JP2000174920A - Communication system using communication terminal equipment capable of varying communication mode at the time of call incoming or during communication - Google Patents

Abstract

PROBLEM TO BE SOLVED: To vary the communication mode at the time of call incoming or during communication in communication mutually between communication terminal equipments capable of taking both communication modes of voice communication and data communication. SOLUTION: Concerning an analog terminal equipment 1 and the other analog terminal equipment 1', e.g. connected by at least one of a cable public communication network 5, an analog radio communication network 6 and a digital radio communication network 7, a call-incoming side at the time of call-incoming and one of the equipments during communication sends switch requesting information to an opposite party and with the completion of the switch preparation of both of them, switch executing information is sent from a switching request sending side to execute switching.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication form of voice communication or data communication, whether incoming or outgoing to a communication terminal, whether wired or wireless, analog or digital. Belongs to the technical field concerned.

[0002]

2. Description of the Related Art Conventionally, the communication mode between communication terminal apparatuses, that is, voice communication or data communication, is limited to the communication mode specified by the calling communication terminal apparatus. 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 voice communication during data communication, it is desired to terminate the communication and then switch. A new call must be made in the form of communication, and the procedure is complicated.

[0004] It is an object of the present invention to provide a request for changing the communication mode at the receiving end's will at the time of an incoming call and at least one of the intentions at the time of communication so that the communication mode can be changed by agreement of the communication partner.

[0005]

In order to solve the above-mentioned problems, the invention according to the first aspect of the present invention is directed to a method for receiving a switching request notification within a voice frequency band or a digital data after a receiving side responds to a call and sets a communication state. In the communication state, one of the transmitting side and the receiving side sends a switching request notification in the audio frequency band or a switching request notification by digital data to the other side, so that the communication partner agrees. Switching between voice communication and data communication is performed below.

According to the present invention, the communication mode can be switched during an incoming call or during communication.

According to a second aspect of the present invention, there is provided a communication system using a communication terminal device capable of changing a communication mode at the time of an incoming call or during a communication, the method comprising the steps of: A request recognition notification is returned to the request transmitting side.

According to the present invention, the request transmitting side can receive the switching request notification and the receiving side can confirm that the requesting side has the switching function.

According to a third aspect of the present invention, there is provided a communication system using a communication terminal device capable of changing a communication mode during an incoming call or during a communication. If the request sending side does not receive the switching request recognition notification within a certain period of time, the switching request notification sending side determines that switching is not possible, performs processing according to the state at that time, and stops switching. And

According to the present invention, wasteful time is prevented from being wasted when the receiving side of the switching request notification does not have the switching function.

According to a fourth aspect of the present invention, there is provided a communication system using a communication terminal device capable of changing a communication mode during an incoming call or during a communication. If the request receiving side that received the is in a state where switching is not possible, or rejects switching,
The switching failure notification is returned to the request sending side.

According to the present invention, when the request receiving side is in a state where it cannot mechanically switch, or when the user does not want to switch, it is possible to notify the request transmitting side that switching is not possible.

According to a fifth aspect of the present invention, there is provided a communication system using a communication terminal device capable of changing a communication mode during an incoming call or during a communication. If the request receiving side that has received the request is in a switchable state or has agreed to switch, a switchable notification is returned to the request transmitting side.

According to the present invention, since it is possible to confirm that the request receiving side is in a switchable state or that the other party has agreed to the switching, it is possible to avoid unnecessary switching on the request transmitting side.

According to a communication system using a communication terminal device capable of changing a communication mode during an incoming call or during communication according to claim 6 of the present invention, in the invention according to claim 5, the switching request notification transmitting side includes After receiving the switching request recognition notification, if the switching request notification cannot be received within a certain period of time, the switching request notification sending side determines that the switching request receiving side is not in the switching enabled state, and performs a process according to the state at that time. Then, the switching is stopped.

According to the present invention, it is possible to prevent the request transmitting side from being unduly waited due to a mechanical failure of the request receiving side or a human processing error.

A communication system using a communication terminal device capable of changing the communication mode during an incoming call or during communication according to claim 7 of the present invention is the communication system according to any one of claims 1, 2 and 5. In the invention, the request receiving side receiving the switching request notification transmits a switching permission notification to the switching request transmitting side after the switching preparation is completed.

According to the present invention, it is possible to avoid the inconvenience that the request transmitting side executes switching before the request receiving side is ready for switching.

According to a communication system using a communication terminal device capable of changing a communication mode during an incoming call or during communication according to claim 8 of the present invention, in the invention according to claim 7, a switch request receiving side sends a switchable notification. The switching request transmitting side that has received the switching enable notification, after receiving the switching enable notification, if the switching permission notification has not been received within a predetermined time, determines that the switching request receiving side is not in the switchable state, and responds to the state at that time. It is characterized in that processing is performed to stop switching.

According to the present invention, the switching request transmitting side can know that switching cannot be performed due to the request receiving side, so that useless waiting can be avoided.

A communication system using a communication terminal device capable of changing a communication mode at the time of an incoming call or during communication according to the ninth aspect of the present invention is any one of the first, second, fifth and seventh aspects. In the invention described in (5), after receiving the switching permission notification, the switching request transmitting side that has completed the switching preparation transmits a switching execution notification to the switching request notification receiving side.

According to the present invention, it is possible to notify the request receiving side by issuing a switching execution notification that the switching request side and the request receiving side are ready for switching.

A communication system using a communication terminal device capable of changing a communication mode during an incoming call or during communication according to claim 10 of the present invention is claimed in claim 1, claim 2, claim 5, or claim 7.
Alternatively, in the invention according to any one of the ninth to tenth aspects, the switching request sending side sends the switching execution notification, and the switching request receiving side receives the switching execution notification, and then switches the communication mode.

According to the present invention, the switching request sending side and the switching request receiving side can switch in synchronization.

[0025]

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

Reference numeral 6 denotes an analog wireless communication network, in which the analog wireless terminal device 3 is registered, and which is connected to the analog wireless terminal device 3 wirelessly 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.

Numeral 7 denotes a digital radio communication network, in which the digital radio terminal 4 is registered, and which is wirelessly connected to the digital radio terminal 4 via a digital radio 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.

Normally, there are a plurality of analog terminal units 1, digital terminal units 2, analog wireless terminal units 3, and digital wireless terminal units 4, all of which can be freely connected by a wired public communication network 5.

FIG. 2 is a block diagram showing a portion related to the present invention of the four types of terminal devices, and this portion is common to the four types of terminal devices at a 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, 10
Denotes a transmission / reception signal converter, 11 denotes a voice communication circuit, and 12 denotes a data communication circuit.

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

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

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

For the sake of explanation, when a voice call is received from the wired analog terminal device 1 to another wired analog terminal device 1 '(the receiving side device is distinguished by adding''for clarity of explanation), It is assumed that the receiving-side wired analog terminal device 1 'switches to analog data communication.

The switching sequence described below is used 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 transmitting 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 voice call. Then, a ringer sound is emitted from the speaker 19 'under the control of the CPU 13' (step 102).

It is determined whether the off-hook is performed by ringing of the ringer (step 103), and the button key (or hook switch) 1 is pressed on the analog terminal device 1 'on the receiving side.
If a response is made by going off-hook by 7 ', the transmission / reception signal converter 10', the changeover switch 20 ', the voice communication circuit 11'
A voice call is entered through a microphone and a speaker (or handset) 19 'through normal processing (step 10).
4).

While the user is not off-hook, it is determined whether the user of the receiving-side analog terminal device 1 'rejects the voice call and requests analog data communication, and whether there is a communication mode switching request (step 105). 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, a preset button key 17 'is operated.

The operation of the button key 17 'is recognized by the CPU 13' via the key interface unit 16 ', and an off-hook signal is transmitted via the switching control signal transmission / reception unit 9' (step 106) to once establish a communication path. To make a voice call state (step 107).

After confirming that the voice 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 108).

The CPU 13 determines whether the originating 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 notification to the receiving-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 the message on the built-in display 18 or by announcing the speaker 19 to guide the user (step 11).
3).

CPU 1 of receiving-side analog terminal device 1 '
3 ′ determines whether the reception of the switching request recognition notification has been confirmed via the switching control signal transmission / reception unit 9 ′ (step 111), and, upon confirming the switching request recognition notification, waits for the switching disable notification or the switching enable notification. become.

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

The speaker 1 informs that communication cannot be switched.
After announcing from 9 'and displaying it on the built-in display 18', any processing such as switching to the answering machine function, talking, and disconnection is performed (step 123).

When a predetermined key operation is performed on the transmitting 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 receiving-side analog terminal device 1 '
If 3 'has received the switch-disabled notification, step 11
Steps 118 to 123 are performed in the same manner as in step 2.

CPU 1 of receiving-side analog terminal device 1 '
When 3 'receives the switching enable notification, the device enters a standby state for the switching permission notification.

CPU 1 of receiving-side analog terminal device 1 '
3 ′ starts monitoring the time after confirming the switching request recognition notification, and if neither the switching disable notification nor the switching enable notification is received even after the lapse of a certain time, it is regarded that the switching is not possible and steps 118 to 123 are performed. Is performed.

The transmitting-side analog terminal device 1 that has transmitted the switchable notification prepares a dedicated data input keyboard, a personal computer, and the like as necessary (step 1).
19) After the preparation is completed, the CPU 13 notifies the CPU 13 by performing a preset key operation.

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

CPU1 of analog terminal device 1 'on the receiving side
When recognizing that the switching permission notification has been received (step 121), the 3 'displays it on the built-in display 18' and announces it from the speaker 19 'to notify the user (step 124).

CPU 1 of analog terminal device 1 'on the receiving side
3 'starts time monitoring after receiving the switching enable notification, and when the switching permission notification cannot be recognized even after the lapse of a predetermined time, the processes of steps 122 and 123 are performed as in step 112.

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

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

CPU 13 of analog terminal device 1 on the transmitting side
Receives the switch execution notification, switches to the data communication circuit unit 12 by controlling the switch unit 20.

As a result, a communication path is established, switching 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 communication to analog data communication during a voice call will be described with reference to FIG.

The following description is of a switching procedure for switching to analog data communication during a voice call between two wired analog terminal devices.
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 ').

When a request to switch to data communication is issued from one of the analog terminal devices 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 analog terminal device 1' on the requesting side that has recognized the key operation sends a communication switching request notification to the analog terminal device 1 on the other side via the switching 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). 1 CPU 13
A switching request recognition notification is transmitted to the requesting analog terminal device 1 'via the switching control signal transmitting / receiving unit 9 (step 20).
5).

Whether or not the user of the requested analog terminal device 1 responds to the switching request is determined by displaying the message on the built-in display 18 or by giving an announcement through the speaker 19 to guide the user (step 20).
8).

CPU 1 of requesting analog terminal device 1 '
3 'determines whether the reception of the switching request recognition notification has been confirmed via the switching control signal transmission / reception unit 9' (step 206), and upon confirming the switching request recognition notification, waits for the switching disable notification or the switching enable notification. become.

CPU 1 of requesting 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, when the requested analog terminal device 1 receives the switching request notification. If the terminal device cannot receive the switching request, it is determined that the switching is impossible because the switching request cannot be recognized (step 207).

The speaker 1 informs that communication cannot be switched.
After announcing from 9 'and displaying it on the built-in display 18', any processing such as switching to the answering machine function, telephone call, disconnection, etc. is performed (step 218).

When a predetermined 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 request side recognizes this key operation and determines whether switching is possible (step 20).
9), a switch refusal notice that rejects the switch (step 21)
0) or a switchable notification (step 211) for accepting the switch is transmitted via the switch control signal transmitting / receiving unit 9.

