JP2004023125A - Facsimile machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a shift from a V.8 protocol and to enable a service provider to surely perform facsimile communication and data communication when performing communication that is not higher than V.17 for calling a service provider that supports FAX communication and data communication, and to make a call from V.21 procedures without executing conventional V.8 procedures and accordingly, to surely perform picture transmission that is not higher than V.17 when performing communication that is not higher than V.17 between facsimile termnals. <P>SOLUTION: The facsimile machine has an ANSam signal receiving means, a CM signal transmitting means, a means for registering specified telephone number information, and a communication protocol changing means for changing communication protocols when facsimile communication is selected between the case of making a call to a specified telephone number and making a call to a telephone number other than the specified telephone number. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a facsimile communication system, and particularly to ITU-T Recommendation V. 8 relates to a facsimile communication system capable of communication.
[0002]
[Prior art]
In 1994, in ITU-T, Recommendation V. 8 holds, and this V.8 is established. It is conceivable to apply the procedure specified in 8 to a facsimile machine. This V. As a facsimile apparatus to which the procedure according to V.8 is applied, V.V. The facsimile apparatus which supports the procedure and image transmission specified in 34 is targeted. Here, after that, 8, the V.I. It was also determined for communications of 17 or less.
[0003]
On the other hand, V. 90, V.I. In the communication procedure of V.92, after the call connection, Eight procedures are performed.
[0004]
[Problems to be solved by the invention]
In general, V.F. When performing image transmission of 17 or less, 8 without performing the procedure. After 21 procedures, 17, or V.I. 29, or V.I. In many cases, 27 ter image transmission is executed.
[0005]
This is the Before the 8 procedures are decided, This is because a large number of facsimile machines that perform image transmission of 17 or less are shipped to the world. Therefore, V.F. When performing image transmission of 17 or less, 8 without performing the procedure. After 21 procedures, 17, or V.I. 29, or V.I. It is preferable to perform 27 ter image transmission.
[0006]
However, when the service provider supports both data communication and facsimile communication, it is preferable that facsimile communication and data communication are clearly identified without any communication trouble. However, the calling terminal calls the service provider and performs facsimile communication. When executing communication, the communication between the facsimile terminals and the protocol are not changed. When performing image transmission of 17 or less, Since the F.8 procedure is not executed, facsimile communication and data communication are performed according to There is a problem that it cannot be clearly identified in eight steps.
[0007]
The present invention provides a method for calling a service provider that supports FAX communication and data communication. When communication of 17 or less is executed, 8 can be shifted from the F.8 protocol, and the service provider can reliably execute the FAX communication and the data communication, while the V.8 communication between the facsimile terminals. 17 or less, the conventional V.17 communication is used. 8 without performing the procedure. 21 procedure, and therefore, It is an object of the present invention to provide a facsimile apparatus capable of reliably executing image transmission of 17 or less.
[0008]
[Means for Solving the Problems]
The present invention is based on the ITU-T Recommendation V.2 between the destination device. 8 in a facsimile communication system for setting an image transmission mode executable with the destination apparatus based on the procedure, the ANSam signal receiving means, the CM signal transmitting means, Means for registering specific telephone number information, and a communication protocol for changing a communication protocol when facsimile communication is selected when calling a specific telephone number and when calling other telephone numbers Facsimile machine having a change unit.
[0009]
Embodiments and Examples of the Invention
[First Embodiment]
First, V.1 recommended by the ITU-T. The procedure signal No. 8 will be described.
[0010]
V. The procedure signal 8 includes a calling menu signal (hereinafter, referred to as CM), a CM terminator (hereinafter, referred to as CJ), and a common menu signal (hereinafter, referred to as JM).
[0011]
CM is a signal transmitted from the calling DCE, and this signal is mainly used to indicate a modulation scheme available in the calling DEC. CM is advisory V. 21 defined in the low-frequency channel V.21. It consists of a 300-bit / s repetitive bit string modulated by 21 (L).
