KR20000073079A - A conference call card and method for expanding a conference call group - Google Patents

Abstract

PURPOSE: A method for supplying conference speech cards is provided to transform conference speech ASIC chips fixed on control cards into card types in a private branch exchange(PBX) and to package the transformed conference speech cards on slots formed in subscriber modules, so as to extend conference speech groups. CONSTITUTION: Each of conference speech cards(200A,200B) has a time switch ASIC(TSW)(210) and a conference speech ASIC(220). The TSW(210) switches 30-channel pulse code modulation(PCM) highway input terminals(PCM_IN_O) to an input terminal of the conference speech ASIC(220). The conference speech ASIC(220) synthesizes voice channels of other persons and outputs the synthesized voice channels. The TSW(210) switches an output terminal of the conference speech ASIC(220) to output PCM highway output terminals(PCM_OUT_O). If one conference speech group is composed of more than three persons and less than 30 persons and if the group is for a three-person call, maximumly 10 conference speech groups are formed on one conference speech card(200A).

Description

A CONFERENCE CALL CARD AND METHOD FOR EXPANDING A CONFERENCE CALL GROUP}

The present invention relates to a conference call of a private exchange system, and more particularly to a conference call card and method for expanding a group that can participate in a conference call.

In general, the exchange system is based on the call function between the CO subscriber and the subscriber, the call between the CO subscriber and the subscriber, and the call between the subscriber and the subscriber. In addition to these basic functions, the exchange system provides various functions that allow subscribers to feel more convenient in a busy or idle state. Examples thereof include a LAST NUMBER REDIAL function, a speed dial function, a call rejection function, a call hold function, a conference call function, and the like. In a private exchange system, a conference call is a function that allows three or more parties to talk simultaneously in groups.

1 is a diagram illustrating a connection state of a time switch 110 and a conference call unit ASIC located on a control board 100 in a general private exchange system, and FIG. The figure for demonstrating the operation | movement of turnover is shown. Referring to FIG. 1, n + 1 highways are connected to an input / output terminal of the time switch 110, and two highways are connected to conference call units 120 and 130. Although not shown, the controller controls the time switch 110 to provide a channel corresponding to the conference call group among the input highways to the conference call unit A120 (120 or 130). Meanwhile, the conference call unit A120 (120 or 130) performs a conference call function for a channel input through the highway.

Hereinafter, the operation of the conference call unit 120 will be described in more detail with reference to FIG. 2. First, if the channels ①, ②, and ③ are configured in the same group as shown in FIG. ) Synthesizes and outputs (HWT0) the channel of the other party except the voice channel of the voice channel coming into the input terminal (HWR0). However, in the general private switching system, since only two conference call units 120 and 130 are used in the control board 100 for controlling the PCM channel, as shown in FIG. It is limited to the number of channels that two conference call units 120 can manage. For example, if there are 30 channels that can be managed simultaneously by one conference call group, the maximum number of conference call groups is limited to 10 groups based on the three-way conference.

Accordingly, an object of the present invention is to provide a conference calling card that can easily expand a group that can participate in a multi-party conference call in a private exchange system, and a conference call group extension method using the same.

The present invention for achieving the above object is a conference call card for expanding a conference call group in a private exchange system,

The conference call unit AIZ, which synthesizes and outputs the voice channels of the other party in the multi-party conference, and the time switch AIZ, which switches each of the input and output terminals of the AIZ, respectively, to the n-channel highway input and output terminals of the private exchange. Characterized in that it consists of a calling card.

In addition, by extending the conference call group by mounting the conference card in the subscriber module slot of the system.

1 is a connection state of the time switch and the conference call unit ASIC located on the control board 100 in a general private exchange system.

FIG. 2 is a view for explaining the operation of the conference call unit Aid in FIG.

3 is a block diagram of a conference call card (200A, 200B) according to an embodiment of the present invention.

4 is a view for explaining the operation of the conference call unit 220 in the conference call card (200A, 200B) according to the embodiment of the present invention.

Hereinafter, an operation according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram of a conference call card 200A and 200B according to an embodiment of the present invention, and FIG. 4 is a conference call unit of the conference call card 200A and 200B according to an embodiment of the present invention. The figure for explaining the operation of 220 is shown.

First, referring to FIG. 3, each of the conference call cards 200A and 200B according to an exemplary embodiment of the present invention includes a time switch aid 210 and a conference call unit 220. ). The time switch AI 210 switches the 30-channel PCM highway (PCM_IN_0) coming from the private exchange to the input terminal of the conference call unit AC 220. Conference call unit 220 is synthesized (①, ②, ③) and outputs the voice channels of the other party to the input terminal as described in the prior art as shown in FIG. Then, the time switch AI 210 switches the output terminal of the conference call unit AC 220 to the PCM highway output terminal PCM_OUT_0 to establish a conference call function through the conference call card 200A.

If one conference call group is composed of 3 or more and 30 characters or less and the conference call group is based on a three-way call, up to 10 conference call groups may be formed in one conference call card 200A. Therefore, as shown in FIG. 3, each time the conference call cards 200A and 200B including the time switch AI 210 and the conference call unit 220 are added, up to 10 conference call groups may be added. have. Such conference calling cards can be expanded into a conference call group by being mounted in slots formed in the subscriber module as needed.

As described above, the present invention has the advantage that the conference call group can be expanded if necessary by modifying the conference call unit AI chip fixed on the control card of the private exchange system to the card type.

Claims (2)

A conference calling card for expanding a conference call group in a private exchange system, The conference call unit AIZ, which synthesizes and outputs the voice channels of the other party in the multi-party conference, and the time switch AIZ, which switches each of the input and output terminals of the AIZ, respectively, to the n-channel highway input and output terminals of the private exchange. Conference call card, characterized in that consisting of calling cards. A method for extending a conference call group in a private exchange system, comprising: a conference call unit AIZ that synthesizes and outputs voice channels of a counterpart in a multi-party conference; Conference call group, characterized in that the conference call group is extended by placing a time switch agile that switches to each of the input and output terminals on a single conference card and mounts the conference card in the subscriber module slot of the system. Extension method.