JP2000295332A - Radio telephone system with built-in tone dialer and tone dial communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio telephone system with built-in tone dialer and a tone dial communicating method which does not need a dial input to a fixed telephone by converting a telephone number stored in a device into tone dial sound to transmit it to the transmitting part of the fixed telephone. SOLUTION: A portable telephone set 12 is provided with a tone dialer 13 which converts a telephone number stored in a device into tone dial sound and transmits it from a receiver part 5, and when transmission is performed to a telephone number stored in the device from a fixed telephone, the part 5 of the set 12 is made close to the mouthpiece of the fixed telephone, and transmission can be performed by using the tone dial sound sent from the part 5 of the set 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone dialer technology for a radio telephone, and more particularly, to a telephone number stored in a device which is converted into a tone dial tone and transmitted to a transmitting section of a fixed telephone. The present invention relates to a wireless telephone device with a built-in tone dialer that does not require dial input to a telephone and a tone dial communication method.

[0002]

2. Description of the Related Art A conventional portable telephone will be described with reference to FIG. FIG. 3 is a functional block diagram for explaining a conventional mobile phone. The conventional mobile phone P12 has a radio unit P
1, a control unit P2, a data storage unit P3, a display unit P4, a receiving unit P5, a transmitting unit P6, and an operation key unit P7.

Next, each section of the conventional portable telephone P12 will be specifically described. The radio unit P1 modulates the transmission data output from the control unit P2 and transmits the modulated data as radio waves.
In addition, it receives a radio wave and outputs it to the control unit P2 as demodulated reception data. The display unit P4 displays information on the mobile phone P12, for example, a telephone number to be called, a battery state,
This part displays various settings of the mobile phone P12. The receiver P5 outputs the voice of the other party and the ringing tone. The transmitting section P6 is connected to the mobile phone P1.
The voice of the second user is input.

The operation key section P7 is used to turn on / off the power,
Input of telephone number to be called, switching between on-hook state and off-hook state of mobile phone P12, mobile phone P12
Where key operations such as various settings are accepted,
A power key P8, a numeric keypad P9, a hook key P10, and a function key P11 are provided.

The power key P8 is a key for turning on / off the power of the portable telephone P12. Specifically, when the power key P8 is pressed while the power is off, power is supplied to the mobile phone P12. When the power key P8 is pressed while the power is being supplied, the power supply to the mobile phone P12 is stopped. The numeric keypad P9 is used to input a telephone number to be called.

The hook key P10 is a key for switching the portable telephone P12 between an on-hook state and an off-hook state. Specifically, when the hook key P10 is pressed in the standby state (on-hook state), the control unit P2 switches to the off-hook state, and when the hook key P10 is pressed in the off-hook state, the control unit P2 switches to the on-hook state. It has become. The hook key P10 may be provided with an on-hook key P10 and an off-hook key P10 separately.

[0007] The function key P11 is a key for performing various settings of the mobile phone P12, for example, adjusting a ring tone, adjusting a clock, searching a memory dial, and the like. Various settings of the mobile phone P12 are realized by pressing the function key P11 and the numeric keypad P9 in combination.

The data storage section P3 is where the telephone number to be called is registered. The user of the mobile phone can register the telephone number to be stored by inputting it from the operation key section P7. In addition, a telephone number registered in the data storage unit P3 can be selected and transmitted as needed.

The control unit P2 is responsible for outgoing call control, incoming call control and call control. Under the execution of the transmission control, when the telephone number to be called is input from the numeric keypad P9 of the operation key unit P7 and the hook key P10 is input, the telephone number to be called is output to the radio unit P1 to make a call. Under the execution of the incoming call control, when a call is received, a call instruction is issued to the display unit P4, and when the hook key P10 of the operation key unit P7 is depressed to set an off-hook state, a call state is established.

When the call control is executed, the radio unit P1
When the reception data demodulated in step (1) is input, the reception data is output to the reception unit P5, and a process of outputting the voice from the other party of the call is performed. A process of outputting voice data to the unit P1 and transmitting voice to the other party of the call is performed.

