KR20040015914A - Telephone conversation apparatus and method by bluetooth - Google Patents

Abstract

PURPOSE: A call system using Bluetooth modules and a method therefor are provided to install a Bluetooth module in a wire/wireless phone by using a PSTN and embed a Bluetooth module and a voice dialing function in a plurality of wireless headsets so as to execute communication with the wire/wireless phone in order to achieve the telephone call between the wireless headsets and the third person through the wire/wireless phone. CONSTITUTION: The first telephone terminal(10) is connected with the second telephone terminal(30), a wire/wireless phone, through a PSTN(20). The second telephone terminal(30) executes two-way wireless communication with a plurality of wireless headsets(40a-40n) in a Bluetooth method. The second telephone terminal(30) contains a terminal circuit part, a Bluetooth module, a key input part, a matching table storage part, and an automatic response message transmitting part. The terminal circuit part enables a telephone call with the first telephone terminal(10) through the PSTN. The Bluetooth module transmits telephone conversation contents, received from the first telephone terminal(10), to the wireless headsets(40a-40n) by wireless. Also the Bluetooth module receives telephone conversation contents from the wireless headset(40a-40n) by wireless and transmits the contents to the first telephone terminal(10) through the terminal circuit part. The key input part inputs matching information to identify a called subscriber to the terminal circuit part. The matching table storage part stores the matching information inputted from the key input part. The automatic response message transmitting part transmits an automatic response message according to the control of the terminal circuit part.

Description

Calling device and method using Bluetooth {TELEPHONE CONVERSATION APPARATUS AND METHOD BY BLUETOOTH}

The present invention relates to a call apparatus and method using Bluetooth, and more particularly, to enable a call with a plurality of wireless headsets and a remote counterpart having a Bluetooth function and a voice dialing function through a phone terminal with a built-in Bluetooth module. The present invention relates to a call device and a method using Bluetooth.

Recently, Bluetooth (bluetooth) has been adopted as a short-range wireless communication standard that enables two-way real-time communication without a complicated wire by connecting a computer and a peripheral device, a mobile terminal, a computer, and a home appliance that are located in a short distance. The implemented module is spreading in chip form.

Bluetooth is a wireless data communication technology developed by mobile phone makers and computer makers Ericsson, Nokia, Intel, IBM, and Toshiba in February 1998 to solve the problem of needing too many connection lines for connection between mobile devices. It is a new wireless communication technology aimed at replacing cables based on low cost, low power and wireless.

Such Bluetooth is typically realized relatively easily and inexpensively using a 2.4 GHz Industrial Scientific Medical (ISM) band, with a transmission distance of 10 meters. Adding an amplifier extends the transmission distance to 100 meters. The Bluetooth multiplexing scheme uses time division for low cost and has three synchronous channels and one asynchronous channel. GFSK is used as a modulation method, and circuit and packet switching method is used, and a pico cell is formed to communicate.

Recently, in order to help short-range communication between a mobile phone terminal and another voice or data processing device such as a computer, a Bluetooth module is introduced in advance in a mobile phone terminal.

However, up to now, there is no built-in Bluetooth module in the wired / wireless telephone using the public switched telephone network (PSTN), which is frequently used in homes or businesses.

Therefore, if the user is located in a different location or area away from the wired or wireless telephone, if the user is called on the wired or wireless telephone, the other person who received the call is the user (recipient) who is supposed to receive the call. Since it is necessary to enable the call using a wired or wireless telephone after determining where it is located, there is a problem that is very troublesome, and there is a problem that the productivity of the company is lowered because the trouble for telephone contact is present.

The present invention has been proposed to solve the above-mentioned problems, and the Bluetooth module is embedded in a wired / wireless telephone using a public switched telephone network, and a Bluetooth module and a voice dialing function are embedded in a plurality of wireless headsets so as to be able to communicate with the wired / wireless telephone. It is an object of the present invention to provide a call device using Bluetooth that enables a call with a plurality of wireless headsets and third parties through the wired or wireless telephone.

Another object of the present invention is to embed a Bluetooth module in a wired / wireless telephone using a public switched telephone network, and to embed a Bluetooth module and voice dialing in a plurality of wireless headsets so as to communicate with the wired / wireless telephone. The present invention provides a call method using Bluetooth to enable a call with a third party.

1 is a schematic configuration diagram of a call device using Bluetooth according to an embodiment of the present invention,

2 is a diagram illustrating an internal configuration of a phone terminal in which the Bluetooth module of FIG. 1 is embedded;

3 is an internal configuration diagram of the wireless headset of FIG. 1,

4 is an external perspective view of the wireless headset of FIG. 1;

5 and 6 are flowcharts illustrating a call method using Bluetooth according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: phone terminal 20: PSTN

30: phone terminal 31: terminal circuit portion

32: Bluetooth module 33: Key input unit

34: matching table storage unit 35: automatic response message transmission unit

40a to 40n: wireless headset 41: antenna

42: receiver 43: baseband demodulator

44: amplification unit 45: drive unit

46: speaker 47: microphone

48: amplifier 49: baseband modulator

50: transmitting unit 51: voice dialing recognition unit

52: dialing signal generation unit 53: telephone number storage unit

54: key input unit 55: control unit

60: Bluetooth module

In order to achieve the above object, a call device using Bluetooth according to a preferred embodiment of the present invention includes a terminal circuit unit enabling a telephone call through a public switched telephone network, a first Bluetooth module associated with the terminal circuit unit, and a caller identification. A key input unit for inputting matching information for the user, a matching table storage unit in which the matching information inputted by the key input unit is stored in a table by the terminal circuit unit, and an automatic response message requesting the caller to select a desired recipient. A wired / wireless telephone incorporating an automatic response message transmitter for transmitting under control of the control unit; And a second Bluetooth module for receiving and outputting telephone call contents transmitted from the first Bluetooth module and wirelessly transmitting the telephone call contents of the user to the first Bluetooth module, and voice dialing information of the user from a microphone. And a wireless headset incorporating voice dialing means for generating a corresponding dialing signal and wirelessly transmitting the same to the first Bluetooth module through the second Bluetooth module.

In a call method using Bluetooth according to an embodiment of the present invention, when a call is received through a public switched telephone network to a wired / wireless telephone having a Bluetooth module, a message for selecting a called party in the wired / wireless telephone is selected. A first process of transmitting to the caller through the call; When the called party selection signal from the calling party is received by the wired / wireless telephone through the public switched telephone network, the wired / wireless telephone identifies the corresponding receiver among the plurality of wireless headset users, and then wirelessly connects the called party through the Bluetooth module in the wired / wireless telephone. A second step of wirelessly transmitting a ring tone to a Bluetooth module in the headset; A third step of wirelessly transmitting a telephone call on-mode setting signal of the called party's wireless headset based on the ring tone to the wired / wireless telephone by a Bluetooth method; And a fourth process, wherein the wired / wireless telephone relays a telephone call between the caller and the called party's wireless headset as the call channel between the calling party and the wired / wireless telephone is turned on.

In a call method using Bluetooth according to another embodiment of the present invention, a telephone call on mode for making a call among a plurality of wireless headsets with a built-in Bluetooth module is set so that a corresponding call call on mode setting signal corresponds to the Bluetooth module. A first step of determining, by wireless transmission to the Bluetooth module in the wired / wireless telephone, the wireless telephone on mode setting signal of which wireless headset in the wired / wireless telephone; As the representative number corresponding to the telephone number of the other party to be called is input into the microphone of the wireless headset in which the telephone call on mode is set by voice, the wireless headset generates a dialing signal corresponding to the input representative number. A second step of wirelessly transmitting to a Bluetooth module in the wired / wireless telephone through a Bluetooth module of the wireless communication module; A third step of transmitting, by the wired / wireless telephone, a ring tone to a corresponding counterpart telephone through a public switched telephone network; And a fourth process, wherein the wired / wireless telephone relays a telephone call between the counterpart telephone and a wireless headset in which the telephone call on mode is set as the telephone call channel between the counterpart telephone and the wired / wireless telephone is turned on.

Hereinafter, a call device and method using Bluetooth according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a schematic configuration diagram of a call device using Bluetooth according to an embodiment of the present invention, which includes a telephone terminal 10 and a Bluetooth module with a public switching telephone network (PSTN) 20 interposed therebetween. One telephone terminal (wireless or wireless telephone) 30 is connected. The telephone terminal 30 performs two-way wireless communication with a plurality of wireless headsets 40a to 40n in a Bluetooth manner.