CPU 1 of requesting analog terminal device 1 '
If 3 'has received the switch disable notification, step 20
Steps 213 to 218 are performed as in step 7.

CPU 1 of requesting analog terminal device 1 '
3 'starts time monitoring after confirming the switching request recognition notification, and if neither the switchable notification nor the switch disable notification is received even after the lapse of a fixed time, it is regarded as abnormal and the processes of steps 213 to 218 are performed.

CPU 1 of requesting analog terminal device 1 '
When 3 'receives the switching enable notification, the device enters a standby state for the switching permission notification.

The requested analog terminal device 1 that has transmitted the switchable notification prepares a dedicated data input keyboard, personal computer, and the like as needed (step 214). A key operation is performed to notify the CPU 13.

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

CPU 1 of analog terminal device 1 'on the request side
When recognizing that the switching permission notification has been received (step 216), 3 'displays it on the built-in display 18' and announces it from the speaker 19 'to notify the user (step 219).

CPU 1 of analog terminal device 1 'on the request side
3 'starts monitoring the time after confirming the switchable notification, and if the switch permission notification is not recognized even after the elapse of a predetermined time, the processes of steps 217 and 218 are performed as in step 207.

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

The requesting CPU 13 'sends a switching execution notification to the requested analog terminal device 1 via the switching control signal transmitting / receiving unit 9' (step 221), and controls the switching switch unit 20 'under the control of the CPU 13'. Switch to the data communication circuit unit 12 '.

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

As a result, a communication path is established, switching 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 data is received by data communication.

In the following description, a procedure for switching from a wired analog terminal device 1 to a wired analog terminal device 1 'to a voice call when an incoming call is received by analog data communication will be described. 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 is marked with a 'to clarify the distinction.

When a call is transmitted by analog data communication from the transmitting analog terminal device 1 to the receiving analog terminal device 1 '(step 301), the line interface unit 8' of the receiving analog terminal device 1 'receives the signal. Causes the ringer to ring (step 302) to indicate that there is an incoming call.

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

However, if for some reason the user of the terminating-side analog terminal device 1 'requests a voice call upon receiving a call, the user operates a preset button key.

The CPU 13 'recognizing the switching request 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 temporarily stops. A communication path is established to enter an analog data communication state (step 30).
7).

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

If the originating analog terminal device 1 is a terminal device capable of receiving and recognizing the switching request notification, it recognizes the switching request notification (step 309), and
CPU 13 transmits a switching request recognition notification to the receiving-side analog terminal device 1 'via the switching control signal transmitting / receiving section 9 (step 310).

Then, by displaying on the built-in display 18 of the calling side analog terminal device 1 or making an announcement from the speaker 19, the user is notified whether or not to respond to the switching request (step 313).

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

CPU 1 of analog terminal device 1 'on the receiving side
In 3 ', when a switching request recognition notification from the calling side analog terminal device 1 cannot be received within a predetermined time after sending the switching request notification, that is, a terminal device that cannot receive and recognize the switching request notification from the calling side analog terminal device. If it is determined that the request cannot be recognized, it is determined that switching is not possible (step 312), an announcement notifying that the call cannot be answered is output from the speaker 19 ', and displayed on the built-in display 18'. , Or switching to analog data communication or disconnection (step 323).

The transmitting-side analog terminal device 1 that has received and recognized the switching request notification performs a key operation set in advance, so that the CPU 13 that has recognized the key operation accepts the switching (step 316), or A switch refusal notice (step 315) for rejecting the switch is transmitted via the switch control signal transmitting / receiving unit 9.

CPU 1 of analog terminal device 1 'on the receiving side
If 3 ′ receives the switch disable notification (step 31)
7) The same processing as in step 312 is performed (step 318).

CPU 1 of receiving-side analog terminal device 1 '
3 'starts time monitoring after confirming the switching request recognition notification, and when neither the switchable notification nor the switch disable notification is received even after the lapse of a predetermined time, it is recognized as abnormal and the processing of steps 318 to 323 is performed.

