JPH05244282A - Incoming call notice system - Google Patents

Abstract

PURPOSE:To inform it to a caller when a called extension subscriber is busy or does give a reply with respect to an incoming call and to inform the incoming call to the called extension subscriber automatically. CONSTITUTION:When an incoming call comes to an extension subscriber 1a, a central processing unit 9 stores a caller number to a caller number storage circuit 10 and whether the extension subscriber 1a is idle or busy is checked by an extension subscriber detection circuit 7, and when idle, calling is made and whether or not the called party replies within a prescribed time is detected by an extension subscriber non-reply detection timer 8. When the extension subscriber 1a is busy or gives no reply, the central processing unit 9 closes a switch between an announcement trunk 5 and an office line trunk 4 or a subscriber circuit 2b to send an announcement representing the busy or non-reply extension subscriber 1a and inform of the presence of an incoming call to the extension subscriber 1a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incoming call notification system for extension subscribers in an automatic private branch exchange.

[0002]

2. Description of the Related Art Conventionally, this type of incoming call notification to an extension subscriber has been performed by the calling extension subscriber performing an incoming call notification operation when the called extension subscriber is busy or does not answer. It was a method to notify that there was an incoming call to.

[0003]

SUMMARY OF THE INVENTION This conventional incoming call notification system is used to notify a called extension subscriber of an incoming call when the called extension subscriber is busy or does not answer. There is a drawback that the call extension operation must be performed while the call extension subscriber is listening to the busy tone or ring tone.

It is an object of the present invention to send an announcement to the caller not only for extension subscribers but also for incoming calls from outside lines when the called extension subscriber is busy or does not answer. The present invention also provides an incoming call notification system that automatically notifies the called extension subscriber of an incoming call without the caller performing an incoming call notification operation.

[0005]

According to the incoming call notification system of the present invention, when an extension subscriber receives an incoming call from an outside line or another extension subscriber, the calling party number is stored. Means, a called party busy detecting means for detecting whether the called extension subscriber is idle or busy at the time of receiving the call, and whether or not the called extension subscriber responds within a predetermined time when the called extension subscriber is idle. Called party response detecting means for detecting whether or not, the announcement sending means for notifying the calling party of the fact when the called extension subscriber is busy or has not responded for a certain period of time, and the incoming call is received by the called extension subscriber. An incoming call notification means for notifying that there is an incoming call.

Then, calling party number searching means for searching the called party number of the incoming call in response to a request from the called extension subscriber who has received the notification of the incoming call, and calling means for calling to this calling party number. , Erasing means for erasing the calling party number from the calling party number storage means.

[0007]

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of an incoming call notification system of the present invention.

When there is an incoming call from the ISDN network 6 or the extension subscriber 12 to the extension subscriber 1a, the central processing unit 9 detects this and the caller number or extension subscriber 1b notified from the ISDN network 6 is received. The calling party number is temporarily stored in the calling party number storage circuit 10. Next, the central processing unit 9 detects whether the extension subscriber 1a is idle or busy by the extension subscriber busy detection circuit 7.

When the extension subscriber 1a is idle, the central processing unit 9 makes a call and the extension subscriber non-response detection timer 8 detects whether or not the extension subscriber 1a responds within a fixed time. When the extension subscriber 1a responds within a certain time, the switch 3 between the subscriber circuit 2a and the office line trunk 4 or the subscriber circuit 2b is closed to establish a call state, and the call stored previously is stored. Erase the person number and finish the process.

When the extension subscriber 1a is busy or does not respond for a certain period of time, the central processing unit 9 notifies the extension subscriber 1a of an incoming call via the subscriber circuit 2a, and The switch 3 between the announcement trunk 5 and the office line trunk 4 or the subscriber circuit 2b is closed, and the announcement trunk 5 sends an announcement to the calling party that the extension subscriber 1a is busy or does not respond for a certain period of time. After that, the switch 3 is opened.

Next, the extension subscriber 1a which has received the incoming call notification from the central processing unit 9 displays on the display or the like that there is an incoming call, and a search for knowing from whom the extension subscriber 1a has arrived. When the request operation is performed, the central processing unit 9 detects this request via the extension subscriber circuit 2a, and the caller number previously stored in the caller number storage circuit 10 is used by the extension subscriber 1a.
To notify. This is displayed on the display of the extension subscriber 1a, and when the extension subscriber 1a sees this display and makes a call to the calling party number, a request for calling is made and the displayed calling party number is erased. In this case, the erase request operation is performed. These requests are detected by the central processing unit 9 via the extension subscriber circuit 2a, and if a call origination request is made, a call origination connection process to the displayed calling party number is performed. The calling party number stored in the calling party number and calling party number storage circuit 10 is deleted.

[0012]

As described above, according to the present invention, when the called extension subscriber is busy or does not answer, a complicated incoming call notification operation can be performed regardless of whether the calling party is an extension subscriber or an outside line. The call record can be transmitted to the called extension subscriber automatically and automatically, and it is possible to clearly inform the calling party that the called extension subscriber is busy or unanswered by sending an announcement. It has the effect that

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an incoming call notification system of the present invention.

[Explanation of symbols]

 1a, 1b Extension subscriber 2a, 2b Subscriber circuit 3 Switch 4 Station trunk 5 Announce trunk 6 ISDN network 7 Extension subscriber busy detection circuit 8 Extension subscriber unresponsiveness detection timer 9 Central processing unit 10 Caller number storage circuit

Claims (2)

[Claims] 1. A calling party number storing means for storing a calling party number of the incoming call when the extension subscriber receives an incoming call from an outside line or another extension subscriber, and a called extension subscriber when the incoming call is received. A called party busy detecting means for detecting an idle state or a busy state, and a called party response detecting means for detecting whether or not the called extension subscriber responds within a predetermined time when the called extension subscriber is idle, An announcement sending means for notifying the calling extension subscriber when the called extension subscriber is busy or has not responded for a certain period of time, and an incoming call notification means for notifying the called extension subscriber that the incoming call has been received. An incoming call notification system characterized by being provided. 2. Calling party number searching means for searching the calling party number of the incoming call in response to a request from the called extension subscriber who has received the incoming call notification, and calling means for calling to this calling party number. 2. The incoming call notification system according to claim 1, further comprising: erasing means for erasing the calling party number from the calling party number storage means.