JP2003169198A - Equipment and method for facsimile communication - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate increase in communication changes caused by continuous communication regardless of the presence of communication rejection by immediately disconnecting a line to interrupt the communication owing to the absence of malfunction by keeping executing a V.8 protocol when receiving a V.34 communication rejection-informed JM signal from a receiver in the case of supporting the V.34 communication by a transmitter, receiving an ANSam signal from the receiver in call origination, and transmitting a V.34 communication-specifying CM signal from the transmitter. <P>SOLUTION: Facsimile communication equipment has: an ANSam signal receiving means for receiving the ANSam signal; a CM signal transmitting means for transmitting the CM signal; and a control means for interrupting communication upon transmitting the V.34 communication-specifying CM signal after receiving the ANSam signal and receiving the V.34 communication rejection-informed JM signal from an opposite receiver. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile communication apparatus, and in particular to ITU-T Recommendation V.2. The present invention relates to a facsimile communication device and a facsimile communication method capable of performing eight communication.

[0002]

2. Description of the Related Art In 1994, ITU-T Recommendation V. 8 is established, and this V.8. It is conceivable to apply the procedure defined in No. 8 to a facsimile machine.

This V. Facsimile apparatuses to which the procedure according to V.8 is applied include V.8. The facsimile device supporting the procedure and image transmission specified in No. 34 is targeted. Here, after that, V. 8, the V. Although there is description of 17, communication is not clearly decided.

[0004]

The transmitter is a V. It supports H.34 communication, receives an ANSam signal from a receiver at the time of making a call, and transmits V. When a CM signal specifying the H.34 communication is transmitted, the V.34 signal is transmitted from the receiver. When a JM signal instructed to communicate in V.17 is received, the V.17 signal after that is clearly transmitted.
8 Communication procedure is not decided.

Therefore, V. After performing 8 communication,
V. V.21 DIS signal. 8 If there is a reception function, and if a CI signal is transmitted, V. 17 There is a problem that communication may not be established. That is,
The receiver may malfunction.

In the present invention, the transmitter is a V. It supports H.34 communication, receives an ANSam signal from a receiver at the time of making a call, and transmits V. When a CM signal specifying the H.34 communication is transmitted, the receiver transmits V.34. 34 When receiving a JM signal instructed that communication is not possible,
V. Since there is no malfunction by executing 8 protocols, it is possible to immediately disconnect the line and disconnect the communication,
It is an object of the present invention to provide a facsimile communication device and a facsimile communication method in which communication is continued and communication costs are not increased even though communication is impossible.

[0007]

According to the present invention, ITU-T Recommendation V.50 is established with a partner device. In the fax communication device for executing the procedure defined in No. 8 and setting the image transmission mode executable with the partner apparatus based on the procedure, an ANSam signal receiving means for receiving an ANSam signal, and a CM. CM signal transmitting means for transmitting a signal, and the above A
After receiving the NSam signal, the V.V. C.34 communication is transmitted, and the receiver of the other party transmits V.34. 34 is a facsimile communication apparatus having a control means for interrupting communication when receiving a JM signal which cannot communicate.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION [First Embodiment] First, V. 1 recommended by ITU-T will be described. The procedure signal 8 will be described.

V. The procedure signal of 8 includes a calling menu signal (hereinafter referred to as “CM”) and a CM terminator (hereinafter referred to as “C”).
"J") and a common menu signal (hereinafter referred to as "JM").

The signal CM is a signal transmitted from the calling DCE, and the signal CM is mainly used to indicate the modulation schemes available in the calling DEC. The signal CM is
Recommendation V. The low-frequency channel V. 21
It is composed of a repetitive bit string of 300 bit / s modulated by (L).

The signal CJ is a signal indicating confirmation of detection of JM and end of CM. The signal CJ is 300 bits /
s V. It is modulated by 21 (L) and is composed of all three consecutive "0" octets including a start bit / s and a stop bit / s.

The signal JM is a signal transmitted from the response DEC, and this JM signal is mainly used to indicate the available modulation scheme common to the calling and response DECs.
Signal JM is based on Recommendation V.70. The high-frequency channel V. It is composed of a 300-bit / s repetitive bit string modulated by 21 (H).

Next, the coding formats of the CM, CJ and JM signals will be described.

FIG. 7 shows ITU-T Recommendation V.38. It is a figure which shows the structure of the preamble contained in the procedure signal of FIG.

A common coding format is used for CM, CJ, and JM, and each signal CM, CJ, and JM is composed of a repeating bit sequence. As shown in FIG. 7, one sequence is initially composed of ten "1" s, a 10-bit synchronization code following the sequence, and an octet carrying further information. Each octet has a leading start bit ("0")
And a subsequent stop bit ("1") are added.

Signal JM has the same V.V. Recommendation T.21 using H.21 (H) modulation. In order to avoid confusion with 30, the HDLC flag (01111110) is added to the bit arrangement.
Is imposed so that the symbol never appears.

Each octet belongs to a certain information category. This coding format allows the information categories to be extended for special applications if the simplicity of the signal is preserved by the majority of applications.

The first category of information in a sequence must be the calling function. Within the information categories that follow it, no particular order is specified. All information in a category is conveyed in one octet or, if necessary, one ordered octet sequence.

Next, the category octet will be described.

FIG. 8 shows the ITU-T Recommendation V.38. FIG. 8 shows a form of category octets that determines the information category of the procedure signal of FIG.

The category octet is the first octet generated in the new information category, and this octet contains a 4-bit code that determines the information category.

This format is organized as follows, with the displayed bits being transmitted in left-to-right order.

Start bit (0) b0 b1 b2 0 1 0 b6 b7 Stop bit (1) Bits b0 to b3 form a category in which b0 is the least significant bit, and bit b4 is as shown in FIG. It is set to "0" so that the flag does not hold. Also, b5
b7 is an option bit of the information category.

If three optional bits are insufficient to represent a particular category, any number of extended octets can immediately follow the category octet.

The format of this extended octet is configured as shown below.

Start bit (0) b0 b1 b2 0 1 0 b6 b7 Stop bit (1) Bits b0 to b2, b6, and b7 are five bits added to the category at that time. Bit b4 is used to distinguish extended octets from category octets,
It is set to "1" and b3 and b5 are set to "0" so that the flags are not established.

Next, a calling function, a modulation mode, a protocol, and G, which are information categories determined by the bits b0 to b3.
STN access will be described with reference to FIGS. 9 to 13, respectively.

FIG. 9 is a diagram showing an example of using the bits of the calling function octet.

The three optional bits in the calling capability octet are used to specify a particular calling capability, as shown in FIG.

FIG. 10 shows ITU-T Recommendation V.38. It is a figure which shows the modulation mode designated by the procedure signal of 8.

The V-series modulation modes usable in the GSTN are designated by three codes as shown in FIG.
The enabled setting is limited to cases where the modulation mode is available in the displayed calling function and one wishes to convey its capabilities to the remote DCE.

FIG. 11 shows ITU-T Recommendation V.38. It is a figure showing the code | symbol list inside a protocol category in the procedure signal of 8.

A code list inside the protocol category is shown in FIG. If the LAPM protocol code is indicated by CM and the responding DCE side receiving it also wants to use LAPM, the protocol octet indicating LAPM is also displayed in JM.

FIG. 12 shows ITU-T Recommendation V.38. 9 is a diagram illustrating a code indicating a cellular access for connecting to the GSTN of the procedure signal of FIG.

The symbols indicating cellular access to the GSTN are shown in FIG.

Next, V. The information bits of INFO0 defined in 34 will be described.

FIG. 13 is a diagram showing V.V. according to the ITU-T recommendation. 34
It is a figure which shows the bit definition of the INFO0 sequence of.

INFO0 is a signal used to indicate the transmission capability, and the bits of the signal sequence are defined as shown in FIG.

In the above embodiment, INFO0a is a signal sent from the called side, and INFO0c is a signal sent from the calling side.

Next, a first embodiment of the present invention will be described.

FIG. 1 is a block diagram showing the configuration of a facsimile apparatus FS1 which is a first embodiment of the present invention.

The facsimile apparatus FS1 has a telephone line 2a.
Network control unit (hereinafter referred to as NCU) connected to
Equipped with. The NCU 2 controls the connection of the telephone switching network such as connecting the telephone network to a line terminal used for data communication and the like, and switches to the data communication path to connect the telephone line 2a and the telephone 4 and The connection between the telephone line 2a and the hybrid circuit 6 is selectively switched.

The NCU 2 and the telephone 4 are connected by the signal line 2b, and the NCU 2 and the hybrid circuit 6 are connected by the signal line 2
It is connected by c. The switching operation of the NCU 2 is controlled by the control circuit 20 described later. When the control signal supplied from the control circuit 20 through the signal line 20a is "0", the telephone line 2a and the telephone 4 are connected. On the other hand, when the control signal is "1", the telephone line 2a and the hybrid circuit 6 are connected. In addition,
In the normal state, the connection between the telephone line 2a and the telephone 4 is selected.

The hybrid circuit 6 includes a transmission signal transmitted from the transmission system via the telephone line 2a and the telephone line 2a.
It separates from the received signal to the receiving system received via.

The transmission system includes a reading circuit 14 composed of an image pickup device such as a CCD (electrically coupled device) and an optical system.
ANSam sending circuit 10.

The reading circuit 14 sequentially reads an image of one line in the main scanning direction from the transmission original, and the data indicating the read image is output to the signal line 14a.

The ANSam transmission circuit 10 uses the signal line 20d.
When a signal of level "1" is applied from the control circuit 20 via the, the ANSam signal is output to the signal line 10a.
On the other hand, when a signal of level "0" is given from the control circuit 20 via the signal line 20d, the ANSam signal is not output to the signal line 10a.

The data output from the reading circuit 14 is given to the control circuit 20 via the signal line 14a. The control circuit 20 encodes the data taken in via the signal line 14a, and the encoded data is the signal line 20b.
Is output to the modulator / demodulator 8 via.

The modulator / demodulator 8 modulates the coded data from the signal line 20b to generate a modulated signal, and demodulates the received signal taken in from the hybrid circuit 6 via the signal line 6a. , Generate demodulated data. The modulation process and the demodulation process are the same as those described in ITU-T Recommendation V.3.
8, V.I. 21, V.I. 27 ter, V.I. 29, V.I. 17,
V. 34. Modulation by the modulator / demodulator 8,
The content of the demodulation process is controlled by the control circuit 2 via the signal line 20c.
It is instructed by a signal given from 0, and the transmission mode is determined by the instructed modulation and demodulation processing.

The modulated signal generated by the modulator / demodulator 8 is given to the adder circuit 12 via the signal line 8a. The adder circuit 12 adds the modulated signal from the modulator / demodulator 8 and the ANSam signal from the ANSam sending circuit 10. The added signal is output to the hybrid circuit 6 via the signal line 12a, and the hybrid circuit 6 sends the added signal as a transmission signal to the telephone line 2a via the NCU 2.

On the other hand, in the receiving system, the signal received from the partner device via the NCU 2 is output from the hybrid circuit 6 to the modulator / demodulator 8 via the signal line 6a.
The modulator / demodulator 8 demodulates the received signal taken in through the signal line 6a as described above to generate demodulated data. The demodulated data generated by the modulator / demodulator 8 is the signal line 8b.
Is given to the control circuit 20 via. Control circuit 20
Performs processing such as decoding the demodulated data, and the decoded data is given to the recording circuit 16 via the signal line 20e.

The recording circuit 16 sequentially records the image indicated by the decoded data line by line on the recording paper.

The data read by the reading circuit 14, the data obtained by encoding the data, the received data, and the data obtained by decoding the data are stored in the memory circuit 18 as necessary.
Stored in.

The control circuit 20 receives information from the other party's device and performs transmission control for transmitting the information to the other party's device.

The transmission control procedure that defines this transmission control includes ITU-T Recommendation V.34. 8, V.I. 21, V.I. 27te
r, V. 29, V.I. 17, V.I. 34 procedures are used.

Specifically, the ITU-
Recommendation V.T. In the facsimile apparatus FS1 which executes the procedure defined in No. 8 and sets the image transmission mode executable with the destination apparatus based on the procedure, the ANS
ANSa receiving means and CM signal transmitting means
m.m. signal after receiving V.m. C.34 communication is transmitted, and the receiver of the other party transmits V.34. When the JM signal of which communication of 34 is impossible is received, communication is interrupted.