[0012]
CJ is a signal indicating confirmation of detection of JM and end of CM. CJ has a V.I. of 300 bit / s. It is modulated by 21 (L), includes a start bit / s and a stop bit / s, and is composed of three consecutive “0” octets.
[0013]
JM is a signal transmitted from the response DEC, and this signal is mainly used to indicate an available modulation scheme common to the calling and the response DEC. JM, Recommendation V. 21 is defined by the high-frequency channel V.21. It consists of a 300 bit / s repetitive bit string modulated by 21 (H).
[0014]
Next, the encoding format of each of the CM, CJ, and JM signals will be described.
[0015]
FIG. 8 is a diagram illustrating a configuration of a preamble included in a procedure signal of FIG.
[0016]
A common encoding 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. 12, one sequence is composed of first 10 "1s" followed by a 10-bit synchronization code, and octets carrying further information. A preceding start bit ("0") and a subsequent stop bit ("1") are added to each octet.
[0017]
The same V.M. Recommendation T.21 using H.21 (H) modulation. In order to avoid confusion with 30, a bit constraint is imposed on the bit arrangement such that the HDLC flag (01111110) never appears.
[0018]
Each octet belongs to one information category. This coding format allows the information category to be extended for special applications if the simplicity of the signal is preserved by the majority of applications.
[0019]
The first information category of a sequence must be the calling function. The order of the information categories following it is not specified. All information in a category is conveyed in one octet or, if necessary, one ordered octet sequence.
[0020]
Next, the category octet will be described.
[0021]
FIG. 13 shows ITU-T Recommendation V. 8 is a diagram showing a category octet form for determining an information category of a procedure signal of No. 8. FIG.
[0022]
The category octet is the first octet to be generated in a new information category, and includes a 4-bit code that determines the information category.
[0023]
This format is configured as follows, and the indicated bits are transmitted from left to right.
[0024]
Start bit (0) b0 b1 b2 0 10 b6 b7 Stop bit (1)
Bits b0 to b3 form a category with b0 as the least significant bit, as shown in FIG. 13, and bit b4 is set to "0" so that the flag is not established. B5 to b7 are option bits of the information category.
[0025]
If three option bits are not sufficient to represent a particular category, any number of extended octets can immediately follow the category octet.
[0026]
The format of this extended octet is configured as shown below.
[0027]
Start bit (0) b0 b1 b2 0 10 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 set to "1" to distinguish extended octets from category octets, and bits b3 and b5 are set to "0" so that the flag is not established.
[0028]
Next, a calling function, a modulation mode, a protocol, and a GSTN access, which are information categories determined by bits b0 to b3, will be described.
[0029]
FIG. 14 is a diagram showing an example of using bits of the calling function octet.
[0030]
Three option bits in the calling function octet are used to specify a specific calling function defined by bit5, bit6, and bit7, as shown in FIG.
[0031]
FIG. FIG. 14 is a diagram showing a modulation mode designated by a procedure signal of No. 8;
[0032]
A V-series modulation mode that can be used in the GSTN is specified by three codes as shown in FIG. The setting to be available is limited only if the modulation mode is available in the indicated calling function and if one wishes to communicate the capability to the remote DCE.
[0033]
FIG. 16 shows ITU-T Recommendation V. 8 is a diagram illustrating a list of codes in a protocol category of a procedure signal of No. 8. FIG.
[0034]
A list of codes in the protocol category is shown in FIG. If the LAPM protocol code is indicated by CM, and the responding DCE receiving the same wants to use LAPM, the JM also displays a protocol octet indicating LAPM.
[0035]
FIG. 17 shows ITU-T Recommendation V. 8 is a diagram illustrating a code indicating a cellular access connected to the GSTN of a procedure signal of No. 8. FIG.
[0036]
The code indicating the cellular access connecting to the GSTN is shown in FIG.
[0037]
Next, V. The information bits of INFO0 specified in 34 will be described.
[0038]
FIG. 34 is a diagram illustrating bit definitions of an INFO0 sequence of No. 34. FIG.
[0039]
INFO0 is a signal used to indicate the transmission capability, and the bits of the signal sequence are defined as shown in FIG.
[0040]
In this embodiment, INFO0a is a signal transmitted from the called side, and INFO0c is a signal transmitted from the calling side.
[0041]
FIG. 1 is a block diagram showing a configuration of a facsimile machine FS1 according to a first embodiment of the present invention.
[0042]
The facsimile apparatus FS1 includes a network control device (hereinafter, referred to as NCU) 2 connected to a telephone line 2a. The NCU 2 controls connection of a telephone switching network such as connecting a telephone network to a line terminal for use in data communication and the like, switches to a data communication path, connects the telephone line 2a to the telephone 4, and connects the telephone line. The connection between the hybrid circuit 2a and the hybrid circuit 6 is selectively switched.
[0043]
NCU 2 and telephone 4 are connected by signal line 2b, and NCU 2 and hybrid circuit 6 are connected by signal line 2c. The switching operation of the NCU 2 is controlled by a control circuit 20 described later. When the control signal provided from the control circuit 20 is "0" via the signal line 20a, 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 the normal state, the connection between the telephone line 2a and the telephone 4 is selected.
[0044]
The hybrid circuit 6 separates a transmission signal from the transmission system transmitted via the telephone line 2a from a reception signal to the reception system received via the telephone line 2a.
[0045]
The transmission system includes a reading circuit 14 including an imaging device such as a CCD (Electrically Coupled Device) and an optical system, and an ANSam sending circuit 10.
[0046]
The reading circuit 14 sequentially reads one line of the image in the main scanning direction from the transmission original, and data indicating the read image is output to the signal line 14a.
[0047]
The ANSam sending circuit 10 outputs an ANSam signal to the signal line 10a when a signal of level "1" is given from the control circuit 20 via the signal line 20d. 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.
[0048]
The data output from the reading circuit 14 via the signal line 14a is provided to the control circuit 20. The control circuit 20 performs an encoding process on the data captured via the signal line 14a, and outputs the encoded data to the modem 8 via the signal line 20b.
[0049]
The modulator / demodulator 8 performs a modulation process on the coded data from the signal line 20b to generate a modulation signal, and also performs a demodulation process on the reception signal fetched from the hybrid circuit 6 via the signal line 6a to perform demodulation. Generate data. This modulation processing and demodulation processing are described in ITU-T Recommendation V. 8, V.I. 21, V.I. 27ter, V.I. 29, V.I. 17, V.I. 34 half duplex, V.I. 32, V.I. 32 bis, V.I. 34 full duplex, V.I. 90. The contents of the modulation and demodulation processing by the modulator / demodulator 8 are specified by a signal provided from the control circuit 20 via the signal line 20c, and the transmission mode is determined by the specified modulation and demodulation processing.
[0050]
The modulation signal generated by the modulator / demodulator 8 is provided to the addition circuit 12 via the signal line 8a. The addition circuit 12 adds the modulation signal from the modulator / demodulator 8 and the ANSam signal from the ANSam transmission circuit 10.
[0051]
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.
[0052]
On the other hand, in the receiving system, a signal received from the partner device via the NCU 2 is output from the hybrid circuit 6 to the modem 8 via the signal line 6a. As described above, the modulator / demodulator 8 performs demodulation processing on the received signal fetched via the signal line 6a to generate demodulated data. Demodulated data generated by the modulator / demodulator 8 is supplied to the control circuit 20 via the signal line 8b. The control circuit 20 performs processing such as decoding on the demodulated data, and the decoded data is provided to the recording circuit 16 via the signal line 20e.
[0053]
The recording circuit 16 sequentially records the image indicated by the decoded data line by line on a recording sheet.
[0054]
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.
[0055]
The control circuit 20 receives information from the partner device and performs transmission control for transmitting information to the partner device.
[0056]
As a transmission control procedure that defines the above-mentioned transmission control, ITU-T Recommendation V. 8, V.I. 21, V.I. 27ter, V.A. 29, V.S. 17, V.I. 34 half duplex, V.I. 32, V.I. 32 bis, V.I. 34 full duplex, V.I. 90 procedures are used.
[0057]
The control circuit 20 specifically communicates with the ITU-T Recommendation V.4 with the destination device. 8 in a facsimile communication system for setting an image transmission mode executable with the destination device based on the procedure, the ANSam signal receiving means, the CM signal transmitting means, the specific telephone number It has means for registering information, and changes the communication protocol when facsimile communication is selected when a call is made to a specific telephone number and when a call is made to another telephone number. Here, when a call is made to a specific telephone number by facsimile communication, the V.V. 8 after performing procedure 8. 21 procedures, V.I. 17, or V.I. 29, or V.I. Execute 27 ter high-speed communication. When a call is made to a phone number other than the specific telephone number, 8 without performing the procedure. 21 procedures, V.I. 17, or V.I. 29, or V.I. Execute 27 ter high-speed communication.
[0058]
Here, as a modulation / demodulation function of facsimile image transmission, V.40 is used. 21, V.I. 17, or V.I. 29, or V.I. 27ter. Also, when a call is made to a specific telephone number, data communication is possible.
[0059]
FIGS. 2, 3, 4, 5, 6, 7, and 8 are flowcharts showing the operation of the facsimile machine FS1.
[0060]
In step S2, a signal of level "0" is output to the signal line 20a to turn off the CML. In step S4, a signal of level "0" is output to the signal line 20d so that the ANSam signal is not output. Set.
[0061]
In step S6, the information of the operation unit is input, and it is determined whether or not the registration of the service provider's telephone number is selected. If the registration of the service provider's telephone number is not selected, the process proceeds to step S10, and the service provider's telephone When the registration of the number is selected, the process proceeds to step S8, and the telephone number of the service provider is registered in the memory 18.
In step S10, it is determined whether a call is selected. If a call is not selected, step S12 is executed, and if a call is selected, step S14 is executed.
[0062]
In step S12, other processing is executed. After executing other processing, the process returns to step S2 again. In step S14, a signal of level "1" is output to the signal line 20a, and the CML is turned on.
[0063]
In step S16, it is determined whether calling to the service provider has been selected. If the call to the service provider is not selected (if facsimile communication with a general destination is selected), the process proceeds to step S44, and if the call to the service provider is selected, step S18 is executed.
[0064]
In step S18, a call is made to the telephone number of the service provider using the calling circuit.
[0065]
In step S20, information on the operation unit is input, and it is determined whether or not data communication has been selected. If data communication has been selected, the process proceeds to step S22, and if data communication has not been selected (facsimile communication is not performed). If it is selected), the process proceeds to step S24.
[0066]
A step S22 executes data communication. In step S24, the timer T1 is set to 35 seconds.
[0067]
In step S26, it is determined whether or not the ANSam signal has been received. If the ANSam signal has been received, the process proceeds to step S32. If the ANSam signal has not been received, the process proceeds to step S28.
[0068]
In step S28, V.V. It is determined whether or not the DIS signal of V.21 has been received. If the DIS signal has been received, the process proceeds to step S40. If the DIS signal has not been received, the process proceeds to step S30.
[0069]
In step S30, it is determined whether or not the timer T1 has timed out. If the timer T1 has timed out, the process proceeds to step S2. If the timer T1 has not timed out, the process proceeds to step S26.
[0070]
In step S32, V. 21, V.I. 27ter, V.I. 29 half duplex, V.I. 17 is transmitted, and in step S34, the CM signal is transmitted. 8 is received, the CJ signal is transmitted in step S36, and the V.8 signal is transmitted in step S38. 21 at step S40. 21 TSI / DCS signals are transmitted. 21, V.21 procedure. 27ter or V.I. 29, or V.I. In step S44, a call is made to the designated destination using the calling circuit, and in step S46, the timer T1 is set to 35 seconds.
