JP3478979B2 - A communication method using a communication terminal device that can change the communication mode during an incoming call or during communication - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication mode for voice communication or data communication, whether wired or wireless, analog or digital, when a call is received at a communication terminal device or during communication between communication terminal devices. Belongs to the technical field related to.

[0002]

2. Description of the Related Art Conventionally, a communication mode between communication terminal devices, that is, voice communication or data communication is limited to a communication mode specified by a calling communication terminal device, and it is not possible to switch the communication mode at the time of incoming call or during communication. could not.

[0003]

However, in the conventional method as described above, when it is desired to switch to data communication during voice communication, or to switch to voice communication during data communication, it is necessary to terminate the communication and then switch. The procedure was complicated because a new call had to be made in the form of communication.

An object of the present invention is to make a request for changing the communication form at the will of the receiving side at the time of incoming call and at least one will at the time of communication so that the communication form can be changed by the consent of the communication partner.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is such that, when an incoming call arrives, the called party responds and enters a communication state, and then a switching request notification or digital data within the voice frequency band is made. In the communication state, one of the sending side and the receiving side sends a switching request notification within the voice frequency band or a switching request notification by digital data to the other side so that the communication partner can agree. Below, switch between voice communication and data communication
In the communication method, switching that received the switching request notification
When the request receiver recognizes the switching request notification, it switches
Sends a request recognition notification to the request sender, and switches to a switchable state.
If there is, or if you agree to switch, switchable notification
To the request communication side, and after the switching preparations are completed, the switching permission
The feature is that the knowledge is sent to the request transmission side .

According to the present invention, it is possible to switch the communication mode when receiving a call or during communication.

Further , according to the present invention , the request transmission side is switched off.
The receiving side receives the replacement request notification and has a switching function.
Can be confirmed .

Further, according to the present invention, the request transmitting side is in a switchable state, or the other party agrees to switch.
Since it can be confirmed that the request transmission side is useless switching
It can be avoided that the request receiving side is ready to switch.
Avoid the inconvenience that the request sender executes switching before
You can kick.

[0009] communication method using a communication terminal device capable of changing the communication mode into the incoming call or communication according to claim 2 of the present invention is the invention according to claim 1, SWITCHING request
Switch request sender that received the switch notification from the receiver
Is allowed to switch within a certain period of time after receiving the switch notification
When the notification cannot be received, the switching process is stopped .

[0011] According to the present invention, Shin side request transmission switching request
It is useless because you can know that switching cannot be done due to the receiving side
Ru be avoided Do not wait.

[0011] communication method using a communication terminal apparatus that can change the incoming call or communication mode during communication according to claim 3 of the present invention is the invention according to claim 1, wherein the switch
Switching request sender that completed switching preparations after receiving the permission notification
Is characterized by transmitting a switching execution notification to the switching request notification receiving side .

According to the present invention, the switching request side and the request reception
It is necessary for both sides to issue a switching execution notification that switching is ready.
Can notify the requester / receiver .

[0013] communication method using a communication terminal device capable of changing the communication mode into the incoming call or communication according to claim 4 of the present invention is the invention according to claim 3, SWITCHING request
After sending the switching execution notification, the sending side
After receiving the switching execution notification, switch the communication mode respectively.
It is characterized by executing .

According to the present invention, the switching request sending side , the switching
Request receiving side Ru can switch synchronously.

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[0023]

[0024]

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 1 is an analog communication terminal device, 2 is a digital communication terminal device, 3 is an analog wireless terminal device, 4 is a digital wireless terminal device, and an analog terminal device 1 and a digital terminal device 2 are shown. Is connected to the wired public communication network 5.

An analog wireless communication network 6 is registered with the analog wireless terminal device 3 and is wirelessly connected to the analog wireless terminal device 3 via an analog wireless base station.

The analog wireless communication network 6 is connected to the wired public communication network 5 and can be interconnected with the digital wireless communication network 7, the analog terminal device 1 and the digital terminal device 2.

Reference numeral 7 denotes a digital wireless communication network in which the digital wireless terminal device 4 is registered and which is wirelessly connected to the digital wireless terminal device 4 via a digital wireless base station.

The digital wireless communication network 7 is also connected to the wired public communication network 5 and can be interconnected with the analog wireless communication network 6, the analog terminal device 1 and the digital terminal device 2.

