JPS5864860A - Automatic exchange - Google Patents

Abstract

PURPOSE:To make the conference call efficient, by registering each callout dial number of the participants for a conference call, and making connectable all the participants arbitrarily. CONSTITUTION:In receiving conference call information from a subscriber 1, a control circuit 4 checks the state of a channel trunk 3, registrates a dial number of a conference participating subscriber from the subscriber 1 in a memory 5, the registrated subscriber is automatically called out and a channel loop between the subscriber and the subscribers under registration is formed via a switch 6. Further, if no response is received from a called subscriber, the dial number registration of the subscribers without response is erased from the memory 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic switchboard, and aims to simplify the operation of a conference call organizer and shorten the operation time.

Conventionally, when making a conference call using an automatic switchboard that has a conference call function, the caller who is hosting the conference call dials the calling number to the participants, confirms the response from the participant, and then informs the caller of the conference call. The method used was to call all participants by notifying the subscriber, temporarily putting the subscriber's telephone line on hold, and calling the participants in turn. However, this method requires an hour of labor for the conference call organizer, and is extremely inconvenient because the conference call participants are forced to wait for a long time.

The present invention eliminates such drawbacks, and allows the conference call organizer to register, at the beginning of the conference call, the dialing numbers of each person who wants to participate in the conference call on the organizer's telephone, so that the conference call participants can join in the order of registration. The participants will be automatically dialed one after another and the number of participants will increase one after another, but if the participants do not respond to the call for a long time, the conference call host can cancel their participation by dialing. We are making it possible to do so.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a portion related to a conference call of an automatic exchange according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing the contents stored in a part of the memory of the automatic exchange.

In the figure, 1 is a telephone set for the host and participants of a conference call, 2 is a subscriber circuit that detects incoming and outgoing calls from telephone 1, supplies current, sends out tones, etc., and 3 is a telephone set for communication with multiple telephone subscribers. 4 is a central control unit that controls all operations of the exchange, such as conference calls, based on information from the subscriber circuit 2;

Reference numeral 6 denotes a part of memory for storing write and read data necessary for control of the central control unit 4, and reference numeral 6 denotes a telephone network for connecting telephone calls under instructions from the central control unit 4.

The operation of making a conference call using this automatic exchange will be described below.

When a telephone subscriber wants to make a conference call, he or she takes the telephone 1 off-hook and first dials a number for the conference call. This information is transmitted to the central control unit 4 via the subscriber circuit 2 connected to the telephone 1.

The central control unit 4 checks the status of the conference call trunk 3, and if it is available, a tone is sent from the subscriber circuit 2 to the telephone 1 indicating that it is available. In this state, dial the calling numbers of all the members who want to participate in the conference call from the telephone 1. Each dialed number is notified from the subscriber circuit 2 to the central control unit 4, and stored in the memory unit 5 as shown in FIG. Ru.

When all the dialed numbers are registered in the memory section 6, an incomplete tone is sent from the subscriber circuit 2 to the telephone 1 that hosted the conference call in response to an instruction from the central control section 4.

Next, the subscriber numbers registered as shown in FIG. be done. In this way, the subscriber numbers are sequentially read out from the memory part 6, and a ring tone is sent to the corresponding telephone set 1.

When the called participant goes off-hook from the telephone 1 in this state, the subscriber circuit 2 notifies the central control section 4 of the call. The central control unit 4 registers information to the effect that there is a response in the memory part 5, and also gives an instruction to the telephone network 6 to connect the subscriber circuit 2 of the telephone 1 and the conference call trunk 3, thereby establishing the connection.

Now you can make a call between the conference call host and the participants. In this way, the registered subscribers participate in the conference call one after another, and their participation is registered in the memory part 5. However, if there is no response from a participant whose subscriber number is registered as shown in Figure 2, "None" is registered in the response field, and an incomplete tone is sent to the conference call organizer. Ru.

If all registrants respond, the central control unit 4 notifies the subscriber circuit 2 of the conference call organizer to stop sending out incomplete tones. Similarly, when canceling participation, the conference organizer dials a cancellation number, and based on this information, the central control unit 4 cancels the subscriber's number shown in FIG. By sending an instruction to the subscriber circuit 2 to stop the sending of the tone and the sending of the incomplete tone, the conference call becomes a conference call for only the responding participants.

As described above, according to the present invention, if the conference call organizer performs the operation first, all participants will be automatically called afterward, and the participants who have responded will be able to start the call from the time of answering. Since the conference call can be continued without interruption, there is no hold period for participants, and the status of responses is always known, allowing for efficient conference calls.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an automatic Z-switching machine according to an embodiment of the present invention, and FIG. 2 is a diagram showing the contents of the same memory. 1...Telephone, 2...Subscriber circuit, 3
... Conference call trunk, 4 ... Central control unit, 6 ... Part of memory, 6 ... Call network.

Claims (1)

[Claims] When conference call information is received from a subscriber, the status of the call trunk is checked, the dialed number of the subscriber participating in the conference from the subscriber is registered in memory, and the registered subscriber is automatically transferred. calling, forming a call loop between the telephone set and the registered subscriber's telephone set, and deleting the dialed number registration of the unanswered subscriber from memory if there is no response from the called subscriber; An automatic exchange machine characterized by: