JPH11136481A - Communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately control the transmission of ANSam signals and to perform efficient communication by changing the modulation degree of the ANSam signals based on line conditions and transmitting the ANSam signals in a communication equipment capable of ITU-T recommendation V.8 and V.34 communication. SOLUTION: An ANSam sending circuit 10 of this facsimile equipment sends the ANSam signals by the modulation degree specified by a signal line 20f to the signal line 10a when the signals of a signal level '1' are outputted to the signal line 20d and does not output the ANSam signals to the signal line 10a when the signals of the signal level '0' are outputted to the signal line 20d. A control circuit 20 changes the modulation degree of the ANSam signals based on the line conditions and transmits the ANSam signals. To put it concretely, control is performed so as to turn the modulation degree to 0.1 in the case that the call termination level of CNG signals is higher than -30dBm and to turn the modulation degree to 0.05 in the case that it is less than -35dBm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to ITU-T Recommendation V. 8, V.I. 34 relates to a communication device such as a facsimile device capable of communication.

[0002]

2. Description of the Related Art Conventionally, ITU-T Recommendation V. 8, V.I.
In the facsimile apparatus capable of performing the 34 communication, the ANSam signal was transmitted at the time of an incoming call. Here, the ANSam signal has a cosine waveform signal of 2100 Hz ± 1 Hz of 450 ± 1.
The phase is inverted at an interval of 25 msec, and further 15 ± 0.
The amplitude is modulated by a cosine waveform of 1 Hz.

The amplitude of the envelope of the modulated waveform is
The long-term average amplitude is 0.8 ± 0.01 to 1.2 ±
Must be in the range of 0.01. That is, the modulation degree is within 0.2, for example, the modulation degree is set to 0.1, and is always fixed.

[0004]

However, the calling facsimile machine needs to distinguish between the ANSam signal and the CED signal. However, depending on the line characteristics, ANS
am signal is mistaken for a CED signal. 21 D
The CI signal may be transmitted again in response to the IS signal. However, as described above, the modulation depth is fixed and ANSam
ANSam transmitted by the called terminal again to send a signal
The probability that a signal cannot be received increases, and 8, V.I. 34
There is a disadvantage that communication becomes impossible.

Further, with respect to the transmission of such an ANSam signal, there has been proposed a communication apparatus in which the transmission time of the ANSam signal is changed after a predetermined number of communications have been completed based on the reception of the signal from the partner device after the transmission of the ANSam signal. Have been.

However, such a device is applied to reception from all destinations, so that the transmission time of the ANSam signal is determined according to reception from the destination under the worst conditions. For this reason, when receiving from a destination with good conditions, the ANSam signal is transmitted for an unnecessarily long time, and there is a disadvantage that the communication time becomes long.

[0007] After the predetermined number of communications are completed, ANSa
Since the transmission time of the m signal is changed, the ANSam signal is transmitted at the same transmission time for a predetermined number of communications,
Meanwhile, V. 8, V.I. 34, there was a problem that the success probability of the communication could not be improved.

Accordingly, an object of the present invention is to provide a communication device capable of appropriately controlling the transmission of an ANSam signal and performing efficient communication.

[0009]

Means for Solving the Problems The first invention of the present application is:
ITU-T Recommendation V. 8, V.I. In a communication device capable of performing 34 communication, the ANSam signal is transmitted by changing the modulation degree of the ANSam signal based on the line condition.

The second invention of the present application is the first invention, wherein the lower the incoming level of the CNG signal, the more the A
The modulation degree of the NSam signal is reduced.

The third invention of the present application is based on ITU-T Recommendation V. 8, V.I. In a communication device capable of communication, when an incoming call is received, V.34 transmission of an ANSam signal is performed. 8 cannot receive the CM signal of V.8. After transmitting the DIS signal of V.21,
, The next ANS to be transmitted
It is characterized in that the signal is transmitted with the modulation degree of the am signal changed.

The fourth invention of the present application is based on ITU-T Recommendation V. 8, V.I. A communication device capable of performing communication includes a recognizing means for recognizing the terminal number information of the other party prior to the call connection, and a registration means for registering the modulation degree of the ANSam signal in accordance with the terminal number information of the other party ANS
am signal transmission. 8 cannot receive the CM signal of V.8. After transmitting the DIS signal of V.21, When receiving the CI signal of No. 8, the modulation degree of the ANSam signal to be transmitted next is changed and transmitted, and the modulation degree of the ANSam signal is registered in the registration means corresponding to the other party. And

The fifth invention of the present application is based on ITU-T Recommendation V. (8) In a communication device capable of communication, a recognizing means for recognizing terminal number information of a partner side prior to a call connection, and registering whether to transmit an ANSam signal or a CED signal in accordance with the terminal information of the partner side When the ANSam signal is transmitted, a registration unit for registering the transmission time is provided.

According to a sixth aspect of the present invention, in the fifth aspect, when the ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection and a CM signal is received from the other party, the other party is sent to the other party. Correspondingly, the fact that the transmission time of the ANSam signal is to be shortened is registered in the registration means, and the ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection, and the CM signal cannot be received from the other party. 21 signal is transmitted, and then, when a CI signal is received from the partner device,
It is registered in the registration means that the transmission time of the ANSam signal is lengthened and transmitted corresponding to the other party, and the ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection, and the CM signal cannot be received from the other party. , V. 21 signals,
After that, V.P. If the reception of the signal No. 21 is repeated a predetermined number of times, the CED
The transmission of the signal is registered in the registration means.

According to a seventh aspect of the present invention, in the sixth aspect, when a ANSam signal is transmitted a predetermined time after a call connection, a threshold for receiving a CM signal corresponding to the other party is provided. After the detection of the time
21 signal, the CI corresponding to the destination
After detecting the threshold time for receiving the signal,
The time obtained by adding a predetermined time to this threshold time is A
The transmission time of the NSam signal is registered in the registration unit, and thereafter, the transmission time of the ANSam signal is not changed based on the communication result.

According to an eighth aspect of the present invention, in the sixth or seventh aspect, the ANSam signal is transmitted two seconds after the call connection.

The ninth invention of the present application is based on ITU-T Recommendation V. In a communication device capable of 8 communication, a change unit for changing the transmission time of the ANSam signal is provided, and A
The transmission time of the NSam signal is changed.

According to a tenth aspect of the present invention, in the ninth aspect, the ANSam of the first predetermined time is set at the time of the incoming call.
Signal is transmitted, and there is no response from the partner device. 21
After transmitting the DIS signal of V. When eight CI signals are detected, the transmission time of the next ANSam signal is a second predetermined time longer than the first predetermined time.

