KR20050021703A - System for Connecting Telephone Call with Public Switched Telephone Network in Portable Communication Terminal, and Method thereof - Google Patents

Abstract

PURPOSE: A wired telephony actor system of a mobile terminal and a method thereof are provided to allow a user to use a wired communication network less expensive than a mobile communication network by using a mobile terminal. CONSTITUTION: A mobile terminal(110) including a wired telephony agent program allowing performing of call communication through the PSTN transmits a call request according to the wired telephony agent program to perform call communication through a fixed line. A wired/wireless terminal(120) including a wired telephony actor program for relaying call communication through the PSTN transfers the call request received from the mobile terminal(110) to the PSTN and relays call communication through the fixed line. A connection unit(130) connects the mobile terminal(110) and the wired/wireless terminal(120) wirelessly or through the fixed line.

Description

System for Connecting Telephone Call with Public Switched Telephone Network in Portable Communication Terminal, and Method

The present invention relates to a method and system for relaying a wired call of a portable terminal, and more particularly, to provide a function of connecting a portable terminal such as a mobile terminal or a portable computer to a wired telephone terminal to perform a wired telephone call. The present invention relates to a wired call relay system of a terminal and a method thereof.

Recently, a wireless Internet service using a communication service through a wireless Internet communication network has emerged even while a user of a mobile terminal moves without restriction of a place. Accordingly, the subscribers of the mobile communication service can freely move and talk with the other party anytime and anywhere using the wireless communication service, and also provide various information necessary for life through the wireless Internet service, such as news, weather, sports, securities, Exchange rates, traffic information, and the like may be provided in various forms such as text, voice, and image.

However, subscribers using mobile communication services over the wireless Internet pay a considerable call fee for using the wireless Internet service in addition to the basic wireless call. Therefore, it is useful to obtain a variety of information necessary for life using a mobile terminal, but the communication fee for it is a significant burden.

On the other hand, as the Internet network is rapidly spreading and data transmission technology is gradually developed, Voice over Internet Protocol (VoIP) related services capable of transmitting and receiving voice calls and data using the Internet are widely used. The advantage of VoIP technology is that telephone service can be implemented while utilizing existing IP network, which greatly reduces the line cost of conventional telephone calls or fax transmissions, thereby allowing telephone users to use the Internet, intranet, and internet service at low rates. It allows you to use international phone service. With the advent of VoIP technology, the utilization of local area network (TN), which combines telephone network and data network into local area network (LAN) using a single IP, is maximizing and the quality of network service is further improved.

However, while having a telephone call using VoIP technology provided in a user's computer, the communication fee can be lowered than that of a conventional wired telephone network, while equipment such as a computer that realizes VoIP technology is fixed at a fixed place. There is a disadvantage that the user using it does not move. In addition, since the VoIP technology communicates using an IP network, when the traffic volume increases, a problem such as a decrease in call quality may occur.

Accordingly, there is a demand for a communication technology that can use a wired communication network that is cheaper than a mobile communication network while moving from a user who wants to make a phone call with a remote person.

The present invention for meeting the needs while solving the above problems, a wired call of a portable terminal providing a function to connect a portable terminal such as a mobile terminal or a portable computer to a wired telephone terminal to perform a landline telephone call An object of the present invention is to provide a relay system and a method thereof.

The present invention for achieving the above object is a wired call relay system of a portable terminal for relaying a telephone call by wire by transmitting a call request of the portable terminal to a public telephone network, wired telephone program for performing a telephone call through the public telephone network And a portable terminal configured to perform a telephone call by wire by sending a call request according to the wired telephone program. A wire / wireless terminal having a call relay program for relaying a telephone call through the public telephone network, and transmitting a call request from the portable terminal to the public telephone network according to the call relay program to relay the wired telephone call; And it provides a wired call relay system of a portable terminal comprising a connection for connecting the portable terminal and the wired or wireless terminal by wire or wireless.

