JPH10145516A - Data communication method - Google Patents

Abstract

(57) [Problem] To provide a data communication method by which a called data communication terminal device can receive data transmitted from a calling data communication terminal device to a voice storage device. The calling data communication terminal device, if it does not receive a called station non-voice terminal identification signal corresponding to a calling station non-voice terminal identification signal from a called terminal device within a predetermined time period, The side terminal apparatus recognizes that the called terminal apparatus is a voice storage apparatus, and assuming that the called terminal apparatus is a data communication terminal apparatus capable of transmitting data to each other, as a response to the transmitted control signal, the called terminal apparatus. Data transmission while transmitting a control signal to the called terminal sequentially assuming that the control signal has been received, and assuming that the control signal has been received. .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication method in which data communication terminal devices such as facsimile devices transmit data such as facsimile data via a telephone network.

[0002]

2. Description of the Related Art Today, mobile communication terminals such as mobile phones and PHSs (Personal Handy Phone Systems) have become widespread, and mobile facsimile machines have also appeared.

[0003] With the spread of such mobile communication terminals, sounds and conversations of the terminals are perceived as noise, and places where use of the terminals are prohibited have been increasing. In addition, there are cases where the number of channels per radio base station is insufficient and conversation cannot be performed, and there is a problem with a service area or the like, and communication with a person having a mobile communication terminal cannot always be performed. for that reason,
As a service of a telecommunications carrier, a voice message for a specific subscriber is recorded and stored in a voice storage device in a telephone network in association with a box number assigned to the specific subscriber, and thereafter, the specific subscriber is , A voice storage service capable of transmitting a voice message of the recorded content to the specific subscriber has been newly started.

On the other hand, in a data communication terminal device such as a facsimile device that performs data communication using a telephone network, normal data transmission is performed unless a control signal is exchanged based on a predetermined transmission control procedure such as a G3 facsimile protocol. Can't do it. In other words, the called-side data communication terminal device responds to the calling-station non-voice terminal identification signal sent from the calling-side data communication terminal device, and returns the called-station non-voice terminal identification signal. Unless it can be confirmed that it is a data communication terminal device, data transmission cannot be performed.
The calling data communication terminal device receives the function identification signal from the called data communication terminal device, knows the function of the called data communication terminal device, and Data transmission cannot be performed unless a function common to the own device is set and the set content is notified to the called data communication terminal device.

[0005]

Therefore, a calling-side data communication terminal such as a facsimile apparatus that performs data communication using a telephone network uses the voice storage service to receive data from a mobile data communication terminal or the like. Even if data is transmitted to the calling data communication terminal device, the voice storage device simply records the control signal from the calling data communication terminal device as voice, and receives a predetermined response based on the control signal. Therefore, the calling-side data communication terminal device determines that the data communication terminal device is not capable of data transmission, and cannot transmit data. On the other hand, even if the called data communication terminal attempts to receive data from the calling data communication terminal from the voice storage device, such data is not stored. Can not do it. Even if data from the calling side data communication terminal device is stored as a voice signal in the voice storage device, exchange of a control signal based on a predetermined transmission control procedure for extracting the data as the voice signal. Cannot be performed with the voice storage device, and thus cannot be received.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can transmit data from a calling-side data communication terminal device to the voice storage device even through a voice storage device. An object of the data communication terminal device is to provide a data communication method capable of receiving data from the calling side data communication terminal device stored in the voice storage device.

[0007]

According to a first aspect of the present invention, there is provided a data communication method in which a calling data communication terminal issues a call to a subscriber number of a called terminal via a telephone network. After calling and connecting the line, a calling station non-voice terminal identification signal is transmitted, and a called station non-voice terminal identification signal corresponding to the calling station non-voice terminal identification signal is transmitted from the called terminal device within a predetermined time. In the case of receiving, in the data communication method of recognizing the called terminal device as a data communication terminal device capable of data transmission with each other, and thereafter performing data transmission while exchanging control signals based on a predetermined transmission control procedure thereafter. The calling data communication terminal device calls the subscriber number of the called terminal device via a telephone network, connects the line, and transmits the calling station non-voice terminal identification signal. Non-voice terminal identification signal If the called terminal device is not received from the called terminal device within a predetermined time, the called terminal device is recognized as a voice storage device, and thereafter, a control signal based on the predetermined transmission control procedure is transmitted to the called terminal device. On the other hand, if it is assumed that the called terminal device is a data communication terminal device capable of transmitting data to each other, it is received from the called terminal device as a response to the transmitted control signal. It is characterized in that data transmission is performed while waiting for a reception time of a possible control signal and sequentially transmitting a control signal to the called terminal device assuming that the control signal has been received.

According to a second aspect of the present invention, there is provided a data communication method, wherein the calling data communication terminal device calls the subscriber number of the called terminal device via the telephone network and connects to the line, and then the calling station non-voice. A terminal identification signal is transmitted, and when a called station non-voice terminal identification signal corresponding to the calling station non-voice terminal identification signal is received from the called terminal device within a predetermined time, the called terminal devices are mutually connected. In a data communication method for recognizing a data communication terminal device capable of data transmission and thereafter performing data transmission while exchanging control signals based on a predetermined transmission control procedure, the calling side data communication terminal device includes a telephone network. Does not receive the called station non-voice terminal identification signal with respect to the calling station non-voice terminal identification signal transmitted after calling the subscriber number of the called terminal device via the line connection, Predetermined response sound registered in advance Is received from the called terminal device, the called terminal device recognizes that it is a voice storage device, and thereafter transmits a control signal based on the predetermined transmission control procedure to the called terminal device. On the other hand, if it is assumed that the called terminal device is a data communication terminal device capable of data transmission with each other, the called terminal device will receive from the called terminal device as a response to the transmitted control signal. Data transmission is performed while waiting for a control signal reception time and sequentially transmitting a control signal to the called terminal device assuming that the control signal has been received.

According to a third aspect of the present invention, there is provided a data communication method according to any one of the first and second aspects, wherein the calling side data communication terminal is connected to the called side terminal via a telephone network. The called terminal responds with the called station non-voice terminal identification signal to the calling station non-voice terminal identification signal transmitted after the call is made to the subscriber number and connected to the line. The correspondence between the subscriber number of the called terminal device, which was able to perform data transmission while exchanging control signals based on a predetermined transmission control procedure, and the communication timing information of the mutually exchanged control signals is determined in advance by a communication timing learning history. On the other hand, when a call is made to the subscriber number of the called terminal device via the telephone network and the called terminal device is recognized as a voice storage device, Signal is stored in the communication timing learning history table, if the called terminal device is a data communication terminal device capable of transmitting data to each other, the transmitted control signal The reception equivalent time being a time to wait for a control signal that will be received from the called terminal device as a response to the
The transmission timing of the control signal is determined based on communication timing information corresponding to the subscriber number stored in the communication timing learning history table.

According to a fourth aspect of the present invention, in the data communication method according to any one of the first to third aspects, the calling data communication terminal device transmits the voice signal to the called terminal device. When data is transmitted as being recognized as a storage device, the fact is displayed or / and output as a report.

According to a fifth aspect of the present invention, there is provided a data communication method, wherein the calling data communication terminal device calls the subscriber number of the called terminal device via the telephone network and connects the line, and then the calling station non-voice. A terminal identification signal is transmitted, and when a called station non-voice terminal identification signal corresponding to the calling station non-voice terminal identification signal is received from the called terminal device within a predetermined time, the called terminal devices are mutually connected. In a data communication method for performing data transmission while exchanging control signals with each other based on a predetermined transmission control procedure after recognizing the data communication terminal device as capable of data transmission, the data communication terminal device as the called terminal device 4. The calling-side data communication terminal device according to claim 1, wherein the calling-side data communication terminal device calls the voice storage device and stores the voice message as a voice message addressed to the own device. When receiving the control signal and the data of the above, it is accepted without responding to the control signal and the data is received as it is from the calling side data communication terminal device under the communication conditions specified by the control signal. It is characterized by.

In a data communication method according to a sixth aspect of the present invention, in the data communication method according to the fifth aspect, the data communication terminal device as the called terminal device includes the voice communication device stored in the voice storage device as a voice message. If an error occurs when receiving data from the calling data communication terminal device, the calling terminal identification information obtained from the calling terminal identification signal as the control signal received together with the reception is stored in advance. If there is a matching calling terminal identification information in the correspondence table between the calling terminal identification information and the subscriber number,
A call is sent to the corresponding subscriber number and a report that an error has occurred is transmitted.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment of the present invention will be described in detail.

FIG. 1 shows a block diagram of a facsimile apparatus 20 as a data communication terminal apparatus to which a data communication method according to the present invention is applied.

In FIG. 1, a facsimile machine 20 comprises:
Basically, it is a group 3 facsimile, and the system control unit 1 is a microcomputer that controls each unit of the apparatus. The scanner 2 is for reading a document image. The plotter is for recording and outputting the received image data and the communication management report. ROM4 is
This is a non-volatile memory in which the processing procedure of the system control unit 1 is written. The system control unit 1 sequentially reads the processing procedure of the ROM 4 and controls each unit of the apparatus as described above using the RAM 5 as a work area. The RAM 5 is backed up by a backup battery (not shown) and retains its stored contents even when the apparatus power is off.

The operation display unit 6 is provided with various keys such as a ten key and a transmission start key (not shown) for receiving an operation input from the user, and displays an operation state of the apparatus and various messages to the user. (Not shown) such as a liquid crystal display. Further, the operation display unit 6 includes a monitor speaker 6a.

The communication control unit 7 has a G3 facsimile modem function and a network control device function, and controls the connection and disconnection of the line with the telephone network 40, and modulates transmission data and demodulates reception data. The voice recognition unit 8 compares the voice data stored in advance with the given voice data,
The match / mismatch is detected. Note that various well-known recognition methods can be applied as a method of the voice recognition processing. The encoding / decoding unit 9 encodes and compresses the facsimile data to be transmitted by a predetermined encoding method such as the MH method or the MR method, and decodes and expands the received compressed facsimile data to restore the original facsimile data. belongs to. The system bus 10 is used for exchanging data between the above-described units.

The facsimile apparatus 20 according to the present embodiment configured as described above is accommodated in a telephone network 40 and receives a telephone number (subscriber number) from a communication carrier operating the telephone network 40. The facsimile apparatus transmits and receives facsimile data to and from other facsimile apparatuses accommodated in the telephone network 40. Now, as shown in FIG. 2, a facsimile apparatus 20a having the same configuration as the facsimile apparatus 20 according to the present embodiment transmits When facsimile data is transmitted to the receiving facsimile device 20b having the same configuration as the facsimile device 20 via the telephone network 40, if the receiving facsimile device 20b is in a state where it can normally receive, the data is received from the transmitting facsimile device 20a. By calling the telephone number of the side facsimile apparatus 20b, the communication path Ra as shown in FIG. Is line connection, it transmits facsimile data by exchanging control signals directly according G3 facsimile transmission control procedure.

However, the receiving facsimile machine 20b
Is likely to be in an unreceivable state as in the case of a facsimile apparatus connected to a mobile communication device.
In the case of using the voice storage service operated by the communication carrier that manages the transmission facsimile apparatus 20a, the transmission facsimile apparatus 20a changes the subscriber number of the reception facsimile apparatus 20b to the subscriber number. Even if a call is made (communication route Ra), the line is not connected, and the line is connected to the voice storage device 30 by the voice storage service (communication route Rb).

Since the voice storage device 30 literally only stores the received voice signal as it is so that the voice is recorded on the cassette tape, conventionally, the transmission control procedure of the G3 facsimile from the transmission side facsimile device 20a is performed. There is no response even if the control signal is sent according to
Fax data could not be sent. On the other hand, even if the receiving-side facsimile device 20b makes a call to the voice storage device 30 to make a line connection (communication route Rc) and can retrieve the voice signal stored in the mailbox assigned to the device itself, Since the facsimile data is not stored, the transmission-side facsimile apparatus 20a transmits the received facsimile apparatus 2 via the voice storage apparatus 30.
0b could not be transmitted facsimile data.

Therefore, the data communication method according to the present embodiment enables transmission of facsimile data via the voice storage device 30. Hereinafter, the data communication method according to the embodiment of the present invention will be described. The first to sixth embodiments will be described in detail.

First, a data communication method according to the first embodiment will be described with reference to FIGS. 3, 4 and 5, and with reference to signal sequences shown in FIGS. 6 and 7 as appropriate.
6 and 7 show the transmission side facsimile apparatus 20a.
2 shows a signal sequence between the voice storage device 30 and the voice storage device 30, and a signal sequence between the voice storage device 30 and the receiving-side facsimile device 20b. However, the signal sequence between the transmission-side facsimile machine 20a and the voice storage device 30 and the voice storage device 30 and the reception-side facsimile device 20
The signal sequence between “b” and “b” is not performed simultaneously, but is performed at different times from each other. However, in the figure, the signal sequences are illustrated simultaneously for convenience of explanation.

In FIG. 3, first, the system control unit 1 of the transmission-side facsimile apparatus 20a
After the original is set on the destination, the communication control unit 7 makes a dial call to the destination telephone number (fax number of the receiving facsimile machine 20b) input from the operation display unit 6 (process 101). Then, after activating the timer (process 102), a calling station non-voice terminal identification signal (CNG), which is a 1100 Hz signal, is transmitted (process 103).
Note that this signal CNG corresponds to signal S1 in FIG. Then, 2100H from the called terminal device
It is monitored whether or not a called station non-voice terminal identification signal (CED), which is a signal of z, is detected (decision 104).
While monitoring whether the timer started in step 2 has timed out (decision 105), the CED is detected (Y in decision 104).
es) Until a timeout occurs (Ye in decision 105)
s) Continue sending CNG (process 103). If the CED is detected (Yes in decision 104), it is known that the called terminal device that responded is a terminal that can directly transmit facsimile data by the G3 facsimile transmission control procedure. A facsimile data transmission process is performed by exchanging a control signal according to a facsimile transmission control procedure (process 107).

If a timeout occurs (No in decision 104) without detecting the CED (Yes in decision 105)
Shifts to the voice storage service corresponding process (process 10).
6).

In this case, as the time until the timer started in the process 102 times out, at least the maximum time that the called terminal device is expected to respond if it is a normal G3 facsimile device is at least. Although it is necessary, it must be further determined in consideration of the characteristics of the voice storage service. That is, in the voice storage service, the voice storage device 30 actually shifts to the voice storage state because there is a time to play a guidance voice message before the voice storage service actually shifts to the voice storage (recording) state. It needs to be long enough.

The voice storage service corresponding process of the process 106 is performed according to the procedure shown in FIGS. In other words, if the CED is not received from the called terminal device within a certain period of time, the receiving facsimile device 20b, which is the original destination, is in a non-receivable state, and the voice storage device 30 that performs the voice storage service is The system control unit 1 of the transmission-side facsimile machine 20a determines that the
Sends the calling station non-voice terminal identification signal CNG again by the communication control unit 7 (process 201). This CNG is shown in FIG.
, And CNG of the signal S1
Is a signal transmitted to confirm whether the called terminal device is a normal G3 facsimile device or a voice storage device, whereas the CN of the signal S2 is
G and the signal transmitted thereafter are stored (recorded) by the voice storage device 30 as a voice message that will be heard by the receiving facsimile device 20b that has called the voice storage device 30 later. .

If the called terminal device is a normal G3 facsimile device, the CNG transmitted in process 201 is
Although a response is made by the ED, the current called terminal device is the voice storage device 30, and the transmitted control signal is simply stored as voice, and the response control signal is not returned. Therefore, if the called terminal device is a G3 facsimile device, all functions of the called station non-voice terminal identification signal CED and non-standard capabilities of the called terminal device that will be received from the G3 facsimile device. Reception of the non-standard function identification signal NSF for identifying the terminal / the called terminal identification signal CSI for identifying the called terminal / the digital identification signal DIS for identifying all standard capabilities of the called terminal. Wait for a time (process 202). These reception equivalent times are determined based on the rules of the G3 facsimile transmission control procedure, and are stored in the ROM 4 in advance.

Then, a transmission terminal identification signal TSI for identifying the transmission side terminal device and a digital transmission command DCS for setting a standard capability within the range of DIS are transmitted (process 203). This TSI / DCS corresponds to signals S3 and S4 in FIG. In this case, since the control signal DIS is not actually received from the called terminal and it is not possible to actually know how the receiving facsimile apparatus has functions and capabilities, if the G3 facsimile apparatus is used. It is natural that any device has a standard resolution (3.85 lines / mm x 8 pixels /
mm) and coding method (MH coding method) are desirably set by DCS. However, even if it is not a standard function, it is practically within the range of functions considered to be provided in most devices. The setting may be made with.

Then, a TCF, which is a signal for confirming the transmission speed of the modem, is transmitted (process 204). If the called terminal is a G3 facsimile, the GCF is used.
Waiting for a reception reception confirmation signal CFR indicating the completion of the modem adjustment and the end of the pre-message procedure, which is likely to be received from the 3 facsimile apparatus, for a period of time equivalent to the reception (process 205). 9 at M
One page of encoded image information obtained by encoding using the H or MR encoding method is transmitted (process 20).
6). This processing 206 corresponds to the image information M in FIG.

When the transmission of the image information for one page is completed,
It is determined whether there is a next page (decision 207). If not (No in decision 207), an EOP, which is a signal indicating the end of the procedure, is transmitted (process 208). This EOP is shown in FIG.
This corresponds to the signal S6 in (a). If the called terminal device is a G3 facsimile device, after waiting for a time corresponding to the reception of the message confirmation signal MCF which will be received from the G3 facsimile device (process 209), the disconnection command signal DCN is transmitted. (Process 21
0), complete the process. The DCN is shown in FIG.
This corresponds to the signal S7 in FIG.

If it is determined in decision 207 that there is a next page to be transmitted (Yes), the transmission condition of the next page is different from that of the previous page, and if there is a mode change (Yes in decision 211), the message End signal EO
M is sent (process 212). This EOM is shown in FIG.
This corresponds to the signal S8 in (b). If the called terminal device is a G3 facsimile device, it waits for the reception time of the message confirmation signal MCF, which will be received from the G3 facsimile device (process 213), and further corresponds to the transmission mode change. After waiting for a certain time (process 214), the process is moved to process 202. For the second and subsequent pages, the T
The SI does not need to be sent.

If it is determined in decision 207 that there is a next page to be transmitted (Yes), and if the transmission condition of the next page is the same as that of the previous page and there is no mode change (No in decision 211), , Multi-page signal M
The PS is transmitted (process 215). This MPS is shown in FIG.
This corresponds to the signal S9 in (c). If the called terminal device is a G3 facsimile device, after waiting for a time corresponding to the reception of the message confirmation signal MCF, which will be received from the G3 facsimile device (process 213), the process proceeds to process 206. .

Thus, the transmitting facsimile machine 20
a is that even if the called terminal device is the voice storage device 30,
Transmission of facsimile data (image information) can be completed.

Next, a data communication method according to a second embodiment of the present invention will be described with reference to FIG.

In FIG. 8, first, after the original is set on the scanner 2, the system control unit 1 of the transmission-side facsimile apparatus 20a inputs the destination telephone number (the facsimile of the reception-side facsimile apparatus 20b). The communication control unit 7 makes a dial call to the (number) (process 301). Then, a calling station non-voice terminal identification signal (CNG) is transmitted (process 302). Note that this signal CNG corresponds to signal S1 in FIG. Then, it is monitored whether or not a called station non-voice terminal identification signal (CED) from the called terminal device is detected.
3) While monitoring whether the response voices match (decision 30)
4) CNG is detected until CED is detected (Yes in decision 303) or until the voice response matches (Yes in decision 304).
(Process 302). When the CED is detected (Yes in decision 303), it is known that the called terminal device that has responded is a terminal that can directly transmit facsimile data according to the G3 facsimile transmission control procedure. A facsimile data transmission process is performed by exchanging a control signal according to a facsimile transmission control procedure (process 306).