[0019] The eleventh invention of the present application is directed to the tenth invention.
In the invention, the first predetermined time is 3 seconds, and the second predetermined time is 5 seconds.

The twelfth invention of the present application is based on ITU-T
Recommendation V. 8, V.I. In the communication method using the A.34 communication, the modulation degree of the ANSam signal is
The transmission of the NSam signal is performed.

Further, the thirteenth invention of the present application relates to the twelfth invention.
In the invention, the modulation degree of the ANSam signal is reduced as the incoming level of the CNG signal is lower.

The fourteenth invention of the present application is an ITU-T
Recommendation V. 8, V.I. In the communication method using the ANSam signal, the transmission method of the ANSam signal is applied to the V.34 communication. 8 cannot receive the CM signal of V.8. After transmitting the 21 DIS signal,
V. 8 is received, the next transmission A
It is characterized in that the NSam signal is transmitted with the modulation degree changed.

The fifteenth invention of the present application is an ITU-T
Recommendation V. 8, V.I. In the communication method using the C.34 communication, a recognition step of recognizing the terminal number information of the other party prior to the call connection, and a registration step of registering the modulation degree of the ANSam signal in the registration means in accordance with the terminal number information of the other party. When an incoming call is received, V.S. 8 cannot receive the CM signal of V.8. After transmitting the DIS signal of V.21,
, The next ANS to be transmitted
The modulation signal of the am signal is transmitted while being changed.
The modulation degree of the Sam signal is registered in the registration means corresponding to the destination.

The sixteenth invention of the present application is an ITU-T
Recommendation V. 8 In the communication method using communication, a recognition step of recognizing the terminal number information of the other party prior to the call connection, and registering whether to transmit the ANSam signal or the CED signal corresponding to the terminal information of the other party. , ANSam signal is transmitted, the transmission time is registered in the registration means.

[0025] The seventeenth invention of the present application is directed to the sixteenth invention.
In the invention of the above, if the ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection and a CM signal is received from the counterpart, the transmission time of the ANSam signal corresponding to the counterpart is shortened and transmitted. Since the ANSam signal is transmitted for a predetermined time after a predetermined time has passed after the call connection and the CM signal cannot be received from the other party, the V.V. 21 and then, if a CI signal is received from the other party, the registration means is registered in the registration means to extend the transmission time of the ANSam signal corresponding to the other party, and After a predetermined time, the ANSam signal is transmitted for the predetermined time and the CM signal cannot be received from the partner device. 21 signal, and then the V.21 signal is transmitted from the partner device. If the signal 21 is received a predetermined number of times in succession, the C
The transmission of the ED signal is registered in the registration unit.

Further, the eighteenth invention of the present application is a seventeenth embodiment of the present invention.
In the invention, when an ANSam signal is transmitted a predetermined time after a call connection, after detecting a time when a threshold for receiving a CM signal corresponding to the other party is detected, or
V. After transmitting a 21 signal, a time that is a threshold for receiving a CI signal corresponding to the other party is detected, and a time obtained by adding a predetermined time to the threshold time is set as a transmission time of the ANSam signal. The transmission time of the ANSam signal is not changed based on the communication result.

The nineteenth invention of the present application is directed to the seventeenth invention.
Alternatively, in the eighteenth aspect, the ANS 2 seconds after the call connection
An am signal is transmitted.

Further, the twentieth invention of the present application is an ITU-T
Recommendation V. In the communication method using eight communications, there is a changing step of changing the transmission time of the ANSam signal, and the transmission time of the ANSam signal is changed in one communication.

Further, the twenty-first invention of the present application relates to the twentieth invention.
In the invention of the above, when the call is received, the ANSa for the first predetermined time
m signal is transmitted, and there is no response from the partner device. 2
After transmitting the DIS signal of V.1. When eight CI signals are detected, the transmission time of the next ANSam signal is a second predetermined time longer than the first predetermined time.

[0030] The twenty-second invention of the present application is the same as the twenty-first invention.
In the invention, the first predetermined time is 3 seconds, and the second predetermined time is 5 seconds.

The twenty-third invention of the present application is an ITU-T
Recommendation V. 8, V.I. 34, in a computer-readable storage medium storing a program for performing communication, by changing the modulation degree of the ANSam signal based on the line condition,
A program for controlling transmission of a Sam signal is stored.

Also, the twenty-fourth invention of the present application is the twenty-third invention,
In the invention, a program for controlling the modulation degree of the ANSam signal to be smaller as the incoming level of the CNG signal is lower is stored.

The twenty-fifth invention of the present application is based on the ITU-T
Recommendation V. 8, V.I. In a computer-readable storage medium storing a program for performing communication, when an incoming call arrives, V.34 transmission of an ANSam signal is performed. 8 cannot receive the CM signal of V.8. After transmitting the DIS signal of V.21,
, The next ANS to be transmitted
It is characterized in that a program for controlling transmission by changing the degree of modulation of the am signal is stored.

The twenty-sixth invention of the present application is an ITU-T
Recommendation V. 8, V.I. 34, in a computer readable storage medium storing a program for performing communication, a recognition step of recognizing terminal number information of the other party prior to call connection, and a modulation of the ANSam signal corresponding to the terminal number information of the other party. And a registration step of registering the ANSam signal in the registration means. 8 cannot receive the CM signal of V.8. After transmitting the DIS signal of V.21, 8
Is received, the next transmitted ANSa
The m signal is transmitted with the modulation degree changed, and its ANS
A program for controlling the registration of the degree of modulation of the am signal in the registration means corresponding to the other party is stored.

The twenty-seventh invention of the present application is an ITU-T
Recommendation V. (8) In a computer-readable storage medium storing a program for performing communication, a recognizing step of recognizing terminal number information of a partner before a call connection, and transmitting an ANSam signal corresponding to the terminal information of the partner. In the case where the ANSam signal is transmitted, a program having a registration step of registering the transmission time in the registration means is stored.

Further, the twenty-eighth invention of the present application relates to the twenty-seventh invention.
In the invention of the above, if the ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection and a CM signal is received from the counterpart, the transmission time of the ANSam signal corresponding to the counterpart is shortened and transmitted. Since the ANSam signal is transmitted for a predetermined time after a predetermined time has passed after the call connection and the CM signal cannot be received from the other party, the V.V. 21 and then, if a CI signal is received from the other party, the registration means is registered in the registration means to extend the transmission time of the ANSam signal corresponding to the other party, and After a predetermined time, the ANSam signal is transmitted for the predetermined time and the CM signal cannot be received from the partner device. 21 signal, and then the V.21 signal is transmitted from the partner device. If the signal 21 is received a predetermined number of times in succession, the C
A program for controlling transmission of an ED signal to the registration means is stored.