Next, the operation of the conventional portable telephone P12 will be described. In the conventional mobile phone P12, when the radio unit P1 receives a call at the time of an incoming call, the control unit P2 displays the display unit P2.
4, a call is displayed, and the hook key P is set by the user.
When the button 10 is depressed, the control unit P2 performs a call control, and the telephone enters a call state. Thereafter, when the user presses the hook key P10 at the end of the call, the control unit P2 enters the on-hook state, and the mobile phone P12 enters a standby state.

At the time of transmission, the numeric keypad P of the operation key section P7 is used.
When the telephone number is input from the control unit 9, the control unit P2 stores the telephone number in an internal storage unit (not shown). When the hook key P10 is subsequently pressed, the control unit P2 enters the off-hook state and stores the stored telephone number in the wireless unit P1. Output and send. Also hook key P
When the telephone number is input from the numeric keypad P9 of the operation key unit P7 by pressing the button 10 to off-hook state, the wireless unit P1
And send it to

Examples of such prior art include, for example, JP-A-10-233832 (first prior art), JP-A-10-56503 (second prior art), and
No. 149150 (third prior art). That is, the first prior art is a wireless telephone method of making a call using a wireless telephone device including a master unit connected to a telephone line and a slave unit performing wireless communication with the master unit. A PB receiving step of receiving and analyzing the PB sound;
A transmitting step of transmitting the dialed number analyzed by the PB receiving step to the master unit; and a dialing step of receiving the dialed number notified from the slave unit to the master unit and dialing a telephone line. When dialing using the tone dialer function, the PB tone itself does not have to pass through the wireless communication system, so that there is no dial missing or erroneous dialing effect.

[0014] The second prior art has a portable telephone without a numeric keypad and a DTMF tone dialer. When the portable telephone is in an off-hook state, DTMF sound output from the DTMF tone dialer is transmitted by the portable telephone. There is disclosed a mobile phone device for transmitting a signal by inputting from a device, which can reduce the size of the mobile phone and improve portability.

[0015] The third prior art includes an audio input / output terminal for inputting / outputting a pseudo audio signal output from an information output terminal, a pseudo audio signal detecting means for detecting a pseudo audio signal, and a pseudo audio signal detecting means. The information output terminal device comprises: a destination decoding means for decoding the destination telephone number information from the detected pseudo audio signal; and a communication control means for wirelessly transmitting the destination telephone number information decoded by the destination decoding means. Receive the output pseudo audio signal via the audio input / output terminal,
The pseudo audio signal is detected by the pseudo audio signal detection means,
Since the destination telephone number information is decoded from the pseudo voice signal by the destination decoding means and the destination telephone number information is wirelessly transmitted by the communication control means, transmission or communication can be performed only by operating the information output terminal device. An effect that a remarkable improvement in the performance can be realized is disclosed.

[0016]

However, when the telephone number registered in the portable telephone P12 is to be called by a fixed telephone, the prior art displays the telephone number to be called on the display section P4 of the portable telephone P12. Display section P
You have to dial a landline while watching 4.
There is a problem that there is a possibility that an input error of the telephone number occurs, and there is a problem that the operation must be performed by pressing the dials corresponding to the number of digits of the telephone number, which is a troublesome operation. The reason is that the voice quality of mobile phones is generally less clear and harder to hear than fixed phones, and call charges may be higher than fixed phones depending on the time of day. Since the telephone and the mobile phone are often used separately, in the conventional mobile phone P12, when the telephone number registered in the mobile phone P12 is to be called by a fixed telephone, the telephone number to be called on the display P4 of the mobile phone P12 Is displayed and dialing a fixed telephone is performed while looking at the display section P4.

The present invention has been made in view of such a problem, and an object of the present invention is to convert a telephone number stored in an apparatus into a tone dial sound and transmit the telephone number to a telephone transmission section of a fixed telephone. An object of the present invention is to provide a wireless telephone device with a built-in tone dialer and a tone dial communication method which eliminates the need for dial input to a fixed telephone by transmitting.