If the response voices match without detecting the CED (No in decision 303) (Ye in decision 304).
s) shifts to a voice storage service support process (process 3).
05). The voice storage service corresponding processing of the processing 305 is the same processing as the processing 106 in the procedure according to the first embodiment shown in FIG. 3, and is specifically the procedure shown in FIGS. 4 and 5. Is omitted.

Now, regarding the processing for determining whether or not the response voices match in the determination 304, the response voices are stored in the voice storage device 3 in the voice storage service.
0 is a guidance voice message to be played before actually shifting to a voice storage (recording) state.
0, the communication control unit 7 monitors the voice message received from the voice storage device 30 via the
The voice recognition unit 8 compares the voice data registered in the RAM 5 in advance with the voice message passed from the communication control unit 7 and determines whether or not they match, thereby determining the match / mismatch of the response voices. .

By following the voice storage service corresponding processing on the condition that the response voices match, compared to monitoring the detection of the CED for a certain period of time unconditionally as in the data communication method of the first embodiment. Then, it is possible to shift to the voice storage service correspondence processing more quickly.

Next, a data communication method according to the third embodiment will be described.

As a well-known technique, the receiving capability of a partner device transmitted once is known at the time of exchange of a control signal in a transmission control procedure, and the receiving capability of the known partner device and the subscriber number of the partner device (call origination) are known. There is a technique for shortening the communication time by omitting the procedure for setting the capability with the partner apparatus when a specific calling number is designated by registering the corresponding calling number. In the third embodiment, similarly,
In advance, a called terminal device that has been able to directly transmit facsimile data by directly exchanging a control signal according to a G facsimile transmission control procedure beforehand as a communication timing learning history table as shown in FIG. The call number and the communication timing information are associated with each other and stored in the RAM 5.
To memorize it. The specific content of the communication timing information is such that when the control signal is exchanged with the called terminal device of the corresponding calling number by the G facsimile transmission control procedure, the called control signal is transmitted to the called terminal device. Reception timing of the control signal received as a response from the device,
This is the transmission timing of the control signal in response to the received control signal.

In the data communication method according to the third embodiment, after the communication timing learning history table is created in advance, the processing 106 in the procedure of the data communication method according to the first embodiment shown in FIG. Alternatively, this is a voice storage service corresponding process that is performed as the process 305 in the procedure of the data communication method according to the second embodiment illustrated in FIG. 8 and that is performed instead of the voice storage service corresponding process illustrated in FIGS. 4 and 5. .

With reference to FIGS. 10, 11 and 12, a voice storage service corresponding process according to the third embodiment will be described.

In these figures, if the CED is not received from the called terminal device within a predetermined time, the receiving destination facsimile device 20b, which is the original destination, cannot receive any data, and the voice storage service is not activated. Voice storage device 3
The system controller 1 of the transmitting-side facsimile machine 20a determines that the response has been made on behalf of the transmitting side facsimile machine 20a, and sends the calling station non-voice terminal identification signal CNG again by the communication controller 7 (process 4).
01).

If the called terminal is a normal G3 facsimile machine, the CNG transmitted in the process 401 is
Although a response is made by ED, the current called terminal device is the voice storage device 30, and the transmitted control signal is simply stored as voice and the response control signal is not returned. If the called terminal device is a G3 facsimile device, all functions of the called station non-voice terminal identification signal CED and the non-standard capabilities of the called terminal device that will be received from the G3 facsimile device will be described. Non-standard function identification signal NSF for identification / Called terminal identification signal CSI for identifying the called terminal / Digital identification signal DIS for identifying all standard capabilities of the called terminal Wait (process 403 or process 404).

In this case, however, the waiting time differs depending on whether the learning history is stored in the communication timing learning history table shown in FIG. 9 (Yes in decision 402) or not (No in 402). That is, for example, when a call is made to the calling number of the receiving facsimile device 20b and, as a result, the line is connected to the voice storage device 30, the calling number of the receiving facsimile device 20b is changed to the communication shown in FIG. If the information is stored in the timing learning history table, the CED or NSF / CSI is used based on the communication timing information corresponding to the calling number of the receiving facsimile machine 20b.
Wait for the learning time for / DIS (process 404).
However, if the table is not stored, the CED and NSF / CSI / DIS are determined based on the agreement of the G3 facsimile transmission control procedure and stored in the ROM 4 in advance, as in the first or second embodiment. The process waits for the reception equivalent time (process 403).

Then, a transmission terminal identification signal TSI for identifying the transmission side terminal device and a digital transmission command DCS for setting a standard capability within the range of DIS are transmitted (process 405). In this case, the control signal DIS
Is not actually received from the called terminal and it is not possible to know what functions and capabilities the receiving facsimile device actually has. Therefore, any G3 facsimile device must be provided. It is desirable to set the standard resolution (3.85 lines / mm × 8 pixels / mm) and the encoding method (MH encoding method) by DCS, but it is not necessary to use a standard function. In general,
You may make it set within the range of the function considered that most apparatuses have.

Then, a TCF, which is a signal for confirming the transmission speed of the modem, is transmitted (process 406). If the called terminal is a G3 facsimile, the GCF is used.
Wait for a time corresponding to the reception of the reception preparation confirmation signal CFR indicating the completion of the modem adjustment and the end of the pre-message procedure, which will be received from the 3 facsimile machine (step 408 or step 409). However, also in this case, the calling number is stored in the communication timing learning history table, and if there is a communication timing learning history (Yes in decision 407), CF
Wait for the learning time for R (process 409), and if there is no learning history (No in decision 407), wait for the CFR reception equivalent time (process 408).

Then, while reading the original by the scanner 2, the encoding / decoding section 9 sends out one page of encoded image information obtained by encoding by the MH or MR encoding method (process 410). .

When the transmission of the image information for one page is completed,
It is determined whether there is a next page (determination 411). If there is no next page (No in determination 411), an EOP, which is a signal indicating the end of the procedure, is transmitted (processing 412). If the called terminal device is a G3 facsimile device, it waits for a time corresponding to the reception of the message confirmation signal MCF, which will be received from the G3 facsimile device (process 414 or 415). However, also in this case, the calling number is stored in the communication timing learning history table, and if there is a learning history of the communication timing (Yes in decision 413), the system waits for the learning time for the MCF (process 415), and the learning history becomes If not (No in decision 413), the process waits for a time corresponding to the reception of the MCF (process 414). Then, after waiting, the disconnection command signal DCN is transmitted (process 416), and the process is completed.