[0071]
In step S48, V.V. It is determined whether or not the DIS signal of V.21 has been received. If the DIS signal has been received, the process proceeds to step S40. If the DIS signal has not been received, the process proceeds to step S50.
[0072]
In step S50, it is determined whether or not the timer T1 has timed out. If the timer T1 has timed out, the process proceeds to step S2. If the timer T1 has not timed out, the process proceeds to step S48.
[0073]
7 and 8 are diagrams showing the incoming call control of the service provider in the above embodiment.
[0074]
In step S92, a signal of level “0” is output to the signal line 20a, and the CML is turned off.
[0075]
Next, in a step S94, it is determined whether or not the incoming call is selected. If an incoming call has not been selected, step S96 is executed, and if an incoming call has been selected, step S97 is executed.
[0076]
In step S96, other processing is executed. After executing other processing, the process returns to step S92 again. In step S97, a signal of level "1" is output to the signal line 20a, and the CML is turned on. In step S98, , The timer T1 is set to 35 seconds, in step S100, the timer is set to 5 seconds, and in step S102, the ANSam signal is output by outputting a signal of level “1” to the signal line 20d. I do.
[0077]
In step S104, it is determined whether a CM signal has been received. If a CM signal has been received, the process proceeds to step S108. After the transmission of the ANSam signal has been stopped, the process proceeds to step S108. Proceed to.
[0078]
In step S106, it is determined whether or not the timer has timed out. If the timer has timed out, in step S116, after the transmission of the ANSam signal has been stopped, the process proceeds to step S118. Proceed to S104.
[0079]
In step S108, it is determined whether or not data communication is specified by the CM signal. If data communication is specified, the process proceeds to step S109, where data communication is executed. If data communication is not specified (FAX communication is specified). Then, the process proceeds to step S110.
[0080]
In step S110, V.V. It is determined whether or not the H.34 half-duplex communication is designated. If the half-duplex communication has been designated, the process proceeds to step S112, After 8 protocols, 34 half duplex communication. If 34 half-duplex communication is not specified, the process proceeds to step S114.
[0081]
In step S114, V. After 8 protocols, 21 procedures, V.I. 27ter or V.I. 29, or V.I. 17 communication is performed, and in step S118, the V.17 communication is performed. Then, the CSI / DIS signal is transmitted using the V.21 signal. 21 procedures, V.I. 27ter or V.I. 29, or V.I. 17-image communication is executed.
[0082]
Next, the transmission control procedure will be described.
[0083]
First, when the ANSam signal is received from the called terminal, V.sub. The procedure of Step 34 and the transmission control procedure up to the execution of image transmission will be described.
[0084]
FIG. 9 shows a V.V. system applied to the facsimile apparatus FS1. It is a figure which shows an example of the transmission control procedure in 34 communication.
[0085]
In FIG. 9, a signal enabling full-duplex communication (an ANSam signal, which is 2100 Hz modulated at 15 Hz) is transmitted from the called terminal. From the calling side, 8, a CM signal is transmitted by the modulation based on No. 8, and the called terminal is notified of a transmission mode executable when image transmission is performed by the CM signal.
[0086]
The called terminal that has received the CM signal notifies the calling terminal of a receivable transmission mode (V.34) among the transmission modes specified by the CM signal, and the JM signal is used for this notification.
[0087]
The calling terminal that has received the JM signal notifies the called terminal of the transmission mode by transmitting the CJ signal.
[0088]
After 50 msec elapses after the CJ signal is transmitted (after the completion of the V.8 procedure), the calling terminal returns to the V.8 signal. In step 34, a line probing signal (a signal with INFO0c added at the beginning) for checking the status of the telephone line 2a is transmitted. The called terminal sends out a signal (a signal preceded by INFO0a) in response to the line probing signal from the calling terminal, and uses this signal to send out the subsequent sending level, amplitude level correction, and transmission baud rate. Notify the terminal.
