JPS6037671B2 - conference call method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conference telephone system in which any subscriber acts as a convenor in an automatic exchange, seizes a conference device, and calls a plurality of other subscribers for conversation.

In the conventional conference telephone system, once the convening subscriber recovers from the conference device, there is no way to reconnect, so if the subscriber recovers from the conference device by mistake, he or she will not be able to participate in the conference again. Particularly when only the convenor is given the right to call other subscribers, there is a drawback that the conference must be convened all over again. SUMMARY OF THE INVENTION An object of the present invention is to provide a conference telephone system in which even if a subscriber who is a convenor recovers from a conference device, he can reconnect to the conference device by performing a predetermined operation. In order to achieve this purpose, the present invention provides a means for storing information of a subscriber who is a convener of a conference, and a means for storing information of a subscriber who is a convener of a conference, If the subscriber who is the convener is able to connect to the conference device, even after the subscriber who is the convener has recovered from the conference device, he or she can connect the conference device again by performing a predetermined operation. It can be connected to

In this way, even if the conference device is accidentally restored during the operation of calling another subscriber, the operation can be returned to the original state and the operation can be continued, and the conference connection service can be promoted. Embodiments of the present invention will be described below with reference to the drawings.

The figure is a relay system diagram of an embodiment of an automatic exchange using a storage program control system.

In the figure, S, ~S4 are subscriber telephones, SWF is a switch frame, ORT is an originating register trunk, and CFT
is a conference trunk, SPC is a communication path control device, CC is a central control device, MM is a main memory device, and TM is a temporary memory device. The central controller CC reads the program stored in the main memory MM and processes it to control the communication path controller SPC and serves as a temporary storage device for storing convener information corresponding to the conference trunk CFT. Reads and writes TM. The communication path control device SPC connects or disconnects various trunks and subscriber telephones connected to the switch frame SWF by controlling the switch frame SWF. The calling register trunk ORT is connected to the subscriber telephone via the switch frame SWF, and sends out a dial tone and receives dial pulses. First, a conference convenor S, connects to the conference trunk CFT via link 2 by dialing a conference number after a tone connection.

The subscriber information of the conference convener S, is stored in the temporary storage device TM. Next, the meeting convener S, uses a known method to
The subscriber numbers are dialed in sequence and subscribers S2-S4 are connected to the conference trunk CFT via links 3-5. On the other hand, when the conference convenor performs an erroneous operation and restores the conference device CFT, link 2 is restored and only links 3 to 5 remain connected. Here, the conference convenor S picks up the receiver again, establishes a dial tone connection, and then performs a predetermined operation (for example, dialing a special number), the central controller CC stores the conference convener S in the temporary storage device TM. ．． It is checked whether the subscriber information of is stored, and the conference device CFT is reconnected via the stored link 2.

Note that if multiple conference devices CFT are installed, conference subscriber S. By temporarily storing which conference device is connected to the conference device that was used,
Needless to say, FT can be specified. As explained above, the present invention provides a means for storing the subscriber information of the conference convener, so that even if the conference device is recovered due to an erroneous operation, the conference device can be restored by performing a predetermined operation. connection, and promotes conference connection services.

[Brief explanation of drawings]

The figure is a relay system diagram of an embodiment of an automatic exchange using a storage program control system. S, ~S4...Subscriber telephone, SWF...Switch frame, CFT...Conference trunk, ORT...Calling register trunk, SP〇...Call path control device, CC
...Central control unit, MM...Main memory, TM...Temporary memory.

Claims (1)

[Claims] 1. At least one conference device connected to the convenor and the convened party via a switch frame in a conference telephone system in which any subscriber becomes the convenor and dials other subscribers as the convened party using an automatic telephone exchange. and a storage device that stores subscriber information of conveners connected to this conference device for each conference device, and when a subscriber corresponding to the subscriber information stored in this storage device performs a predetermined operation. means for connecting this subscriber to the conference device via a switch frame, and after the connection between the subscriber who is the convenor and the conference device is released, the subscriber performs a predetermined operation. A conference telephone system characterized in that the subscriber is reconnected to the conference device via a switch frame.