In the judgment 411, if there is a next page to be transmitted (Yes), if the transmission condition of the next page is different from that of the previous page and there is a mode change (Yes in judgment 417), the message End signal EO
M is sent (process 418). If the called terminal device is a G3 facsimile device, it waits for a time corresponding to the reception of the message confirmation signal MCF which will be received from the G3 facsimile device (processing 420 or 42).
1). However, also in this case, the calling number is stored in the communication timing learning history table, and if there is a learning history of the communication timing (Yes in decision 419), the system waits for the learning time for the MCF (process 421), and the learning history becomes If not (No in decision 419), the process waits for the MCF reception equivalent time (process 420). After further waiting for a time corresponding to the transmission mode change (process 422), the judgment 40
The processing is shifted to 2.

In the judgment 411, when there is a next page to be transmitted (Yes), when the transmission condition of the next page is the same as that of the previous page and there is no mode change (No in judgment 417), , Multi-page signal M
The PS is transmitted (process 423). If the called terminal device is a G3 facsimile device, it waits for a time corresponding to the reception of the message confirmation signal MCF which will be received from the G3 facsimile device (processing 425 or 4).
26). However, also in this case, the calling number is stored in the communication timing learning history table, and if there is a communication timing learning history (Yes in decision 424), the system waits for the learning time for the MCF (process 426), and the learning history becomes If there is not (No in determination 424), the process waits for the time equivalent to receiving the MCF (process 425). Then, the process proceeds to a process 410.

Thus, the transmitting facsimile machine 20
a is that even if the called terminal device is the voice storage device 30,
Transmission of facsimile data (image information) can be completed. Further, by storing the reception timing of the control signal in the transmission control procedure having a variation for each called terminal device for each called terminal device (calling number), a response from the called terminal device can be obtained. As well as being able to minimize the waiting time of the control signal received as, the timing of the transmission control procedure can be easily adjusted for each called terminal device,
For each called terminal device, it is easy to adjust the timing when facsimile data is retrieved from the voice storage device 30.

Next, a data communication method according to the fourth embodiment will be described.

As in the first to third embodiments, when the transmitting facsimile apparatus 20a transmits facsimile data to the voice storage apparatus 30 instead of the original receiving facsimile apparatus 20b, the transmitting facsimile apparatus From the user's point of view of the device 20a, the facsimile data that the user intended to transmit to the receiving facsimile device 20b, which is the original destination, was transmitted directly to the receiving facsimile device 20b or transmitted via the voice storage device 30. I can't tell if it was going to happen.

The procedure shown in FIG. 13 according to the fourth embodiment is applied after the transmitting facsimile apparatus 20a completes the transmission of facsimile data by the data communication method according to the above-described first to third embodiments. It is.

In the figure, the transmitting facsimile apparatus 2
The system control unit 0a determines whether the completed transmission processing is for the voice storage device 30 (decision 501). This determination is based on the first determination in the procedure shown in FIG.
The determination can be made by referring to whether the determination result of step 05 is Yes or the determination result of step 304 in the procedure shown in FIG. 8 is Yes.

If it is not for the voice storage device 30 (No in decision 501), the process is terminated as it is, but if it is for the voice storage device 30 (Yes in decision 501). Creates a transmission result report and develops it in the RAM 5 (processing 502), and records and outputs the created transmission result report by the plotter 3 (processing 5).
03). Further, the fact that it has been transmitted to the voice storage device 30 is displayed on the operation display unit 6 (process 504). In the process of displaying on the operation display unit 6 that the message has been transmitted to the voice storage device 30, the determination result of the determination 105 in the procedure shown in FIG. 3 and the determination result of the determination 304 in the procedure shown in FIG. Alternatively, it may be displayed immediately when it is decided to transmit to the voice storage device 30.

FIG. 14 shows an example of the transmission result report output by the process 503. The transmission result report shown in FIG.
Contains the fact that it has been stored in the. This allows
The user of the transmission-side facsimile machine 20a can confirm that the facsimile data is transmitted via the voice storage device 30 to the reception-side facsimile machine 20b.

Next, a data communication method according to the fifth embodiment will be described with reference to FIGS. This fifth
The embodiment relates to a case where the receiving-side facsimile apparatus 20b calls the voice storage apparatus 30 and retrieves the stored voice message including the facsimile data.

According to the data communication method for the transmission-side facsimile apparatus 20a according to the first to third embodiments, the control signal transmitted at the timing in consideration of the control signal timing of the reception-side facsimile apparatus 20b and the voice storage apparatus The facsimile data stored in the facsimile apparatus 30 can be received by a general G3 facsimile apparatus. However, since the voice storage apparatus 30 is interposed, the control signal cannot be directly exchanged with the transmission-side facsimile apparatus 20a. Can also occur. Therefore, in the fifth embodiment, when the receiving-side facsimile device 20b retrieves a voice message from the voice storage device 30, if the voice message includes a control signal or facsimile data from the transmitting-side facsimile device 20a, The processing of FIG.

In the voice storage service provided by the voice storage device 30, the basic procedure for retrieving voice messages addressed to the own device stored in the voice storage device 30 is as follows. After calling and connecting to the line, it is assumed that the mailbox number assigned to the own device is designated by a PB (push button) tone.

In FIGS. 15 and 16, the system control section 1 of the receiving facsimile apparatus 20b communicates the destination number of the voice storage service input from the operation display section 6 in order to retrieve the voice message addressed to itself. The call is handed over to the control unit 7 (process 601). Then, when connected to the voice storage service, a PB tone for specifying the number of the mailbox of the own device is transmitted, thereby specifying the mailbox from which the voice message is to be extracted (process 602). At this time, the system control unit 1
Since there is a transmission of a PB tone which is not included in the standard G3 facsimile transmission control procedure, it is determined that the subsequent processing is a voice message retrieval processing from the voice storage device 30, and the standard G3 facsimile transmission control procedure is performed. Exit.

In the voice storage service, when the mailbox number is designated, the message such as the number of messages is given, and then the message is started to be sent. Therefore, the system control unit 1 of the receiving facsimile apparatus 20b includes the operation display unit 6. The monitor speaker or a handset speaker (not shown) is turned on (step 603) to prepare for a case where the voice message to be received is not facsimile data but a real "voice" message.

Here, if the voice message to be received is facsimile data, the receiving facsimile apparatus 2
The content of the voice message received by Ob will be described with reference to FIGS.