There are usually a plurality of analog terminal devices 1, digital terminal devices 2, analog wireless terminal devices 3, and digital wireless terminal devices 4, and they can be freely connected by the wired public communication network 5.

FIG. 2 is a block diagram showing a part of the four types of terminal devices related to the present invention. This part is common to the four types of terminal devices at the block diagram level.

In the figure, 8 is a line interface unit connected to a communication line, 9 is a switching control signal transmitting / receiving unit, and 10 is a switching control signal transmitting / receiving unit.
Is a transmission / reception signal conversion unit, 11 is a voice communication circuit unit, and 12 is a data communication circuit unit.

Reference numeral 13 denotes a central processing unit (CPU) (hereinafter, abbreviated as CPU) which controls the whole of FIG. 2, reference numeral 14 denotes a read-only memory (ROM) for storing programs and the like,
A random access memory (RA) 15 is used by the CPU 13 to store programs and data during operation.
M).

Reference numeral 16 is a key interface unit, 17 is a button key and a hook switch, 18 is a built-in display, 19 is a microphone and a speaker (or a handset and a speaker) , and 20 is a changeover switch unit for voice communication and digital communication.

According to the sequence diagram of FIG. 3, when a call is received, the callee switches from voice call to analog data communication.
The switching procedure will be described.

For convenience of description, when a voice call is received from the wired analog terminal device 1 to another wired analog terminal device 1 '(the device on the receiving side is marked with' for clarity of explanation), It is assumed that the wired analog terminal device 1'on the receiving side switches to analog data communication.

The switching sequence described below is for switching communication between the same attributes of the wired digital terminal device 2, the analog wireless terminal device 3, and the digital wireless terminal device 4, and between the terminal devices having different attributes including the wired analog terminal device 1. The same applies to the switching of communication.

When a voice call is transmitted from the analog terminal device 1 on the calling side to the analog terminal device 1'on the receiving side (step 101), the line interface unit 8 '(FIG. 2) of the analog terminal device 1'on the receiving side receives the call. Then, the ringer sound is emitted from the speaker 19 'under the control of the CPU 13' (step 102).

It is judged by the ringer's ringing whether or not it is off-hook (step 103), and the button key (or hook switch) 1 is pressed by the analog terminal device 1'on the receiving side.
7'off-hook and responds, the transmission / reception signal conversion unit 10 ', the changeover switch 20', the voice communication circuit unit 11 ',
A voice call is made by a normal process on the path of the microphone and the speaker (or handset) 19 '(step 10).
4).

While not off-hook, it is judged whether or not the user of the receiving-side analog terminal device 1'rejects a voice call and requests analog data communication, and whether or not there is a request for switching the communication form (step 105), and switching is performed. If there is no request, it goes off-hook or waits for a switching request.

When there is a request for switching to analog data communication, the preset button key 17 'is operated.

The operation of this button key 17 'is recognized by the CPU 13' via the key interface section 16 ', and an off-hook signal is sent out via the switching control signal transmitting / receiving section 9' (step 106) to once establish a communication path. To make a voice call (step 107).

Upon confirming that the voice call state has been established, the CPU 13 'sends a switching request notification to the calling side analog terminal device 1 via the switching control signal transmitting / receiving section 9' (step 108).

The CPU 13 determines whether or not the calling side analog terminal device 1 is a terminal device capable of receiving and recognizing the switching request notification (step 109). The CPU 13 sends a switching request recognition notice to the terminating side analog terminal device 1 ′ via the switching control signal transmitting / receiving unit 9 (step 11).
0).

Whether or not the user of the calling side analog terminal device 1 responds to the switching request is determined by displaying it on the built-in display 18 or by notifying the user by making an announcement through the speaker 19 (step 11).
3).

CPU 1 of the analog terminal device 1'on the receiving side
The state 3'is in a state of waiting for a switch disable notification or a switch enable notification by determining the confirmation of the reception of the switch request recognition notification via the switch control signal transmitting / receiving unit 9 '(step 111) and confirming the switch request recognition notification. become.