[0018]

The gist of the present invention resides in that a telephone number stored in an apparatus is converted into a tone dial sound and transmitted to a mouthpiece of a fixed telephone to fix the telephone number. A wireless telephone device with a built-in tone dialer that eliminates the need for dial input to a telephone, comprising: a receiver for outputting the voice of a call partner and a ringing tone; and converting a telephone number stored in the device into a tone dial sound. And a tone dialer for transmitting via a receiver. According to another aspect of the present invention, there is provided a control unit for performing outgoing control, incoming call control and call control, and modulating transmission data output from the control unit to transmit as a radio wave and receive a radio wave. A radio unit for outputting to the control unit as received data after demodulation, a telephone number to be called, a battery state,
A display unit for displaying device information including various settings, a transmitting unit for inputting a user's voice, a power key for receiving power ON / OFF, a numeric keypad for receiving input of a telephone number to be called, an on-hook state and an off-hook state A hook key for receiving switching, an operation key unit having a function key for receiving key operations such as various settings, and a telephone number to be stored are input and registered from the operation key unit, and a registered telephone number is selected. And a data storage unit for transmitting a call. The gist of claim 3 of the present invention is that the control unit inputs a telephone number to be called from the numeric keypad of the operation key unit and executes the hook key when the hook key is input under execution of the transmission control. A number is output to the wireless unit to make a call, and when a call is received under execution of the incoming call control, a call instruction is issued to the display unit, and the operation key unit goes to an off-hook state in response to pressing of the hook key. 3. The wireless telephone device with a built-in tone dialer according to claim 2, wherein: The gist of claim 4 of the present invention is that the tone dialer converts a telephone number stored in the data storage unit or a telephone number input from the numeric keypad into a DTMF signal tone and outputs the DTMF signal tone. 3. The wireless telephone device with a built-in tone dialer according to claim 2, wherein: According to another aspect of the present invention, the receiver is configured to output the voice of the other party of the call and to input the DTMF signal tone of the telephone number output from the tone dialer. 3. The wireless telephone device with a built-in tone dialer according to claim 2. Claim 6 of the present invention
Has a tone dial tone transmission key that outputs the telephone number to the control unit when a telephone number to be called is input from the numeric keypad, and the telephone number given from the tone dial tone transmission key is The radio telephone device with a built-in tone dialer according to any one of claims 2 to 5, wherein the radio telephone device is configured to be output to the tone dialer, converted into a DTMF signal tone, and output to the receiver. Exists. The gist of claim 7 of the present invention is that the telephone number stored in the device is converted into a tone dial sound and transmitted to the transmitting section of the fixed telephone, thereby eliminating the need for dial input to the fixed telephone. And a tone dialing control for converting a telephone number stored in the device into a tone dial tone and transmitting the tone number through the receiving step. And a step of communicating with the tone dial. The gist of claim 8 of the present invention is a control step of performing outgoing control, incoming call control, and call control, and modulating transmission data output from the control step to transmit as a radio wave and receive a radio wave. A wireless control step of outputting to the control step as received data after demodulation, a display control step of displaying device information including a telephone number to be called, a battery state, and various settings, and a transmission control of inputting a user's voice. Process and power supply O
A key control for receiving N / OFF, a key control for receiving an input of a telephone number to be called, a key control for receiving switching between an on-hook state and an off-hook state, an operation key control step for performing a key control for receiving a key operation such as various settings, and the like. 8. The tone dial communication according to claim 7, further comprising a data storage control step of inputting and registering a desired telephone number from the operation key control step, and selecting and transmitting the registered telephone number. Be in the way. The gist of the ninth aspect of the present invention is that the control step is to execute a call when the telephone number to be called from the numeric keypad of the operation key control step is input and the hook key is input under execution of transmission control. A telephone number is output to the wireless control step to make a call, and when a call is received under execution of the incoming call control, a call instruction is given to the display control step, and an off-hook state is set according to the operation key control step. The tone dial communication method according to claim 8, further comprising a step of performing a transition. The gist of claim 10 of the present invention is that the tone dial control step converts a telephone number stored in the data storage control step or a telephone number input from the operation key control step into a DTMF signal tone. The tone dial communication method according to claim 8, further comprising a step of converting and outputting. Claim 1 of the present invention
The gist of claim 1, wherein the receiving step includes a step of outputting a voice of the other party of the call and a step of inputting a DTMF signal tone of a telephone number output from the tone dial control step. 8. The tone dial communication method according to item 8. The gist of the twelfth aspect of the present invention is that a tone dial sound transmission control step of outputting the telephone number to the control step when a telephone number to be called is input from the operation key control step, A step of outputting a telephone number provided from a sound transmission control step to the tone dial control step, converting the telephone number into a DTMF signal sound, and outputting the DTMF signal sound to the reception step. In the tone dial communication method described in the section.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A feature of each embodiment described below is that a radio telephone device with a built-in tone dialer, such as a portable telephone, a car telephone, a PHS telephone, or a pager, used for mobile communication. When a call is made from a fixed telephone to the telephone number stored in the telephone number, the call can be transmitted by a simple operation using a wireless telephone device with a built-in tone dialer. In the following embodiments, description will be made assuming a mobile phone as the wireless telephone device 12 with a built-in tone dialer.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
FIG. 6 is a functional block diagram for explaining the mobile phone 12 according to the embodiment. Referring to FIG. 1, a mobile phone 12 according to the present embodiment includes a wireless unit 1, a control unit 2, a data storage unit 3, a display unit 4, a receiver unit 5, a transmitter unit 6, an operation key unit 7, a tone dialer 13, It has. The tone dialer 13 converts the telephone number stored in the device into a tone dial tone and sends it out of the receiver 5. Therefore, when calling a telephone number stored in the mobile phone 12 from a fixed telephone, the receiver 5 of the mobile telephone 12 is brought closer to the transmitter of the fixed telephone and the tone dial sound transmitted from the mobile telephone 12 is used. It is possible to send. In this manner, in the present embodiment, since the tone dial sound is transmitted from the mobile phone 12, when calling the telephone number stored in the mobile phone 12 from the fixed telephone, it is not necessary to bother dialing from the fixed telephone. You can easily make calls.

Next, each part of the portable telephone 12 will be described in detail with reference to FIG. 1. The radio unit 1, the data storage unit 3, the display unit 4 and the transmission unit 6 of the portable telephone 12 The description is omitted here because it is the same.

The tone dialer 13 is provided in the data storage 3
DTMF (dual tone mu), or the phone number stored in the
lti-frequency) convert the signal sound and output. The receiver 5 outputs the voice of the other party in the same manner as in the related art, and also receives the DTMF signal tone of the telephone number output from the tone dialer 13 as a characteristic part of the present invention. The operation key unit 7 includes a tone dial sound transmission key 14 in addition to a power key 8, a numeric keypad 9, a hook key 10, and a function key 11, as in a conventional mobile phone. The power key 8, the numeric keypad 9, the hook key 10, and the function key 11 are completely the same as those in the related art, and thus description thereof is omitted here. The tone dial tone transmission key 14 is pressed when it is desired to convert a telephone number into a tone dial tone. The control unit 2 performs outgoing call control, incoming call control, and call control as in the related art,
It performs tone dial sound output control. The outgoing call control, incoming call control, and call control are exactly the same as the control of the conventional mobile phone, and the description is omitted here. In the tone dial sound output control in the control unit 2,
As in the prior art, a telephone number to be called is input from the numeric keypad 9 of the operation key unit 7 and the telephone number is output to the control unit 2 by pressing the tone dial sound transmission key 14. The telephone number is output to the tone dialer 13, converted into a DTMF signal tone, and output to the receiver 5. The DTMF signal sound output to the receiver 5 is output from the receiver 5.

Next, as an operation of the portable telephone 12 (tone dial communication method), the operation of tone dial sound output control, which is a characteristic part of the portable telephone 12 of the present invention, will be described with reference to FIG. Here, the tone dial sound output control is a function used when a user calls a telephone number stored in the mobile phone 12 from a fixed telephone.

In the portable telephone 12 according to the present embodiment, when a request for searching for a telephone number to be called is made from the user using the operation key unit 7, the control unit 2 transmits the telephone number registered in the data storage unit 3 to the telephone. The number is displayed on the display unit 4. In response to this, the user selects a telephone number to call while watching the telephone number displayed on the display unit 4. Thereafter, when the user presses the tone dial sound transmission key 14 of the operation key unit 7 while the telephone number to be called is displayed on the display unit 4, the control unit 2 performs tone dial transmission control in response to this. The mobile phone 12 outputs the telephone number displayed on the display unit 4 to the tone dialer 13. Thereafter, when the telephone number is input, the tone dialer 13 converts the telephone number into a DTMF signal sound and outputs the DTMF signal sound to the receiver 5, and the receiver 5 sends the DTMF signal sound to the outside in response to this. Further, when the user brings the receiver 5 of the mobile phone 12 closer to the transmitter (not shown) of the fixed telephone in the off-hook state, the DTMF signal sound transmitted from the receiver 5 of the mobile phone 12 is transmitted to the fixed telephone. Receive. As a result, the fixed telephone receiving the DTMF signal tone can make a call without pressing the telephone number to be called.

As described above, the first embodiment has the following advantages. First, the first effect is that the telephone number registered in the mobile phone 12 can be output from the receiver 5 as a tone dial sound, so that the telephone number registered in the mobile phone 12 can be transmitted from a fixed telephone. In addition, it is not necessary to input a telephone number one by one, so that operability is improved, and it is only necessary to bring the receiver 5 of the mobile phone 12 closer to the transmitter of the fixed telephone. As a result, input errors can be eliminated. The second effect is that if a necessary telephone number is registered in the mobile phone 12, it is possible to easily make a call to the mobile phone 12 and a fixed telephone. This eliminates the need for double management of telephone numbers such as telephone number registration.

(Second Embodiment) The second embodiment of the present invention has the same basic configuration as that of the first embodiment, except that a mobile phone 12 calls a telephone number. Is also devised. FIG. 2 shows a second embodiment of the present invention.
FIG. 6 is a functional block diagram for explaining the mobile phone 12 according to the embodiment. In the present embodiment, the tone dialer 13 is connected to the receiving unit 5 and the transmitting unit 6, and a tone dial sound output from a device other than the mobile phone 12 is taken in from the transmitting unit 6. The feature is that the sound is output to the tone dialer 13.
The tone dialer 13 converts the tone dial sound into a telephone number handled by the mobile phone 12 and outputs the telephone number to the control unit 2, and the control unit 2 outputs the signal to the wireless unit 1 for transmission.

As described above, in the present embodiment, by connecting the tone dialer 13 to the receiver 5 and the transmitter 6, the telephone number registered in a device other than the cellular phone 12 is transmitted from the cellular phone 12. As a result, there is no need to input a telephone number even when calling, so that operability is improved and an input error can be prevented.

It is to be noted that the present invention is not limited to the above embodiments, and each embodiment can be appropriately changed within the scope of the technical idea of the present invention. Further, the number, position, shape, and the like of the constituent members are not limited to the above-described embodiment, and can be set to numbers, positions, shapes, and the like suitable for carrying out the present invention. In each drawing, the same components are denoted by the same reference numerals.

[0029]

Since the present invention is configured as described above, the following effects can be obtained. First, the first effect is that the telephone number registered in the mobile phone can be output from the receiver as a tone dial sound. This eliminates the need to input numbers one by one, improves operability, and improves the operability by merely bringing the receiver of the mobile phone closer to the transmitter of the fixed telephone. As a result, input errors can be eliminated. The second effect is that if a necessary telephone number is registered in the mobile phone, it is possible to easily make a call to the mobile phone and the landline telephone. This eliminates the need for double management of telephone numbers such as registration.

[Brief description of the drawings]

FIG. 1 is a functional block diagram illustrating a wireless telephone device with a built-in tone dialer according to a first embodiment of the present invention.

FIG. 2 is a functional block diagram illustrating a wireless telephone device with a built-in tone dialer according to a second embodiment of the present invention.

FIG. 3 is a functional block diagram for explaining a conventional mobile phone.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Radio | wireless part 2 ... Control part 3 ... Data storage part 4 ... Display part 5 ... Reception part 6 ... Transmission part 7 ... Operation key part 8 ... Power key 9 ... Numeric keypad 10 ... Hook key 11 ... Function key 12 ... Mobile phone ( 13: Tone dialer 14: Tone dial tone transmission key

Claims (12)