Since the control signal and the facsimile data (image information) received by the voice storage device 30 from the transmission-side facsimile device 20a are stored (recorded) as they are, the time between the control signals received from the transmission-side facsimile device 20a is reduced. The intervals and timings are stored as they are as shown in FIGS. 6 and 7, and are adjusted by the data communication methods according to the first to third embodiments so as to match the transmission timing of the control signal of the receiving facsimile machine 20b. ing.

Now, returning to FIG. 15, after the process 602,
The voice storage device 30 takes out the voice message from the designated mailbox and sequentially receives the voice message from the receiving facsimile device 2.
0b, the communication control unit 7 receives the voice message and monitors whether or not the calling station non-voice terminal identification signal CNG contained therein is detected (decision 604).

If detected (Ye of decision 604)
s), and the detected CNG is the signal S2 in FIG.
The communication control unit 7 notifies the system control unit 1 and the system control unit 1
a is turned off (process 606). As a result, a true "voice" message can be heard by the monitor speaker 6a turned on in the process 603, and the signal tone of the facsimile data can be heard.

After detecting CNG, CED or NSF / CSI /
The detection of TSI / DCS is monitored without sending DIS (decision 606). This is, as shown in FIG.
This is because even if F / CSI / DIS is transmitted, the signal has no meaning for the audio storage device 30. Of course, even if CED or NSF / CSI / DIS is sent to the voice storage device 30, it is ignored without causing any harm.

When TSI / DCS is detected (decision 60)
6), the system controller 1 is notified, and then TC
F is detected (process 607). TSI detected
/ DCS and TCF correspond to signals S3 / S4 and S5 in FIG.

As shown in FIG. 6, the image information M includes a signal S5
After the transmission of the TCF, the transmission is performed after waiting for a time corresponding to the transmission of the CFR from the reception-side facsimile apparatus 20a. Therefore, after waiting for the transmission equivalent time of the CFR (process 608),
The communication control unit 7 puts the modem in a state of waiting for high-speed data. Further, upon receiving the TCF, the communication control unit 7 adjusts the modem or the like, but does not return the FTT which is a signal that fails in training and requests re-training, even if the training result is bad.

Then, the image information is received (process 609).
Thereafter, it monitors whether any of EOP, MPS or EOM is received (No in decision 614, N in decision 615).
o, No loop of decision 616).

EO corresponding to signal S6 shown in FIG.
If P has been received (Yes in decision 614), the communication control unit 7 does not send out the MCF (it does not cause any harm if sent out), monitors the reception of the DCN (No loop in decision 617), and resets the DCN. When received (Yes in decision 617)
Notifies the system control unit 1 and determines that one message has been completed. Further, the communication control unit 7 determines whether or not another message continues (determination 618), and when confirming a continuation signal indicating that another message continues (Yes in determination 618), notifies the system control unit 1. Then again C
In order to perform NG detection and voice detection, the process proceeds to decision 604. In the image information receiving procedure, the error correction flow is not performed even if an error occurs during reception. If there is no other message (No in decision 618), the process ends.

MP corresponding to signal S9 shown in FIG.
If S is received (Yes in decision 615), the communication control unit 7 does not send out the MCF (it does not cause any harm if sent out), sets the modem again to high-speed data waiting, and executes processing 6
09 is transferred.

EO corresponding to signal S8 shown in FIG.
If M has been received (Yes in determination 616), the communication control unit 7 determines that the next image information has a change in communication conditions,
Without sending the MCF (there is no actual harm even if it is sent), the processing moves to the judgment 606.

As a result, even when the data is passed through the voice storage device 30, the receiving facsimile device 20b can reliably receive the facsimile data from the transmitting facsimile device 20a.

The communication control section 7 passes the signal of the line to the voice recognition section 8 while monitoring the detection of CNG in the judgment 604, and checks whether or not the original "voice" message has been sent ( No loop of decision 610). If it is determined that the message is a “voice” message,
Until the message is completed (Yes in decision 611), the sound is continuously output from the monitor speaker 6a (No loop in decision 611). If it is determined (YES in decision 612), the process proceeds to decision 604 in order to receive the "voice" message and play it from the monitor speaker 6a or to repeat the processing of the voice message as facsimile data (step 612). If there is not (No in decision 612), monitor speaker 6a
Is turned off (process 613), the line is disconnected, and the process ends.

Thus, even if the voice storage device 30 includes a plurality of voice messages addressed to the own device, and the plurality of voice messages include both an original "voice" message and voice messages as facsimile data, Can be processed correctly.

Next, a sixth embodiment will be described.

In the sixth embodiment, the receiving facsimile apparatus 20b
Relates to a processing procedure after facsimile data from the transmission-side facsimile device 20a is received via the voice storage device 30.

In other words, according to the data communication method according to the fifth embodiment, the facsimile data from the transmitting facsimile device 20a can be reliably received by the receiving facsimile device 20b even through the voice storage device 30. Although it is possible, when communicating with the facsimile signal stored in the voice storage device 30, the timing may not match and an error may occur. Even if an error occurs when decoding image information on the receiving side as in the first to third embodiments, the coding method is changed to MH or MR code so that the same line can be returned to a normal state by repeating the same line. This is because even if the method is adopted, an error may occur due to the timing of various control signals.

In the sixth embodiment, the receiving-side facsimile device 20b stores the TSI registration data table shown in FIG. 17 in the RAM 5 in advance, and receives the facsimile data via the voice storage device 30. later,
The processing shown in FIG. 18 is performed. The table shown in FIG. 17 shows the transmission terminal identification signal TS transmitted from the transmission-side facsimile apparatus in the transmission control procedure of the G3 facsimile.
6 is a table in which the other party's TSI obtained as the information content of I and the other party's telephone number are associated with each other.

In FIG. 18, when facsimile data from the transmitting-side facsimile apparatus 20a is received via the voice storage device 30, if an error occurs during the reception, the system control unit 1 At times, the TS shown in FIG. 17 is based on the destination TSI obtained as the information content of the TSI of the signal S3 in FIG.
With reference to the I registration data table (process 701), it is checked whether there is a corresponding destination (decision 702).

If not (No in decision 702), the process is terminated. If there is a matching TSI (Yes in decision 702), an error report is created and RAM
5 (process 703), the communication control unit 7 dials the destination telephone number of the corresponding destination, and passes the error report developed in the RAM 5 to the communication control unit 7 for transmission (process 705). FIG. 19 shows an example of the content of the error report transmitted in the process 705.

