KR100213660B1 - Simultaneous conference connecting method using exclusive line - Google Patents

Abstract

1. Technical field to which the invention described in the claims belongs

A method of concurrent conference connection using a private line in a private branch exchange.

2. Technical Challenges to be Solved by the Invention

Conventionally, in order to use the conference function, the person to be conferenced personally must be called, and the person to be conferred to be called before the call of all the conferenced persons is in a pending state, and has to wait while listening to the hold sound.

3. Paper of the inventive solution

A method for concurrent conference connection in a plurality of private switches connected to a private line, wherein a conference target subscriber number is registered in each of the private exchanges, and a concurrent conference request is generated, simultaneously calling the registered conference subscriber number.

4. Important Uses of the Invention

PUBLIC EXCHANGE.

Description

How to connect concurrent conference using leased line

FIG. 1 is a view showing a connection relationship of a private branch exchange interconnected with a private line according to an embodiment of the present invention; FIG.

FIG. 2 is a block diagram of a private branch exchange according to an embodiment of the present invention; FIG.

FIG. 3 is a view showing a control flow for registration of a conference target subscriber according to an embodiment of the present invention; FIG.

FIG. 4 is a diagram illustrating a memory structure in which a conference target subscriber is registered according to an embodiment of the present invention; FIG.

FIG. 5 illustrates a control flow for concurrent conference connection according to an embodiment of the present invention; FIG.

The present invention relates to a private line system of a private branch exchange, and more particularly, to a method of calling a plurality of persons to be conferenced through a dedicated line and concurrently connecting the conference.

In general, a private branch exchange has performed private exchange period communication through an E & M (Ear and Mouth) private line providing separate data transmission and reception lines. In addition, since the E & M system uses an analog signal, when the length of the line becomes long, various problems such as attenuation of a call signal and occurrence of an excessive sidetone are caused. In order to solve the above problem, a four-wire E & M system is used in which a two-wire E & M system is used for short-distance communication and a transmission and reception system is used for long-distance communication.

Conventional PABXs had a conference function with the ability to hold up to 5 subscribers including extension and trunk line. However, conventionally, in order to use the conference function, the person to be conferenced personally has to be called, and the person to be conferred to be called until all the persons to be conferenced are put in a pending state and the user has to wait while listening to the hold sound.

As described above, conventionally, in order to perform a conference of a plurality of subscribers, it has been inconvenient for a meeting presiding person to perform a troublesome procedure of calling a conference person individually to conduct a conference.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a method of registering a conference subscriber and connecting simultaneous calls with other system subscribers through a dedicated line.

Another object of the present invention is to provide a method for implementing simultaneous communication through a private line connecting private exchange periods.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, referring to FIG. 1, a connection relationship between a private branch exchange according to an embodiment of the present invention is shown, and the private branch exchanges 2, 4 and 6 are connected to each other via exclusive lines 8, 10 and 12. In particular, the dedicated lines 8, 10, and 12 use the E & M exclusive line because the E & M exclusive line provides separate data transmission and reception lines so that data can be transmitted during various private exchange periods. The terminals 14, 16, and 18 represent a conference target terminal.

The construction of a private branch exchange according to an embodiment of the present invention disclosed in FIG. 1 is as shown in FIG.

Referring to FIG. 2, the configuration of the private branch exchange will be described. The control unit 20 controls the overall operation of the private branch exchange according to the program set in the ROM 22. In particular, the present invention performs overall control for implementing the synchronous conference function according to the present invention. The ROM 22 stores an initial program and an operation program of the controller 20, and stores an operation program for implementing the simultaneous conference function according to the present invention. The RAM 24 stores data generated according to an extension number and a function of performing the exchange function. In particular, the RAM 24 stores the data generated by the concurrent conference call destination extension number and the dedicated line E & M, And stores information specifying the other party's private exchange system to be performed. The switching circuit 26 performs a switching operation under the control of the controller 20, in particular, connects the target extension number according to the synchronous conference function with a dedicated line E & M. Under the control of the control box 20, the CO line circuit 28 connects a plurality of CO lines drawn from a public switchboard (not shown) to the switching circuit 26. The extension circuit 30 connects the plurality of extension terminals to the switching circuit 26 under the control of the controller 20. The ring generating unit 32 sends a ring under the control of the control unit 20 when there is a call request from the CO line circuit 28 or the extension circuit 30 to a specific extension terminal. The dedicated line circuit 34 connects a plurality of dedicated lines to the switching circuit 26 for communication with another private switching center. The DTMF transmitter 36 converts the digits input from the control unit 20 into DTMF and transmits the converted DTMF to the switching circuit 26. The DTMF receiver 38 receives the DTMF signal from the switching circuit 26, converts the DTMF signal into a digit, and provides the DTMF signal to the controller 20.