In addition, according to another object of the present invention, a portable terminal for transmitting a call request in accordance with a landline telephone program for making a telephone call through a public telephone network to perform a telephone call by wire; A wired / wireless terminal for relaying the wired telephone call by transmitting a call request transmitted from the portable terminal to the public telephone network according to a call relay program; And a method of relaying a call in a portable terminal of a system including a connection unit connecting the portable terminal and the wired / wireless terminal by wire or wirelessly, detecting that the portable terminal is connected in the wired / wireless terminal, and executing the call relay program. Initiating a first step; A second step of inputting a telephone number for the telephone call in the portable terminal; A third step of transmitting, by the portable terminal, the telephone number to the wired / wireless terminal according to the wired telephone program; A fourth step of transmitting the telephone number from the wire / wireless terminal to the public telephone network to perform the call request; A fifth step of forming a telephone call path between the portable terminal and the communication terminal having the telephone number via the wired / wireless terminal; And a sixth step of transmitting and receiving a voice signal or a data signal between the portable terminal and the communication terminal having the telephone number to perform a telephone call.

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 describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a configuration diagram schematically showing the configuration of a wired call relay system of a portable terminal according to an embodiment of the present invention.

Wired call relay system 100 of the portable terminal according to the present invention has a configuration including a portable terminal 110, a wired and wireless terminal 120, and the connection unit 130.

The portable terminal 110 includes a wired telephony agent program, and transmits a call request according to the wired telephone program to perform a telephone call by wire.

The wired / wireless terminal 120 includes a wired telephony actor program, and transmits a call request from the mobile terminal 110 to a public switched telephone network (PSTN) according to a relay call program. Relays

The connection unit 130 connects the portable terminal 110 and the wired / wireless terminal 120 by wire or wirelessly.

The portable terminal 110 includes a mobile terminal 112, a personal digital assistant (PDA) 114, a cellular phone, a personal communication service (PCS) phone, a global system for mobile (GSM) phone, a wideband CDMA (W-CDMA) phone. , CDMA-2000 phone, MBS (Mobile Broadband System) phone and the like. Here, MBS phone refers to a mobile phone to be used in the fourth generation system currently being discussed. In addition, the portable terminal 110 may include a personal computer 116 or a notebook computer 118 having a program for performing a telephone call using VoIP technology and a landline telephone program according to the present invention.

The wired telephone program provided in the portable terminal 110 and the call relay program provided in the wired / wireless terminal 120 may be a 'C' programming language or an object-oriented 'C ++' depending on the type of the portable terminal 110 or the wired / wireless terminal 120. ',' Java 'programming language, etc. can be implemented.

The wired / wireless terminal 120 is connected to a public telephone network, and when a call request is made to the public telephone network by a key input according to a telephone number, and is connected to the other party, a wired telephone 122 or a wired / wireless combined telephone 124 that performs a telephone call. Can be. In addition, the wired / wireless terminal 120 may be a facsimile telephone 126 that scans the contents recorded on the paper and delivers the data to the counterpart.

The connection unit 130 is a device that connects two devices for communication between the portable terminal 110 and the wired / wireless terminal 120, and may use a cable for cable or a radio frequency device. In addition, the connection unit 130 may use a Bluetooth module.

Bluetooth is a short-range data communication technology that is expected to be installed in various information devices. Bluetooth is a standard that can transmit and receive data at high speed by using radio frequency without physical cable for communication between various electronic devices.

Currently, in order to access the Internet using a mobile terminal, a terminal with a data communication function, a laptop, and a separate cable connecting the two are required. However, using Bluetooth, data communication between devices is wireless and no cable connection is required. Bluetooth has a data transfer rate of 1 Mbps and a transmission distance of 10 to 100 m.

Therefore, when the Bluetooth module is mounted on the portable terminal 110 and the wired / wireless terminal 120, and the portable terminal 110 is close to the wired / wireless terminal 120, the Bluetooth module can recognize each other and exchange data wirelessly.

2 is a configuration diagram schematically showing an internal configuration of a wired / wireless combined telephone 124 implementing the wired / wireless terminal 120.

According to an embodiment of the present invention, a wired / wireless combined telephone 124 having a relay call program includes a wireless handset 202, an antenna 204, an RF module unit 206, a transceiver 208, and a telephone line interface unit 210. Analog Digital Pulse Code Modulation (ADPCM) codec unit 212, microcontroller 214, keypad unit 216, call relay connection unit 218, data memory 220, call relay program unit 222, display unit ( 224) and the like.