As a result, the transmission-side facsimile apparatus 20 which is the transmission source of the facsimile data having a reception error
“a” receives an error report describing that the facsimile data did not reach the reception-side facsimile machine 20b, which is the final transmission destination, and records the error report on the plotter 3. Then, the user of the transmission-side facsimile machine 20a, which has viewed the recorded and output error report, can be prompted to perform appropriate post-processing such as retransmission of facsimile data.

In the embodiment described above, the present invention has been described by taking as an example the case where G3 facsimile units transmit and receive facsimile data via the voice storage service. However, the present invention is not limited to this. The same applies to the transmission and reception of binary data by BFT (Binary File Transfer), which is an extended function of G3 facsimile, and can be similarly applied to transmission control procedures other than G3 facsimile. Needless to say.

[0086]

According to the first aspect of the present invention, the calling data communication terminal device is not a called data communication terminal device to which data is to be transmitted, but a voice storage device. Even if is responded as a called terminal device, if the called station non-voice terminal identification signal corresponding to the transmitted calling station non-voice terminal identification signal is not received from the called terminal device within a predetermined time, When the called terminal device is recognized as the voice storage device and the called terminal device is assumed to be the called data communication terminal device that is the original destination, a response to the transmitted control signal is returned. Wait for the reception time of the control signal that will be received from the called terminal device as well as transmit the control signal sequentially to the called terminal device assuming that the control signal has been received, and perform data transmission. Do Therefore, as the calling side data communication terminal device, by transmitting data to the voice storage device as a voice message to be retrieved by the called side data communication terminal device which is the original destination, data The transmission can be completed. On the other hand, the called-side data communication terminal device, which is the original destination, then calls the voice storage device, and the calling-side data communication device as a voice message that is the content of the mailbox addressed to the device itself. Data can be received while adjusting the timing to the control signal from the communication terminal device.

According to the second aspect of the present invention, the calling-side data communication terminal device is not the called-side data communication terminal device that is the original destination to which data is to be transmitted.
Even if the voice storage device responds as the called terminal device, the called station non-voice terminal identification signal corresponding to the transmitted calling station non-voice terminal identification signal is not received from the called terminal device but registered in advance. When receiving the predetermined response voice from the called terminal device, the called terminal device is recognized as a voice storage device, and the called terminal device is the original destination. If it is assumed that the data communication terminal device is the called terminal, it waits for a reception time of a control signal that will be received from the called terminal device in response to the transmitted control signal, and receives the control signal. Assuming that the data transmission is performed while sequentially transmitting the control signal to the called terminal device, the calling data communication terminal device may eventually be the called data communication terminal which is the original destination. Equipment Ri as a voice message to be retrieved, by transmitting the data to the voice storage device can complete the data transmission. On the other hand, the called-side data communication terminal device, which is the original destination, then calls the voice storage device, and the calling-side data communication device as a voice message that is the content of the mailbox addressed to the device itself. Data can be received while adjusting the timing to the control signal from the communication terminal device. Also, in the actual voice storage service, the voice storage device generally transmits voice guidance as a predetermined response voice, and then shifts to voice storage operation. However, when determining whether the called terminal device is a voice storage device, based on whether to receive a predetermined response voice registered in advance from the called terminal device, As compared with the first aspect, it is possible to shift from the standard data transmission procedure to the data transmission procedure corresponding to the voice storage device more quickly.

According to the third aspect of the present invention, the called terminal device having the subscriber number whose data transmission has been normally performed by exchanging the control signal based on the predetermined transmission control procedure is performed on the called terminal device. The correspondence between the subscriber number of the terminal device and the communication timing information of the control signal exchanged with each other is stored in advance as a communication timing learning history table, and the called terminal device that has responded by calling the subscriber number Is a voice storage device, while transmitting a control signal at a timing based on the communication timing information corresponding to the subscriber number, while waiting for the reception equivalent time based on the communication timing information, it is the original destination. Then, the called data communication terminal device calls the voice storage device, and transmits the voice message as a voice message which is the content of the mailbox addressed to the own device. When receiving data while adjusting the timing to the control signal from the calling data communication terminal device, the control signal is received at a more accurate timing because the timing of the control signal is suitable for the own device. be able to.

According to the fourth aspect of the present invention, when the calling-side data communication terminal device recognizes the called-side terminal device as the voice storage device and transmits the data, the calling-side data communication terminal device may perform the data transmission after the completion of the data transmission or During the transmission, the fact that the data transmitted (currently transmitted) is directly transmitted to the user of the calling side data communication terminal device so that the fact is displayed or / and outputted as a report. , Or indirectly transmitted to the called data communication terminal device via the voice storage device.

According to the fifth aspect of the present invention, when the called data communication terminal device receives transmission data from the calling data communication terminal device stored as a voice message in the voice storage device, Since the data is received as it is under the communication conditions specified by the control signal from the calling data communication terminal device, the data from the called data communication terminal device is reliably received even through the voice storage device. be able to.

[0091] According to the invention of claim 6, the called data communication terminal device generates an error when receiving data from the calling data communication terminal device stored as a voice message in the voice storage device. If it occurs, the subscriber number corresponding to the calling terminal identification information obtained from the calling terminal identification signal as a control signal also received at the time of the reception, that is, a call is made to the calling side data communication terminal device. And send a report that an error has occurred. Therefore, in the data communication method according to claim 5, since the voice storage device intervenes in data exchange between the calling side data communication terminal device and the called side data terminal device, the predetermined transmission control procedure is performed. Since real-time negotiation cannot be performed based on the control signal, an error may easily occur when compared with a normal transmission procedure.However, even if an error occurs when data is received from the voice storage device, the fact is not considered. By transmitting a report to the calling data communication terminal device that is the data transmission source, appropriate measures such as retransmission of data can be taken.

[Brief description of the drawings]

FIG. 1 is a diagram showing a block configuration of a facsimile apparatus to which a data communication method according to an embodiment of the present invention is applied.

FIG. 2 is a diagram schematically illustrating a case where facsimile apparatuses according to the embodiment of the present invention transmit and receive facsimile data via a voice storage device.

FIG. 3 is a flowchart illustrating a procedure of a data communication method according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing a procedure of a voice storage service corresponding process in the data communication methods according to the first and second embodiments of the present invention.

FIG. 5 is a flowchart showing a procedure of a voice storage service corresponding process in the data communication method according to the first and second embodiments of the present invention, together with FIG.

FIG. 6 is a diagram showing a signal sequence between a transmission-side facsimile apparatus and a voice storage apparatus and a signal sequence between a voice-storage apparatus and a reception-side facsimile apparatus.

7 is a diagram showing, together with FIG. 6, a signal sequence between the transmission-side facsimile apparatus and the voice storage apparatus, and a signal sequence between the voice-storage apparatus and the reception-side facsimile apparatus.