[0089]
The calling terminal sends a long training signal 50 msec after sending the line proofing signal, and the called terminal adjusts the equalizer of the modem, detects the timing, etc. based on the long training signal. Is carried out.
[0090]
The calling terminal sends out a parameter exchange signal after 50 msec has elapsed since sending out the long training signal. The called terminal sends out a signal in response to the parameter exchange signal, and notifies the calling terminal of the subsequent link correction and bit rate using this signal.
[0091]
After responding to the parameter exchange signal, the called terminal sends the CSI and DIS signals, sends a flag until receiving the TSI and DCS signals from the calling terminal, and after receiving the TSI and DCS signals, sends the CFR signal. Is sent. After receiving the CSI and DIS signals, the calling terminal sends out the TSI and DCS signals, and sends out the flag until receiving the CFR signal from the called terminal.
[0092]
After 50 msec elapses from the sending of the flag, the calling terminal returns to the V.110 terminal. The image transmission by the image signal is started and an image signal is transmitted. After a lapse of 50 msec from the end of the image signal transmission, V.V. 34, the calling terminal sends out the PPS-MPS signal, and sends out the flag until receiving the MCF signal from the called terminal. The called terminal sends an MCF signal after receiving the PPS-MPS signal.
[0093]
After a lapse of 50 msec from the transmission of the flag, the V.V. The image transmission is executed by the terminal 34, and the image signal is transmitted again from the calling terminal. After a lapse of 50 msec from the end of the image signal transmission, V.V. 34, the calling terminal sends out a PPS-EOP signal and sends out a flag until an MCF signal is received. The called terminal transmits an MCF signal after receiving the PPS-EOP signal. Thereafter, the same procedure as described above is repeated until the image transmission ends.
[0094]
Next, from the reception of the ANSam signal from the called terminal, the V.V. 8, after the procedure of V.8. 8 protocol. The communication of 17 or less will be described.
[0095]
FIG. 10 shows a V.V. service when a call is made to a service provider applied to the facsimile machine FS1. It is a figure which shows the example of the transmission control procedure in 17 or less communication.
[0096]
In FIG. 10, first, the called terminal transmits ANSam, and the calling terminal transmits the ANSam. 21, V.I. 27ter, V.I. 29 half duplex, V.I. 17) Transmit a communicable CM signal. At this time, after receiving the CM signal, the receiver sets the V.V. 21, V.I. 27ter, V.I. 29 half duplex, V.I. 17 Transmit a communicable JM signal. The calling terminal transmits a CJ signal based on the reception of the JM signal.
[0097]
The receiver has 21 NSF / CSI / DIS signal, and the transmitter 21 is transmitted, and the V.21 TSI / DCS signal is transmitted. 21 procedures, V.I. 27ter or V.I. 29, or V.I. Execute 17-image transmission.
[0098]
Next, without responding to the ANSam signal received from the called terminal, 8 without performing the procedure of 21 protocol. 17 and below will be described.
[0099]
FIG. 11 shows a V.V. service when a call is made to a service other than the service provider (general destination) applied to the facsimile machine FS1. It is a figure which shows the example of the transmission control procedure in 17 or less communication.
[0100]
In FIG. 11, first, the called terminal transmits ANSam, and the transmitter does not respond to this ANSam. Then, the receiver receives 21 NSF / CSI / DIS signal, and the transmitter 21 is transmitted, and the V.21 TSI / DCS signal is transmitted. 21 procedures, V.I. 27ter or V.I. 29, or V.I. Execute 17-image transmission.