The wireless handset 210 converts a user's voice input into a voice signal and transmits it wirelessly, or receives and converts a wireless signal into a voice signal and outputs the audible sound that the user can hear.

The antenna 204 transmits a radio frequency (RF) signal to the air or transmits an RF signal received from the air to the RF module unit 206. In this case, the RF signal is preferably a radio frequency signal having a frequency of 900 MHz, which is an audio signal or DTMF signal transmitted from the portable terminal 110.

The RF module unit 206 converts the transmission message signal into an RF signal and outputs it to the antenna 204, or converts an RF signal applied from the antenna 204 into a reception message signal and outputs the received message signal to the transceiver 208.

The transceiver 208 converts the transmission message data input from the microcontroller 214 into a transmission message signal and outputs it to the RF module unit 206 or converts the received message signal input from the RF module unit 206 into reception message data. The data is converted and transmitted to the ADPCM codec unit 212.

The telephone line interface 210 includes a telephone line port, is connected to a public telephone network (PSTN), transmits an analog signal input from the ADPCM codec unit 212 to a public telephone network, or transmits an analog signal input from a public telephone network. Transfer to ADPCM codec unit 212.

The ADPCM codec unit 212 performs an audio data processing function that encodes or decodes audio data exchanged with the transceiver 208, and converts the received message data input from the transceiver 208 into an analog signal. The conversion is transmitted to the telephone line interface unit 210.

The micro-controller 214 controls the overall operation of the wired / wireless combined telephone 124, and in particular, when the mobile terminal 110 detects the connection of the portable terminal 110 through the call relay connection 218, the micro controller 214 transmits the portable terminal 110 according to the call relay program. Sends a call request to the public telephone network (PSTN) through the telephone line interface 210, and controls the function of transmitting and receiving a message for the telephone call with the portable terminal 110 when the telephone network with the public telephone network is formed.

The keypad unit 216 includes a plurality of key buttons, such as a numeric key for inputting a telephone number, a special key for additional services, and a redial key for redialing a previously called telephone number.

The call relay connection unit 218 receives a call request input from the portable terminal 110 and transmits it to the microcontroller 214, or a gateway for transmitting and receiving a message for a telephone call with the portable terminal 110 after a telephone call path is formed. In charge of the function. In addition, the call relay connection unit 218 transmits a detection signal that detects that the portable terminal 110 is connected to the micro-controller 214.

The data memory 220 stores a plurality of telephone numbers input by the user as data, or stores the call contents as data by the user's key input.

The call relay program unit 222 initializes the call relay connection unit 218 under the control of the microcontroller 214, and transmits the call request input through the call relay connection unit 218 to the public telephone network, or the call relay connection unit ( A call relay program for transmitting and receiving a message with the portable terminal 110 through 218 is stored.

The display unit 224 outputs characters input from the keypad unit 216, or displays an operation state of the wired / wireless combined telephone 124.

In FIG. 2, the wired / wireless combined telephone 124 is illustrated as the wired / wireless terminal 120. However, when the wired / wireless terminal 120 is implemented as a wired telephone, the handset corresponding to the wireless handset 202 is used in the wired / wireless combined telephone 124. RF module unit 206 including the antenna 204, transceiver 208, ADPCM codec unit 212, the telephone unit corresponding to the configuration including the keypad unit 216 and data memory 220, microcontroller 214 It may be represented by a configuration including a corresponding control unit, a call relay connection unit and a call relay program unit.

3 is a schematic diagram illustrating an internal configuration of a mobile terminal 112 implementing the portable terminal 110.

The mobile terminal 112 as the portable terminal 110 according to the preferred embodiment of the present invention includes a program memory 302, a key input unit 304, an LCD display unit 306, a data storage unit 308, and a mode state storage unit ( 310, wired telephone connection unit 312, subscriber information storage unit 314, microprocessor 316, digital signal processor (DSP) 318, baseband conversion unit 320, speaker 322, microphone 324 ), The antenna 326, the RF signal processor 328, and the like.

The program memory 302 includes a landline telephone menu in the basic menu of the terminal. When the landline telephone menu is selected by key input, the program memory 302 transmits key input data for the telephone number input from the key input unit 304 to the landline telephone connection unit 312. The fixed-line telephone program that is sent out through) is stored.