CPU 1 of the analog terminal device 1'on the receiving side
3 ′ starts the time monitoring from the transmission of the switching request notification, and when the switching request recognition notification from the calling side analog terminal device 1 is not received within the specified time, that is, the calling side analog terminal device 1 receives the switching request notification. If the terminal device cannot be switched, it is determined that the switching request cannot be made because the switching request cannot be recognized (step 112).

The speaker 1 indicates that the communication cannot be switched.
An announcement is made from 9 ', and after it is displayed on the built-in display 18', any processing such as switching to an answering machine function, a call, a disconnection, etc. is performed (step 123).

When a preset key operation is performed on the originating analog terminal device 1 that has received and recognized the switching request notification,
The CPU 13 of the analog terminal device 1 on the transmitting side recognizes this key operation and determines whether switching is possible (step 114).
A switch disable notification (step 115) for rejecting the switch or a switch enable notification (step 116) for accepting the switch is transmitted via the switch control signal transmitting / receiving unit 9.

CPU 1 of the analog terminal device 1'of the receiving side
If 3'receives the switch-disabled notification, step 11
Similar to step 2, steps 118 to 123 are performed.

CPU 1 of the analog terminal device 1'on the receiving side
When 3'receives the switchable notification, it enters the standby state for the switch permission notification.

CPU 1 of the analog terminal device 1'on the receiving side
After confirming the switching request recognition notification, 3'starts time monitoring, and if neither the switching impossible notification nor the switching possible notification is received even after the elapse of a certain time, it is considered that the switching is impossible and the steps 118 to 123 Is processed.

In the sending side analog terminal device 1 which has sent the switchable notification, a dedicated data input keyboard, personal computer or the like is prepared as necessary (step 1
19) After the preparation is completed, the CPU 13 is notified by performing a preset key operation.

The CPU 13 sends a switching permission notification through the switching control signal transmitting / receiving section 9 (step 120).

CPU 1 of the analog terminal device 1'on the receiving side
Upon recognizing that the switching permission notification has been received (step 121), the 3'displays it on the built-in display 18 'and announces it to the user by the speaker 19' (step 124).

CPU 1 of the analog terminal device 1'on the receiving side
3'starts monitoring the time after receiving the switchable notification, and if the switch permission notification cannot be recognized even after the elapse of a certain period of time, the processes of step 122 and step 123 are performed as in the case of step 112.

The user on the receiving side, who is informed that the switching permission notification has been received in step 124, prepares a dedicated keyboard for inputting data, a personal computer or the like, if necessary (step 125), and preset. The execution of switching is notified to the CPU 13 'by key operation.

The CPU 13 'on the receiving side sends a switching execution notice to the analog terminal device 1 on the transmitting side via the switching control signal transmitting / receiving section 9' (step 126), and switches the changeover switch section 20 'under the control of the CPU 13'. To switch to the data communication circuit unit 12 '.

CPU 13 of the analog terminal device 1 on the originating side
Upon receiving the switching execution notification, switches to the data communication circuit unit 12 by controlling the changeover switch unit 20.

Thus, a communication path is established, switching execution processing such as negotiation for analog data communication is performed between the terminal devices, and analog data communication is started (step 127).

Next, a switching procedure for switching from voice call to analog data communication during voice call will be described with reference to FIG.

The following description is for a switching procedure for switching to analog data communication during a voice call between two wired analog terminal devices. The wired digital terminal device 2,
Analog wireless terminal device 3, digital wireless terminal device 4,
The same applies to switching from a call between terminal devices having different attributes such as.

Two analog terminal devices 1 and 1 '
(In the figure, the device on the left side is distinguished by adding '), and a call is in progress (step 201).

When a request for switching to data communication is made from one analog terminal device 1 '(step 202), a preset key operation is performed.

The following switching operation is performed in exactly the same procedure as in FIG.

The CPU 13 'of the request-side analog terminal device 1'recognizing this key operation sends a communication switch request notification to the partner analog terminal device 1 via the switch control signal transmitting / receiving section 9'. (Step 203).

The CPU 13 determines whether or not the requested analog terminal device 1 is a terminal device capable of receiving and recognizing the switching request notification (step 204), and if recognizable, the requested analog terminal device 1 The CPU 13 of 1
A switching request recognition notification is sent to the request-side analog terminal device 1 ′ via the switching control signal transmitting / receiving unit 9 (step 20).
5).