In this case, the V. When the JM signal of which communication of 34 is impossible is received, the line is disconnected without transmitting the CJ signal. The JM signal from the receiver is
V. 21 communication is possible, and at least V.21 communication is possible. 1
7 or V.I. 29, or V.I. It is assumed that any one of the 27ter communication is possible.

Then, the V.50 from the receiver of the other party is transmitted. 34 The re-call that the JM signal that communication is impossible and the communication is cut off is
V. 8 without performing the procedure. 21 protocol, V.21. 1
7 or V.I. 29, or V.I. 27ter Performs high speed communication.

Specifically, the V.50 from the receiver of the other party is transmitted. 34 The re-calling in which the communication is interrupted due to the reception of the JM signal which is incapable of communication does not cause the CM signal to be transmitted in response to the reception of the ANSam signal. 21 for receiving the DIS signal. 21
Protocol, V.I. 17, or V.I. 29 or
V. 27ter Performs high speed communication.

2, 3, and 4 are flow charts showing the operation of the above embodiment.

In S2, a signal of level "0" is output to the signal line 20a to turn off CML, and in S4, the signal line 20 is output.
By outputting a signal of level "0" to d, AN
It is set not to output the Sam signal.

Next, in S6, it is determined whether or not the calling is selected. If the calling is not selected, the process proceeds to step S8, and if the calling is selected, the process proceeds to step S10.

In S8, other processing is executed, and after executing other processing, the process returns to step S2.

At S10, the level "1" is applied to the signal line 20a.
, The CML is turned on, the CI transmission FLG is set to 0 in S12, the calling circuit is used in S14 to call the specified destination, and the pre-procedure is executed in S16. .

In S18, it is determined whether or not the ANSam signal has been received. If the ANSam signal has been received, the process proceeds to step S24. If the ANSam signal has not been received, the process proceeds to step S20.

In S20, the V. No. 21 DIS signal is received, and V.21 is received. When the DIS signal of V.21 is received, the process proceeds to step S52, and the V. If the DIS signal of 21 is not received, the process proceeds to step S22.

At S22, it is determined whether the reception timer of the initial identification signal has timed out. If the reception timer of the initial identification signal has timed out, the process proceeds to step S34, and the reception timer of the initial identification signal has timed out. If not exceeded, the process proceeds to step S16.

In S24, the V. 21, V.I. 27ter,
V. 29 half duplex, V.I. 17, V.I. A CM signal designating half-duplex communication is transmitted. 8 JM signal is received.

In S28, the judgment is made based on the received JM signal, and the V. 34 half-duplex communication is possible, and V.34. If the half-duplex communication of V.34 is possible, the process proceeds to step S30, and V.34. If the half-duplex communication of 34 is not possible, the process proceeds to step S34.

In S30, the CJ signal is transmitted, in S32, INFO0c is transmitted, and thereafter, V. 34, the image transmission is executed, a signal of level “0” is output to the signal line 20a in S34, the CML is turned off, and in S36,
After waiting for 1 minute, a signal of level "1" is output to the signal line 20a and the CML is turned on in S38.

In S40, the calling circuit is used to call the same destination. In S42, the pre-procedure is executed, where AN is set.
Does not receive the Sam signal.

In S44, the V. No. 21 DIS signal is received, and V.21 is received. If the DIS signal of V.21 is received, the process proceeds to step S48 and the V. If the DIS signal of 21 is not received, the process proceeds to step S46.

In S46, it is determined whether or not the reception timer of the initial identification signal has timed out. If the reception timer of the initial identification signal has timed out, the process proceeds to step S2, and the reception timer of the initial identification signal has timed out. If not exceeded, the process proceeds to step S42.

At S48, the V. The DCS signal of the V.21 signal is transmitted. 21. V.21. Two
7ter or V.I. 29, or V.I. 17 image transmission is executed.

In S52, the V. It is determined whether or not there is a reception function of V. If there is a reception function of 8, step S5
Proceed to V.4. If there is no reception function of 8, step S4
Go to 8.

In S54, it is determined whether the CI transmission FLG is 0 or not. If the CI transmission FLG is 0, the process proceeds to step S56. If the CI transmission FLG is not 0, the process proceeds to step S48.