The key input unit 304 is provided with a numeric button for inputting a telephone number, a character button displaying a character for inputting text data, a selection button for selecting a menu, and the like.

 The LCD display unit 306 displays the overall operating state of the mobile terminal 210 including power usage, radio wave reception intensity, date and time, and displays on the screen that the operating state of the terminal is a wired telephone communication state. .

The data storage unit 308 functions as a data buffer during the operation of the mobile terminal 112, and stores numeric data input from the key input unit 304 or data received from the outside by the mobile terminal 112.

The mode state storage unit 310 stores the operation mode of the current terminal selected by the key input unit 304 as a state flag. In particular, when the wired telephone menu is selected by the key input unit 304, the wired telephone mode is stored as a status flag.

Wired telephone connection unit 312 is made of a connection port for connecting to the wired and wireless terminal 120, and is connected to the wired and wireless terminal 120 through a cable.

Subscriber Identity Module (SIM) 314 stores subscriber terminal registration information. Here, the subscriber station registration information is a unique number given to each subscriber station in the mobile communication network, and the subscriber information storage unit 314 is inserted in the form of a card. Since this is a general content used in a mobile communication network, a description thereof will be omitted.

The microprocessor 316 controls the operation of the mobile terminal 112 with reference to the state flag stored in the mode state storage unit 310. In particular, when the user selects a landline telephone menu among a plurality of basic menus by manipulating the key input unit 304, the microprocessor 316 stores the landline telephone mode as a status flag in the mode state storage unit 310, and sets the set wireline. While controlling the telephone function of the mobile terminal 112 according to the wired telephone program based on the telephone mode, the key input data for the telephone number input from the key input unit 304 through the wired telephone connection unit 312 through the wired or wireless terminal 120 Control the function to send to).

In addition, when the wireless connection request command of the mobile communication network is input by the key input unit 304, the microprocessor 316 transmits the wireless connection request data to the baseband conversion unit 320 (TX DATA).

The DSP 318 performs an audio data processing function of encoding or decoding audio data SPEECH exchanged with the baseband converter 320 and an equalization function for removing noise of a multipath. Digital signal processing processor to perform the. In addition, the DSP 318 receives the received message data RX DATA from the baseband converter 320.

The baseband converter 320 converts signals transmitted and received with the speaker 322, the microphone 324, and the RF signal processor 330 into baseband signals, and functions such as digital-to-analog conversion and analog-digital conversion processing. Do this. Accordingly, the baseband converter 320 converts the audio data received from the DSP 318 into an audio signal and outputs the audio signal to the speaker 322, or converts the audio signal input from the microphone 324 into audio data and converts the audio data into the DSP data. 318).

In addition, the baseband converter 320 converts the transmission message data TX DATA input from the microprocessor 316 into a transmission message signal TXIQ and outputs the signal to the RF signal processor 328 or the RF signal processor 328. The received message signal RXIQ, which is inputted from the RXQ, is converted into the received message data RX DATA and output to the DSP 318. In addition, the baseband converter 320 automatically controls the gain for the power POWER of the RF signal processor 328 (AGC).

 The speaker 322 outputs an audio signal output from the baseband converter 320 as an audible sound, and the microphone 324 converts a user's voice input into an audio signal.

The RF signal processor 328 converts a transmission message signal into a radio frequency (RF) signal and outputs it to the antenna 326, or converts an RF signal applied from the antenna 326 into a reception message signal RXIQ and converts it into baseband. Output to the unit 320. The antenna 326 transmits an RF signal to the air or transmits an RF signal received from the air to the RF signal processor 328.

Next, a preferable operation of the wired call relay system 100 of the portable terminal configured as described above will be described.

4 is a flowchart illustrating a wired call relaying process of a portable terminal according to an embodiment of the present invention.

In the embodiment of the present invention, the mobile terminal 112 is applied to the portable terminal 110, and the wired / wireless combined telephone 124 is applied to the wired / wireless terminal 120.

First, the user connects the cable to the wired telephone connection unit 312 of the mobile terminal 112, and then connects the cable connected to the mobile terminal 112 to the call relay connection 218 of the wired / wireless combined telephone 124.