Whether the user of the request-side analog terminal device 1 responds to the switching request is determined by displaying it on the built-in display 18 or by notifying the user by making an announcement through the speaker 19 (step 20).
8).

CPU 1 of requesting analog terminal device 1 '
The state 3'is in a state of waiting for the switch disable notification or the switch enable notification by determining the confirmation of the reception of the switch request recognition notification via the switch control signal transmitting / receiving unit 9 '(step 206) and confirming the switch request recognition notification. become.

CPU 1 of the request-side analog terminal device 1 '
3'starts time monitoring from the transmission of the switching request notification, and when the switching request recognition notification from the requested analog terminal device 1 is not received within the specified time, that is, the requested analog terminal device 1 sends the switching request notification. If the terminal device cannot receive the request, it is determined that switching is impossible because the switching request cannot be recognized (step 207).

The speaker 1 indicates that the communication cannot be switched.
An announcement is made from 9 ', and it is displayed on the built-in display 18', and then any processing such as switching to an answering machine function, a call or a disconnection is performed (step 218).

When a preset key operation is performed on the requested analog terminal device 1 that has received and recognized the switching request notification,
The CPU 13 of the analog terminal device 1 on the requested side recognizes this key operation and determines whether or not switching is possible (step 20).
9), notification that switching cannot be switched (step 21)
0) or a switchable notification (step 211) that approves the switching is transmitted via the switching control signal transmitting / receiving unit 9.

CPU 1 of requesting analog terminal device 1 '
If 3'receives the switch-disabled notification, step 20
Similar to step 7, steps 213 to 218 are performed.

CPU 1 of requesting analog terminal device 1 '
3'starts monitoring the time after confirming the switching request recognition notification, and if neither the switching possible notification nor the switching impossible notification is received even after the elapse of a certain time, it is regarded as an abnormality and the processing from step 213 to step 218 is performed.

CPU 1 of requesting analog terminal device 1 '
When 3'receives the switchable notification, it enters the standby state for the switch permission notification.

The request-side analog terminal device 1 that has sent the switchable notification prepares a dedicated data input keyboard, personal computer, or the like as needed (step 214), and is set in advance after the preparation is completed. A key operation is performed to notify the CPU 13.

The CPU 13 sends a switching permission notification through the switching control signal transmitting / receiving section 9 (step 215).

CPU 1 of requesting analog terminal device 1 '
When the 3'recognizes that the switching permission notification is received (step 216), the 3'displays it on the built-in display 18 'and announces it from the speaker 19' to inform the user (step 219).

CPU 1 of requesting analog terminal device 1 '
3'starts monitoring the time after confirming the switchable notification, and when the switch permission notification cannot be recognized even after the elapse of a certain time, the processes of step 217 and step 218 are performed as in the case of step 207.

The requesting user, who has been informed that the switching permission notification has been received in step 219, prepares a dedicated data input keyboard, personal computer, or the like as necessary (step 220), and preset. The execution of switching is notified to the CPU 13 'by key operation.

The CPU 13 'on the request side sends a switching execution notice to the analog terminal device 1 on the requested side via the switching control signal transmitting / receiving unit 9' (step 221), and controls the changeover switch unit 20 'by the control of the CPU 13'. The data communication circuit unit 12 'is switched.

CPU 1 of the analog terminal device 1 on the request side
3 receives the switching execution notification, the switching switch unit 20
To switch to the data communication circuit unit 12.

As a result, a communication path is established, switching execution processing such as negotiation for analog data communication is performed between the terminal devices, and analog data communication is started (step 222).

FIG. 5 is a sequence diagram showing a procedure for switching from analog data communication to voice communication when an incoming call is received by data communication.

In the following description, a procedure for switching to a voice call when an incoming call is received from the wired analog terminal device 1 to the wired analog terminal device 1'by analog data communication will be described. The wired digital terminal device 2, the analog wireless device The same applies to switching between terminal devices having different attributes such as the terminal device 3 and the digital wireless terminal device 4.

In the following description, the device on the receiving side will be marked with'to clarify the distinction.

When a call is made from the calling analog terminal 1 to the calling analog terminal 1'by analog data communication (step 301), the line interface section 8'of the calling analog terminal 1'receives this. Causes the ringer to ring (step 302) to notify that there is an incoming call.