In FIG. 1, only one telephone terminal 10 is illustrated, but a plurality of telephone terminals 10 may be used.

Then, the telephone terminal 30, as shown in Fig. 2, the terminal circuit section 31, the terminal circuit section 31, which enables a telephone call with the telephone terminal 10 through the public switched telephone network 20; And wirelessly transmit the telephone call contents from the telephone terminal 10 to the plurality of wireless headsets 40a to 40n, and wirelessly receive the telephone call contents from the wireless headsets 40a to 40n. The Bluetooth module 32, which is sent to the telephone terminal 10, to the telephone terminal 10, the key input unit 33 for inputting matching information for identifying the caller to the terminal circuit unit 31, and inputted by the key input unit 33. Matching table storage section 34 in which the matching information is tabled and stored by the terminal circuit section 31, and an automatic response message requesting the caller to select the desired called party (i.e., the telephone terminal 10 side). Song under the control of the terminal circuit section 31 And an automatic response message transmission unit 35 for.

Here, the terminal circuit section 31 determines which wireless headset is desired for a telephone call or an ongoing call based on a telephone call on / off mode setting signal from the wireless headsets 40a to 40n inputted through the Bluetooth module 32. You will know if you are about to hang up. The telephone call on / off mode setting signals of the respective wireless headsets 40a to 40n are different from each other.

The matching information for identification of the called party input from the key input unit 33 is information indicating who each wireless headset is.

The key input unit 33 may be constituted by a ten key and a special character button capable of inputting characters provided in the main body of the telephone terminal 30, and separately from the ten key and special character buttons of the telephone terminal 30. It can also be installed in the body.

The answering machine requesting the caller's selection of the desired caller sent from the answering machine message transmitting unit 35 inquires which of the plurality of wireless headsets 40a to 40n, the person using the wireless headset wants to make a telephone call. Message.

On the other hand, each of the wireless headsets 40a to 40n, as shown in Fig. 3, the Bluetooth module 60 which performs two-way wireless communication with the Bluetooth module 32 of the telephone terminal 30 by the Bluetooth wireless communication protocol. ; A speaker 46 which outputs the voice output from the Bluetooth module 60 to the outside; A microphone 47 for collecting a voice of the user of the wireless headset 40; And voice dialing means for generating a dialing signal corresponding to the voice dialing information of the user from the microphone 47 and wirelessly transmitting it to the Bluetooth module 32 of the telephone terminal 30 through the Bluetooth module 60. It is provided.

The Bluetooth module 60 includes: an antenna 41 operable to transmit and receive near field communication signals that can be made using a Bluetooth wireless communication protocol; A receiver 42 electrically connected to the antenna 41; A baseband demodulator 43 for demodulating the near-carrier radio waves from the receiver 42 to extract necessary information signals (i.e., voice signals); An amplifier 44 which amplifies the audio signal output from the baseband demodulator 43; A driving unit 45 for outputting an audio signal output from the amplifying unit 44 through the speaker 46; An amplifier 48 for amplifying the voice signals collected by the microphone 47; A baseband modulator 49 for modulating the voice signal amplified by the amplifier 48 into a short-range carrier radio wave; And a transmitter 50 for transmitting the modulated output signal from the baseband modulator 49 to the Bluetooth module 32 of the telephone terminal 30 via the antenna 41.

The voice dialing means includes a voice dialing recognition unit 51 that recognizes voice dial information of the user of the wireless headset 40 input through the microphone 47, and a voice recognized by the voice dialing recognition unit 51. A dialing signal generation unit 52 for generating a dialing signal corresponding to the dialing information, a telephone number storage unit 53 for storing a plurality of telephone numbers, a key input unit 54 for setting a telephone call on / off mode, and The telephone number corresponding to the voice dialing information in the voice dialing recognition unit 51 is read by the telephone number storage unit 53, and then the dialing signal generator 52 is controlled to dial the number corresponding to the read telephone number. The control unit 55 generates a signal.

The controller 55 controls not only the function of controlling the voice dialing operation of the voice dialing means but also the operation of the Bluetooth module 60 smoothly.

On the other hand, the key input section 54 is installed on one side of each of the wireless headsets 40a to 40n, as shown in Fig. 4, and the key input section 54 has a button for setting the telephone call on / off mode ( 54a); And a button 54b for adjusting the volume of the speaker 46.