CPU 1 of analog terminal device 1 'on the receiving side
When 3 'receives the switching enable notification, the device enters a standby state for the switching permission notification.

Also in this case, the CPU 13 'monitors the time after the reception of the switchable notification, and if the switch permission notification cannot be received after the lapse of a predetermined time, the processing of steps 322 to 323 is performed.

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

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

If the switching permission notification is not recognized after receiving the switching enable notification, the CPU 13 'detects this by time monitoring (step 322), and performs the processing of step 323.

The user notified of the switching permission by the display and the announcement prepares a telephone handset and the like as necessary (step 325), and instructs the CPU 13 'to execute the switching by a preset key operation. .

The CPU 13 'is provided with a switching control signal transmitting / receiving section 9'
(Step 326), and controls the switch 20 'to switch to the voice communication circuit 11'.

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

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

Referring to FIG. 6, a procedure for switching an analog terminal device performing analog data communication to a voice call will be described.

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 devices on the left side of the figure are marked with') to perform analog data communication (step 401).

It is assumed that a request to switch to a voice call is made in one analog terminal device 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).

If the requested analog terminal 1 is a terminal 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 1 transmits and receives the switching control signal. A switching request recognition notification is transmitted to the requesting analog terminal device 1 'via the unit 9 (step 405).

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

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

CPU 1 of requesting analog terminal device 1 '
In 3 ', the time is monitored from the transmission of the switching request notification, and when the switching request recognition notification from the requesting analog terminal device 1 cannot be received within a predetermined time, that is, the switching request from the requesting analog terminal device. If the terminal device cannot receive and recognize the notification, it determines that the switching is impossible by confirming that the request cannot be recognized (step 407), outputs an announcement notifying that the call cannot be answered from the speaker 19 ', and incorporates the notification. After displaying on the display 18 ',
Processing such as returning to analog data communication or disconnecting is performed (step 418).

Upon receiving and recognizing the switch request notification, the requested analog terminal device 1 performs a preset key operation, whereby the CPU 13 recognizing the key operation accepts the switch (step 411). Alternatively, a switch refusal notice (step 410) for rejecting the switch is transmitted via the switch control signal transmitting / receiving unit 9.

CPU 1 of requesting analog terminal device 1 '
If 3 ′ receives the switch disable notification (step 41)
2) The same processing as in step 407 is performed (step 413).

CPU 1 of requesting analog terminal device 1 '
When 3 'receives the switching enable notification, the device enters a standby state for the switching permission notification.

The user of the requested analog terminal device 1, which has transmitted the switchable notification, prepares a handset for voice communication if necessary (step 414).
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 '
3 'recognizes that the switching permission notice has been received (step 416), and displays it on the built-in display 18' and announces it from the speaker (step 419).

If the switch permission notification is not recognized after receiving the switch enable notification (step 416), the CPU 1
3 'detects this by time monitoring (step 417), and performs the process of step 418.

The user notified of the switching permission by the display and the announcement prepares a telephone handset and the like as necessary (step 420), and instructs the CPU 13 'to execute switching by a preset key operation. .

The CPU 13 'is provided with a switching control signal transmitting / receiving section 9'
(Step 421), and controls the switch 20 'to switch to the voice communication circuit 11'.

CPU 13 of requested analog terminal device 1
When the switch receives the switching execution notification, it controls the switch 20 to switch to the voice communication circuit 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 analog terminal devices has been described above. The same switching is performed in the communication between digital terminal devices or between the analog communication terminal device and the digital terminal device. It is possible.

That is, in communication between digital terminals, switching between analog data communication using analog signals such as a modem signal and a push button dial signal and voice communication is shown in FIGS. The indicated switching procedure can be applied.

Audio communication such as analog data communication and voice communication can be handled in the same manner as switching of communication mode between analog terminal devices because the protocol information between digital terminal devices does not change.

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

As described above, regardless of the type of the communication terminal device, the communication mode can be switched by the sequences shown in FIGS.