The twenty-ninth invention of the present application relates to the twenty-eighth invention.
In the invention, when an ANSam signal is transmitted a predetermined time after a call connection, after detecting a time when a threshold for receiving a CM signal corresponding to the other party is detected, or
V. After transmitting a 21 signal, a time that is a threshold for receiving a CI signal corresponding to the other party is detected, and a time obtained by adding a predetermined time to the threshold time is set as a transmission time of the ANSam signal. This is registered in the registration means, and thereafter, a program for controlling so as not to change the transmission time of the ANSam signal based on a communication result is stored.

The thirtieth invention of the present application relates to the twenty-eighth invention.
Alternatively, in the twenty-ninth aspect, the ANS 2 seconds after the call connection
A program for transmitting an am signal is stored.

The thirty-first invention of the present application is an ITU-T
Recommendation V. 8. In a computer-readable storage medium storing a program for performing communication, a change step of changing a transmission time of the ANSam signal is provided, and
A program for controlling the transmission time of the NSam signal to be changed is stored.

The thirty-second invention of the present application relates to the thirty-first aspect.
In the invention of the above, when the call is received, the ANSa for the first predetermined time
m signal is transmitted, and there is no response from the partner device. 2
After transmitting the DIS signal of V.1. When a CI signal No. 8 is detected, a program for controlling a transmission time of the next ANSam signal to be a second predetermined time longer than the first predetermined time is stored.

The thirty-third invention of the present application relates to the thirty-second invention.
In the invention, the first predetermined time is set to 3 seconds, and the second predetermined time is set to 5 seconds.

In the above-described first, second, twelfth, thirteenth, twenty-third, and twenty-fourth aspects of the present invention, an appropriate ANSam signal modulation degree is determined based on the line condition and transmitted to the other party. And the probability of successful reception of the ANSam signal of the other party can be increased. 8, V.I. 34 communication can be effectively used.

According to the third, fourteenth, and twenty-fifth aspects of the present application, when the other party cannot receive the ANSam signal at the time of the incoming call, the ANSam signal is transmitted at a different modulation factor.
8, V.I. 34 communication possibility can be increased.

According to the fourth, fifteenth, and twenty-sixth aspects of the present application, it is possible to transmit an ANSam signal having an appropriate modulation factor corresponding to each destination. 8, V.I. 34 communication probability can be improved.

In the fifth, sixteenth, and twenty-seventh aspects of the present invention, the ANSam signal is transmitted only for an appropriate time corresponding to each destination, and the ANSam signal is transmitted. 34 communication can be performed, and the shortest protocol time can be provided. Further, V.I. (8) When an incoming call is received from a partner device having no communication function, the CED signal can be transmitted immediately, so that the probability of a communication error can be reduced.

The sixth to eighth and seventeenth to first aspects of the present application
9. In the twenty-eighth to thirtieth inventions, the ANSam signal is transmitted, the CED signal is transmitted, and the ANSam signal is transmitted.
The transmission time of the m signal can be determined by an appropriate algorithm, and this control can be easily realized.

The ninth to eleventh and twentieth to second aspects of the present application
In the second, thirty-first to thirty-third inventions, the ANSam signal after CI detection can be transmitted for a long time in one communication. 34, the probability of communication greatly increases, and high-speed communication becomes possible.

[0048]

FIG. 1 is a block diagram showing the configuration of a facsimile apparatus according to one embodiment of the present invention.

The NCU (network control unit) 2 connects to the terminal of the line in order to use the telephone network for data communication and the like.
It controls connection of a telephone exchange network, switches to a data communication path, and holds a loop. The NCU 2 connects the telephone line 2a to the telephone 4 when the signal level (signal line 20a) from the control circuit 20 is “0”, and connects the telephone line 2a when the signal level is “1”. It is connected to the facsimile machine side.
In a normal state, the telephone line 2a is connected to the telephone 4 side.

The hybrid circuit 6 separates the transmission system signal and the reception system signal, sends the transmission signal from the addition circuit 12 to the telephone line 2a via the NCU 2, and transmits the signal from the other party via the NCU 2. The signal is received and sent to the modem 8 via the signal line 6a.

The modulator / demodulator 8 is based on ITU-T Recommendation V. 8,
V. 21, V.I. 27ter, V.I. 29, V.I. 17, V.I.
34, and performs modulation and demodulation based on
Each transmission mode is designated by the signal line 20c. The modulator / demodulator 8 receives a signal output on a signal line 20b, outputs modulated data on a signal line 8a, receives a received signal output on a signal line 6a, and outputs demodulated data on a signal line 8b. Output.

The ANSam transmitting circuit 10 is a circuit for transmitting an ANSam signal. When a signal of the signal level "1" is output to the signal line 20d, the ANSam signal is output to the signal line 10a at a modulation degree designated by the signal line 20f. When the ANSam signal is transmitted and the signal of the signal level “0” is output to the signal line 20d, the ANSam signal is not output to the signal line 10a.

The addition circuit 12 inputs the information of the signal line 8a and the information of the signal line 10a, and adds the result of the addition to the signal line 12a.
a. The reading circuit 14 reads an image of a document and outputs the read image data to a signal line 14a. The recording circuit 16 is for sequentially recording information output to the signal line 20e line by line.

The memory circuit 18 is used to store raw information of read data or encoded information, and also stores received information or decoded information.

The incoming level detection circuit 22 is a circuit for detecting the incoming level, inputs information on the signal line 6a, and outputs the incoming level of the detected signal to the signal line 22a, for example, at -38 dBm.

The ringing signal detection circuit 24 is a circuit for detecting a ringing signal, inputs information on the signal line 2b, and outputs a signal of signal level "1" to the signal line 24a when the ringing signal is detected. If the calling signal is not detected, the signal line 24a
To output a signal of signal level "0".

The telephone number detection circuit 26 is a circuit for detecting a telephone number arriving between call signals, and inputs information of the signal line 2b and inputs telephone number information between call signals to the signal line 26a.

The registration circuit 28 is a circuit for registering the degree of modulation of the ANSam signal corresponding to the other party (telephone number information between call signals), and is input / output via a signal line 28a.

The registration circuit 30 corresponds to the destination (the telephone number between the call signals), and a flag indicating whether or not the determination has been completed. 21 protocol execution counter, CM signal detection,
By detecting the CI signal, a flag is stored which indicates in which direction (longer or shorter) the control is currently being performed in order to control to lengthen or shorten the time of the ANSam signal, and furthermore, this control A counter that counts the number of times the direction has changed, and a circuit that can register the transmission time of ANSam, and inputs and outputs registration information via a signal line 30a. Note that the default is that the determination has not been completed (that is, 0), and V.V.
0 in the counter of 21 protocol execution, direction control is unknown,
0 is registered in the number-of-times counter in which the control direction has changed, and 3 seconds are registered in the transmission time of ANSam.