[0101]
[Second embodiment]
The second embodiment of the present invention is the same as the first embodiment, except that the function of the modem according to the first embodiment is the same as that of the first embodiment. 34, V.I. 21, V.I. 17, or V.I. 29, or V.I. 27ter; 34 communication prohibiting means. 34 is an embodiment in which the communication control in the first embodiment is executed when the communication is prohibited.
[0102]
FIGS. 5 and 6 are flowcharts showing the operation of the second embodiment, and are flowcharts showing control operations of portions different from the flowcharts shown in FIGS.
[0103]
Step S60 represents Step S12. In Step S62, information of the operation unit is input. It is determined whether registration of communication prohibition is selected or not. If registration of prohibition of communication is not selected, the process proceeds to step S66 (S2), and If the registration of the communication prohibition is selected, the process proceeds to step S64, and the V.34 is stored in the memory 18. 34 prohibits / not prohibits communication.
[0104]
A step S68 represents YES in the step S26, and in a step S70, the information in the memory 18 is inputted, and 34. It is determined whether the prohibition of communication is registered. V. If communication prohibition has not been registered, step S74 is executed, and If the 34 communication prohibition is registered, step S72 (S32) is executed.
[0105]
In step S74, the V.V. 21, V.I. 27ter, V.I. 29 half duplex, V.I. 17, V.I. In step S76, a V.34 CM signal allowing half-duplex communication is transmitted. 8 is received, and in step S78, a CJ signal is transmitted.
[0106]
In step S80, the receiver sets V. It is determined whether or not it has a half-duplex reception function. If the V.34 half-duplex reception function is provided, the process proceeds to step S84. Performs a half-duplex protocol, image transmission, If it does not have the 34 half-duplex reception function, the process proceeds to step S82 (S38).
[0107]
Step S86 represents step S2.
[0108]
According to the above-described embodiment, when a call is made to a service provider that supports FAX communication and data communication, the V.100 call is made. When communication of 17 or less is executed, 8 can be shifted from the F.8 protocol, and the service provider can reliably execute the FAX communication and the data communication, while the V.8 communication between the facsimile terminals. 17 or less, the conventional V.17 communication is used. 8 without performing the procedure. 21 procedure, and therefore, Image transmission of 17 or less can be executed reliably.
[0109]
According to the above-described embodiment, the function of modulating / demodulating facsimile image transmission is the same as that of V.25. 21, V.I. 17, or V.I. 29, or V.I. 27ter, so that the image transmission of the facsimile apparatus can be performed by V.27ter. The control in a terminal having only 17 or less is clear.
[0110]
Further, according to the above embodiment, the modulation and demodulation function of facsimile image transmission includes 34, V.I. 21, V.I. 17, or V.I. 29, or V.I. 27ter, and V.I. 34 means for inhibiting communication. Thus, the image transmission of the facsimile apparatus can be performed by V. 17 or less, The control at the terminal having the 34 communication function is clear.
[0111]
Furthermore, according to the above embodiment, when a call is made to a specific telephone number, data communication is possible, so that the facsimile apparatus makes a call to the specific telephone number by calling a service provider. Yes, it is clear that data communication can be selected.
[0112]
According to the above embodiment, the terminal having the specific telephone number transmits the ANSam signal when receiving a call, so that the terminal having the specific telephone number can perform both data communication and facsimile communication when receiving a call. It is clear that the functions on the service provider side become clear, and the data communication and the FAX communication can be reliably performed together with the transmission facsimile terminal.
[0113]
【The invention's effect】
According to the present invention, when a call is made to a service provider that supports FAX communication and data communication, the V.100 call is made. When communication of 17 or less is executed, 8 can be shifted from the F.8 protocol, and the service provider can reliably execute the FAX communication and the data communication, while the V.8 communication between the facsimile terminals. 17 or less, the conventional V.17 communication is used. 8 without performing the procedure. 21 procedure, and therefore, This has the effect that image transmission of 17 or less can be reliably performed.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a facsimile machine FS1 according to a first embodiment of the present invention.
FIG. 2 is a flowchart showing an operation of the facsimile machine FS1.
