KR20070111050A - Method for transmitting telephone number of sending terminal in private branch exchange - Google Patents

Abstract

A sender telephone number information transmission method of a switching system is provided to be capable of transmitting a telephone number of a reception telephone line to a sender's mobile communication terminal as a short message, thus call connection with the reception telephone line is directly available without demanding an extension exchanging function. A call connection request signal to a particular extension number of a PBX(Private Branch Exchange) is generated from a sending mobile communication terminal(S301). The PBX analyzes the request signal to extract/store a telephone number of the sending terminal, and generates an extension number corresponding to the request signal by using a DID(Direct Inward Dialing) digit conversion table stored in the PBX(S302,S303). Call connection is attempted between the generated extension number and the sending terminal(S304). If the call connection fails, a short message including extension number information is generated(S305,S306). The short message is transmitted to the sending terminal(S307).

Description

Method for transmitting telephone number of sending terminal in Private Branch Exchange}

1 is a block diagram of a communication network for implementing a method for transmitting caller phone number information according to the present invention;

2 is a block diagram of an exchange system according to the present invention;

3 is a flowchart illustrating a method for transmitting caller telephone number information of an exchange system according to the present invention.

Description of the main parts of the drawing

100: mobile communication terminal 110: base station

111: base station controller 112: base station transmission system

120: exchange 130: message transmission center

140: public telephone network 150: private switching system

201: control unit 202: memory unit

203: DID Digit Converter 204: Short message generating module

205: interface

The present invention relates to a method for transmitting caller telephone number information of an exchange system, and more particularly, to a call connection with a specific telephone line connected to a private exchange through a DID-type private exchange. The present invention relates to a method for transmitting caller's telephone number information of a switching system, which transmits a telephone number of a receiving telephone line in a short message so that a call can be directly connected to the receiving telephone line without requiring an extension exchange.

A private branch exchange (PBX) is a telephone exchange system that allows all employees to share a certain number of external telephone lines used in a company and automatically connects telephones among internal users connected to the extension. As an exchange method applied to such a private exchange, there is a direct inward dialing (DID) method. Direct dialing (DID) is a method in which the local telephone company allocates a portion of the telephone number band to a company's private exchange.

In the case of the DID scheme, the company can actually provide a telephone number to each employee without having to connect as many lines as the telephone number assigned to his private exchange. For example, a company could borrow 100 telephone numbers from a local telephone company while using only eight physical telephone lines, i.e. trunk lines.

On the other hand, when using a private exchange of the DID system, when a call is received from the outside from the outside, if the caller does not know the extension number of the person who wants to call the call is connected to the desired person through the direct extension (DID) method. However, in the process of connecting with a specific person, call connection is often delayed or disconnected. In this case, the caller must call the private exchange again and wait for a call connection with a specific agent.

The present invention has been made to solve the above problems, and in a method for making a call connection with a specific telephone line connected to a private exchange through a DID-type private exchange, the caller's mobile communication terminal of the incoming telephone line It is an object of the present invention to provide a method for transmitting caller's telephone number information of an exchange system that allows a telephone connection to a receiving telephone line directly without requiring an extension exchange by transmitting the telephone number in a short message.

A method for transmitting caller's telephone number information of a switching system for achieving the above object includes generating a call connection request signal from a calling mobile communication terminal to a specific extension number of a private switching system, and connecting the call to the private switching system. Analyzing the request signal, extracting and storing a telephone number of a corresponding calling party mobile communication terminal, and generating an extension number corresponding to the call connection request signal using a DID digital conversion table stored in the private switching system; And attempting to connect a call between the generated extension number and the calling mobile terminal, generating a short message including the generated extension number information when the call connection fails. And transmitting to the calling mobile terminal. All.

Preferably, the DID digital conversion table stores an extension number connected to the private switching system, and each extension number corresponds to a call connection request signal applied to the private switching system.

According to a feature of the present invention, when a call connection request signal from the calling mobile communication terminal is input to the private switching system, the call connection request signal is analyzed, and the telephone number of the calling mobile communication terminal is stored and connected to the private switching system. If the call connection with the specific extension number fails, the short message containing the specific extension number information is transmitted to the calling mobile station's telephone number so that the user of the calling terminal does not go through the exchange process later. The extension number, that is, the direct number can be directly dialed to induce a call to improve the user's convenience.

Hereinafter, a method of transmitting caller phone number information of an exchange system according to the present invention will be described in detail with reference to the accompanying drawings. 1 is a block diagram of a communication network for implementing a method of transmitting caller phone number information according to the present invention, FIG. 2 is a block diagram of a switching system according to the present invention, and FIG. 1 is a flowchart illustrating a method of transmitting caller phone number information.

First, as shown in FIG. 1, a communication network for implementing a method of transmitting caller phone number information includes a mobile communication terminal 100, a base station 110, an exchanger 120, a message transmission center 130, and a public telephone network (PSTN). a public switched telephone network (140) and a private switching system (PBX) 150.

The base station 110 includes a base station transmission system (BTS) 112 for performing a wireless connection between the mobile communication terminal 100 or a wireless connection between the mobile communication terminal and a wired terminal, and a plurality of base station transmission systems. And a base station controller (BSC) 111 that controls 112 and performs call mobility management and the like related to call processing. The switch 120 plays a role of transmitting and receiving data and control signals between other communication networks such as a public switched telephone network (PSTN) 140 or between a lower network of a base station of the same operator.

