KR100264853B1 - Method for conference dispatch by virtual channel in private exchange system - Google Patents

Abstract

PURPOSE: A method for relaying a conference using a virtual channel in a private exchange system is provided to add up voice data of conference callers, and to receive voice signals divided by the number of the callers, and to transmit the voice signals to simple listeners. CONSTITUTION: If relaying functions is requested from commanders, a private exchange system calls subscribers(A-Z) by referring to information relating to the subscribers(A-Z) stored in a memory(110). If responses are transmitted from the called subscribers(A-Z), the private exchange system controls a time switch(120) and a conference call unit(130), and sets up a virtual channel between the time switch(120) and the conference call unit(130). The private exchange system transmits conference call contents between conference callers to the time switch(120) through the virtual channel. The private exchange system transmits the conference call contents to simple listeners through a subscriber interface(140).

Description

How to command meeting using virtual channel in private exchange system {METHOD FOR CONFERENCE DISPATCH BY VIRTUAL CHANNEL IN PRIVATE EXCHANGE SYSTEM}

The present invention relates to a conference command method using a virtual channel in a private exchange system, and more particularly, to a conference command method for transmitting a conference call content to a simple listener using a virtual channel in a private exchange system.

In general, a private exchange system has a simultaneous command function in which a subscriber calls multiple subscribers and simultaneously transmits information. The simultaneous command function cannot transmit or receive information between subscribers because one subscriber unilaterally transmits information to multiple subscribers.

In a conventional private exchange system, a conference call function as shown in FIG. 1 performs a conference call function between a plurality of subscribers.

1 is a view illustrating a connection structure of a conference call channel in a conventional private exchange system, wherein the controller 100, the memory 110, the time switch 120, the conference call unit 130, the subscriber matching unit 140, and the subscriber are shown. It consists of (A-Z).

Referring to FIG. 1, in the conventional private exchange system, the conference call function controls the channel of the conference call unit 130 in the controller 100 to make a call between a plurality of subscribers. In such a conventional private exchange system, the maximum number of subscribers is limited in order to prevent howling due to superimposition of subscriber voice signals when implementing Japanese command. That is, since the channels chA 'to chN' capable of making conference calls in the conventional private exchange system are limited, the number of subscribers that can actually make conference calls is limited. For example, when subscriber A is regarded as a commander and a plurality of subscribers B to Z are regarded as command recipients, a subscriber who is actually able to make a conference call is connected through the conference channels 130 and subscriber channels chA to chN connected to the channel. Limited to subscribers. In other words, in the conventional private exchange system, the conference call function is divided into a command receiver, a conference caller who is capable of a conference call, and a simple listener who listens only to information transmitted from the commander.

As such, the conference call function in the conventional private exchange system is available only to a predetermined number of people, so the simple listener does not have a path with the conference call unit 130 and thus cannot hear the contents of the call between the conference callers other than the commander.

Accordingly, an object of the present invention is to provide a method in which a private listener as well as a conference caller can listen to a conference call using a virtual channel in a private exchange system.

The present invention for achieving the object comprises a memory for storing information about the subscriber, a conference call unit for performing a conference call function between a plurality of subscribers, and a time switch for exchanging channels between the conference call unit and the subscriber When a simultaneous command function is requested from the commander in the private exchange system, a first process of calling the corresponding subscribers by referring to the information on the subscriber stored in the memory; and, if there is a response from the calling subscribers, the time switch and the A second process of establishing a virtual channel between the time switch and the conference call unit by controlling a conference call unit, and transmitting the conference call content between conference callers to the time switch through the set virtual channel in the conference call unit; And a third step, the conference call content transmitted through the virtual channel in the time switch. Characterized in that the fourth process of transmitting to the simple listener through the subscriber matching unit, respectively.

1 is a view showing a connection structure of a conference call channel in a conventional private switching system.

2 is a view showing a connection structure of a conference command channel using a virtual channel in a private exchange system according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a diagram illustrating a connection structure of a conference command channel in a private exchange system according to an exemplary embodiment of the present invention, wherein the control unit 100, the memory 110, the time switch 120, the conference call unit 130, and the subscriber station are connected. It consists of a matching unit 140 and subscribers A to Z. In particular, the private exchange system according to the embodiment of the present invention further connects a virtual channel for delivering the conference call contents to the simple listener between the time switch 120 and the conference call unit 130. Here, the virtual channel chZ 'is a channel for transmitting the signal divided by the number of conference callers to the time switch 120 after the conference call unit 130 adds voice data of the conference callers.

Referring to Figure 2 will be described a conference command method using a virtual channel in a private exchange system according to an embodiment of the present invention. The controller 100 controls the overall operation of the private exchange system according to the embodiment of the present invention. The memory 110 stores a control program and subscriber information data for performing a conference call function according to an embodiment of the present invention. The time switch 120 exchanges voice signals and data through each channel under the control of the controller 100. The conference call unit 130 may be implemented with a D / A converter, an adder, an A / D converter, a time switch 120, and a framer, and performs a conference call function between subscribers by performing channel exchange in both directions. . In particular, the conference call unit 130 according to the present invention adds all the voice data of the conference callers transmitted from the time switch 120 and then divides the signal divided by the number of conference callers into the time switch 120 through the virtual channel chZ '. send. The subscriber matching unit 140 transmits the voice signal transmitted from the time switch 120 to the corresponding subscriber, and provides the voice data transmitted from the subscribers to the time switch 120.

In an embodiment of the present invention, the commander is subscriber A, the conference caller making a conference call with the commander is subscribers B to N, and the simple listener who listens to only the contents of the call between the commander and the conference caller is subscriber N + 1. It assumes -Z and demonstrates.

First, when the subscriber A requests the Japanese command function through the subscriber matching unit 140, the controller 100 calls the corresponding subscribers through the subscriber matching unit 140 according to the information stored in the memory 110. When the called subscribers respond, the controller 100 controls the time switch 120 and the conference call unit 130 to provide simple listeners N + 1 between the time switch 120 and the conference call unit 130. A virtual channel chZ 'is set for communicating the conference call contents to the Z. Then, the time switch 120 exchanges channels in both directions with the conference call unit 130 through the channels chA to chN, which are dotted paths, as shown in FIG. 2, under the control of the controller 100. In addition, the time switch 120 adds the call contents of subscribers A to N, which are conference callers, transmitted from the conference call unit 130 through the virtual channel chZ ', and receives a signal divided by the number of conference callers. It transmits to subscribers N + 1 to Z, which are simple listeners, respectively. That is, the simple listeners N + 1 to Z receive the voice signals divided by the number of conference callers after adding all the contents of the conference call between the conference callers through the subscriber matching unit 140.

The controller 100 receives voice data from subscribers A to subscribers N, which are conference callers, adds all of them, and then divides the number of conference callers N into the time switch 120 through the virtual channel chZ '. Control the conference call unit 130 to be delivered to. That is, the conference call unit 130, under the control of the control unit 100, sums up all the voice data from subscribers A to subscribers N, which are conference callers transferred through the respective channels chA to chN, from the time switch 120 as shown in the following equation. Afterwards, the signal divided by the number of conference callers N is transferred to the time switch 120 through the virtual channel chZ '.

m: number of subscribers from subscriber A to subscriber N

Here, the sum of voice data from subscribers A to subscriber N, which are conference callers transmitted through each channel chA to chN, and then divided by the number of call subscribers N must be divided by the number of voice data plus a certain level of voice signal. It is intended to provide the appropriate call quality by maintaining a.

In addition, the controller 100 adds all the voice data from subscribers A to subscribers N, which are the conference passers communicated through the virtual channel chZ ', so that the voice signal divided by the number of conference callers N is delivered to the subscriber matching unit 140. Control position 120. That is, the time switch 120 adds all the voice data from subscribers A to subscribers N, which are conference callers transferred from the conference call unit 130 through the virtual channel chZ ', under the control of the control unit 100, and thus the number of conference callers N. The voice signal divided by the signal is transmitted to the subscriber matching unit 140.

Then, the control unit 100 adds all the voice data from the subscriber A to the subscriber N delivered from the time switch 120, and adds the voice signals divided by the number of conference callers N to the simple listeners N + 1 to Z, respectively. The summation part 140 is controlled. That is, the subscriber matching unit 140 adds all the voice data from the subscriber A to the subscriber N transmitted from the time switch 120 under the control of the control unit 100, and adds the voice signals divided by the number of conference callers N to each simple listener N +. Transfer from 1 to Z.

In other words, the controller 100 configures the virtual channel chZ 'between the time switch 120 and the conference call unit 130, and the subscriber A to the subscriber transmitted through the virtual channel chZ' from the conference call unit 130. After adding all voice data up to N, the signal divided by the number of conference callers N is transmitted to the subscriber matching unit 140 through any channel in the time switch 120. Then, the controller 100 controls the subscriber matching unit 140 to add all the voice data from subscriber A to subscriber N so that signals divided by the number of conference callers N are transmitted to the simple listeners N + 1 to Z, respectively. Therefore, the simple listeners N + 1 to Z can listen to the contents of the conference call between subscriber A and subscriber N through the virtual channel chZ '.

As described above, the present invention can accommodate an unlimited number of subscribers who can listen to the meeting contents without participating in the meeting when implementing the Japanese order in the private exchange system. In the conventional private exchange system, the simple listener could receive voice information only from the commander during the meeting of the conference call group, but the present invention can also receive the entire conference call content.

Claims (4)

A conference command method using a virtual channel in a private exchange system having at least a conference call unit performing a conference call function among a plurality of subscribers and a time switch for exchanging channels between the conference call unit and subscribers, Configuring a virtual channel between the conference call unit and the time switch; Transmitting the contents of a call between conference callers by the conference call unit as a voice signal of one conference caller and transmitting the same to the time switch through the virtual channel; And transmitting a voice signal transmitted through the virtual channel in the time switch to a simple listener through a subscriber matching unit, respectively. The method of claim 1, In the time switch, after adding all voice data of conference callers from the conference call unit through the virtual channel, a voice signal divided by the number of conference callers is received and transmitted to the simple listeners through the subscriber matching unit. Conference command method using a virtual channel. A memory for storing information about the subscriber, a conference call unit performing a conference call function among a plurality of subscribers, a time switch for exchanging channels between the conference call unit and the subscriber, and data transmitted and received between the time switch and the subscriber. A conference command method using a virtual channel in a private exchange system having at least a matching subscriber matching unit, A first step of calling the corresponding subscribers by referring to the information on the subscriber stored in the memory when a commanded command is requested from a predetermined commander; A second process of establishing a virtual channel between the time switch and the conference call unit by controlling the time switch and the conference call unit if there is a response from the calling subscribers; A third process of transmitting, by the conference call unit, a conference call content between conference callers through the set virtual channel to the time switch; And a fourth process of transmitting the contents of the conference call transmitted through the virtual channel in the time switch to a simple listener through the subscriber matching unit. The method of claim 3, wherein the third process, The conference call unit adds all the voice data of the conference callers to the contents of the conference call through the virtual channel and transmits a voice signal divided by the number of conference callers to the time switch. Command method.

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