The control unit 55 controls the telephone call on / off mode setting signal to be wirelessly transmitted to the telephone terminal 30 when the key input unit 54 sets the telephone call on / off mode. Since is embedded in each wireless headset, the telephone call on / off mode setting signal transmitted wirelessly from the respective wireless headset to the telephone terminal 30 is different from each other.

The maximum number of wireless headsets 40a to 40n shown in Figs. 1 and 2 is appropriate.

Next, a call method using Bluetooth according to an embodiment of the present invention will be described with reference to the flowcharts of FIGS. 5 and 6.

First, with reference to the flowchart of FIG. 5, the case where the telephone terminal 10 becomes a calling side and any one of a plurality of wireless headsets 40a to 40n becomes a receiving side will be described.

When the person using the telephone terminal 10 calls the telephone terminal 30 through the public switched telephone network 20 using the telephone terminal 10 (step S10), the telephone terminal 30 The terminal circuit 31 controls the auto-answer message transmitting unit 35 and asks the telephone terminal 10 for an answering machine (for example, "telephone call with Hong-gil-dong"). If you want to call 1, if you want to make a telephone call with Lee Gil-soo, ... ..., if you want a telephone call with Park Young-cheol n (n is a natural number), such as "," and the like (step S12).

Accordingly, if the user of the telephone terminal 10 that has listened to the auto-answer message enters the number of the person whom he / she wants to make a telephone call to (Yes in step S14), the keyed number is the public switched telephone network 20 Is transmitted to the telephone terminal 30, and the terminal circuit part 31 of the telephone terminal 30 is stored in the matching table storage unit 34 based on the key input number and the called party. Which of the plurality of wireless headsets 40a to 40n is determined (step S16).

Subsequently, the terminal circuit section 31 of the telephone terminal 30 transmits a call alert signal resulting from a telephone call request from the telephone terminal 10 and a signal indicating to which wireless headset the call alert signal should be transmitted to which wireless headset. Send to module 32.

The Bluetooth module 32, which has received the call call signal and a signal indicating to which wireless headset the call call signal should be transmitted, receives the corresponding wireless headset 40a to 40n (assuming 40a for example). The call call signal is wirelessly transmitted to the network (step S18). Accordingly, the call call signal received by the receiver 42 through the antenna 41 of the wireless headset 40a is passed through the baseband demodulator 43, the amplifier 44, the driver 45, and the speaker ( 46).

The user of the wireless headset 40 who has heard the call call signal through the speaker 46 sets the telephone call on mode by operating the button 54a of the key input unit 54 to make a telephone call (step S20). Accordingly, the control unit 55 of the wireless headset 40a generates a signal corresponding to the telephone call on mode setting and transmits the signal through the baseband modulator 49, the transmitter 50, and the antenna 41 to the telephone terminal. Radio transmission to the Bluetooth module 32 of (30). The Bluetooth module 32 sends the received telephone call on-mode signal to the terminal circuit unit 31, and the terminal circuit unit 31 communicates with the telephone terminal 10 via the public switched telephone network 20. Will form.

As a telephone call channel is established between the calling party terminal 10 and the calling party terminal 30 as described above, the call between the calling party terminal 10 and the wireless headset 40a through the telephone terminal 30. A call is made (step S22).

During the telephone call, when the telephone call between the calling party terminal 10 and the wireless headset 40a via the telephone terminal 30 is terminated by the one end of the telephone call (Yes in step S24), that is, The telephone call off mode setting signal (signal generated by the operation of the button 54a of the key input unit 54) in the wireless headset 40a is wirelessly transmitted to the telephone terminal 30 or the calling party telephone terminal ( 10. The telephone exchange channel 20 in the public switched telephone network 20 turns off the telephone call channel between the calling telephone terminal 10 and the receiving telephone terminal 30 so that the receiving telephone terminal 30 is further turned off. The telephone call standby mode is switched without relaying the above-mentioned telephone call contents.

In this case, the case where the telephone terminal 10 becomes the receiving side and any of the wireless headsets 40a to 40n becomes the calling side will be described with reference to the flowchart of FIG. 6.

If a user of one of the wireless headsets 40a to 40n wants to make a call to the telephone terminal 10 side, the button of the key input unit 54 provided in the wireless headset 40a is used. Operate (54a) to set the telephone call on mode. Accordingly, the controller 55 of the wireless headset 40a recognizes that the current telephone call on mode is set and wirelessly transmits the telephone call on mode setting signal to the telephone terminal 30 through the Bluetooth module 60. (Step S50).

The terminal circuit section 31 of the telephone terminal 30 that has received the telephone call on mode setting signal from the wireless headset 40a via the Bluetooth module 32 therein is based on the telephone call on mode setting signal. It is determined that the user of the headset 40a has set the telephone call on mode (step S22).

Subsequently, the user of the wireless headset 40a voices a representative number (e.g., number "1") corresponding to the telephone number of the receiving party (that is, the telephone number of the telephone terminal 10) to which the telephone call is to be made. 47) (step S54). The voice signal input to the microphone 47 is amplified by the amplifier 48, and the voice dialing recognition unit 51 recognizes the representative number voice signal among the amplified and output signals and transmits it to the controller 55. (Step S56). The control unit 55 reads the telephone number corresponding to the representative number voice signal from the telephone number storage unit 53 (step S58), and then controls the dialing signal generation unit 52 to correspond to the retrieved telephone number. Generate a dialing signal. The generated dialing signal is wirelessly transmitted to the Bluetooth module 32 of the telephone terminal 30 through the baseband modulator 49, the transmitter 50, and the antenna 41 under the control of the controller 55 ( Step S60). Here, although the telephone call on mode setting signal is wirelessly transmitted to the telephone terminal 30 in step S50, the dialing signal is wirelessly transmitted to the telephone terminal 30 in step S60, but the dialing signal is transmitted to the telephone terminal 30. It is also possible to have the telephone call on-mode setting signal be transmitted wirelessly when the wireless transmission is to the wireless network.

The Bluetooth module 32 sends the received dialing signal to the terminal circuit section 31, and the terminal circuit section 31 requests the public switched telephone network 20 to make a telephone call connection with the corresponding receiver.

As a result, a call call signal resulting from the telephone call request is sent to the corresponding telephone terminal 10 by the telephone call channel formed by the public switched telephone network 20 (step S62). As the receiver of the telephone terminal 10 on the receiving side is turned off, a telephone call is made between the calling telephone terminal 30 and the receiving telephone terminal 10 (step S64).

During the telephone call, if the telephone call between the receiving telephone terminal 10 and the wireless headset 40a via the telephone terminal 30 is terminated by the telephone call termination intention of either side ("Yes" in step S66), that is, The telephone call off mode setting signal (signal generated by the operation of the button 54a of the key input unit 54) in the wireless headset 40a is wirelessly transmitted to the telephone terminal 30 or the telephone terminal 10 When the telephone exchange channel 20 in the public switched telephone network 20 turns off the telephone call channel between the telephone terminal 10 and the telephone terminal 30, the telephone terminal 30 does not relay any further telephone call contents. Switch to phone call standby mode.

In the above description of the embodiment of FIG. 6, any one of the plurality of wireless headsets 40a to 40n is assumed to be the calling party. However, even when two or more wireless headsets are set to the calling mode and the calling party is set to the calling party. Operation is performed similarly to the description of FIG. 6.

As described in detail above, according to the present invention, it is possible not only to increase work efficiency in the company or the like but also to provide an upgraded wireless network service.

On the other hand, the present invention is not limited to the above-described embodiment, but can be carried out by modifying and modifying within the scope not departing from the gist of the present invention, the technical idea that such modifications and variations are also within the scope of the claims Must see

Claims (11)

A terminal circuit unit for enabling a telephone call through a public switched telephone network, a first Bluetooth module associated with the terminal circuit unit, a key input unit for inputting matching information for identification of a called party, and matching information inputted by the key input unit to the terminal circuit unit A wired / wireless telephone having a matching table storage unit which is stored in a table and stored therein, and an automatic response message transmitter which transmits an automatic response message requesting a caller to select a desired recipient under the control of the terminal circuit unit; And A second Bluetooth module for receiving and outputting telephone call contents transmitted from the first Bluetooth module and wirelessly transmitting the telephone call contents of the user to the first Bluetooth module, and when the voice dialing information of the user is input from the microphone, And a wireless headset incorporating voice dialing means for generating a corresponding dialing signal and wirelessly transmitting it through the second Bluetooth module to the first Bluetooth module. The method of claim 1, The voice dialing means may include a voice dialing recognition unit for recognizing voice dial information input through the microphone, a dialing signal generator for generating a dialing signal corresponding to the voice dialing information recognized by the voice dialing recognition unit, and a plurality of telephones. A phone number storage unit storing a number, a key input unit for setting a telephone call on / off mode, and a telephone number corresponding to the voice dialing information in the voice dialing recognition unit after reading from the phone number storage unit and dialing And a controller configured to control a signal generator to generate a dialing signal corresponding to the read telephone number. The method of claim 1, The first Bluetooth module is a communication device using Bluetooth, characterized in that installed in the main body of the wired and wireless telephone. Transmitting a message for selecting a called party to be called by the wired / wireless telephone to a corresponding calling party when the call is received through a public switched telephone network to a wired / wireless telephone having a Bluetooth module; When the called party selection signal from the calling party is received by the wired / wireless telephone through the public switched telephone network, the wired / wireless telephone identifies the corresponding receiver among the plurality of wireless headset users, and then wirelessly connects the called party through the Bluetooth module in the wired / wireless telephone. A second step of wirelessly transmitting a ring tone to a Bluetooth module in the headset; A third step of wirelessly transmitting a telephone call on-mode setting signal of the called party's wireless headset based on the ring tone to the wired / wireless telephone by a Bluetooth method; And As the telephone call channel between the calling party and the wired / wireless telephone is turned on, the wired / wireless telephone has a fourth process of relaying a telephone call between the calling party and the called party's wireless headset. Call method. The method of claim 4, wherein After the fourth process, if the telephone call off mode setting signal of the called party's wireless headset is inputted to the wired / wireless phone, the wired / wireless phone turns off the telephone call between the calling party and the called party's wireless headset and goes to the telephone call standby mode. Call method using Bluetooth, characterized in that for switching. The method of claim 4, wherein After the fourth process, if the telephone call channel between the calling party and the called party's wired / wireless telephone is turned off in the public switched telephone network by the telephone call off at the calling party, the wired / wireless telephone switches to the telephone calling standby mode. Call method using Bluetooth. The method of claim 4, wherein After the fourth step, the telephone call off mode setting signal of the called party's wireless headset is inputted to the wired / wireless telephone or the telephone call off the calling exchange side and the wired / wireless telephone in the public switched telephone network by the telephone call off at the calling side. When the communication channel is off, the wired / wireless telephone switches to the telephone call standby mode. Among the wireless headsets with a built-in Bluetooth module, a telephone call on mode for making a call is set and a corresponding telephone call on mode setting signal is wirelessly transmitted through the Bluetooth module to a Bluetooth module in a wired or wireless telephone. A first step of determining, by the telephone, which wireless headset the telephone call on mode setting signal is in the wireless headset; As the representative number corresponding to the telephone number of the other party to be called is input into the microphone of the wireless headset in which the telephone call on mode is set by voice, the wireless headset generates a dialing signal corresponding to the input representative number. A second step of wirelessly transmitting to a Bluetooth module in the wired / wireless telephone through a Bluetooth module of the wireless communication module; A third step of transmitting, by the wired / wireless telephone, a ring tone to a corresponding counterpart telephone through a public switched telephone network; And And a fourth process of relaying a telephone call between the counterpart telephone and the wireless headset in which the telephone call on mode is set as the telephone call channel between the counterpart telephone and the wired / wireless telephone is turned on. Call method using Bluetooth. The method of claim 8, After the fourth process, when the telephone call off mode setting signal by the wireless headset having set the telephone call on mode to make the call is inputted to the wired / wireless telephone, the wired / wireless telephone makes a telephone call between the counterpart telephone and the wireless headset. Call off using Bluetooth, characterized in that to switch off the phone call standby mode. The method of claim 8, After the fourth process, when the telephone call channel between the counterpart phone and the wired / wireless phone is turned off in the public switched telephone network by the telephone call off of the counterpart phone, the wired / wireless phone switches to the telephone call standby mode. Call method using Bluetooth. The method of claim 8, The telephone call off mode setting signal by the wireless headset which has set the telephone call on mode to make the call after the fourth step is inputted to the wired / wireless telephone or by the telephone call off at the counterpart telephone. Off the telephone call channel between the counterpart telephone and the wired / wireless telephone, the wired / wireless telephone switches to a telephone call standby mode.