In the case of the wired / wireless combined telephone 124, a sensing signal is transmitted from the call relay connection 218 to the microcontroller 214. At this time, the detection signal is a signal that is output from the call relay connection unit 218 to the microcontroller 214 is normally applied to the high level signal to the micro-controller 214, the moment the cable is connected to the call relay connection unit 218 The call relay connector 218 causes the low level signal to be output, so that the microcontroller 214 is connected to the mobile terminal 112 by converting the high level signal applied from the call relay connector 218 into a low level signal. Will be detected. Accordingly, the microcontroller 214 of the wired / wireless combined telephone 124 initializes the call relay connection unit 218 according to the call relay program and is in a waiting state waiting for a signal input from the mobile terminal 112 (see FIG. S402).

On the other hand, in the mobile terminal 112, the user operates the key input unit 304 to select a key telephone menu from the basic menu provided by the mobile terminal 112 to enter the key. Accordingly, the microprocessor 316 activates the wired telephone connection unit 312 by executing a wired telephony agent program (S404). Then, the microprocessor 316 displays on the LCD display 306 that the state of the current terminal is in the wired telephone mode.

The user confirms that the mobile terminal 112 is in the wired telephone mode state through the LCD display unit 306 of the mobile terminal 112, inputs the called party's telephone number to make a call by operating the key input unit 304, and confirms. Press (Send). The microprocessor 316 transmits the telephone number data according to the key input to the wired / wireless combined telephone 124 through the wired telephone connection unit 312 (S406).

The wire / wireless combined telephone 124 receives the telephone number data transmitted from the mobile terminal 112 by the microcontroller 214 through the call relay connection unit 218, and receives the received telephone number data through the ADPCM codec unit 212. After the conversion to the DTMF signal, the telephone line interface 210 transmits the signal to the public telephone network (S408).

A public switched telephone network (PBX: not shown) sends an incoming call to the called party's phone based on the DTMF signal for the called party's phone number, and then establishes a telephone call path with the called party's phone when receiving a call from the called party's phone. Then, the voice signal transmitted from the called party's telephone is transmitted to the wired / wireless combined telephone 124 (S410).

The wire / wireless combined telephone 124 transmits a voice signal input from the public telephone network through the telephone line interface unit 210 to the mobile terminal 112 via the call relay connection unit 218 (S412).

The mobile terminal 112 outputs the voice signal received through the wired telephone connection unit 312 to the speaker 322 through the baseband converter 320 (S414).

The user listens to the message of the other party's telephone call through the speaker 322 and inputs a response message to the microphone 324.

Subsequently, the microprocessor 316 of the mobile terminal 112 transmits the user's voice signal input through the microphone 324 to the wired / wireless combined telephone 124 through the baseband converter 320 and the wired telephone connection unit 312. Transmit (S416).

Through this process, the user can perform a wired telephone call through the public telephone network through the mobile terminal 112 through the wired / wireless combined telephone 124.

Meanwhile, in the embodiment of the present invention, the mobile terminal 112 is described as an example of the mobile terminal 110, but a notebook computer having a telephone call program and a wired telephone program using Voice over Internet Protocol (VoIP) technology is provided. The personal computer may be connected to the wired / wireless combined telephone 124 to perform a landline telephone call. In addition, it is possible to provide a user's convenience by applying a wired telephone function connecting a portable terminal to a communication home appliance.

According to an embodiment of the present invention, it is possible to realize a wired call relay system and a method of a portable terminal, which provides a function of connecting a portable terminal such as a mobile terminal or a portable computer to a wired telephone terminal to perform a wired telephone call. have.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, it is possible to perform a landline telephone call using a landline telephone terminal which has not been provided by a conventional portable terminal or a computer.

A user using a portable terminal may move and use a wired telephone network that is cheaper than a mobile communication network.

1 is a configuration diagram schematically showing the configuration of a wired call relay system of a portable terminal according to an embodiment of the present invention;

2 is a schematic view showing the internal configuration of a wired / wireless combined telephone implementing a wired or wireless terminal;

3 is a configuration diagram schematically showing an internal configuration of a mobile terminal implementing a portable terminal;

4 is a flowchart illustrating a wired call relaying process of a portable terminal according to an embodiment of the present invention.