The control circuit 20 controls the ITU in this embodiment.
-T Recommendation V. 8, V.I. 34 controls the entire facsimile machine capable of communication. In particular, in the first embodiment of the present invention, control is performed to change the degree of modulation of the ANSam signal based on the line condition and transmit the ANSam signal. Specifically, when the incoming level of the CNG signal is equal to or higher than -30 dBm, the modulation is controlled to be 0.1, and when it is less than -35 dBm, the modulation is controlled to be 0.05.

FIGS. 2 to 4 are flowcharts showing the control flow of the control circuit 20 in the first embodiment of the present invention.

In FIG. 2, the operation starts at S0 and S2
Then, the signal of the signal level "0" is output to the signal line 20a to turn off the CML. In S4, the signal of the signal level "0" is output to the signal line 20d, and the ANSam signal is not transmitted.

In S6, it is determined whether or not an incoming call is selected. If an incoming call is selected, the process proceeds to S10, and if no incoming call is selected, the process proceeds to S8, and after other processes, the process proceeds to S4.

In S10, a signal of signal level "1" is output to the signal line 20a, and the CML is turned on. In S12, 60 seconds are set in the timer 0. In S14, the timer 1 is set to 4 seconds.

In S16, it is determined whether or not a CNG signal has been detected. If a CNG signal has been detected, the flow advances to S20 to input information on the signal line 22a, and the flow advances to S22. Also, CNG
The incoming signal level is stored, and if no CNG signal is detected, the process proceeds to S18.

In S18, it is determined whether or not the timer 1 has timed out. If the time has expired, the flow proceeds to S28, and if not, the flow proceeds to S16.

At S22 and S24, the incoming level of the CNG signal is determined.
It is set to transmit an ANSam signal whose Hz is modulated at 15 Hz, and the process proceeds to S32. In addition, -35 dBm or more, -3
If it is less than 0 dBm, the process proceeds to S28, where it is set to transmit an ANSam signal obtained by modulating 2100 Hz at 15 Hz with a modulation factor of 0.1 via the signal line 20f, and the process proceeds to S32. If it is less than -35 dBm, the process proceeds to S30, where it is set to transmit an ANSam signal obtained by modulating 2100 Hz at 15 Hz with a modulation factor of 0.05 via the signal line 20f, and then proceed to S32.

At S32, 4 seconds are set in the timer 1. In S34, a signal of the signal level "1" is output to the signal line 20d, and the ANSam signal is transmitted.

At S36, V.V. 8 to determine whether the CM signal has been detected. When the CM signal of No. 8 is detected, S40
To V. If the CM signal of No. 8 has not been detected, the process proceeds to S38. In S38, it is determined whether or not the timer 1 has timed out. If the time is over, the process proceeds to S48, and if not, the process proceeds to S34.

In S40, a signal of signal level "0" is output to the signal line 20d, and the ANSam signal is not transmitted.
In step S42, a JM signal is transmitted. In step S44, a CJ signal is received. The procedure of step 34 and the primary reception are sequentially performed, and the process proceeds to S2.

In S48, a signal of signal level "0" is output to the signal line 20d, and the ANSam signal is not transmitted. In S50, V.V. 8 indicating that a communication function is provided. 2
In step S52, the timer 4 is set to 3 seconds.

Then, in S54, V.V. 8 is detected, and whether V.8 is detected or not is determined. When the CI signal of V.8 is detected, the process proceeds to S32, and 8 if no CI signal is detected.
Proceed to 56.

In S56, V.V. 21. It is determined whether the DCS signal has been received. When the DCS signal of V.21 is received, the process proceeds to S58, and 21, V.21 procedure. 27ter,
V. 29, V.I. The reception of the 17-image signal is executed, and the process proceeds to S2. V. 21 if no DCS signal has been received.
Proceed to 60.

In S60, it is determined whether or not the timer 4 has timed out.
When the time is over, the process proceeds to S62. In S62, it is determined whether or not the timer 0 has timed out. If the time has elapsed, the process proceeds to S2, and if not, the process proceeds to S50.

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

In the second embodiment, ANSam
For the transmission of the signal, 8 CM signal cannot be received,
V. After transmitting the DIS signal of V.21, When the CI signal No. 8 is received, the ANSam signal to be transmitted next is transmitted while changing the modulation factor.

FIG. 5 is a flowchart showing a part of the control of the control circuit 20 in the second embodiment which is different from that of the first embodiment (FIGS. 2 to 4).

First, S70 represents S12. In S72, a 2-second wait is performed, and in S74, S2
Proceed to 8.

S76 represents YES in S54. In S78, it is determined whether or not the modulation degree of the currently transmitted ANSam signal is 0.1.
, The process proceeds to S80 (S30), and if the modulation is not 0.1, the process proceeds to S82.

At S82, it is determined whether or not the modulation degree of the ANSam signal just transmitted is 0.05.
If it is 05, the process proceeds to S84 (S26), where the modulation factor is 0.0
If it is not 5, the process proceeds to S8 (S28).

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

In the third embodiment, when an incoming call is received, the control of the second embodiment is executed, and a suitable ANS
The modulation degree of the am signal is found, and the modulation degree is registered in the registration circuit 28.

FIG. 6 is a flowchart showing a part of the control of the control circuit 20 in the third embodiment which is different from that of the second embodiment (FIGS. 2 to 5).

First, S90 represents S0. Then, in S92, all the registration circuits 28 are cleared via the signal line 28a. Then, the process proceeds to S2 in S94.

S96 represents YES in S6. Then, in S98, the information of the signal line 26a is input,
It is determined whether or not the telephone number between the call signals is registered in the registration circuit 28. If the telephone number is registered, the process proceeds to S104, and if not, the process proceeds to S100.

At S100, information on signal line 26a is input, and the telephone numbers between the call signals are stored. And S102
Then, the process proceeds to S10.

In S104, the modulation degree corresponding to the other party registered in the registration circuit 28 via the signal line 28a is designated via the signal line 20f, and the ANSam signal is set to be transmitted. Then, the process proceeds to S32 in S106.

S108 represents YES in S36. Then, in S110, corresponding to the telephone number between the call signals via the signal line 28a, the last transmitted ANSa
The modulation degree of the m signal is stored in the registration circuit 28. And S1
In S12, the process proceeds to S40.

