JPH05122340A - Interruption control system utilizing id code - Google Patents

Abstract

PURPOSE:To permit interruption from a specific opposite party by comparing and collating an ID code dialed additionally by a public telephone set subscriber stored in a temporary storage means with an interruption permission ID code registered by an extension subscriber and interrupting an incoming call from the public telephone set subscriber to the extension subscriber only when the collation indicates the coincidence. CONSTITUTION:When interruption of part of incoming calls is desired during talking, an extension subscriber 1 registers a relevant ID code to an interruption enable number storage circuit 8. When interruption is desired, the ID code is dialed. A central processing unit 6 detects the ID code and stores the code tentatively to an ID code storage circuit 7 and gives a command to a collation circuit 8 to collate whether or not the received ID code is registered in an interruption enable number storage circuit 9. When the received ID code is registered as the result of collation, an interrupt tone is sent to the extension subscriber 1 from a tone transmission circuit 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interrupt control system for an extension subscriber in an electronic automatic switching system.

[0002]

2. Description of the Related Art Heretofore, this type of interrupt control system has been impossible for a call from a public line to be in a busy state.

[0003]

Since the above-mentioned conventional interrupt control system cannot enter into a busy state for an incoming call from a public line, it is possible to perform interrupt control even for a party who wants to make a call urgently. There are no drawbacks.

An object of the present invention is to provide an interrupt control system using an ID code which allows interruption only from an incoming call from a particular party registered in advance when an incoming call is received from a public network during a call on an extension line. is there.

[0005]

According to the interrupt control system using ID code of the present invention, in the interrupt control system in the electronic automatic switching apparatus, the ID code for permitting the interrupt is extended by the predetermined registration operation of the extension subscriber. Means for individually storing, means for temporarily storing the ID code additionally dialed by the public network subscriber when the called extension is busy, and public network subscribers stored in the temporary storage means additionally dialed The extension subscriber has means for comparing and collating the ID code with the interruption permission ID code registered by the extension subscriber, and an incoming call from the public subscriber is interrupted to the extension subscriber only when the collation results match.

[0006]

The present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. An interrupt permission number storage circuit 9 for registering an ID code for permitting interruption of only an incoming call from a particular public network subscriber, An ID code storage circuit 7 for temporarily storing an ID code additionally dialed by the public network subscriber 5;
A matching circuit 8 for matching the ID code dialed by the public network subscriber 5 stored in the D code storage circuit 7 with the ID code registered in advance in the interrupt permission number storage circuit 9 is provided.

When the extension subscriber 1 wants to permit interruption of only some incoming calls during a call, the extension subscriber 1 registers the corresponding ID code in the interruption permission number storage circuit 9 in advance. For this interrupt setting, the extension subscriber 1 raises the handset and confirms the dial tone, and then dials the special number and its ID code for interrupt setting. The central processing unit 6 stores the ID code in the interrupt permission number storage circuit 9 and also stores that the extension subscriber 1 has set the interrupt control.

After that, when the extension subscriber 1 receives a call from the public network subscriber 5 to the extension subscriber 1 while talking to the extension subscriber 2, the central processing unit 6 detects this and the tone sending circuit 3 detects it. A busy tone indicating that the extension subscriber 1 is busy is sent to the public network subscriber 5 through the call path switch 4. The public network subscriber 5 dials the ID code here if he / she wants to interrupt. The central processing unit 6 detects this ID code, temporarily stores it in the ID code storage circuit 7, and then instructs the collation circuit 8 to collate whether the received ID code is registered in the interrupt permission number storage circuit 9 or not. Let

If the received ID code is registered as a result of the collation, the tone sending circuit 3 sends an interrupt sound to the extension subscriber 1. After transmitting the interruption sound, the extension subscriber 1 and the public network subscriber 5 are connected through the communication path switch 4.

If the received ID code is not registered, the busy tone is sent from the tone sending circuit 3 to the speech path switch 4
Through the public network subscriber 5. When the extension subscriber performs the registration cancellation operation, the interrupt control is automatically canceled.

[0012]

As described above, according to the present invention, an ID code that permits interruption of an incoming call from a public network subscriber to an extension during a call is registered in advance, and the called party is busy on the public network. ID for additional dialing when subscriber wishes to interrupt
Since the code is checked and the interrupt is permitted when the code matches, only an incoming call from a specific public network subscriber can be interrupted.

[Brief description of drawings]

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

[Explanation of symbols]

 1, 2 extension subscribers 3 tone transmission circuit 4 speech path switch 5 public network subscriber 6 central processing unit 7 ID code storage circuit 8 collation circuit 9 interrupt enable number storage circuit

Claims (1)

[Claims] 1. An interrupt control system in an electronic automatic switching system, wherein an extension subscriber performs a predetermined registration operation,
A means for storing an ID code for permitting interruption corresponding to each extension, a means for temporarily storing an ID code additionally dialed by a public network subscriber when the called extension is busy, and a means for temporarily storing the ID code A means for comparing and collating the ID code additionally dialed by the public network subscriber with the interruption permission ID code registered by the extension subscriber, and an incoming call from the public subscriber is received only when the collation results match. An interrupt control method using an ID code, which interrupts the subscriber.