FIG. 8 is a flowchart illustrating a procedure of a data communication method according to a second embodiment of the present invention.

FIG. 9 is a diagram showing a communication timing learning history table according to a third embodiment of the present invention.

FIG. 10 is a flowchart showing a procedure of a voice storage service corresponding process in the data communication method according to the third embodiment of the present invention.

11 is a flowchart showing a procedure of a voice storage service corresponding process in the data communication method according to the third embodiment of the present invention, together with FIG.

FIG. 12 is a flowchart showing a procedure of a voice storage service corresponding process in the data communication method according to the third embodiment of the present invention, together with FIG. 9 and FIG.

FIG. 13 is a flowchart illustrating a procedure of a data communication method according to a fourth embodiment of the present invention.

FIG. 14 is a diagram illustrating an example of a transmission result report according to the fourth embodiment of the present invention.

FIG. 15 is a flowchart illustrating a procedure of a data communication method according to a fifth embodiment of the present invention.

FIG. 16 is a flowchart showing a procedure of a data communication method according to a fifth embodiment of the present invention, together with FIG.

FIG. 17 is a diagram showing a TSI registration data table according to a sixth embodiment of the present invention.

FIG. 18 is a flowchart illustrating a procedure of a data communication method according to a sixth embodiment of the present invention.

FIG. 19 is a diagram illustrating an example of an error report according to a sixth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 System control part 2 Scanner 3 Plotter 4 ROM5 RAM 6 Operation display part 6a Monitor speaker 7 Communication control part 8 Voice recognition part 9 Encoding / decoding part 10 System bus 20, 20a, 20b Facsimile apparatus 30 Voice storage apparatus 40 Telephone network

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 1/32 H04N 1/32 E

Claims (6)

[Claims] 1. A calling data communication terminal device calls a subscriber number of a called terminal device via a telephone network, connects the line, and then sends a calling station non-voice terminal identification signal. A data communication terminal device capable of transmitting data to and from the called terminal device when the called station non-voice terminal identification signal corresponding to the calling station non-voice terminal identification signal is received from the called terminal device within a predetermined time. In the data communication method of performing data transmission while exchanging control signals based on a predetermined transmission control procedure with each other, the calling data communication terminal device is connected to a called terminal device via a telephone network. If the called station non-voice terminal identification signal corresponding to the calling station non-voice terminal identification signal transmitted after calling the subscriber number and connecting to the line is not received from the called terminal device within a predetermined time, , The called terminal device is A data communication that recognizes the voice storage device and thereafter transmits a control signal based on the predetermined transmission control procedure to the called terminal device, while allowing the called terminal device to perform data transmission with each other. If it is assumed that the terminal device is the terminal device, it waits for a reception time of a control signal that will be received from the called terminal device as a response to the transmitted control signal, and sequentially controls the device assuming that the control signal is received. A data communication method characterized by performing data transmission while transmitting a signal to the called terminal device. 2. The calling data communication terminal device calls the subscriber number of the called terminal device via the telephone network, connects the line, and sends out a calling station non-voice terminal identification signal. A data communication terminal device capable of transmitting data to and from the called terminal device when the called station non-voice terminal identification signal corresponding to the calling station non-voice terminal identification signal is received from the called terminal device within a predetermined time. In the data communication method of performing data transmission while exchanging control signals based on a predetermined transmission control procedure with each other, the calling data communication terminal device is connected to a called terminal device via a telephone network. The subscriber station does not receive the called station non-voice terminal identification signal corresponding to the calling station non-voice terminal identification signal transmitted after calling the subscriber number and connecting to the line. Receives a response voice from the called terminal device In this case, the called terminal device is recognized as a voice storage device, and thereafter, a control signal based on the predetermined transmission control procedure is transmitted to the called terminal device, while the called terminal device is Assuming that the terminal device is a data communication terminal device capable of mutually transmitting data, the terminal device waits for a reception equivalent time of a control signal that will be received from the called terminal device as a response to the transmitted control signal, and A data communication method characterized by performing data transmission while sequentially transmitting a control signal to the called terminal device assuming that the control signal has been received. 3. The calling station non-voice terminal identification signal which is transmitted after the calling data communication terminal device calls the subscriber number of the called terminal device via a telephone network and connects the line. The called terminal responds to the called station non-voice terminal identification signal with respect to the called terminal, and thereafter can perform data transmission while exchanging control signals based on a predetermined transmission control procedure. The correspondence between the subscriber number of the device and the communication timing information of the mutually exchanged control signals is stored in advance as a communication timing learning history table, while the subscriber number of the called terminal device is stored via the telephone network. When the called terminal device is recognized as a voice storage device when a call is made and the subscriber number is stored in the communication timing learning history table, the called terminal device Assuming that the devices are data communication terminals capable of transmitting data to each other, the reception equivalent is a time for waiting for a control signal that will be received from the called terminal in response to the transmitted control signal. The time and the transmission timing of the control signal are stored in the communication timing learning history table.
3. The data communication method according to claim 1, wherein the data communication method is determined based on communication timing information corresponding to the subscriber number. 4. The calling data communication terminal device, when recognizing the called terminal device as the voice storage device and transmitting data, displays that fact and / or outputs as a report. The data communication method according to any one of claims 1, 2 and 3, wherein: 5. The calling data communication terminal device calls the subscriber number of the called terminal device via the telephone network, connects the line, and sends out a calling station non-voice terminal identification signal. A data communication terminal device capable of transmitting data to and from the called terminal device when the called station non-voice terminal identification signal corresponding to the calling station non-voice terminal identification signal is received from the called terminal device within a predetermined time. In the data communication method of performing data transmission while exchanging control signals based on a predetermined transmission control procedure thereafter, the data communication terminal device as the called terminal device transmits to the voice storage device. And receiving a control signal and data from the calling side data communication terminal device in the data communication method according to any one of claims 1, 2 and 3, wherein the control signal and the data are stored as a voice message addressed to the own device. If,
A data communication method, comprising: accepting the control signal as it is without responding, and receiving the data as it is from the calling data communication terminal device under the communication conditions specified by the control signal. 6. The data communication terminal device as the called terminal device, when an error occurs when receiving data from the calling data communication terminal device stored as a voice message in the voice storage device. The calling terminal identification information obtained from the calling terminal identification signal as a control signal received at the same time as the reception is matched with the correspondence table between the calling terminal identification information and the subscriber number stored in advance and matched. 6. The data communication method according to claim 5, wherein when there is calling terminal identification information to be transmitted, a call is made to the corresponding subscriber number and a report indicating that an error has occurred is transmitted.