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

In the fourth embodiment, the registration circuit 30 registers whether to transmit an ANSam signal or a CED signal in accordance with the other party terminal information.
When transmitting the m signal, the transmission time is registered.

Then, two seconds after the call connection, an ANSam signal is transmitted for a predetermined period of time, and when a CM signal is received from the other party, the fact that the transmission time of the ANSam signal is shortened corresponding to the other party is registered. Also, two seconds after the call connection, ANSa
Since the m signal is transmitted for a while and the CM signal cannot be received,
V. When the CI signal is received from the partner device after transmitting the 21 signal, it is registered that the transmission time of the ANSam signal is to be extended corresponding to the partner. Further, two seconds after the call connection, A
Since the NSam signal is transmitted for a predetermined time and the CM signal cannot be received, After transmitting the V.21 signal, the other party sends the V.21 signal. When the reception of the signal 21 is repeated a predetermined number of times, the registration of the transmission of the CED signal is registered.

Also, when transmitting the ANSam signal two seconds after the call is connected, after detecting the time when the threshold for receiving the CM signal corresponding to the other party is detected, or when the V.30 signal is transmitted.
After transmitting the C.21 signal and detecting the threshold time for receiving the CI signal, a predetermined time (for example,
(0.5 seconds) The added time is registered as the time for transmitting the ANSam signal. After that, the transmission time of the ANSam signal is not changed regardless of the communication result.

FIGS. 7 to 15 are flowcharts showing the control flow of the control circuit 20 in the fourth embodiment.

First, the operation starts in S200, and in S202
, The determination end flag is set to 0 for all the destinations of the registration circuit 30 via the signal line 30a. 21 is set to 0, the direction control is set to unknown, the control direction change counter is set to 0, and the ANSam time is set to 3 seconds.

In S204, a signal of signal level "0" is output to signal line 20a to turn off CML. In S206, a signal of signal level “0” is output to the signal line 20d,
Do not transmit ANSam signal.

In step S208, information on the signal line 24a is input, and it is determined whether or not a call signal has been detected. If a call signal has been detected, the flow proceeds to step S212. After the processing, the process proceeds to S204.

At S212, the information on the signal line 26a is input, and it is determined whether or not the telephone number between the call signals has been detected.
If detected, the process proceeds to S216, where the telephone number between the call signals is stored, and the process proceeds to S218. If not detected, S21
4 to the existing V.4. 8, V.I. 34, V.I. 21, V.I. 2
7ter, V.I. 29, V.I. 17 communication is performed, and S20
Proceed to 4.

At S218, it is determined whether or not the telephone number between the detected calling signals is registered in registration circuit 30.
If registered, the process proceeds to S222, and if not registered, the process proceeds to S220.

In S220, the destination is registered in the registration circuit 30 via the signal line 30a, and the flow advances to S282. here,
The information corresponding to the destination has been initialized in S202.

In S222, the information of the signal line 30a is input, and it is determined whether or not the destination has been determined. If the determination has been completed, the process proceeds to S224. If the determination has not been completed, the process proceeds to S282. .

In S224, the information of the signal line 30a is input, and the V.V. The 21 counter determines whether or not it is 3 or more. If it is 3 or more, the process proceeds to S226 and 3
If it is less, the process proceeds to S250.

At S226, a signal of signal level "1" is output to signal line 20a to turn on CML. In S228, a two-second wait is performed. In S230, a CED signal is transmitted for 3 seconds. In S232, 35 seconds are set in Timer1.

In step S234, V. At 21, DIS (without V.8) is transmitted. In S236, Timer4
To 3 seconds.

Then, in S238 and S240, Tim
Before V.er4 times out, V.E. It is determined whether or not DCS No. 21 has been received.
Go to V.2 When the DCS of No. 21 is received, the process proceeds to S244.

In S242, it is determined whether or not Timer1 has timed out.
The process proceeds to S234, and if the time is not over, the process proceeds to S234.

In S244, the remaining V.V. 21 steps, S24
6 and V.6. 27ter, V.I. 29, V.I. 17 communications, S2
In V.48, Steps after 21 are sequentially performed, and the process proceeds to S204.

In S250, a signal of signal level "1" is output to the signal line 20a to turn on the CML. S2
In 52, wait for 2 seconds, and in S254, set Timer6 to 6
Set 0 seconds.

In S256, the information of the signal line 30a is input, and the AN corresponding to the destination registered in the registration circuit 30 is input.
Set the Sam transmission time to Timer. In S258, the ANSam signal is transmitted.

Next, at S260, V.V. It is determined whether or not the CM signal No. 8 has been detected. If detected, the process proceeds to S264, and if not detected, the process proceeds to S262. In S262, Tim
It is determined whether or not er has timed out. If the time has elapsed, the process proceeds to S270, and if not, the process proceeds to S258.

In S264, the JM signal is transmitted, in S266, the CJ signal is received, and in S268, the VJ signal is transmitted. 34, and the transmission of the primary channel is sequentially performed.
Go to 04.

In S270, V.V. DIS at 21
(It is assumed that V.8 is present), and in S272, Ti
Set 3 seconds to mer4.

Next, in S274, S276, and S278,
Before Timer 4 times out, V.V. 8 or the CI signal of V.8. It is determined whether the DCS signal of V.21 has been detected. When the CI signal of V.8 is detected, the process proceeds to S256, and When the DCS signal of No. 21 is detected, the process proceeds to S244, and when the timer 4 times out, the process proceeds to S280. In S280, it is determined whether or not Timer1 has timed out. If timed out, the process proceeds to S204, and if not, the process proceeds to S270.

At S282, a signal of signal level "1" is output to signal line 20a, and CML is turned on. In S284, a two-second wait is performed. In S286, Timer0 is set to 60
Set the seconds.

In S288, the signal line 30a is input, and ANSam corresponding to the destination registered in the registration circuit 30 is sent.
Set the transmission time to Timer. In S290, A
The transmission of the NSam signal is performed. In S292, V. 8 C
It is determined whether or not the M signal has been detected.
The process proceeds to S296 if not detected.

At S294, the address corresponding to the destination registered in the registration circuit 30 via the signal line 30a is set. 21 is set to 0, and if the immediately preceding direction control flag is detected as CI, the value of the control direction change counter is incremented by one, the ANSam time is set to be 0.1 second shorter, and S302
Proceed to.

In S296, it is determined whether or not the timer has timed out.
The process proceeds to 290, and if the time is over, the process proceeds to S298.

In S298, V.V. In step S21, DIS (assuming that V.8 is present) is transmitted. In step S300, 3 seconds are set in Timer4, and the flow advances to step S306.