At S56, the CI transmission FLG is set to 1, and at S58, the CJ signal is transmitted.

Next, the transmission control procedure described above, that is, from the reception of the ANSam signal from the called terminal to the V.V. 34, the transmission control procedure up to the execution of image transmission will be described.

FIG. 5 is a diagram showing an example of a transmission control procedure applied to the facsimile apparatus FS1.

Referring to FIG. 5, a signal (ANSam signal 210
A signal obtained by modulating 0 Hz at 15 Hz) is transmitted. From the calling side, V. A CM signal by modulation based on 8 is transmitted, and the CM terminal notifies the called terminal of a transmission mode that can be executed during image transmission.

The called terminal receiving the CM signal notifies the calling terminal of the receivable transmission mode (V.34) among the transmission modes designated by the CM signal, and the JM signal is used for this notification. To be

The calling terminal which has received the JM signal notifies the called terminal of the transmission mode by transmitting the CJ signal.

After sending the CJ signal, that is, V. After 50 msec have passed from the completion of procedure 8, the calling terminal is 34, the execution of the procedure is started, and a line probing signal (INFO0c is added to the head) for checking the status of the telephone line 2a is transmitted. The called terminal sends a signal (INFO0a is added to the beginning) in response to the line probing signal from the calling terminal, and this signal sends the subsequent sending level, amplitude level correction, and transmission baud rate. Notify the call terminal.

The calling terminal sends a long training signal after 50 msec has passed after sending the line proving signal, and the called terminal adjusts the equalizer of the modem based on the long training signal. Perform timing detection, etc.

The calling terminal sends a parameter exchange signal after 50 msec has passed from the sending of the long training signal. The called terminal sends a signal in response to the parameter exchange signal, and notifies the calling terminal of subsequent link correction and bit rate by this signal.

After responding to the parameter exchange signal, the called terminal sends out CSI and DIS signals, and the T from the calling terminal is transmitted.
Flags are sent until the SI and DCS signals are received, and TS
After receiving the I and DCS signals, the CFR signal is transmitted. The calling terminal, after receiving the CSI and DIS signals,
The TSI and DCS signals are transmitted, and the flag is transmitted until the CFR signal from the called terminal is received.

The calling terminal 50m after sending the flag
After the lapse of sec, V. The image transmission by 34 is started, and the image signal is transmitted. 50msec after image signal transmission is completed
After the passage, V. 34, the PPS-MPS signal is transmitted from the calling terminal and the flag is transmitted until the MCF signal from the called terminal is received. The called terminal sends out the MCF signal after receiving the PPS-MPS signal.

After 50 msec has passed from the sending of the flag, V. Image transmission by 34 is executed, and the image signal is again sent from the calling terminal. When 50 msec has elapsed after the image signal transmission was completed, the V. 34, the calling terminal sends a PPS-EOP signal, and the MC
The flag is transmitted until the F signal is received. The called terminal sends out the MCF signal after receiving the PPS-EOP signal. After that, the same procedure as above is repeated until the image transmission is completed.

Next, in the above embodiment, the reception of the ANSam signal from the called terminal causes the V.V. In the procedure of V.8. 34
When communication is not possible, the line is disconnected, and if the call is reissued, ANS
Am. 21 for the DIS signal. A transmission control procedure for transmitting the DCS signal 21 will be described.

FIG. 6 is a diagram showing another example of the transmission control procedure applied to the facsimile apparatus FS1.

Referring to FIG. 6, first, the called terminal A
NSam is transmitted, and the calling terminal sends V.N.S. 34 C capable of communication
Transmit M signal. At this time, the receiver receives the V.V. 17 JM signal that can communicate (V.34 communication is not possible) is transmitted. On the basis of the reception of the JM signal, the calling terminal immediately disconnects the line (disconnects at the timing of FIG. 6) in the first embodiment.

After a lapse of a predetermined time, the call is recalled, the V.S. 21 for the DIS signal. 21 TSI / DCS signals,
V. 21 procedure, V.I. 27ter or V.I. 29, or V.I. 17-screen transmission is executed.

[Second Embodiment] The second embodiment of the present invention is the same as the first embodiment except that the receiver V. This is an example in which when the JM signal of which communication is impossible is received, the line is disconnected after transmitting the CJ signal.

