KR100475179B1 - Method for calling in wireless terminal of key phone system and method thereof - Google Patents

Abstract

The present invention relates to a communication method of a wireless terminal in a key phone system in which mobility is guaranteed using a DECT scheme.

To this end, when a call request comes from the outside, a pop-up message displayed on the computer is displayed, and in response, a full paging message is sent to the wireless terminal by the MPB to open the call channel.

In addition, when making a call request to the outside, when a call event is generated from the computer, a full paging message is sent to the wireless terminal by the MPB to open the call channel.

At this time, the wireless terminal may check the call state based on the full paging message.

Therefore, according to the present invention, since mobility is ensured, an effect of further enhancing user convenience is expected.

Description

METHOOD FOR CALLING IN WIRELESS TERMINAL OF KEY PHONE SYSTEM AND METHOD THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless key phone system, and more particularly, to a method of calling a wireless terminal in a key phone system that enables a wireless phone to be efficiently used through a computer in a computer enhanced telephony integration (CTI) consisting of a digital enhanced cordless telephone (DECT) terminal and a computer. It is about.

In general, CTI refers to the integrated technology of computers and telephone exchanges applied to key phones or private exchanges. The CTI executes an application program on a telephone system such as a key phone, and provides functions such as call processing, automatic dialing, automatic pop-up and automatic switching of information screens, and call number identification. In addition, additional functions such as voice storage and retrieval, voice recognition, and fax interworking are further provided.

1 shows a configuration of a conventional CTI. Referring to FIG. 1, the conventional CTI includes a key phone system 120, a key set 130 connected to the key phone system 120 by wire, and a computer 140 connected to the key phone system 120 by LAN. . The key phone system 120 receives a call signal from the outside through the PSTN 100 or transmits a call signal inside.

The key phone system 120 includes a main process board (MPB) 122 that manages overall control of the system, and a DTIB (Digital Terminal Interface Board) 124, which serves as an interface between the MPB 122 and the keysets 130. ) Is provided.

The computer 140 is equipped with an application program, which always monitors events from the MPB 122 of the key phone system 120 and events from computer users.

As described above, the CTI is constituted by pairing a keyset and a computer. Thus, one user can use the keyset and computer at the same time to talk to the outside.

A method for a user to make a call using the CTI configured as described above will be described.

1) In case of receiving call signal from outside

As shown in FIG. 2A, when a call signal is received through the PSTN 100 (S 211), the MPB 122 of the key phone system sends a call setup message to the keyset 130 and the computer 140. Send at the same time (S 213, S 215). At this time, the call setup message sent to the keyset 130 is a ring command, and the call setup message sent to the computer 140 is a pop-up message.

The computer 140 displays a pop-up message, and the user knows that a call signal comes through the pop-up message (S 217).

If the user responds to the pop-up message to make a call, a response event is generated and provided to the MPB 122 of the key phone system (S 219). The MPB 122 sends a speaker phone operation command to the key set 130 (S 221), and thus the call channel is opened to enable the call (S 223).

2) In case of sending call signal from inside

As shown in FIG. 2B, when a user attempts to make a call using an application program (S 231), a call event occurs and is provided to the MPB 122 of the key phone system (S 233).

Then, the MPB 122 sends a speaker phone operation command to the keyset so that the call channel is opened (S235 and S 237). Accordingly, the user can talk to an external counterpart.

3) When the call ends

As shown in FIG. 2C, when the user ends the call using the application program (S 251), a call termination event occurs and is provided to the MPB 122 of the key phone system (S 253).

The MPB 122 sends a call termination message to the keyset so that the call channel is closed (S255 and S257).

As described above, through the CTI pairing the keyset and the computer, the user can exchange a call with an external counterpart using the computer.

However, the conventional key phone system is provided with a keyset connected by wire, and thus mobility is not guaranteed during a call.

The present invention has been made to solve the above problems.

Accordingly, the present invention provides a communication method of a wireless terminal in a key phone system in which mobility is guaranteed using the DECT scheme.

According to a preferred embodiment of the present invention for achieving the above object, in the MPB, when a call signal is received over the public network, displaying a pop-up message on the computer; Providing, at the computer, a response event generated in response to the popup message to the MPB; Sending, at the MPB, a full paging message corresponding to the response event to a wireless terminal; Checking, at the wireless terminal, call state information based on the full paging message, and generating a call open event accordingly; And in the wireless terminal, opening a communication channel in response to the call opening event.

The method of calling a wireless terminal in the keyphone system may include providing, by the computer, a call event generated according to a call attempt of a user to the MPB; Sending, by the MPB, a full paging message corresponding to the call event to a wireless terminal: checking, by the wireless terminal, call state information based on the full paging message, and generating a call open event accordingly; And at the wireless terminal, opening a call channel in response to the call open event.

The call state information may be call opening information.

The method of calling a wireless terminal in the keyphone system may include: providing, at the computer, a call termination event generated in response to an attempt to terminate a call by the user to the MPB; Sending, at the MPB, a full paging message corresponding to the call termination event to a wireless terminal; Checking, at the wireless terminal, call state information based on the full paging message, and generating a call closure event accordingly; And closing, at the wireless terminal, a call channel in response to the call closure event.

The call state information may be call closure information.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

3 shows a configuration of a CTI according to a preferred embodiment of the present invention. Referring to FIG. 3, the CTI includes a key phone system 320, a base station 330 wired to the key phone system 320, a wireless terminal 340 wirelessly connected to the base station 330, and the key phone. It consists of a computer 350 connected to the system 320 by LAN. A wireless terminal interface board (WTIB) 324 that allows the wireless terminal 340 to be used in the key phone system 320 is connected between the MPB 322 and the base station 330. The key phone system 320 is further provided with an MPB 322 for performing overall control.

In general, the DECT system makes a phone call with an external party through a DECT wireless terminal using a WTIB installed in a private exchange (ie, a branch exchange). The WTIB basically supports eight cells with eight base stations, with a cell radius of about 500m at open sites and 50m in an office environment. Therefore, if eight base stations are well arranged, it is possible to make a call freely using a wireless terminal in a certain space.

In order to use the DECT method, the present invention includes a WTIB in a key phone system, a plurality of base stations are connected to the WTIB, and a call can be made to the outside using a wireless terminal.

On the other hand, the key system 320 is installed so that the computers 350 connected to the LAN correspond to the wireless terminals 340 one-to-one. Therefore, it should be noted that one user must have one wireless terminal and one computer so that the present invention can be achieved.

A method of making a call between users by a wireless key phone system in the CTI configured as described above will be described.

1) In case of receiving call signal from outside

As shown in FIG. 4A, when a call signal is received through the PSTN 300 (S411), the MPB 322 simultaneously transmits a call setup message to the wireless terminal 340 and the computer 350 (S413). S 415). Therefore, the wireless terminal rings and a popup message is displayed on the screen of the computer (S417).

If the user checks the pop-up message and responds to it, a response event is generated and provided to the MPB (S 419).

The MPB sends a response message (Response Message) for the response event to the WTIB (S 421). Then, the WTIB converts the response message into a full paging message and sends it to the wireless terminal (S422).

After checking the contents of the full paging message, the wireless terminal generates a call open event in response (S423). In this case, the full paging message includes information on the call opening, and by checking the call opening information, it is possible to know whether the current call is about call opening.

When the call opening event occurs, the wireless terminal opens a call channel so that a user can make a call (S425).

2) Sending call signal to outside

As shown in FIG. 4B, when a user attempts to make a call using an application program provided in the computer (S431), a call event is generated and provided to the MPB (S 433).

The MPB generates a request message in response to a call event and sends it to the WTIB (S 435), and the WTIB converts the request message into a full paging message and sends it to the wireless terminal (S 437). .

The wireless terminal determines whether the call is initiated based on the received full paging message, and generates a call open event (S 439).

Subsequently, the call channel is opened in response to the call open event to make a call (S 441).

3) When the call ends

As shown in FIG. 4C, when the user attempts to terminate the call using the application program to terminate the call in the current call state (S451), a call termination event is generated and provided to the MPB (S 453).

The MPB sends a release message to the WTIB in response to the call termination event (S 455), and the WTIB converts the release message into a full paging message and then sends it to the wireless terminal (S 457). .

Then, the wireless terminal generates a call closure event according to the result of checking the full paging message (S459). In this case, the full paging message includes call closure information.

In addition, when the call closure event occurs, the wireless terminal terminates the call by closing the call channel in response thereto (S 461).

As described above, according to the call method of the wireless terminal in the key phone system according to the present invention, in the wireless key phone system having a wireless terminal applying the DECT method, a call can be made to the wireless terminal by call control by a computer. At any time, you can make calls while moving within a certain distance. Accordingly, the effect that can further enhance the convenience of the user is expected.

In the future, since mobility is ensured, the present invention can be applied to a wireless key phone system employing the DECT method.

1 is a diagram showing a configuration of a conventional CTI.

2 is a process diagram illustrating a method of making a call in the CTI of FIG.

3 is a diagram showing the configuration of a CTI according to a preferred embodiment of the present invention.

4 is a process diagram illustrating a method of making a call in the CTI of FIG.

<Name of the code for the main part of the drawing>

300: PSTN 320: Key Phone System

322: MPB 324: WTIB

330: base station 340: wireless terminal

350: computer

Claims (5)

In the DECT type wireless key phone system composed of an MPB, a wireless terminal, and a computer, Displaying, at the MPB, a pop-up message on the computer when a call signal is received through a public network; Providing, at the computer, a response event generated in response to the popup message to the MPB; Sending, at the MPB, a full paging message corresponding to the response event to a wireless terminal; Checking, at the wireless terminal, call state information based on the full paging message, and generating a call open event accordingly; And At the wireless terminal, opening a call channel in response to the call open event Call method of a wireless terminal in a key phone system comprising a. The method of claim 1, Providing, at the computer, a call event generated according to a user's call attempt to the MPB; In the MPB, sending a full paging message corresponding to the call event to a wireless terminal: Checking, at the wireless terminal, call state information based on the full paging message, and generating a call open event accordingly; And At the wireless terminal, opening a call channel in response to the call open event Call method of the wireless terminal in the keyphone system further comprising. The method of claim 1 or 2, wherein the call state information is call opening information. The method of claim 1, Providing, at the computer, a call termination event generated in response to a call termination attempt of the user to the MPB; Sending, at the MPB, a full paging message corresponding to the call termination event to a wireless terminal; Checking, at the wireless terminal, call state information based on the full paging message, and generating a call closure event accordingly; And At the wireless terminal, closing a call channel in response to the call closure event Call method of the wireless terminal in the keyphone system further comprising. 5. The method of claim 4, wherein the call state information is call closure information.