The analog terminal device 1'on the receiving side is a modem,
Since it is a terminal device such as FAX which is supposed to receive an incoming call by data communication in advance, normally, an analog data is transmitted in a normal sequence through the transmission / reception signal conversion unit 10 ′ and the data communication circuit unit 12 ′ by an automatic response function. Communication is started (step 304).

However, if the user of the analog terminal device 1'on the receiving side requests a voice call at the time of receiving a call for some reason, a preset button key is operated.

The CPU 13 ', which recognizes the request for switching to the voice communication by recognizing the operation of the button key (step 305), sends an off-hook signal via the switching control signal transmitting / receiving section 9' (step 306), and once. A communication path is established to establish an analog data communication state (step 30).
7).

Upon confirming that the analog data communication state has been established, the CPU 13 'sends a switching request notification to the calling side analog terminal device 1'via the switching control signal transmitting / receiving section 9' (step 308).

When the calling side analog terminal device 1 is a terminal device capable of receiving and recognizing the switching request notification, the switching side notification is recognized (step 309), and the calling side analog terminal device 1 is recognized.
The CPU 13 sends a switching request recognition notification to the receiving-side analog terminal device 1'through the switching control signal transmitting / receiving unit 9 (step 310).

Then, it is displayed on the built-in display 18 of the calling side analog terminal device 1 or announced from the speaker 19 to inform the user whether or not the switching request is to be met (step 313).

CPU 1 of the analog terminal device 1'of the receiving side
3 ′ receives the switching request recognition notification (step 310) via the switching control signal transmitting / receiving unit 9 ′, recognizes the request recognition, and confirms the request recognition (step 311) to wait for the switching enable notification or the switching disable notification. become.

CPU 1 of the analog terminal device 1'on the receiving side
In 3 ', when the switching request recognition notification from the calling side analog terminal device 1 cannot be received within a certain time after the switching request notification is sent, that is, the switching request notification from the calling side analog terminal device is not received and cannot be recognized. If it is, it is determined that switching is not possible by the request recognition non-confirmation (step 312), and an announcement notifying that the call cannot be answered is output from the speaker 19 'and displayed on the built-in display 18'. , Analog data communication, disconnection, etc. are performed (step 323).

The transmitting side analog terminal device 1 which has received and recognized the switching request notification performs a preset key operation, whereby the CPU 13 recognizing the key operation allows the switchable notification (step 316) or A switching disable notification (step 315) for rejecting the switching is sent via the switching control signal transmitting / receiving unit 9.

CPU 1 of the analog terminal device 1'on the receiving side
When 3'receives the switch-disabled notification (step 31)
7), the same process as step 312 is performed (step 318).

CPU 1 of the analog terminal device 1'on the receiving side
3'starts monitoring the time after confirming the switching request recognition notification, and if neither the switching enabled notification nor the switching disabled notification is received even after the elapse of a certain time, it is recognized as an abnormality and the processing from step 318 to step 323 is performed.

CPU 1 of the analog terminal device 1'on the receiving side
When 3'receives the switchable notification, it enters the standby state of the switch permission notification.

In this case as well, the CPU 13 'monitors the time after receiving the switchable notification, and when the switch permission notification cannot be received even after the elapse of the predetermined time, the processes of steps 322 to 323 are performed.

The user of the calling side analog terminal device 1 which has sent the switchable notification prepares a handset or the like for voice communication as necessary (step 319), and after the preparation is completed, a preset key operation is performed. This notifies the CPU 13 of this, and the CPU 13 sends a switching permission notification via the switching control signal transmitting / receiving unit 9 (step 320).

CPU 1 of the analog terminal device 1'on the receiving side
The 3'recognizes that it has received the switching permission notification (step 321), displays it on the built-in display 18 ', and announces it from the speaker (step 324).

When the switch permission notification cannot be recognized after the switch enable notification is received, the CPU 13 'detects this by time monitoring (step 322) and performs the process of step 323.

The user who is notified of the switching permission by the display and the announcement prepares a handset or the like for a call as needed (step 325) and gives a switching execution notification to the CPU 13 'by a preset key operation. .

The CPU 13 'has a switching control signal transmitting / receiving section 9'.
A switching execution notification is sent to the analog terminal device 1 on the calling side via (step 326) and the changeover switch unit 20 'is controlled to switch to the voice communication circuit unit 11'.