That is, the line is disconnected at the timing shown in FIG. 6, and the sequence for re-calling starts.

FIG. 14 is a flow chart showing the operation of the second embodiment of the present invention.

FIG. 14 is a flowchart showing only the operation different from the flowcharts shown in FIGS.

S60 represents NO in step S28,
S62 is a V. 8 represents the transmission of 8 CJ signals.

S64 represents step S34.

[Third Embodiment] The third embodiment of the present invention is the same as the first embodiment except that the receiver V.3 is used. 34, the CJ signal is transmitted when the JM signal which cannot be communicated is received. In this embodiment, the line is disconnected after the DIS signal of 21 is received.

That is, at the timing shown in FIG. 6, the line is disconnected and the sequence for re-calling starts.

FIG. 15 is a flow chart showing the operation of the third embodiment.

FIG. 15 is a flowchart showing only different parts of the control operation shown in FIGS.

S70 shows NO in S28, and S72
Is V. 8 CJ signal is transmitted, and S74 sends V. 21 represents reception of the DIS signal, and S76 represents S34.

[Fourth Embodiment] The fourth embodiment of the present invention is the same as the first embodiment except that the receiver V.2 is used. 34, the CJ signal is transmitted, and the V.34 signal from the partner receiver is transmitted. 21 is received and the V.21 signal is received. In this embodiment, the line is disconnected after transmitting the DCN signal 21.

That is, in the fourth embodiment, the line is disconnected at the timing shown in FIG. 6 and the sequence for re-calling is started.

FIG. 16 is a flow chart showing the operation of the fourth embodiment.

In FIG. 16, only operations different from the control operations shown in FIGS. 2 to 4 are shown.

S80 represents NO in S28, and S82.
Is V. 8 represents transmission of a CJ signal, and S84 is a V.8 signal. Two
1 indicates reception of a DIS signal, and S86 is a V.1 signal. 21 D
CN signal transmission is represented, and S88 represents S34.

[0109]

According to the invention described in claims 1 and 10, the transmitter is a V. It supports H.34 communication, receives an ANSam signal from a receiver at the time of making a call, and transmits V. When a CM signal specifying 34 communication is transmitted, from the receiver,
V. 34, when the JM signal instructed that the communication is impossible is received, the V. Since it does not malfunction by executing 8 protocols, you can immediately disconnect the line and disconnect the communication, and continue the communication even though the communication is impossible, and use it without increasing the communication cost. Has the effect of being easy.

According to the invention described in claims 2 and 11, the transmitter is a V. It supports H.34 communication, receives an ANSam signal from a receiver at the time of making a call, and transmits V. When a CM signal specifying the H.34 communication is transmitted, the receiver transmits V.34.
34 When a JM signal instructing that communication is impossible is received, the line can be immediately disconnected and the communication can be disconnected. Therefore, even though communication is impossible, communication is continued and communication costs are high. It has the effect of never happening.

According to the invention described in claims 3 and 12, the transmitter is V. It supports H.34 communication, receives an ANSam signal from a receiver at the time of making a call, and transmits V. When a CM signal specifying the H.34 communication is transmitted, the receiver transmits V.34.
34 When receiving a JM signal instructing that communication is not possible, disconnecting the line after transmitting the CJ signal,
Since the communication can be disconnected, the communication is continued even though the communication is impossible, and the communication cost is not increased. If the modem etc. automatically executes 8,
Since the line is disconnected after the CJ signal is transmitted, there is an effect that control is easy.

According to the invention described in claims 4 and 13, the transmitter is V. It supports H.34 communication, receives an ANSam signal from a receiver at the time of making a call, and transmits V. When a CM signal specifying the H.34 communication is transmitted, the receiver transmits V.34.
34, when a JM signal instructed that communication cannot be performed is received, the C.I. 21 DI
After receiving the S signal, the line can be disconnected to disconnect the communication. Therefore, even though the communication is impossible, the communication is continued and the communication cost does not increase. Since the number of protocols has been changed to 21, there is an effect that the initial identification timer is surely timed out and the line can be disconnected.