※ Explanation of codes for main parts of drawing

100: wired call relay system 110: portable terminal

112: mobile terminal 114: PDA

116: personal computer (PC) 118: notebook computer

120: wired or wireless terminal 122: landline phone

124: wired and wireless phones 126: fax phone

130: connection 202: wireless handset

204: antenna 206: RF module unit

208: transceiver 210: telephone line interface

212: ADPCM codec section 214: microcontroller

216: keypad 218: call relay connection

220: data memory 222: call relay program unit

224: display unit 302: program memory

304: key input unit 306: LCD display unit

308: data storage 310: mode state storage

312: access information storage unit 314: subscriber information storage unit

316: microprocessor 318: DSP

320: baseband converter 322: speaker

324: microphone 326: antenna

328: RF signal processing unit

Claims (9)

A wired call relay system of a portable terminal for relaying a telephone call by wire by transmitting a call request of the portable terminal to a public switched telephone network (PSTN), A portable terminal having a wired telephony agent program for making a telephone call through the public telephone network, and transmitting a call request according to the wired telephone program to perform a telephone call by wire; And a wired telephony actor program for relaying a telephone call through the public telephone network, and relays the wired telephone call by transmitting a call request from the portable terminal to the public telephone network according to the call relay program. Wired and wireless terminals; And Wireline call relay system of the portable terminal, characterized in that it comprises a connection for connecting the portable terminal and the wired or wireless terminal by wire or wireless. The method of claim 1, The wireline telephone program and the call relay program may be implemented in one of a programming language of a 'C' programming language, an object-oriented 'C ++', and a 'Java' programming language according to the type of the portable terminal or the wired / wireless terminal. Wired call relay system of the portable terminal. The method of claim 1, The connection part wired call relay system of a portable terminal, characterized in that it comprises a cable or a radio frequency device. The method of claim 1, The connection unit includes a Bluetooth module, When the portable terminal is in close proximity to the wired or wireless terminal, the wired call relay system of the portable terminal, characterized in that the wireless communication between the data by recognizing each other through the Bluetooth module. A portable terminal that transmits a call request and performs a telephone call by wire according to a Wired Telephony Agent Program performing a telephone call through a public telephone network; A wired / wireless terminal for relaying the wired telephone call by transmitting a call request transmitted from the portable terminal to the public telephone network according to a Wired Telephony Actor Program; And a method of relaying a call by wire to a portable terminal of a system including a connection unit connecting the portable terminal to the wired and wireless terminal by wire or wirelessly. A first step of detecting that the portable terminal is connected in the wired / wireless terminal and initializing the call relay program; A second step of inputting a telephone number for the telephone call in the portable terminal; A third step of transmitting, by the portable terminal, the telephone number to the wired / wireless terminal according to the wired telephone program; A fourth step of transmitting the telephone number from the wire / wireless terminal to the public telephone network to perform the call request; A fifth step of forming a telephone call path between the portable terminal and the communication terminal having the telephone number via the wired / wireless terminal; And And transmitting a voice signal or a data signal between the portable terminal and the communication terminal having the telephone number to perform a telephone call. The method of claim 5, wherein The wireline telephone program and the call relay program may be implemented in one of a programming language of a 'C' programming language, an object-oriented 'C ++', and a 'Java' programming language according to the type of the portable terminal or the wired / wireless terminal. How to relay a call to a portable terminal by wire. The method of claim 5, wherein In the second step, after the user selects a landline telephone menu among basic menus provided by the mobile terminal by key input, and activates the landline telephone function by executing the landline telephone program according to the selection of the landline telephone menu. Method for relaying a call to a portable terminal, characterized in that for executing a wired. The method of claim 5, wherein When the connection unit is a radio frequency device, the portable terminal transmits the telephone number as a radio frequency signal in the third step, and receives the telephone number as the radio frequency signal from the wired and wireless terminal. How to relay a call by wire. The method of claim 5, wherein When the connection unit is a Bluetooth module, when the portable terminal approaches the wired / wireless terminal within a predetermined distance, the third step is that the telephone number is transmitted as a radio frequency signal from the portable terminal to the wired / wireless terminal. The sixth step may recognize that the communication is possible with each other through the Bluetooth module, and wirelessly transmits and receives a message for the telephone call between the portable terminal and the wired / wireless terminal. .