In S302, it is determined via the signal line 30a whether or not the destination control direction change counter is 4 or more. If it is 4 or more, the flow proceeds to S304, and if it is less than 4, the flow proceeds to S264.

In S304, the judgment completion flag is set to 1 corresponding to the destination registered in the registration circuit 30 via the signal line 30a, the ANSam time is extended by 0.5 second and reset, and the flow proceeds to S264. move on.

In S306, S308 and S310, Ti
Before mer4 times out, V.V. 8 CI signals,
Or V. It is determined whether the DCS signal of V.21 has been detected. When the CI signal of No. 8 is detected, the process proceeds to S314,
V. When the DCS signal of No. 21 is detected, the process proceeds to S320, and T
When the time of the time of imer4 is over, the process proceeds to S312.

In S312, it is determined whether or not Timer1 has timed out.
Then, if the time has not elapsed, the flow proceeds to S298.

At S314, the destination corresponding to the destination registered in the registration circuit 30 via the signal line 30a is set. 21 is set to 0, the direction control flag is set to CI detection, and if the immediately preceding direction control flag is CM detection, the value of the control direction change counter is incremented by one, and ANSam
Set the time longer by 0.1 second.

In S316, the information of the signal line 30a is input, and it is determined whether or not the control direction counter corresponding to this destination is 4 or more.
If it is less, the process proceeds to S256.

In step S318, the judgment completion flag is set to 1 corresponding to the destination registered in the registration circuit 30 via the signal line 30a, and the ANSam time is set longer by 0.5 seconds. Thereafter, the process proceeds to S256.

In S320, the address corresponding to the destination registered in the registration circuit 30 via the signal line 30a is set. The value of the 21 counter is incremented by one and set. S32
In step S2, the information of the signal line 30a is input, and the V.V. 21 counter determines whether it is 3 or more,
If it is 3 or more, the process proceeds to S324, and if it is less than 3, S24.
Proceed to 4.

In S324, 1 is set to the determination end flag corresponding to the destination registered in the registration circuit 30 via the signal line 30a. Thereafter, the process proceeds to S244.

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

In the fifth embodiment, ANS in one communication
Control for changing the transmission time of the am signal is performed. In particular,
At the time of an incoming call, an ANS for a first predetermined time A (for example, 3 seconds)
am signal is transmitted and there is no response from the partner device. After transmitting the DIS signal of V.21, If eight CI signals are detected, the transmission time of the next ANSam signal is set to a second predetermined time B (for example, 5 seconds) longer than the first predetermined time A.

FIGS. 16 and 17 are flowcharts showing the control flow of the control circuit 20 in the fifth embodiment.

First, the operation starts in S400, and in S402
Then, the signal of the signal level "0" is output to the signal line 20a to turn off the CML. In S404, a signal of the signal level “0” is output to the signal line 20d, and the ANSam signal is not transmitted.

In S406, it is determined whether or not a call signal is detected. If a call signal is detected, the flow proceeds to S410. If no call signal is detected, the flow proceeds to S408. After other processing, the flow proceeds to S402.

In S410, a wait for 2 seconds is performed,
At 412, the timer 0 is set to 60 seconds. In S414, the timer 1 is set to 3 seconds. In S416, the signal of the signal level “1” is output to the signal line 20d, and ANSa
Transmit the m signal.

In S418, V.V. 8 to determine whether the CM signal has been detected. 8 CM signal is detected and S4
Go to V.20. 8 if no CM signal is detected
Proceed to 28.

In S420, a signal of signal level "0" is output to the signal line 20d, and the ANSam signal is not transmitted.
In S422, V.V. 8 transmission of the JM signal. 8 are sequentially received. In S426,
V. The transmission of the 34 control channels and the primary channel is performed. Thereafter, the process proceeds to S402.

In S428, it is determined whether or not the timer has timed out.
The process proceeds to S429, and when the time is over, the process proceeds to S429.

In S429, a signal of signal level "0" is output to the signal line 20d, and the ANSam signal is not transmitted.
In S430, V.V. 21 is transmitted. Here, V.V. 8 Notify the other party that the receiving function is available. In S432, the timer 4 is set to 3 seconds.

Next, in S434, S436 and S438, before the timer 4 times out, the V.V. 8 CI
Signal, or V. It is determined whether the DCS signal of V.21 has been detected. When the CI signal of No. 8 is detected, the process proceeds to S448, sets 5 seconds to the timer, and proceeds to S416.

In addition, V.I. When the DCS signal of No. 21 is detected, the process proceeds to S440.
Proceed to 46.

At S440, the remaining V.V. 21 steps, S4
V.42. 27ter, V.I. 29, V.I. 17 communications, S
In 444, V.V. After step 21, the process proceeds to step S402.

In S446, it is determined whether or not the timer 0 has timed out. If the time has expired, the flow proceeds to S402, and if not, the flow proceeds to S430.

The operation of the control circuit 20 in each embodiment described above is executed by the CPU in the control circuit 20 based on a program stored in the ROM or RAM in the control circuit 20. Alternatively, for example, a floppy disk, hard disk, magneto-optical disk, C
A program stored in an external storage device such as a D-ROM or a memory card can be loaded into the control circuit 20 and executed by the CPU.

In the above embodiment, the ITU-T Recommendation V. 8, V.I. Although the facsimile communication conforming to the Recommendation No. 34 has been described, the present invention can be applied to various communication apparatuses based on a communication protocol having the same function as the recommendation.

In the above embodiment, the stand-alone type facsimile apparatus has been described as an example. However, the present invention is not limited to this. For example, a copy function, an electronic file function, and a data processing function are combined with a communication function. The present invention can be applied to data communication control in a comprehensive data processing system. Further, the communication device may be separated from the recording circuit and the reading circuit.

[0144]

As described above, according to the first, second, twelfth, thirteenth, twenty-third, and twenty-fourth inventions of the present application,
Since the appropriate modulation degree of the ANSam signal can be determined and transmitted to the other party based on the line condition, the probability of successful reception of the other party's ANSam signal can be increased. 8,
V. 34 communication can be effectively used.

Further, according to the third, fourteenth, and twenty-fifth aspects of the present application, when the other party cannot receive the ANSam signal at the time of an incoming call, the ANSam signal is transmitted with a different modulation factor,
V. 8, V.I. 34 communication possibility can be increased.

Further, according to the fourth, fifteenth, and twenty-sixth aspects of the present application, ANSam having an appropriate modulation factor corresponding to each destination.
Signal transmission, and the V.V. 8, V.I. 34
The success probability of communication can be improved.

Further, according to the fifth, sixteenth, and twenty-seventh aspects of the present application, ANSam is provided for an appropriate time corresponding to each destination.
The signal is transmitted to 34 communication can be performed, and the shortest protocol time can be provided. Further, V.I. 8 When receiving an incoming call from a partner machine without communication function,
Since the D signal can be transmitted, the probability of a communication error can be reduced.

The sixth to eighth and seventeenth to first aspects of the present application
9. According to the twenty-eighth to thirtieth aspects, whether the ANSam signal is transmitted, the CED signal is transmitted, or the AN
The transmission time of the Sam signal can be determined by an appropriate algorithm, and this control can be easily realized.

In addition, the ninth to eleventh and twentieth to second aspects of the present application
2. According to the thirty-first to thirty-third inventions, CI in one communication
Since the detected ANSam signal can be transmitted for a long time, 3
4) The probability of communication is greatly increased, and high-speed communication becomes possible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart showing a first embodiment of the present invention.

FIG. 3 is a flowchart showing the first embodiment.

FIG. 4 is a flowchart showing the first embodiment.

FIG. 5 is a flowchart showing a second embodiment of the present invention.

FIG. 6 is a flowchart showing a third embodiment of the present invention.

FIG. 7 is a flowchart showing a fourth embodiment of the present invention.

FIG. 8 is a flowchart showing the fourth embodiment.

FIG. 9 is a flowchart showing the fourth embodiment.

FIG. 10 is a flowchart showing the fourth embodiment.

FIG. 11 is a flowchart showing the fourth embodiment.

FIG. 12 is a flowchart showing the fourth embodiment.

FIG. 13 is a flowchart showing the fourth embodiment.

FIG. 14 is a flowchart showing the fourth embodiment.

FIG. 15 is a flowchart showing the fourth embodiment.

FIG. 16 is a flowchart showing a fifth embodiment of the present invention.

FIG. 17 is a flowchart showing the fifth embodiment.

[Description of Signs] 2 ... NCU, 4 ... telephone, 6 ... hybrid circuit, 8 ... modulator / demodulator, 10 ... ANSam sending circuit, 12 ... addition circuit, 14 ... reading circuit, 16 ... recording circuit, 18 ... memory circuit, 20 ... Control circuit, 22 ... Incoming level detection circuit, 24 ... Paging signal detection circuit, 26 ... Phone number detection circuit, 28, 30 ... Registration circuit.

Claims (33)

[Claims] 1. An ITU-T Recommendation V. 8, V.I. 34. A communication device capable of performing communication, wherein the ANSam signal is transmitted by changing the modulation degree of the ANSam signal based on the line condition. 2. The communication device according to claim 1, wherein the lower the incoming level of the CNG signal, the smaller the degree of modulation of the ANSam signal. 3. The method according to ITU-T Recommendation V.3. 8, V.I. In a communication device capable of communication, when an incoming call is received, V.S. 8 CMs
Signal cannot be received. After transmitting the 21 DIS signal,
V. 8 is received, the next transmission A
A communication device for transmitting an NSam signal by changing the modulation factor. 4. ITU-T Recommendation V. 8, V.I. 34. A communication device capable of communication, comprising: recognition means for recognizing the terminal number information of the other party prior to call connection; and registration means for registering the degree of modulation of the ANSam signal corresponding to the terminal number information of the other party. When an incoming call arrives, V.S. 8 CMs
Signal cannot be received. After transmitting the 21 DIS signal,
V. 8 is received, the next transmission A
A communication apparatus, wherein the modulation degree of an NSam signal is transmitted while being changed, and the modulation degree of the ANSam signal is registered in the registration means corresponding to the other party. 5. The method according to ITU-T Recommendation V.5. (8) In a communication device capable of communication, a recognizing means for recognizing terminal number information of a partner side prior to call connection, and registering whether to transmit an ANSam signal or a CED signal corresponding to the terminal information of the partner side And a registration unit for registering the transmission time when transmitting the ANSam signal. 6. The method according to claim 5, wherein when a ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection and a CM signal is received from a partner, the transmission time of the ANSam signal is shortened corresponding to the partner. Since the ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection, the CM signal cannot be received from the other party. 21 and then, when a CI signal is received from the other party, the fact that the transmission time of the ANSam signal is extended corresponding to the other party is registered in the registration means, and after the call connection, After a predetermined time, the ANSam signal is transmitted for the predetermined time and the CM signal cannot be received from the partner device. 21 signal, and then the V.21 signal is transmitted from the partner device. 21. A communication device, wherein when the reception of the signal 21 is repeated a predetermined number of times, the registration unit transmits a CED signal corresponding to the destination. 7. The communication system according to claim 6, wherein when the ANSam signal is transmitted a predetermined time after the call connection, a time when a threshold for receiving a CM signal corresponding to the other party is detected is detected. After transmitting a 21 signal, a time that is a threshold for receiving a CI signal corresponding to the other party is detected, and a time obtained by adding a predetermined time to the threshold time is set as a transmission time of the ANSam signal. To the registration means, and thereafter,
A communication device, wherein a transmission time of the ANSam signal is not changed based on a communication result. 8. The communication device according to claim 6, wherein the ANSam signal is transmitted two seconds after the call connection. 9. ITU-T Recommendation V. 8. A communication device capable of communication, comprising: changing means for changing a transmission time of an ANSam signal;
A communication device, wherein the transmission time of an ANSam signal is changed in one communication. 10. The method according to claim 9, wherein at the time of the incoming call, an ANSam signal is transmitted for a first predetermined time, and there is no response from the other party. After transmitting the DIS signal of V.21, 8 is detected, the next AN signal is detected.
The communication apparatus according to claim 1, wherein the transmission time of the Sam signal is a second predetermined time longer than the first predetermined time. 11. The communication device according to claim 10, wherein the first predetermined time is 3 seconds, and the second predetermined time is 5 seconds. 12. An ITU-T Recommendation V. 8, V.I. 34. A communication method according to claim 34, wherein the ANSam signal is transmitted by changing a modulation degree of the ANSam signal based on a line condition. 13. The communication method according to claim 12, wherein the lower the incoming level of the CNG signal, the smaller the degree of modulation of the ANSam signal. 14. An ITU-T Recommendation V. 8, V.I. In the communication method using the ANSam signal, the transmission of the ANSam signal is performed at the time of an incoming call. 8 CMs
Signal cannot be received. After transmitting the 21 DIS signal,
V. 8 is received, the next transmission A
A communication method, wherein the transmission is performed while changing the modulation degree of the NSam signal. 15. ITU-T Recommendation V. 8, V.I. 34. A communication method according to claim 34, comprising: a recognition step of recognizing the terminal number information of the other party prior to the call connection; and a registration step of registering the degree of modulation of the ANSam signal in the registration means in accordance with the terminal number information of the other party. When an incoming call arrives, V.S. 8 CMs
Signal cannot be received. After transmitting the 21 DIS signal,
V. 8 is received, the next transmission A
A communication method, wherein the modulation degree of the NSam signal is transmitted while being changed, and the modulation degree of the ANSam signal is registered in the registration means in correspondence with the other party. 16. ITU-T Recommendation V. (8) A communication method by communication, comprising: a recognition step of recognizing terminal number information of a partner side before a call connection; and registering whether to transmit an ANSam signal or a CED signal in accordance with the terminal information of the partner side. And a registration step of registering the transmission time of the ANSam signal in the registration means when transmitting the ANSam signal. 17. The method according to claim 16, wherein, when a ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection and a CM signal is received from a partner, the transmission time of the ANSam signal is shortened corresponding to the partner. Since the ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection, the CM signal cannot be received from the other party. 21 and then, when a CI signal is received from the other party, the fact that the transmission time of the ANSam signal is extended corresponding to the other party is registered in the registration means, and after the call connection, After a predetermined time, the ANSam signal is transmitted for the predetermined time and the CM signal cannot be received from the partner device. 21 signal, and then the V.21 signal is transmitted from the partner device. 21. A communication method, wherein when the reception of the signal 21 is repeated a predetermined number of times, a registration of a CED signal corresponding to the other party is registered in the registration unit. 18. The method according to claim 17, wherein when the ANSam signal is transmitted a predetermined time after the call connection, a time when a threshold for receiving a CM signal corresponding to the other party is detected is detected, or V.V. After transmitting a 21 signal, a time that is a threshold for receiving a CI signal corresponding to the other party is detected, and a time obtained by adding a predetermined time to the threshold time is set as a transmission time of the ANSam signal. To the registration means, and thereafter,
A communication method, wherein a transmission time of the ANSam signal is not changed based on a communication result. 19. The communication method according to claim 17, wherein an ANSam signal is transmitted two seconds after the call connection. 20. ITU-T Recommendation V. 8. A communication method using eight communications, comprising: a changing step of changing a transmission time of an ANSam signal;
A communication method characterized by changing a transmission time of an ANSam signal in one communication. 21. An ANSam signal according to claim 20, wherein an ANSam signal is transmitted for a first predetermined time at the time of receiving the call, and no response is received from the other party. After transmitting the DIS signal of V.21, 8 is detected, the next AN signal is detected.
A communication method, wherein the transmission time of the Sam signal is a second predetermined time longer than the first predetermined time. 22. The communication method according to claim 21, wherein the first predetermined time is 3 seconds and the second predetermined time is 5 seconds. 23. ITU-T Recommendation V. 8, V.I. 34. A computer-readable storage medium storing a program for performing communication, wherein a program for controlling the transmission of the ANSam signal by changing the modulation degree of the ANSam signal based on the line condition is stored. Computer readable storage medium. 24. The computer-readable storage medium according to claim 23, wherein a program for controlling the modulation degree of the ANSam signal to be smaller as the incoming level of the CNG signal is lower is stored. 25. ITU-T Recommendation V. 8, V.I. 34, on a computer-readable storage medium storing a program for performing communication, when an incoming call is received, the transmission of the ANSam signal is performed according to V.34. 8 CMs
Signal cannot be received. After transmitting the 21 DIS signal,
V. 8 is received, the next transmission A
A computer-readable storage medium storing a program for controlling transmission by changing the modulation degree of an NSam signal. 26. ITU-T Recommendation V. 8, V.I. 34, in a computer-readable storage medium storing a program for performing communication, a recognition step of recognizing terminal number information of the other party prior to call connection, and a modulation of the ANSam signal corresponding to the terminal number information of the other party. And a registration step of registering the ANSam signal in the registration means. 8 CMs
Signal cannot be received. After transmitting the 21 DIS signal,
V. 8 is received, the next transmission A
A computer-readable storage for storing a program for controlling transmission of a modulation degree of an NSam signal while changing the modulation degree of the ANSam signal in the registration means corresponding to the other party. Medium. 27. An ITU-T Recommendation V.27. 8. In a computer-readable storage medium storing a program for performing communication, a recognition step of recognizing terminal number information of a partner before a call connection, and transmitting an ANSam signal corresponding to the terminal information of the partner. Registering whether to transmit the CED signal or transmitting the ANSam signal, and registering the transmission time in the registering means; and storing a program having: Medium. 28. The method according to claim 27, wherein, when a ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection and a CM signal is received from a partner, the transmission time of the ANSam signal is shortened corresponding to the partner. Since the ANSam signal is transmitted for a predetermined time after a predetermined time after the call connection, the CM signal cannot be received from the other party. 21 and then, when a CI signal is received from the other party, the fact that the transmission time of the ANSam signal is extended corresponding to the other party is registered in the registration means, and after the call connection, After a predetermined time, the ANSam signal is transmitted for the predetermined time and the CM signal cannot be received from the partner device. 21 signal, and then the V.21 signal is transmitted from the partner device. 21. A computer storing a program for controlling the registration means to register in the registration means that a CED signal is transmitted corresponding to the other party when reception of the signal 21 is repeated a predetermined number of times. A readable storage medium. 29. The method according to claim 28, wherein when the ANSam signal is transmitted a predetermined time after the call connection, a time when a threshold for receiving a CM signal is detected corresponding to the other party is detected, or V.V. After transmitting a 21 signal, a time that is a threshold for receiving a CI signal corresponding to the other party is detected, and a time obtained by adding a predetermined time to the threshold time is set as a transmission time of the ANSam signal. To the registration means, and thereafter,
A computer-readable storage medium storing a program for controlling a transmission time of the ANSam signal so as not to change based on a communication result. 30. The computer-readable storage medium according to claim 28, wherein a program for transmitting an ANSam signal two seconds after connection of the call is stored. 31. ITU-T Recommendation V. 8. In a computer-readable storage medium storing a program for performing communication, the method further comprising: a changing step of changing a transmission time of the ANSam signal.
A computer-readable storage medium storing a program for controlling a transmission time of an ANSam signal in one communication. 32. The method according to claim 31, wherein upon receiving a call, an ANSam signal is transmitted for a first predetermined time, and there is no response from the other party. After transmitting the DIS signal of V.21, 8 is detected, the next AN signal is detected.
A computer-readable storage medium storing a program for controlling a transmission time of a Sam signal to a second predetermined time longer than the first predetermined time. 33. The computer-readable storage medium according to claim 32, wherein a program in which the first predetermined time is 3 seconds and the second predetermined time is 5 seconds is stored.