JPH05219210A - Transfer system at call waiting service - Google Patents

Abstract

PURPOSE:To allow the system to reject interruption at an important talking and to reply the said arrival call with other extension in deputy. CONSTITUTION:When telephone sets 4, 6 are busy, a telephone set 2 makes dialing to an extension number of the telephone set 4. A central controller 10 recognizes the state of the telephone set 4 from a storage device 11 to validate the call waiting service and the busy state with the telephone set 6 and the transmission of a call waiting tone is instructed to a line circuit 5. The telephone set 4 receives a call waiting tone and reply is desired by other extension, a special number is dialed while receiving the call waiting tone. The central controller 10 reads a transfer destination extension number at the preset call waiting and selects the connection destination of the telephone set 2 to a telephone set 8 being a transfer destination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to extension interconnection in an automatic private branch exchange, and more particularly to a transfer system for a call waiting service.

[0002]

2. Description of the Related Art Conventional call waiting services are
It was always valid regardless of the will of the called extension being busy.

[0003]

When the call waiting service is set in the conventional extension interconnection, the called extension subscriber who is busy cannot be rejected even when he / she does not want to be interrupted and is interrupted. There is a drawback that it will end up.

An object of the present invention is to provide a transfer method at the time of call waiting service in which an extension subscriber set with call waiting can reject an interruption request when busy and transfer the incoming call to another extension subscriber. Especially.

[0005]

The transfer method during call waiting service of the present invention is a call waiting service for a busy extension when a called extension subscriber is busy in a private branch exchange having a call waiting service. The busy called subscriber who received this call waiting tone rejects the interruption while the tone is being sent,
It has means for counting a special dial for instructing transfer of the incoming call to another extension subscriber, and means for searching a preset transfer destination according to the counting result and transferring the incoming call to the transfer destination.

[0006]

The present invention will be described below with reference to the drawings. FIG. 1 is a relay system diagram showing an embodiment of the present invention.
The switch 1 accommodates the telephones 2, 4, 6 and 8 via line circuits 3, 5, 7 and 9, respectively, and includes a central control unit 10 and a storage unit 11.

Telephone 4 and telephone 6 are busy and telephone 2 dials the extension number of telephone 4. The central control unit 10 reads from the storage unit 11 that the call waiting service is available for the extension of the telephone set 4, and recognizes that the extension of the telephone set 6 is currently in progress. Is transmitted, and the call waiting sound is transmitted from the line circuit 5.

When the telephone 4 receives the call waiting tone but wants another extension to substitute the answer, the telephone 4 dials a special number while receiving the call waiting tone. The line circuit 5 receives the special number and the central controller 1
Transmit to 0. The central control device 10 reads out a preset transfer destination extension number at the time of call waiting from the storage device 11, stops the call waiting sound transmission of the line circuit 5, and sets the connection destination of the telephone 2 to the telephone 8 as the transfer destination. The line circuit 9 is switched to cause the telephone 8 to ring.

[0009]

As described above, according to the present invention, in the extension interconnection, when the called extension subscriber to which the call waiting service is set is busy and operates the special dial while receiving the call waiting tone, Incoming calls from calling extension subscribers can be forwarded to other extension subscribers. This has the effect of rejecting the interrupt when the called extension subscriber does not want to be interrupted and having another extension subscriber take over the response.

[Brief description of drawings]

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

[Explanation of symbols]

 1 Switch 2, 4, 6, 8 Telephone 3, 5, 7, 9 Line Circuit 10 Central Control Unit 11 Storage Device

Claims (1)

[Claims] 1. A private branch exchange having a call waiting service, when a called extension subscriber is busy.
While the call waiting tone is being sent to the busy called extension, the busy called extension subscriber who receives this call waiting sound rejects the interruption and instructs the extension call to transfer the incoming call to another extension subscriber. A transfer method at the time of a call waiting service, which has a unit for counting a special dial and a unit for searching a preset transfer destination according to the counting result and transferring the incoming call to the transfer destination.