When the CPU 13 of the originating analog terminal device 1 receives the switching execution notice, it controls the changeover switch unit 20 to switch to the voice communication circuit unit 11.

As a result, a communication path is established and a voice call is started (step 327).

A procedure for switching the analog terminal device during analog data communication to a voice call will be described with reference to FIG.

In the following description, when analog data communication is performed between two wired analog terminal devices,
The procedure for switching to voice communication will be described, but the same applies to switching in communication between terminal devices having different attributes such as a wired digital terminal device, an analog wireless terminal device, and a digital wireless terminal device.

In FIG. 6, two analog terminal devices 1 and 1 '(the analog terminal device on the left side in the figure is distinguished by attaching') are performing analog data communication (step 401).

It is assumed that a request for switching to a voice call is issued by one of the analog terminal devices 1'during analog data communication (step 402).

When the user operates a preset key, the CPU 13 'confirms that a switching request has been issued.
Sends a switching request notification via the switching control signal transmitting / receiving unit 9 ′ of the requesting analog terminal device 1 ′ (step 40).
3).

When the requested analog terminal device 1 is a terminal device capable of receiving and recognizing the switching request notification, the switching request notification is recognized (step 404), and the CPU 13 of the requested analog terminal device 1 transmits / receives the switching control signal. A switching request recognition notification is sent to the request-side analog terminal device 1'through the unit 9 (step 405).

Then, by displaying on the built-in display 18 of the request-side analog terminal device 1 or by making an announcement from the speaker 19, the user is informed whether or not the switching request is met (step 408).

CPU 1 of requesting analog terminal device 1 '
The 3'receives the switching request recognition notification (step 405) via the switching control signal transmitting / receiving section 9 ', recognizes the request recognition, and confirms the request recognition (step 406) to wait for the switching enable notification or the switching disable notification. become.

CPU 1 of requesting analog terminal device 1 '
In 3 ′, when the switching request notification is transmitted, the time is monitored, and if the switching request recognition notification from the requested analog terminal device 1 cannot be received within a certain time, that is, the switching request from the requested analog terminal device is received. If the terminal device cannot receive or recognize the notification, it is determined that switching is not possible by the request recognition unrecognized confirmation (step 407), and an announcement notifying that the call cannot be answered is output from the speaker 19 'and built-in. After displaying on the display 18 ',
Processing such as returning to analog data communication or disconnection is performed (step 418).

Upon receiving and recognizing the switching request notification, the request-side analog terminal device 1 performs a preset key operation, whereby the CPU 13 recognizing the key operation allows the switching permission notification (step 411), Alternatively, a switching disable notification (step 410) for rejecting the switching is sent out via the switching control signal transmitting / receiving unit 9.

CPU 1 of requesting analog terminal device 1 '
When 3'receives the switch-disabled notification (step 41)
2), the same processing as step 407 is performed (step 413).

CPU 1 of requesting analog terminal device 1 '
When 3'receives the switchable notification, it enters the standby state of the switch permission notification.

The user of the request-side analog terminal device 1 which has sent the switchable notification prepares a handset or the like for voice communication as necessary (step 414), and after the preparation is completed,
This is notified to the CPU 13 by a preset key operation, and the CPU 13 sends a switching permission notification via the switching control signal transmitting / receiving unit 9 (step 415).

CPU 1 of requesting analog terminal device 1 '
The 3'recognizes that the switching permission notification is received (step 416), displays it on the built-in display 18 ', and announces it from the speaker (step 419).

When the switch permission notification cannot be recognized after receiving the switch enable notification (step 416), the CPU 1
3'detects this by time monitoring (step 417) and performs the processing of step 418.

The user who is notified of the switching permission by the display and the announcement prepares a handset or the like for a call if necessary (step 420) and gives a switching execution notification to the CPU 13 'by a preset key operation. .

The CPU 13 'has a switching control signal transmitting / receiving section 9'.
A switching execution notification is sent to the request-side analog terminal device 1 via (step 421) and the changeover switch unit 20 'is controlled to switch to the voice communication circuit unit 11'.

CPU 13 of the request-side analog terminal device 1
Upon receiving the switching execution notification, controls the changeover switch unit 20 to switch to the voice communication circuit unit 11.