According to the invention described in claims 5 and 14, the transmitter is a V. It supports H.34 communication, receives an ANSam signal from a receiver at the time of making a call, and transmits V. When a CM signal specifying the H.34 communication is transmitted, the receiver transmits V.34.
34, when a JM signal instructed that communication cannot be performed is received, the C.I. 21 DI
After receiving the S signal, V.S. After transmitting the DCN signal of 21, the line is disconnected and the communication is disconnected. Therefore, even though the communication is impossible, the communication is continued and the communication cost is easy to use without increasing the communication cost. V. 21 protocol, and further V.21. Since the DCN signal No. 21 is received, there is an effect that the line can be immediately disconnected.

According to the invention described in claims 6 and 15, the V. The JM signal of No. 8 becomes clear, and there is an effect that the design is easy.

According to the invention described in claims 7, 8, 9, 16, 17, and 18, the transmitter is a V. Supports 34 communications,
Upon making a call, the ANSam signal from the receiver is received, and the transmitter transmits V.S. When a CM signal specifying the H.34 communication is transmitted, the receiver transmits V.34. 34 When a JM signal instructing that communication is not possible is received, the line is disconnected at a predetermined timing, and a re-call after a predetermined time has passed is V.34. V.8 without transmitting the CM signal. 21 can respond to the DIS signal, and can reliably perform V.21. 21 protocol, V.21. 17, or
V. 29, or V.I. The effect is that high-speed communication of 27ter can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a facsimile apparatus FS1 which is a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the above embodiment.

FIG. 3 is a flowchart showing the operation of the above embodiment.

FIG. 4 is a flowchart showing the operation of the above embodiment.

FIG. 5 is a diagram showing an example of a transmission control procedure applied to the facsimile apparatus FS1.

FIG. 6 is a diagram showing another example of a transmission control procedure applied to the facsimile apparatus FS1.

FIG. 7: ITU-T Recommendation V.3 It is a figure which shows the structure of the preamble contained in the procedure signal of FIG.

FIG. 8 ITU-T Recommendation V. FIG. 8 shows a form of category octets that determines the information category of the procedure signal of FIG.

FIG. 9 is a diagram illustrating a usage example of bits of a calling function octet.

FIG. 10: ITU-T Recommendation V.3 It is a figure which shows the modulation mode designated by the procedure signal of 8.

FIG. 11 ITU-T Recommendation V.3 It is a figure showing the code | symbol list inside a protocol category in the procedure signal of 8.

FIG. 12: ITU-T Recommendation V.3 8 Procedure signal GSTN
FIG. 5 is a diagram illustrating a code indicating a cellular access to be connected to a mobile station.

FIG. 13 is a diagram showing V. 1 according to ITU-T recommendation. 34 INFO0
It is a figure which shows the bit definition of a sequence.

FIG. 14 is a flowchart showing the operation of the second exemplary embodiment of the present invention.

FIG. 15 is a flowchart showing the operation of the third embodiment.

FIG. 16 is a flowchart showing the operation of the fourth embodiment.

[Explanation of symbols]

FS1 ... Facsimile device, 4 ... phone, 10 ... ANSam sending circuit, 14 ... reading circuit, 16 ... Recording circuit, 18 ... Memory circuit, 20 ... Control circuit.

Claims (18)