FIG. 3 is a flowchart showing an operation of the facsimile machine FS1.
FIG. 4 is a flowchart illustrating an operation of the facsimile machine FS1.
FIG. 5 is a flowchart showing the operation of the second embodiment.
FIG. 6 is a flowchart showing the operation of the second embodiment.
FIG. 7 is a diagram showing incoming call control of a service provider in the embodiment.
FIG. 8 is a diagram showing incoming control of a service provider in the embodiment.
FIG. 9 shows a V.F. applied to the facsimile apparatus FS1. It is a figure which shows an example of the transmission control procedure in 34 communication.
FIG. 10 is a diagram illustrating a case where a call is made to a service provider applied to the facsimile machine FS1. It is a figure which shows the example of the transmission control procedure in 17 or less communication.
FIG. 11 is a diagram illustrating a case where a call is made to a non-service provider (general destination) applied to the facsimile apparatus FS1. It is a figure which shows the example of the transmission control procedure in 17 or less communication.
FIG. 12: ITU-T Recommendation V. 8 is a diagram illustrating a configuration of a preamble included in a procedure signal of FIG.
FIG. 13: ITU-T Recommendation V. 8 is a diagram showing a category octet form for determining an information category of a procedure signal of No. 8. FIG.
FIG. 14 is a diagram showing an example of using bits of a calling function octet.
FIG. 15: ITU-T Recommendation V. FIG. 14 is a diagram showing a modulation mode designated by a procedure signal of No. 8;
FIG. 16: ITU-T Recommendation V. 8 is a diagram illustrating a list of codes in a protocol category of a procedure signal of No. 8. FIG.
FIG. 17: ITU-T Recommendation V. 8 is a diagram illustrating a code indicating a cellular access connected to the GSTN of a procedure signal of No. 8. FIG.
FIG. 18 is a diagram showing a V.I.T. 34 is a diagram illustrating bit definitions of an INFO0 sequence of No. 34. FIG.
[Explanation of symbols]
FS1: facsimile machine,
4: Phone,
10 ... ANSam sending circuit,
14 ... Reading circuit,
16. Recording circuit,
18. Memory circuit,
20: control circuit.

Claims (9)

ITU-T recommendation V.1 8 in a facsimile communication system for setting an image transmission mode executable with the destination apparatus based on the procedure.
ANSam signal receiving means;
CM signal transmitting means;
Means for registering specific telephone number information;
Communication protocol changing means for changing a communication protocol when facsimile communication is selected between when a call is made to a specific telephone number and when a call is made to another telephone number;
Facsimile machine characterized by having: In claim 1,
When a call is made to a specific telephone number by FAX communication, 8 after performing procedure 8. 21 procedures, V.I. 17, or V.I. 29, or V.I. 27. A facsimile machine for executing high-speed communication. In claim 1 or claim 2,
When a call is made to a phone number other than the specific telephone number, 8 without performing the procedure. 21 procedures, V.I. 17, or V.I. 29, or V.I. 27. A facsimile machine for executing high-speed communication. In any one of claims 1 to 3,
The modulation / demodulation function of facsimile image transmission includes V. 21, V.I. 17, or V.I. 29, or V.I. A facsimile machine having 27 ter. In any one of claims 1 to 3,
The modulation / demodulation function of facsimile image transmission includes V. 34, V.I. 21, V.I. 17, or V.I. 29, or V.I. A facsimile machine having 27 ter. In claim 5,
V. 34. A facsimile apparatus having communication inhibiting means. In any one of claims 1 to 6,
A facsimile apparatus capable of performing data communication when making a call to the specific telephone number. In any one of claims 1 to 7,
A facsimile apparatus wherein the terminal having the specific telephone number transmits an ANSam signal when receiving a call. In any one of claims 1 to 8,
A facsimile apparatus wherein the terminal having the specific telephone number is capable of performing both data communication and facsimile communication when receiving a call.

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