JPS61182356A - Incoming limit system of exchange - Google Patents

Abstract

PURPOSE:To prevent intermission of business by a phone call from an undesired opposite party by allowing a subscriber to limit the number of sender telephone sets by which the subscriber itself is called. CONSTITUTION:When a subscriber of an extension 21 dials an extension number 3313 to call an extension 20, a controller 40 checks an incoming limit service setting storage circuit 50 and confirms that the telephone set having the extension number 3313 registers the incoming limit, the controller 40 checks whether or not the telephone number 3333 of the sender telephone set 21 is registered as a sender extension number permitted by the incoming limit setting extension number 3313 for calling by controlling an incoming limit information storage circuit 60. If it is confirmed that the number is not registered, the extension 20 cannot be reached and a restricting tone is sent to the extension 21.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an incoming call restriction method for an exchange.

(Prior art) Conventionally, incoming calls to extension telephones housed in a switchboard were made by the subscriber dialing a special number for incoming call rejection to add incoming call rejection to his or her own telephone. There was a method of refusing calls.

(Problem to be solved by the invention) Therefore, even if you want to answer only connection calls from a specific subscriber, there is no way to receive and answer only the specific connection calls, so you can receive calls from parties you do not want to talk to. I also had to answer calls.

For this reason, there is a problem in that business is interrupted due to a wrong call or a call from a person you do not want to call.

An object of the present invention is to allow a subscriber to manually set the telephone number of the originating telephone for an extension interconnection call that allows calls to the subscriber's own telephone, and to call from a telephone other than the telephone corresponding to the set telephone number. To solve the above-mentioned problems by making it possible to reject calls from extension interconnection calls, and to provide an incoming call restriction system for an exchange that prevents incoming calls from anyone other than the party the subscriber wants to talk to at a certain point in time. It is in.

(Structure of the Invention) According to the present invention, an incoming call restriction service setting storage circuit that stores whether or not a subscriber telephone sets incoming call restriction in an exchange, and a call restriction service setting storage circuit for storing incoming calls to the subscriber telephone, and a telephone of the calling party subscriber telephone that permits incoming calls to the subscriber telephone. Equipped with an incoming call restriction information storage circuit that stores a number corresponding to the telephone number of the subscriber telephone on the receiving side, and sets the telephone number of the subscriber telephone on the originating side for an extension interconnection call that allows the subscriber to make an incoming call to his own telephone. As a result, an incoming call restriction system for an exchange is obtained, which is characterized in that incoming extension interconnection calls from phones other than those corresponding to the set telephone number are rejected.

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

FIG. 1 is a block diagram of main parts of an embodiment of the present invention.

Extension telephones 20, 21 and 22 and a counting register circuit 30 are connected to the call path switch 10.

Extension phones 20, 21, and 22 each have phone number 33.
13.3333.3568 is assigned.

The incoming call restriction service setting storage circuit 50 stores which extension has registered incoming call restriction. The incoming call restriction information storage circuit 60 stores information from which extensions for which incoming call restrictions have been registered and from which calls are permitted. The control device 40 includes all the circuits mentioned above.

Controls call path switches and extension telephones.

FIG. 2 is a block diagram of an example of the incoming call restriction service setting storage circuit 50, in which the telephone numbers of extension telephones for which incoming call restrictions are registered are stored.

FIG. 3 is a configuration diagram of an example of the incoming call restriction information storage circuit 60.
The telephone number of the extension telephone for which incoming call restriction is registered and the telephone number of the calling party telephone to which the extension is permitted to make calls are stored in pairs.

When the subscriber of the extension telephone 20 wishes to permit calls only from the extension telephone 22, he dials the incoming call restriction registration number and the telephone number "3568" of the extension telephone 22 in succession. The control device 40 receives this dial information via the counting register circuit 30, registers the telephone number 3313 of the extension telephone 20 in the incoming call restriction service setting storage circuit 50, and registers the incoming call restriction setting extension in the incoming call restriction information storage circuit 60. The number 3313 and the calling party's extension number 3568 are registered as a pair.

Thereafter, when the subscriber of the extension telephone 21 dials the extension number 3313 in an attempt to call the extension telephone 20, the control device 40 checks the incoming call restriction service setting storage circuit 50 and determines whether the telephone with the extension number 3313 has registered the incoming call restriction. After confirming that there is a caller, the phone number 33 of the calling party's phone 21 is displayed.
33 controls the incoming call restriction information storage circuit 60 to check whether the telephone with the incoming call restriction setting extension number 3313 is registered as a caller's extension number to which calls are permitted. If it is confirmed that it is not registered, the first extension telephone 20 is not called, and a restriction tone is sent to the extension telephone 21.

When the extension telephone 22 corresponding to the telephone number 3568 dials the extension number 3313t in an attempt to call the extension telephone 20, the telephone number 3568 is the originating extension that the telephone with the extension number 3313 set for incoming calls is permitted to call. Since the number is registered in the incoming call restriction information storage circuit 60, the control device 40 actually calls the extension telephone 20t.

The extension telephone 20 can further register a plurality of extensions as extensions for which calls are permitted by successively dialing the incoming call restriction registration number and another extension telephone number.

To cancel the incoming call restriction setting, the user may dial the incoming call restriction setting release number from the extension telephone 20.

When the control device 40 receives this number, it changes the extension number 3313 that was set in the 1-call restriction service setting storage circuit 50.
At the same time, the item that sets the extension number 3313 set in the incoming call restriction information storage circuit 60 as the incoming call restriction setting extension number is deleted.

(Effects of the Invention) As explained above, the present invention enables a subscriber to limit the number of caller telephones that can call his or her own telephone, thereby preventing calls from parties he or she does not want to call. This has the effect of preventing work from being interrupted by telephone calls.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram of the main part of an embodiment of the present invention, FIG. 2 is a configuration diagram of an example of the incoming call restriction service setting storage circuit in FIG. 1, and FIG. 3 is a block diagram of the incoming call restriction service setting memory circuit in FIG. FIG. 2 is a configuration diagram of an example of an information storage circuit. 10...Call path switch, 20, 21.22.
. . . extension telephone, 30 . . . counting register circuit, 40 . . . control device, 50 . . . incoming call restriction service setting storage circuit, 60 . Incoming call restriction information storage circuit. Agent Patent Attorney Susumu Uchihara' -m-I゛茅11 Australia 2 @ Juzusai

Claims (1)

[Claims] An incoming call restriction service setting memory circuit that stores whether or not a subscriber telephone has set incoming call restriction in the exchange, and a call restriction service setting storage circuit that stores the telephone number of the calling party's subscriber telephone that permits incoming calls to the subscriber telephone, and the telephone number of the called party's subscriber telephone that allows incoming calls to the subscriber telephone. Equipped with an incoming call restriction information storage circuit that stores information corresponding to the number, allowing the subscriber to make incoming calls to his or her own telephone.Set the telephone number of the subscriber's telephone on the originating side of an extension interconnection call, and correspond to the set telephone number. An incoming call restriction method for an exchange is characterized in that incoming calls for extension interconnection calls are rejected from telephones other than telephones that are connected to the telephone.