JPH03250997A - Incoming call restriction system in electronic exchange - Google Patents

Abstract

PURPOSE:To prevent a fact that an incoming call from an important extension is disturbed in advance by providing a function restricting an incoming call from extensions other than a set extension tentatively within a set time according to dial information from the extensions to a stored program control automatic exchange. CONSTITUTION:In the incoming call restriction registration from an extension telephone set 1, when the extension telephone set 1 is hooked off, a central control circuit 11 controls a channel switch 6 to connect the extension telephone set 1 and a dial identification circuit 8. Succeedingly, the extension telephone set 1 dials an incoming call restriction registration special number, a restriction time and extension numbers 2, 3 accepting the incoming call to the extension telephone set 1. The central control circuit 11 detects the dial information from the dial identification circuit 8 to store the extension number of the extension telephone set 1 to a storage circuit 10 as the presence of the incoming restriction and to store the restriction time and the extension numbers 2, 3 to the storage circuit 10. Then the extension telephone set 1 restricts the incoming call from extensions other than the extension telephone sets 2,3. The central control circuit 11 monitors the lapse time after registration via a clock circuit 9 and erases the storage of the storage circuit 10 when the lapse time is matched for the restriction time to release the incoming call restriction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a call termination system in an electronic exchange, and particularly to a call restriction system.

[Conventional technology]

Conventional call receiving methods allow calls to be received from all extensions or from a specific extension.

[Problem to be solved by the invention]

The above-described conventional call reception method has the drawback that calls can be received from all extensions or from a specific extension, and there is no means for regulating incoming calls on the receiving side.

An object of the present invention is to provide an incoming call restriction system for an electronic exchange that solves the above-mentioned problems.

Means for Solving the Problem] In order to achieve the above object, the incoming call restriction system according to the present invention includes a circuit for identifying dial information from a calling extension, which is an incoming call system in a storage program controlled automatic exchange. , a circuit for storing 'If information dialed from an extension, a clock circuit for timekeeping, and a control circuit, and the control circuit is configured to: It has a function to temporarily restrict incoming calls from other than the set extension within a set time based on dial information from the extension.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

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

In FIG. 1, 1 to 4 are telephone extensions, 5 is an exchange, 6 is a call path switch, 7 is a tone output path, 8 is a dial identification circuit, 9 is a clock circuit, 10 is a memory circuit, and 11 is a central control circuit. are shown respectively.

The incoming call restriction registration operation from the extension telephone 1 will be explained with reference to FIG.

When the extension telephone 1 is taken off-hook, the central control circuit 11 controls the call path switch 6 to connect the extension telephone 1 to the dial identification port FI&8. Next, from Internal IT Talk 1, enter the "Call Restriction Registration Special Number", "Restriction Time" (for example, dial 2 digits in minutes for the time you want to restrict incoming calls) and "Extension Telephone 2".
Then, dial the extension number of extension telephone 3'' (the extension number you want to be able to receive calls to extension telephone 1) and the ``registration end special number''.

Central control episode F! @11 detects this dial information from the dial identification circuit 8 and recognizes that it is in the incoming call restriction registration mode. Further, the extension number of extension telephone 1 is stored in the storage circuit 10 as having incoming call restriction, and the "restriction time" and "extension numbers of extension telephone 2 and extension telephone 3" are also stored in the storage circuit 10 at the same time, and after the registration is completed, A registration completion tone is sent from the tone output path 7 to the extension telephone 1 via the communication path switch 6.

Thereafter, within the restricted time range, extension telephone 1 is restricted from receiving calls from extensions other than extension telephone 2 and extension telephone 3.

Next, a description will be given of the operation when the 11A telephone 1, which has been registered for incoming call restriction, receives a call from the extension telephone 2 registered as an extension number to which it is desired to receive calls.

When the extension telephone 2 is taken off-hook, the central control circuit 11 controls the call path switch 6 to connect the extension telephone 2 to the dial identification port #18. Next, the user dials the extension number of extension telephone 1 from internal telephone 2. The central control circuit 11 detects this dial information from the dial identification circuit 8, and in order to know whether or not the extension number of the extension telephone 1 is registered for incoming call restriction, the central control circuit 11 sends a memory circuit 10 indicating whether or not the extension number of the extension telephone 1 is registered for incoming call restriction. , and confirm after registering the incoming call restriction. When the central control circuit 11 confirms that the extension telephone 1 is registered for incoming call restriction, the central control circuit 11 writes information to the memory port FjI 110 in order to know whether the extension number of the extension telephone 2 is registered as an extension number that can receive calls to the extension telephone 1. remembered “
Read the extension number that you want to be able to receive calls to extension phone 1, and find out that the extension numbers that can receive calls to extension phone 1 are the extension numbers of extension phone 2 and extension phone 3. Extension phone 2 receives calls to extension phone 1. When confirming that the extension is a valid extension, the central control circuit 11 sends a ring tone to the extension telephone 2 and a ringing signal to the extension telephone 1, and controls the call path switch 6 according to the response of the extension telephone 2 to switch between the extension telephone 2 and the extension. The telephone 1 is connected to enable a telephone call.Furthermore, when the above-described operation is performed from the extension telephone 3, a telephone call between the extension telephone 3 and the extension telephone 1 is enabled.

However, when the above operation is performed from extension telephone 4, the extension number of extension telephone 4 is registered as an extension number that can receive calls to extension telephone 1. When the central control circuit 11 learns that there is no tone, the central control circuit 11 controls the call path switch 6, connects the extension telephone 4 and the tone sending circuit 8@7, and sends a restriction tone to the extension telephone 4. Restrict incoming calls.

After registering the incoming call restriction, the central city telephone F#r11 monitors the elapsed time after registration via the clock circuit 9, and if the elapsed time matches the "restriction time" stored in the storage circuit 10, , erases the memory of whether or not incoming calls are restricted and the extension number and restriction time for which incoming calls are to be allowed, which are stored in the memory circuit 10;
The incoming call restriction is lifted and normal control is performed, and from then on it is possible to receive calls through normal operation.

〔Effect of the invention〕

As explained above, the present invention can temporarily restrict incoming calls from other extensions within a set time using dialing information from an extension, so you can wait for an important call from a specific extension. By restricting incoming calls from extensions other than that one when you are at home, you can prevent incoming calls from important extensions from being blocked when incoming calls from other extensions are concentrated at a time. This has the effect of preventing it from occurring.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of the present invention.

Claims (1)

[Claims] (1) A call receiving system in a storage program controlled automatic exchange, which includes a circuit that identifies dialing information from the calling extension, a circuit that stores information dialed from the extension, a clock circuit that measures time, and a control circuit. The control circuit has a function of temporarily restricting incoming calls from other than the set extension within a set time based on the data of the identification circuit, the memory circuit, and the clock circuit, based on dial information from the extension. An incoming call restriction method in an electronic exchange, characterized by having the following.