As a result, a communication path is established and a voice call is started (step 422).

The switching of the communication mode in the communication between the analog terminal devices has been described above, but the same switching can be performed in the communication between the digital type terminal devices or between the analog type communication terminal device and the digital type terminal device. It is possible.

That is, also in the communication between the digital type terminal devices, the switching between the analog data communication using the analog signal such as the modem signal and the push button dial signal and the voice call is performed as shown in FIGS. The switching procedure shown can be applied.

Regarding audio communication such as analog data communication and voice communication, since protocol information between digital terminal devices does not change, it can be handled in the same way as switching communication modes between analog terminal devices.

However, in the digital data communication using the protocol setting peculiar to the digital system, when the communication modes are switched between the digital data communication and the voice communication, the CPUs 13 and 13 'and the transmission / reception signal conversion units 10 and 10 are used. Since it is necessary to change the protocol setting in ', the sequence shown in FIGS. 3 to 6 is the same, but only the contents at the time of executing the switching process are changed.

As described above, the communication mode can be switched by the sequence of FIGS. 3 to 6 regardless of the type of the communication terminal device.

[0132]

According to the present invention, it is possible for the user of the terminal device on the receiving side to receive in a communication mode different from the communication mode specified by the calling side depending on the state of the user when an incoming call is received. Have.

Further, even during communication, for example, when it is desired to send or receive data during a call, it becomes possible to switch the communication form from call to data communication, and conversely when it is desired to make a call during data communication. In addition, there is an effect that the communication mode can be switched from data communication to voice communication.

[Brief description of drawings]

FIG. 1 is a system configuration diagram according to an embodiment of the present invention.

FIG. 2 is a block configuration diagram of a portion related to communication mode switching of a terminal device.

FIG. 3 is a sequence diagram when the receiving side switches from voice communication to analog data communication when receiving a call.

FIG. 4 is a sequence diagram when switching from one side to analog data communication during a call.

FIG. 5 is a sequence diagram when the receiving side switches from analog data communication to voice communication when receiving a call.

FIG. 6 is a sequence diagram when switching from one side to voice communication during analog data communication.

[Explanation of symbols]

1 Analog terminal device 2 Digital terminal equipment 3 analog wireless terminals 4 Digital wireless terminal 5 Wired public communication network 6 analog wireless communication network 7 Digital wireless communication network 8 line interface section 9 Switching control signal transceiver 10 Transmit / receive signal converter 11 Voice communication circuit 12 Data communication circuit section 13 Central processing unit (CPU) 14 Read-only memory (ROM) 15 Random access memory (RAM) 16 key interface section 17 button key 18 Built-in display 19 microphone speaker 20 Changeover switch

Claims (4)

(57) [Claims] 1. When an incoming call arrives, the called party responds and enters a communication state, and then a switching request notification within the voice frequency band or a switching request notification by digital data is sent to the calling side. In one of the communication methods for switching between voice communication and data communication under the agreement of the communication partner, by sending one of the switching request notification within the voice frequency band or the switching request notification by digital data to the other, the switching request notification is sent. The switching request receiving side that received the
If a switch request notification is recognized, request a switch request recognition notification
When sending to the sending side and it is in a switchable state, or
If you agree to switch, send a switchable notification to the requesting communication side
Then, after the preparation for switching is completed, a switching permission notification is sent to the request sender.
Characterized by leaving a communication system using a communication terminal device capable of changing the communication mode into the incoming call or communication. The switching notification from wherein SWITCHING request receiving side
The switching request transmission side that has received receives the switching enable notification.
If the switch permission notification is not received within a certain time,
The communication method using a communication terminal device capable of changing the communication mode at the time of incoming call or during communication according to claim 1 , wherein the switching process is stopped . 3. The switching preparation is completed after the switching permission notification is received.
The switching request sending side that has completed switching to the switching request notification receiving side
Characterized by delivering a line notification, the communication system using a communication terminal device capable of changing the communication mode during an incoming call or when the communication according to claim 1, wherein. 4. A SWITCHING request sending side sending the switching execution notification
After the request is issued, the switching request receiving side receives the switching execution notification,
The communication method using a communication terminal device according to claim 3 , wherein the communication modes are switched respectively .