The private switching system 150 receives the call connection request signal from the mobile communication terminal or the wired terminal via the public telephone network (PSTN) 140 and is responsible for call connection with the corresponding mobile communication terminal or the wired terminal. Play a role. Detailed configuration of the private exchange system 150 will be described later.

On the other hand, the message transmission center 130 serves to standardize the message data received from the mobile communication terminal or the private exchange system 150 in a form suitable for transmission to the receiving side mobile communication terminal to provide to the exchange 120. Do it. The message controlled by the message delivery center 130 includes a short message.

The private exchange system (PBX) 150 includes a control unit 201, a memory unit 202, a DID digit converter 203, and a short message generating module 204, as shown in FIG. It is composed of a combination. The control unit 201 controls overall operations of the private exchange system 150 including, for example, a short message generation and transmission process. The memory unit 202 stores a DID digit conversion table. The DID digit conversion table stores extension number information connected to a corresponding private switching system 150, and each extension number is stored in the public switched telephone network (PSTN) ( 140 corresponds to the call connection request signal applied via the interface 205. In addition, the memory unit 202 analyzes a call connection request signal input from the public telephone network under the control of the controller 201 and stores the calling party number, that is, the telephone number of the calling party mobile communication terminal.

When the call connection request signal is applied from the public telephone network, the DID digital conversion unit 203 converts the corresponding extension number based on the DID digital conversion table of the memory unit 202. The extension number generated through the DID digital conversion table is a kind of direct number because the station number is fixed.

The short message generating module 204 receives a call connection request signal from the calling mobile communication terminal through the public telephone network and generates an extension number, that is, a direct number through the DID digital conversion table. If the call is not connected to the person in charge, the telephone number of the calling mobile terminal stored in the memory unit 202 is extracted, and the extension number converted by the DID digital conversion unit 203, that is, the direct number is extracted. It generates a short message containing the converted extension number information to the phone number of the calling mobile communication terminal. The generated short message is transmitted to the exchange 120 and the message transmission center 130 through the interface 205 under the control of the controller 201.

A method of transmitting caller phone number information of an exchange system using a communication network having such a configuration will be described below.

First, as shown in FIG. 3, a step of calling a representative telephone number of a specific private switching system 150 is performed from a predetermined calling party mobile communication terminal (S301). Specifically, when a call connection request signal is generated from the calling mobile communication terminal, it is input to the private switching system 150 connected to the public telephone network (PSTN) 140 via the base station and the switch 120.

When the call connection request signal of the calling mobile communication terminal is input through the interface 205 of the private switching system 150, the DID digital conversion unit 203 controls the memory unit 202 under the control of the control unit 201. The extension number corresponding to the call connection request signal is generated by using the DID digital conversion table stored in S303. Subsequently, a call connection between the extracted extension number and the calling mobile terminal is attempted (S304). On the other hand, the memory unit 202 analyzes the call connection request signal input from the public telephone network under the control of the control unit 201 and stores the telephone number of the calling mobile communication terminal (S302).

When the call connection between the extracted extension number and the calling mobile terminal is unsuccessful (S305), the short message generating module 204 of the calling mobile terminal is stored in the memory unit 202. Extract a telephone number, extract the extension number converted by the DID digital conversion unit 203, that is, a direct number, and generate a short message containing the converted extension number information to be transmitted to the telephone number of the calling mobile communication terminal. (S306). If the call connection is successful, the call connection between the calling mobile terminal and the corresponding extension number is normally performed (S308).

Subsequently, under the control of the control unit 201, the generated short message is transmitted to the exchanger 120 and the message transmission center 130 through the interface 205, and ultimately transferred to the calling mobile terminal (S307). . The user of the calling mobile terminal can directly call the direct number of the private exchange system 150 included in the received short message, that is, the extracted extension, to make a call with the person in charge of the corresponding extension.

The method of transmitting caller's telephone number information of an exchange system according to the present invention has the following effects.

When a call connection request signal from the calling mobile communication terminal is input to the private switching system, the call connection request signal is analyzed and the telephone number of the calling mobile communication terminal is stored, and the call extension request signal is connected to a specific extension number connected to the private switching system. If the call connection fails, the short message containing the specific extension number information is transmitted to the calling mobile terminal's telephone number, so that the user of the calling mobile terminal does not go through a later exchange process to the extension, that is, the direct number. It is possible to improve the user's convenience by directly inducing a call.

Claims (2)

Generating a call connection request signal from a calling mobile communication terminal to a specific extension of a private switching system; The private exchange system analyzes the call connection request signal, extracts and stores the telephone number of the calling party's mobile communication terminal, and responds to the call connection request signal using a DID digital conversion table stored in the private exchange system. Generating an extension number; Attempting a call connection between the generated extension number and the calling mobile terminal; Generating a short message including the generated extension number information when the call connection fails; And transmitting the short message to the calling party's mobile communication terminal. The switching system of claim 1, wherein the DID digital conversion table stores an extension number connected to the private switching system, and each extension number corresponds to a call connection request signal applied to the private switching system. How to send caller ID information.

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