The control flow for registering a conference target subscriber according to an embodiment of the present invention is as shown in FIG. Referring to the registration procedure, a registration process is roughly described. The registration process includes requesting a subscriber number input if there is a subscriber registration request, and storing the subscriber number input in response to the request, corresponding to the index.

The memory structure according to an embodiment of the present invention is as shown in FIG. 4. Referring to FIG. 4, the memory structure is configured to store a subscriber number for a conference corresponding to an index.

The control flow for performing the concurrent conference connection according to an embodiment of the present invention is as shown in FIG. Referring to FIG. 2, a connection procedure of a simultaneous conference will be described with reference to FIGs. 1 and 2. Referring to FIG. 1, a connection request signal is transmitted when a simultaneous conference request is generated in a private branch exchange that hosts a conference. The method comprises the steps of: connecting a simultaneous call by calling a subscriber, performing a simultaneous call mode when the acknowledgment signal is received, transmitting a conference end signal when a simultaneous call is terminated, Transmitting an acknowledgment signal and terminating the call; and terminating the call upon receiving the acknowledgment signal.

Hereinafter, an operation according to an embodiment of the present invention will be described in detail with reference to the above-described configuration.

First, for ease of detailed explanation according to an embodiment of the present invention, it is explained beforehand that the subscriber terminal 14 of the first private branch exchange 2 shown in FIG. 1 is assumed to preside a simultaneous conference. On the other hand, the presiding of the simultaneous conference is connected to the private line, and any private exchange registered with the simultaneous conference function will be possible.

Referring to FIG. 3, the control unit 20 detects whether the key data requesting the conference target subscriber registration is input from the corresponding terminal 14 (step 310). It is preferable that the corresponding subscriber refers to all the extension subscribers registered in the simultaneous conference.

When the registration request is detected, the controller 20 sets the counter value n to sequentially designate the index in step 312 in step 312. In step 312, If the value of n is set to 0, the controller 20 requests the terminal 14, which has requested the conference target subscriber registration, to input the subscriber number of the terminal corresponding to the simultaneous conference target in step 314.

If the subscriber number input in response to the subscriber number input request is detected in step 316, the controller 20 proceeds to step 318 and stores the subscriber number corresponding to the n-th index of the memory table provided in the RAM 24.

In step 320, it is determined whether data requesting completion is input from the terminal 14. If there is no completion request, the controller 20 proceeds to step 322 to increment the value of n by one and then returns to step 314 to register the next subscriber number. However, if a completion request is detected in step 320, the controller 20 proceeds to step 324 and switches to the standby mode.

Referring to the data stored in FIG. 4 according to FIG. 3, the registration process will be described. In step 310, an index 0 is selected if there is a registration request, and a subscriber number is requested in step 314. When the subscriber number 101 is input in response to the input request, the subscriber number 101 is registered corresponding to the index 0 in step 318. In step 322, index 1 is selected. If subscriber number 117 is input in step 316, the process proceeds to step 318, where 117 is stored in correspondence with 1. If it is determined in step 320 that there is no completion request, the process proceeds to step 322 to select index 2 and then returns to step 314. If the input of the subscriber number 121 is detected in step 316, If it is determined in step 320 that a completion request is received,

The structure of the RAM 24 registered and stored through the above process is as shown in FIG. 4, and the above-described process is applied to all of the PABXs 2, 4, and 6. Meanwhile, although the above-described registration operation is performed on one counterpart private switchboard, it is obvious that a plurality of private switchboards can be applied as a result of performing the operation corresponding to each of the private switches.