[0132]

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

Also, during communication, for example, when it is desired to send or receive data during a call, the communication mode can be switched from the call to the data communication. This has the effect that the communication mode can be switched from data communication to voice communication.

[Brief description of the 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 the terminal device.

FIG. 3 is a sequence diagram in a case where 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 to analog data communication during a call;

FIG. 5 is a sequence diagram in a case where 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 to voice communication during analog data communication.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Analog terminal device 2 Digital terminal device 3 Analog wireless terminal device 4 Digital wireless terminal device 5 Wired public communication network 6 Analog wireless communication network 7 Digital wireless communication network 8 Line interface unit 9 Switching control signal transmission / reception unit 10 Transmission / reception signal conversion unit 11 Voice Communication circuit unit 12 Data communication circuit unit 13 Central processing unit (CPU) 14 Read-only memory (ROM) 15 Random access memory (RAM) 16 Key interface unit 17 Button key 18 Built-in display 19 Microphone speaker 20 Switching switch unit

Claims (10)

[Claims] When receiving an incoming call, the receiving side responds and enters a communication state, and then sends a switching request notification in the audio frequency band or a switching request notification using digital data to the calling side. One side switches between voice communication and data communication under the agreement of the communication partner by sending a switching request notification within the voice frequency band or a switching request notification using digital data to the other, A communication method using a communication terminal device that can change the communication mode during communication. 2. The method according to claim 1, wherein when the request receiving side that has received the switching request notification recognizes the reception, the switching request recognition notification is returned to the request transmitting side. A communication method using a communication terminal device that can change the communication mode. 3. After sending the switching request notification, if the request sending side fails to receive the switching request recognition notification within a predetermined time, the switching request notification sending side determines that the switching is not possible, and responds according to the state at that time. 3. The communication method using a communication terminal device according to claim 2, wherein the communication mode is changed during an incoming call or during communication. 4. The method according to claim 1, wherein when the request receiving side that has received the switching request notification is in a state where switching is impossible or when switching is rejected, a switching disable notification is returned to the request transmitting side. Alternatively, a communication method using a communication terminal device according to claim 2, wherein a communication mode can be changed during an incoming call or during communication. 5. The switchable notification is returned to the request transmitting side when the request receiving side that has received the switching request notification is in a switchable state or when switching is agreed. A communication method using the communication terminal device according to claim 2, wherein the communication mode can be changed at the time of an incoming call or during communication. 6. The switching request notification transmitting side, if the switching request notification sending side fails to receive a switching enable notification within a predetermined time after receiving the switching request recognition notification, the switching request notification sending side sets the switching request receiving side to a switching enabled state. The communication using the communication terminal device capable of changing the communication mode at the time of an incoming call or during communication according to claim 5, wherein it is determined that there is no communication, and processing is performed in accordance with the state at that time and switching is stopped. method. 7. The switching device according to claim 1, wherein the request receiving side that has received the switching request notification sends a switching permission notification to the switching request transmitting side after the switching preparation is completed. 5. A communication method using a communication terminal device capable of changing a communication mode at the time of an incoming call or during communication according to any one of 5. 8. The switching request transmitting side that has received the switching possibility notification from the switching request receiving side, if the switching permission receiving notification is not received within a predetermined time after receiving the switching possibility notification, the switching request receiving side can perform switching. 8. The communication terminal device according to claim 7, wherein it is determined that the communication terminal is not in the state, and the switching according to the state at that time is stopped to stop the switching. Communication method. 9. The switching request transmitting side, which has completed the switching preparation after receiving the switching permission notification, sends a switching execution notification to the switching request notification receiving side. 8. A communication method using a communication terminal device according to claim 5 or 7, wherein the communication mode can be changed during an incoming call or during communication. 10. The switching request sending side sends a switching execution notification, and the switching request receiving side executes the switching of the communication mode after receiving the switching execution notification. 10. A communication system using a communication terminal device according to claim 5, wherein said communication terminal device can change a communication mode during an incoming call or during communication.