[Claims] 1. An ITU-T Recommendation V.3 with a partner device.
And a ANSam signal receiving means for receiving an ANSam signal in a facsimile communication apparatus which executes the procedure defined in No. 8 and sets an image transmission mode executable with the destination apparatus based on the procedure.
CM signal transmitting means for transmitting a CM signal; ANSa
m.m. signal after receiving V.m. C.34 communication is transmitted, and the receiver of the other party transmits V.34. A control means for interrupting the communication when receiving a JM signal of which communication is impossible in 34;
A facsimile communication apparatus comprising: 2. The apparatus according to claim 1, wherein the V. 34 communication is impossible J
A facsimile communication apparatus characterized by disconnecting a line without transmitting a CJ signal when receiving an M signal. 3. The apparatus according to claim 1, wherein the V.V. 34 communication is impossible J
A facsimile communication apparatus characterized by disconnecting the line after transmitting a CJ signal when receiving an M signal. 4. The apparatus according to claim 1, wherein the V.V. 34 communication is impossible J
When the M.M. signal is received, the C.J. signal is transmitted and the V.M. A facsimile communication apparatus characterized by disconnecting the line after receiving a DIS signal of 21. 5. The apparatus according to claim 1, wherein the V. 34 communication is impossible J
When the M.M. signal is received, the C.J. signal is transmitted and the V.M. 21 is received and the V.21 signal is received. A facsimile communication device characterized in that the line is disconnected after transmitting a DCN signal of 21. 6. The JM signal from the counterpart receiver according to any one of claims 1 to 5, 21 communication is possible, and V.21 communication is possible. 17, V.I. 29, V.I. 27
A facsimile communication device capable of performing any one of ter communication. 7. The V.1 from the receiver of the other party according to claim 1, wherein: 34 Communication is not possible J
The re-initiated call, which has been disconnected due to the reception of the M signal, is 8 without performing the procedure. 21 protocol, V.21. 17, or
V. 29, or V.I. 27ter A facsimile communication device that executes high-speed communication. 8. The V.5 from the receiver of the other party according to claim 7, 34 Communication is not possible J
A facsimile communication device characterized in that a re-call that receives an M signal and is disconnected is not sent a CM signal in response to the reception of an ANSam signal. 9. The method according to claim 7 or 8, wherein the V.V. 34 Communication is not possible J
The re-initiated call, which has been disconnected due to the reception of the M signal, does not transmit the CM signal in response to the reception of the ANSam signal. 21 for receiving the DIS signal. 21 protocol, V.21.
17, or V.I. 29, or V.I. 27ter A facsimile communication device that executes high-speed communication. 10. The ITU-T Recommendation V.3 with a partner device. In the facsimile communication method for executing the procedure defined in No. 8 and setting the image transmission mode executable with the partner apparatus based on the procedure, an ANSam signal receiving step of receiving an ANSam signal;
A CM signal transmitting step of transmitting a CM signal;
m.m. signal after receiving V.m. C.34 communication is transmitted, and the receiver of the other party transmits V.34. A control step of interrupting the communication when receiving a JM signal indicating that communication is impossible in 34;
A facsimile communication method comprising: 11. The apparatus according to claim 10, wherein the V. 34 communication is impossible J
A facsimile communication method characterized in that, when an M signal is received, the line is disconnected without transmitting a CJ signal. 12. The receiver according to claim 10, wherein the V. 34 communication is impossible J
A facsimile communication method characterized by disconnecting the line after transmitting a CJ signal when receiving an M signal. 13. The apparatus according to claim 10, wherein the V.V. 34 communication is impossible J
When the M.M. signal is received, the C.J. signal is transmitted and the V.M. A facsimile communication method characterized by disconnecting the line after receiving a DIS signal of 21. 14. The receiver according to claim 10, wherein the V. 34 communication is impossible J
When the M.M. signal is received, the C.J. signal is transmitted and the V.M. 21 is received and the V.21 signal is received. A facsimile communication method characterized by disconnecting the line after transmitting a DCN signal of 21. 15. Any one of claims 10 to 14.
In the section, the JM signal from the receiver of the other party is 21 communication is possible, and V.21 communication is possible. 17, V.I. 29, V.I. 27
A facsimile communication method characterized in that any one of ter communication is possible. 16. The method according to any one of claims 10 to 15.
In the section above, the V. 34 Communication is not possible J
The re-initiated call, which has been disconnected due to the reception of the M signal, is 8 without performing the procedure. 21 protocol, V.21. 17, or
V. 29, or V.I. 27ter Facsimile communication method characterized by executing high-speed communication. 17. The video signal according to claim 16, from the receiver of the other party. 34 Communication is not possible J
A facsimile communication method characterized in that a CM call is not transmitted in response to receiving an ANSam signal when a call is re-established due to disconnection of the M signal. 18. The method according to claim 16 or 17, wherein the V.V. 34 Communication is not possible J
The re-initiated call, which has been disconnected due to the reception of the M signal, does not transmit the CM signal in response to the reception of the ANSam signal. 21 for receiving the DIS signal. 21 protocol, V.21.
17, or V.I. 29, or V.I. 27ter Facsimile communication method characterized by executing high-speed communication.