Next, referring to FIG. 5, the first private branch exchange 2 detects whether a simultaneous conference request is input from the first terminal 14 in step 510. FIG. If there is a simultaneous conference request in step 510, the first private branch exchange 2 transmits a conference request signal f21 to the second private branch exchange 4 through the dedicated line 8 in step 512. [ In addition, in step 514, the third private branch exchange 6 transmits the conference request signal f31 through the private line 10. The second private branch exchange 4 transmits an acknowledgment signal b21 to the first private branch exchange 2 through the private line 8 in response to the conference request signal f21 in step 516. [ The third private branch exchange 6 also transmits an acknowledgment signal b31 to the first private branch exchange 2 through the private line 10 in response to the conference request signal f31 in step 518. [

After the second PBX 4 transmits the acknowledgment signal b21, the second PBX 4 calls the conference target subscriber in step 520. In addition, the third private branch exchange 6 also transmits the acknowledgment signal b31, and then calls the conference target subscriber in step 524. On the other hand, although not shown in the drawing, the first private branch exchange 2 will also call a simultaneous conference subscriber.

At this time, the call is made by controlling the reading unit 32 to read the subscriber number registered in the RAM 24 to provide a ring tone.

In steps 520 and 524, the second and third PABXs 4 and 6 perform the simultaneous communication mode in steps 522 and 526 after calling the conference target subscriber. The simultaneous call mode is performed by controlling the switching circuit 26 to connect the called subscriber to the first private branch exchange 2 through the private line circuit 34 as in the conventional conference function.

When the first PUK 2 receives the acknowledgment signal in steps 516 and 518, the first PUK 2 proceeds to step 528 to perform the simultaneous call mode. The simultaneous communication mode is also performed by controlling the switching circuit 26 to connect the dedicated lines 8 and 10 connected to the second and third private branch exchange 4 and 6 to the corresponding terminal 14.

The first private branch exchange 2 monitors whether the call is terminated in step 530 during the simultaneous call. If the end of the call is detected, the terminal transmits a conference end signal f22 to the second private branch exchange 4 in step 532. In step 534, the third private branch exchange 6 transmits a conference end signal f32.

The second and third private branch exchanges 4 and 6 send acknowledgment signals b22 and b32 to the first private branch exchange 2 in steps 536 and 538 in response to the conference end signals f22 and f32. send. The second and third private branch exchanges 4 and 6 transmit the acknowledgment signals b22 and b32, and conclude the simultaneous call in steps 542 and 544. [

On the other hand, if the acknowledgment signals b22 and b32 are received in steps 536 and 538, the first private branch exchange 2 proceeds to step 540 and ends the call.

Referring to the data stored in FIG. 4 according to FIG. 5, when the conference request signal is received from the first private branch exchange 2, the second and third private branch exchanges 4 and 6 are connected to the RAM 24 The subscriber of the stored subscriber numbers 101, 117, and 121 is called and connected to the first private branch exchange 2 through a dedicated line.

As described above, according to the present invention, a conference can be held by pressing a function key or a function number in a multi-party simultaneous conference, and quick conference can be held. In addition, by conducting a conference through a leased line, it is possible not only to make a subscriber of another PBX be a subject of simultaneous meetings but also to prevent the subject of the meeting from being disturbed by other external factors.

Claims (2)

A method for connecting a simultaneous conference in a plurality of private exchanges connected by a private line, the method comprising the steps of: registering a conference target subscriber number in each of the private exchanges; A private switching center which receives the conference request signal through the dedicated line, and a private branch exchange, which receives the conference request signal through the private line, transmits the conference request signal to the private branch exchange, And a private switching center transmitting the acknowledgment signal to the private switching center in which the simultaneous conference request is generated and the private switching center transmitting the acknowledgment signal to each of the conference target subscribers and connecting to the private line, Which uses a dedicated line Conference connection. A method for connecting a simultaneous conference in a plurality of PBXs connected by a leased line, the method comprising the steps of: sequentially storing conference target subscriber numbers to be entered if there is a conference target subscriber registration request from an extension subscriber, When a simultaneous conference request is generated from any one of the subscribers, a conference request signal is transmitted to a target private branch exchange through a dedicated line, and when a reception acknowledgment signal is received, the registered conference target subscriber number is called and connected to the exclusive line, Receiving a conference request signal through the dedicated line, transmitting an acknowledgment signal, calling the registered subscriber number, and connecting to the dedicated line, thereby performing a simultaneous conference; One of the conference target subscribers When a conclusion of a conference is detected by a subscriber, transmitting a conference end signal through the dedicated line and blocking a connection to the dedicated line when a reception acknowledgment signal is received; And disconnecting the connection to the dedicated line.