. If this were possible, it would be very convenient for the called party to be able to identify the extension caller by hearing the ringing tone.

The present invention has been made with this point in mind, and its purpose is to provide a noodle machine with an electronic communication system that can emit a different ringing tone than usual when an incoming call is connected from a specific extension to a specific extension. It is about providing.

[Means to solve the problem]

The electronic switching system of the present invention includes: a calling signal generating device that outputs a specific calling signal; a storage device that stores the number of a second extension telephone for the first extension telephone; When there is an incoming call on the first extension telephone and the number of the calling party's extension telephone matches the number stored in the storage device, the particular calling signal is outputted to the first extension telephone by the calling signal generating device. The invention is characterized by comprising a control means for controlling the operation.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an electronic exchange according to the present invention. This electronic switchboard has call path switch 5.
, central control device 7, main storage device 8, subscriber line circuits 3, 4
, and a calling signal generator 6. and,
Extension telephones 1.2 are connected to the call path switch 5 through respective subscriber line circuits 3.4, and a ringing signal generator 6 is also connected thereto. Moreover, the central control device 7
It is connected to a communication path switch 5, subscriber line circuits 3 and 4, a ringing signal generator 6, and a main memory 8.

Next, the operation will be explained. User of extension telephone 1 is telephone 1
Perform a predetermined operation in advance to register extension telephone 2 as a designated extension. That is, when the user inputs the number of the telephone 2 based on a predetermined operation, the central control unit 7 receives it through the subscriber line circuit 3 and stores it in the main memory 8 as the number designated by the telephone 1. do.

After that, when the user of telephone 2 makes a call to telephone 1, central controller 7 reads the configuration contents of main memory 8 and checks whether the number of telephone 2 is stored as the number specified by telephone 1. investigate.

In this case, since the number of the telephone 2 is stored by the above-mentioned registration operation, the central control unit 7
to connect the telephone a1 and the calling signal generator 6,
``Furthermore, the calling signal generating device 6 is made to output a specific calling signal different from normal calling signals. As a result, the telephone 1 emits a specific ring tone different from the usual one, so that the user of the telephone ml can open the ring tone and recognize that the call is from the user of the telephone 2.

On the other hand, if the telephone 1 receives a call from an extension telephone (not shown) that is not registered as a designated extension, the central control unit 7 generates a ringing signal because the number is not stored in the main memory 8. The device 6 is made to output a normal ringing signal.

In this way, with the electronic switching system of the present invention, when an incoming call is connected from a specific extension telephone to a specific extension telephone, a different ring tone than usual can be sounded, so that the called party can open the output tone and dial the extension. Callers can be identified.

〔Effect of the invention〕

As explained above, the electronic switchboard of the present invention includes a calling signal generator that outputs a specific calling signal, a storage device that stores the number of a second extension for a first extension, and a When a call is made and an incoming call is received at the first extension telephone, and the number of the calling party's extension telephone matches the above-mentioned number stored in the storage device, the ring signal generating device sends a specific ring signal to the first extension telephone. and control means for outputting the output.

Therefore, in the electronic switching system of the present invention, when an incoming call is connected from a specific extension telephone to a specific extension telephone, a ring tone different from the usual one can be sounded, and the called party can hear the ring tone and call the extension before answering. Callers can be identified.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an electronic exchange according to the present invention. 3.4...Subscriber line circuit 5...Call path switch 6...Call signal generator 7...Central control unit 8...Main storage device agent Patent attorney Yoshiyuki Iwasa

Claims (1)

[Claims] (1) A ringing signal generator that outputs a specific ringing signal, a storage device that stores the number of a second extension for the first extension, and a call made from the extension and received by the first extension. and a control means for causing the calling signal generating device to output the specific calling signal to the first extension telephone when the number of the calling party's extension telephone matches the number stored in the storage device. An electronic switching machine characterized by the following: