JPS63196149A - Communication terminal conference system - Google Patents

Abstract

PURPOSE:To vary the number of participated conference terminal equipments by synthesizing inputs from plural terminal lines, outputting the result to a trunk line and providing a conference trunk outputting the input from the trunk line to plural terminal lines simultaneously. CONSTITUTION:When 4 terminal equipments hold a conference, three of terminal equipments 11, 12... are connected to a terminal line 51 of a conference trunk 31. A remaining terminal equipment 1n is connected to a terminal line 51 of the other conference trunk 32, and a trunk line 52 of two trunks 31, 32 is connected to a terminal line 53 of a 3rd conference trunk 3n via a switch 20. Outputs of the conference trunks 31, 32 are synthesized to one and the synthesized outputs are outputted simultaneously to the conference trunks 31, 32. Thus, the synthesized output of conference participated terminal equipments 11, 12...1n is sent simultaneously from the conference trunk 3n to the conference participated terminal equipment 11, 12...1n while branching.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention accommodates and connects a plurality of terminals and conference trunks to a switch, and a connection control device connects participating terminals participating in one conference via the switch. This invention relates to a communication terminal conference method for a switching system connected to a conference trunk.

[Conventional technology]

In the conventional communication terminal conference system, a conference trunk has only one terminal line for connecting participating terminals participating in the conference.

Therefore, in one conference, one conference trunk is connected to the participating terminals via a switch, and the scale of the conference is determined by the capacity of the terminal line of the conference trunk.

[Problem that the invention seeks to solve]

As mentioned above, in the conventional communication terminal conference system, the conference trunk of the switching system accommodates and connects only the terminal line, so when the conference progresses and it becomes necessary, the participating terminals are connected and the nine conference trunks are connected. There is a problem that it is inconvenient to connect and participate in terminals exceeding the number of terminal lines. SUMMARY OF THE INVENTION It is an object of the present invention to provide a communication terminal conference system that solves the above-mentioned problems.

[Ninth way to solve the problem]

Expansion of the communication terminal conference method according to the present invention includes a conference trunk that connects one trunk line in addition to multiple terminal lines, and when the number of participating terminals exceeds the terminal line capacity of this conference trunk, the trunk line is connected to another conference. It has a connection control device connected via a switch as a trunk terminal line.

This line is a combination of multiple terminal lines of the trunk line of the conference trunk.

Nine, one specific means for the conference trunk is a combining means for combining and outputting a plurality of inputs of a terminal line, a branching means for branching one input into a plurality of outputs to the terminal line, and the connection control device. and a switching means for switching the connection so that the output of the combining means is directly connected to the input of the branching means, or the output of the combining means and the input of the branching means are each directly connected to the trunk line.

〔Example〕

Next, the communication terminal conference system of the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the communication terminal conference system of the present invention in a switching system connecting a plurality of terminals. In FIG. 1, the exchange system welfare terminal 11.
Switch 20.12.1n is accommodated and connected. It has conference trunks 31, 32, and 3n, and a connection control device 40.

The switch 20 accommodates and connects the terminals 11-12, 1n and conference trunks 31, 32, 3n, and connects the connection control device 40.
) The connection and release of accommodation lines are controlled. The conference trunks 31 and 32 connect the terminals 11 and 12 participating in the conference to the conventional terminal line 51 via the switch 20, and similarly connect the terminals 1n of the conference trunk 32 to the terminal line 51.

One trunk line 52 of each of the conference trunks 31 and 32 is connected via a switch 20 to a terminal port 1s53 of the conference trunk 3n.

The conference trunks 31 and 32 will be explained with reference to FIG. FIG. 2 is a functional block diagram showing an example of the conference trunks 31 and 32 shown in FIG. 1. In FIG. 2, a conference trunk 300 has terminal terminals 301 . Expansion terminal 3029 for connecting one trunk line 52, combining means 3039, branching means 304. and a switching means 305. The combining means 303 is the terminal line 5
Combine multiple inputs from 1 to form a single output.

The branching means 304 simultaneously receives input from a plurality of terminal lines 5.
Branch to 1 and output. The switching means 305 normally forms a circuit that inputs the output from the combining means 303 to the branching means 304, and when the number of terminals participating in the same conference exceeds three, the switching means 305 switches the output from the connection control device (40 in FIG. 1). In response to a control instruction, the output of the synthesizing means 303 is connected to the branching means 304 to the trunk line 52, and the input from the trunk line 52 is connected to the output of the synthesizing means 303 to the branching means 304, respectively. Therefore, a normal conference trunk 300 connects three terminals to the terminal line 51, simultaneously receives input from these three terminals, combines them, and simultaneously transmits the combined result to the three terminals. The meeting will come true.

Next, a conference involving more than three terminals will be described with reference to FIGS. 1 and 2. For example, when four terminals hold a conference, terminals 11, 12, etc. are connected to the terminal line 51 of one conference trunk 31, and the remaining terminal 1n is connected to the terminal line 51 of one conference trunk 31. The trunk lines 52 of the two conference trunks 31 and 32 are connected to the terminal line 51 and connected to the third conference trunk 3 via the switch 20.
It is connected to the terminal line 53 of n. Since the conference trunk 3n inputs the output of the combining means 303 to the branching means 304, the respective outputs of the conference trunks 31 and 32 are combined into one, and this combined output is simultaneously output to the conference trunks 31 and 32, respectively. Therefore, the outputs of the terminals 11, 12, .・12...1n
A branch is sent simultaneously to

Although the above embodiment describes that the conference trunk has three terminal lines, the number of accommodated lines is not limited.

Although the conference trunk 3n in FIG. 1 does not include trunk lines, the switching system may be unified with the conference trunk shown in FIG. 2. In this case, the conference trunk 3n in Figure 1
In the second stage, up to (3X3=) nine conference participating terminals connect to one active discussion trunk in the second stage through three conference trunks in the first stage, realizing a conference with simultaneous communication. do. By connecting up to the third-tier conference trunk, up to 27 terminals can participate in the conference. The functional block configuration of the conference trunk is not limited to the illustration and description of FIG. 2.

〔Effect of the invention〕

The communication terminal conference system of the present invention has one trunk line as an expansion terminal in addition to a terminal line for accommodating and connecting terminals participating in the conference, and combines inputs from multiple terminal lines and outputs the synthesized signal to the trunk line. By having a conference trunk that simultaneously outputs input from a trunk line to multiple terminal lines, the number of terminals that can participate by connecting the trunk line to the terminal line of the next conference trunk can be increased. This has the effect of improving the service by allowing the number of participating machines to be variable.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the communication terminal conference system of the present invention, and FIG. 2 is a functional block diagram showing an example of the conference trunk of FIG. 1. 11/12/1n...terminal, 20...switch,
31・32・3n・300...Conference trunk, 40・
...Connection control device, 51.53...Terminal line, 52.
...Trunk line, 301/302...terminal, 3o3
...Composition means, 3o4... Branching means, 305...
switching means. $1 figure

Claims (2)

[Claims] (1) A switching system in which multiple terminals and conference trunks are accommodated and connected to a switch, and a connection control unit (central control unit CPU) connects participating terminals participating in one conference to the conference trunk via the switch. In the communication terminal conference system, there is a conference trunk in which multiple terminal lines on the terminal side are combined into one trunk line and connected to the switch, and the number of participating terminals exceeds the capacity of the terminal line of this conference trunk. A communication terminal conference system comprising: a connection control device that connects the trunk line as a terminal line of another conference trunk via a switch. (2) The conference trunk includes a combining means for combining and outputting a plurality of inputs of the terminal line, a branching means for branching one input into a plurality of outputs to the terminal line, and a and switching means for switching the connection so that the output of the combining means is directly connected to the input of the branching means, or the output of the combining means and the input of the branching means are directly connected to the trunk line. 1
Communication terminal conference method described in ).