[Claims] 1. A wireless telephone device with a built-in tone dialer, which converts a telephone number stored in the device into a tone dial tone and sends it to a mouthpiece of a fixed telephone so that dial input to the fixed telephone is unnecessary. A receiving unit that outputs the voice of the other party and a ringing tone; and a tone dialer that converts a telephone number stored in the device into a tone dial tone and sends out the tone number via the receiving unit. Wireless telephone device with built-in tone dialer. 2. A control unit for performing transmission control, reception control, and call control, modulating transmission data output from the control unit, transmitting the modulated data as a radio wave, receiving the radio wave, and demodulating the received data as demodulated reception data. A radio unit to output to the unit, a display unit to display device information including a telephone number to be called, a battery status, and various settings; a transmission unit to input user's voice; and a power supply to receive power ON / OFF An operation key unit including a key, a numeric keypad for receiving input of a telephone number to be called, a hook key for receiving switching between an on-hook state and an off-hook state, a function key for receiving key operations such as various settings, and the operation key unit for storing a telephone number to be stored And a data storage unit for selecting and registering a registered telephone number and making a call. To claim 1
A wireless telephone device with a built-in tone dialer according to item 1. 3. The control unit outputs a telephone number to be called to the wireless unit when the telephone key to be called is inputted from the numeric keypad of the operation key unit and the hook key is inputted under execution of the transmission control. When a call is received under execution of incoming call control, a call instruction is issued to the display unit, and a transition to an off-hook state is performed in response to pressing of the hook key of the operation key unit. The wireless telephone device with a built-in tone dialer according to claim 2, wherein: 4. The tone dialer is configured to convert a telephone number stored in the data storage unit or a telephone number input from the numeric keypad into a DTMF signal tone and output the same. The wireless telephone device with a built-in tone dialer according to claim 2. 5. The receiver according to claim 2, wherein the receiver outputs voice of the other party of the call and inputs a DTMF signal tone of a telephone number output from the tone dialer. A wireless telephone device with a built-in tone dialer according to item 1. 6. A tone dial tone transmission key for outputting a telephone number to the control unit when a telephone number to be called is input from the numeric keypad, wherein the telephone number given from the tone dial tone transmission key is The radio telephone device with a built-in tone dialer according to any one of claims 2 to 5, wherein the radio telephone device is configured to be output to a tone dialer, converted into a DTMF signal tone, and output to the receiver. 7. A tone dial communication method in which a telephone number stored in an apparatus is converted into a tone dial tone and transmitted to a transmitting section of a fixed telephone so that dial input to the fixed telephone is not required. A receiving step of outputting a voice of the other party and a ringing tone, and a tone dial controlling step of converting a telephone number stored in the apparatus into a tone dial sound and transmitting the tone number through the receiving step. Tone dial communication method. 8. A control step of performing transmission control, termination control and call control, and modulating the transmission data output from the control step, transmitting the modulated data as a radio wave, receiving the radio wave and demodulating the data as demodulated reception data. A wireless control step for outputting to the process, a display control step for displaying device information including a telephone number to be called, a battery state, and various settings; a transmission control step for inputting a user's voice; and power ON / OFF. An operation key control step of performing key control for receiving key control for receiving an input of a telephone number to be called, a key control for receiving switching between an on-hook state and an off-hook state, and a key control for receiving a key operation such as various settings, and a telephone number to be stored. Is entered from the operation key control step and registered, and the registered telephone number is selected and transmitted. Tone dialing communication method according to claim 7, characterized in that a control process. 9. The control step includes inputting a telephone number to be called from the numeric keypad of the operation key control step under execution of transmission control, and inputting a telephone number to be called when the hook key is input to the wireless control step. Output and transmit, perform a call instruction to the display control step when receiving a call under the execution of the incoming control,
9. The tone dial communication method according to claim 8, further comprising a step of making a transition to an off-hook state according to the operation key control step. 10. The tone dial control step includes a step of setting a telephone number stored in the data storage control step or a telephone number input from the operation key control step to a DTM.
9. The method according to claim 8, further comprising a step of converting the signal into an F signal sound and outputting the signal. 11. The method according to claim 8, wherein the receiving step includes a step of outputting a voice of the other party of the call and a step of inputting a DTMF signal tone of a telephone number output from the tone dial control step. The described tone dial communication method. 12. A tone dial sound transmission control step of outputting a telephone number to the control step when a telephone number to be called is input from the operation key control step, and a telephone provided from the tone dial sound transmission control step. The number is output to the tone dial control step and the DTMF
Converting the signal to a signal sound and outputting the signal sound to the receiving step. 12. The method according to claim 10, further comprising the steps of: