JP2003125152A - Facsimile machine, facsimile communication method, and facsimile communication program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facsimile machine that can discriminate a model of an opposite machine so as to optimally control a transmission interval of facsimile packets. SOLUTION: A T. 38 Internet FAX 900 receives a prescribed signal sent from an opposite communication device via an IP network and discriminates whether the opposite communication device is a T. 38 Internet FAX 102 or a T. 30 public network FAX 102 (gateway 104). The T. 38 Internet FAX 900 optimally controls the transmission interval of facsimile packets on the basis of the discrimination result. For example, the T. 38 Internet FAX 900 selectively use an Internet facsimile mode where the transmission interval is relatively short or a public facsimile mode where the transmission interval is relatively long to optimally control the transmission interval of facsimile packets. Especially the communication time can be reduced in the case of the Internet facsimile mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for performing facsimile communication via the Internet, and more particularly to a technique for connecting an Internet facsimile terminal and a public network facsimile terminal.

[0002]

2. Description of the Related Art Conventionally, ITU-T Recommendation T. There is a communication method for connecting two G3 facsimiles conforming to 30 standard via the Internet. This communication method is a type of public-private connection, in which the dedicated line is replaced by the Internet. Therefore, an Internet Fax gateway that converts signals from both the public network and the Internet is required. Where G3
A facsimile terminal for a public network such as a facsimile is I
TU-T recommendation T.T. Since it conforms to 30, here
T. 30 Public network FAX

In FIG. 18 (a), T. 30 public network FAX
1 shows an example of a network configuration including an Internet facsimile gateway device (hereinafter referred to as a gateway device). Gateway device 18 on the transmission side
03 is the transmitting side T.03. 30) The modem signal received from the FAX 1801 of the public network is converted into packet data and transmitted to the IP network. The receiving-side gateway device 1804 that receives this packet data sets the T. 30 public network FA
The packet data is converted into a modem signal and transmitted to the public line (PSTN) for transmission to X1802.

T. Although the timing of transmitting / receiving a modem signal is strictly defined in No. 30, the transmitting side gateway device 1803 and the receiving side gateway device 1804 are
Does not require control over transmission timing. Because the transmitting side T.S. 30 public network FAX 1801 and receiving side T.30.
30 public network FAX 1802 is a T.30. This is because the transmission / reception timing defined in 30 is controlled. Therefore, the transmission-side gateway device 1803 and the reception-side gateway device 1804 have only to perform signal conversion between packet data and modem signals.

Apart from this, there is an Internet facsimile machine which is used by directly connecting to the Internet. FIG. 18B shows an internet facsimile system including an internet facsimile device. In the system of FIG. 18B, the ITU
T Recommendation T. Internet facsimile machine (1805 and 1
806). This ITU-T
Recommendation T. 38, an Internet facsimile machine compliant with T.38 is used. 38 Internet FAX.

As described above, in the past, T. 30 public network FAX
And a system for performing internet facsimile communication between the two. There were two systems, one for performing internet facsimile communication between the 38 internet faxes.

[0007]

Recently, T.W.
There is a need to connect an Internet-only facsimile terminal such as the 38 Internet FAX and a public network facsimile terminal such as the G3 facsimile.
To achieve this, at least the gateway device described above would be required.

In particular, T. In 30, the transmission interval between transmitted signals is strictly defined, but as described above, the gateway device is not involved in controlling this transmission interval at all. Therefore, T. 38 Internet FAX There is a problem in that control signals and image data must be transmitted and received at the timing defined by 30.

On the contrary, the T.S. T.38 Internet FAX is used for communication between FAX machines. It is no longer necessary to take the timing consistency required for the 30 public network FAX. Nevertheless, T.W. According to the transmission procedure of T.30, the T. When the 38 Internet FAX is operated, there arises a problem that communication time is wasted.

Therefore, according to a first aspect of the present invention, communication with a public network facsimile terminal is performed via a facsimile gateway for mutually converting a facsimile packet conforming to the Internet facsimile standard and facsimile data conforming to the public network facsimile standard. It is an object of the present invention to provide an internet facsimile apparatus for performing the above. More specifically, it is an object of the present invention to provide an internet facsimile apparatus which controls transmission of facsimile packets so as to comply with the public network facsimile standard.

According to a second aspect of the present invention, when the partner device is also an internet facsimile device, the T. Three
It is an object of the present invention to provide an internet facsimile apparatus that shortens unnecessary transmission intervals defined in 0 and transmits facsimile packets. That is, it is an object of the present invention to provide an Internet facsimile apparatus capable of discriminating the type of a partner device and controlling the transmission interval of facsimile packets based on the type.

[0012]

According to a first aspect of the present invention, there is provided a facsimile gateway for mutually converting a facsimile packet conforming to the Internet facsimile standard and facsimile data conforming to the public network facsimile standard, through a facsimile gateway. An internet facsimile apparatus that communicates with a public network facsimile terminal, and determines a transmission timing of the facsimile packet based on a generation means for generating a facsimile packet and a type of the facsimile packet generated by the generation means. There is provided an internet facsimile apparatus comprising: a means and a transmitting means for transmitting the facsimile packet according to the transmission timing determined by the determining means.

By controlling the transmission timing of the facsimile packet based on the type of the facsimile packet in this way, Internet facsimile communication is possible even if the communication device on the other side is a public network facsimile terminal.

Here, the deciding means decides the transmission timing of the second facsimile packet according to the transmission interval information which is predetermined for the first facsimile packet and the second facsimile packet having a predetermined mutual relationship. You may decide.

Further, it further comprises storage means for storing transmission interval information between the first packet and the second packet, and the determining means reads the transmission interval information from the storage means and determines a transmission timing. You may decide.

For example, the first facsimile packet is ITU-T Recommendation T.264. CE specified in 30
The second facsimile packet corresponds to the ITU-T recommendation T.264. It is a facsimile packet corresponding to the preamble specified in 30.

Further, for example, the first facsimile packet is ITU-T recommendation T.264. 30 is a facsimile packet corresponding to the binary signal code DCS defined in No. 30, and the second facsimile packet is
ITU-T Recommendation T. It is a facsimile packet corresponding to the preamble specified in 30.

As described above, since the facsimile packet is transmitted based on the transmission interval information between the signals defined in the public network facsimile standard, Internet facsimile communication is possible even if the partner device is a public network facsimile terminal. Becomes

Further, in order to solve the above problems, the present invention is an IP facsimile machine for performing facsimile communication with a public network facsimile terminal conforming to the public network facsimile standard via a relay device connected to an IP network, Creating means for creating a first facsimile packet and a second facsimile packet based on the public network facsimile standard; a public network side first facsimile signal corresponding to the first facsimile packet; With respect to the second facsimile signal on the public network side corresponding to the second facsimile packet, transmission of the first facsimile packet and the second facsimile packet based on the transmission interval defined in the public network facsimile standard. Transmission control means for controlling the interval,
According to the transmission interval controlled by the transmission control means, the first
To provide an IP facsimile machine including a transmitting unit for transmitting the second facsimile packet and the second facsimile packet. In addition, you may further provide the time-measurement means for measuring the said transmission interval.

For example, the transmission interval is ITU-T Recommendation T.264. It is a transmission interval defined in 30. For example, the Internet facsimile standard is ITU-
Recommendation T. 38 or the ITU-T recommendation T.38. It is an upper or lower standard compatible with the No. 38 standard. For example, the public network facsimile standard is based on ITU-T Recommendation T.264. 30 or the ITU-T Recommendation T.30. It is an upper or lower standard compatible with 30.

According to a second aspect of the present invention, there is provided a facsimile device for performing facsimile communication in accordance with the Internet facsimile protocol, and a receiving means for receiving a predetermined signal transmitted from a partner communication device via the Internet, Transmission control means for determining the type of the other party's communication device based on the predetermined signal received by the receiving means, and controlling the transmission interval of the facsimile packet based on the determination result. To provide a facsimile machine.

That is, since it is possible to determine whether the partner communication device is an Internet facsimile machine or a public network facsimile terminal by the predetermined signal received by the receiving means, it is suitable for the type of partner partner communication device. Facsimile packets can be transmitted at the transmission interval.

Further, the transmission control means may be provided with an Internet facsimile mode in which the transmission interval is relatively short and a public facsimile mode in which the transmission interval is relatively long.

By providing two modes in this way,
In particular, in the Internet facsimile mode, the transmission interval can be shortened, and as a result, the facsimile communication time will be shortened. Further, since it also has a public facsimile mode, Internet facsimile communication can be realized even if the other party communication device is a public network facsimile terminal.

A deciding means for deciding whether to communicate with the other party's communication device in the Internet facsimile mode or in the public facsimile mode based on the predetermined signal received by the receiving means. Further, the transmission control means may control the transmission interval of the facsimile packet based on the determination by the determination means.

Further, the deciding means has a time measuring means for starting time counting when the receiving means receives the first signal as the predetermined signal, and a value measured by the time measuring means is a predetermined threshold value. Before the threshold value is exceeded, the receiving means determines whether or not the second signal is received as the predetermined signal, and as a result of the determination by the determining means, the value measured by the time measuring means is a predetermined threshold. If it is determined that the second signal has been received by the receiving unit before the value exceeds the value, control is performed to perform communication with the communication device on the other side in the Internet facsimile mode,
And a control means for controlling the communication with the partner communication device to be performed in a public facsimile mode when the value measured by the time measuring means by the receiving means is equal to or more than a predetermined threshold value. May be configured.

For example, when the partner communication device is compatible with the public facsimile mode, the first signal and the second signal are transmitted at predetermined intervals according to the standard. It is stipulated as one.

Further, the determining means determines whether or not the connection establishment message received as the predetermined signal by the receiving means includes identification information indicating that the partner communication device is an internet facsimile. When the determination means determines that the connection establishment message includes identification information, the determination means controls the communication with the partner communication device to be performed in the Internet / facsimile mode. When it is determined that the connection establishment message does not include the identification information, the facsimile device may be configured to include a control unit that controls the communication with the partner communication device to be performed in the public facsimile mode. .

Further, in the present invention, the communication device on the other side is a facsimile-related device, and storage means for storing identification information indicating that the communication device on the other side is an Internet facsimile in the connection establishment message, A facsimile-related device comprising: a transmission unit that transmits the connection establishment message in which the identification information is stored by the storage unit to the facsimile apparatus.

For example, the connection establishment message is IT
UT Recommendation Q. S conforming to the standards compatible with 931
It may be an ETUP message. For example, the identification information may be stored in an inter-user data area included in the SETUP message.

As described above, if the identification information is stored in the inter-user data area, the type of the communication device on the partner side can be determined relatively easily while keeping the standard.

For example, the Internet facsimile mode is based on ITU-T recommendation T.264. 38 is a mode in which facsimile communication is performed with a communication device on the other side that complies with the standard compatible with T.38, and the public facsimile mode is I
TU-T recommendation T.T. In this mode, facsimile communication is performed with a communication device on the other side that complies with a standard compatible with the standard 30.

The invention of the present application is based on ITU-T Recommendation T.264. Three
8, which is an Internet facsimile machine conforming to the ITU-T Recommendation T.8. ITU-T Recommendation T based on the discrimination result of the discrimination means for discriminating whether the facsimile terminal conforms to the standard No. 38 or the facsimile gateway device for relaying the connection with the public network facsimile terminal. ． 38-compliant Internet facsimile protocol packet (IF
P packet) transmission interval control means for controlling the transmission interval, and packet transmission means for transmitting the IFP packet at the transmission interval controlled by the transmission interval control means,
There is provided an Internet facsimile machine characterized by comprising:

Here, the discriminating means is the information about the destination specified at the start of the facsimile transmission, the elapsed time from the start of the facsimile communication until the reception of a predetermined IFP packet, or the transmission from the communication device on the partner side. The other party may determine the type of the communication device based on the received identification information.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below. Of course, the following embodiments disclose an example of the present invention in order for those skilled in the art to easily carry out the present invention, and only the technical scope of the present invention defined by the claims. It is only some embodiments. Therefore, even embodiments that are not directly described in the present specification are within the technical scope of the present invention as long as the technical idea is the same.

Although a plurality of embodiments will be described for the sake of convenience, those skilled in the art will understand that not only these embodiments are individually realized, but also the invention can be realized by appropriately combining a plurality of embodiments. Easy to understand.

Further, the following embodiments will be described using specific standardization standards and numerical values, but the present invention is not limited to these.

[0038]

[First Embodiment] This embodiment is intended to provide Internet facsimile communication between an Internet facsimile apparatus conforming to the Internet facsimile standard and a public network facsimile terminal conforming to the public network facsimile standard. More specifically, by controlling the transmission interval of the IFP (Internet Facsimile Protocol) packet so that the Internet facsimile machine side conforms to the public network facsimile standard, the public network facsimile terminal can correctly receive the facsimile data. To do so.

FIG. 1 shows an Internet facsimile system according to this embodiment. T. 38
The Internet FAX 100 is, for example, ITU-T recommendation T.264. 38 is an Internet facsimile machine. The IP network 101 is a network that conforms to the Internet protocol, and is, for example, the Internet or an intranet. T. 30 public network FAX102 is ITU-T recommendation T.264. It is a facsimile terminal conforming to 30. This T. 30 public network FAX1
02 is connected to the Internet / facsimile gateway device 104 via the public network (PSTN) 103. The gateway device 104 is a device for mutually converting data from the public network and data from the IP network. Here, T. 38 Internet FAX 100
, Which may be a dedicated terminal, can connect to an IP network, Equipped with facsimile application software compatible with the T.38 standard, it is substantially the same as T.38. Three
8 If it functions as an Internet FAX,
It may be a personal digital assistant (PDA) 105 or a personal computer (PC) 107. By the way, PDA
A wired modem or a wireless modem for connecting to an access point to the IP network is built in 105 or externally connected. In addition, similarly to the PC 107, the IP
A wired modem 108 and a wireless modem for connecting to a network are built-in or externally connected. Further, a printer 109 as a recording unit and a scanner 110 for reading a document of a facsimile may be provided.

FIG. 2 shows a configuration example of the Internet facsimile machine according to this embodiment. 201 is CP
U, 202 is RAM, 203 is ROM, 204 is a timer, 205 is a reading unit, 206 is a packet processing unit, 2
Reference numeral 07 is a LAN interface.

FIG. 38 Internet FAX1
10 is a flowchart showing an operation when transmitting 00. T. 38. The Internet FAX 100 reads the original image by the reading unit 205 and sends it to the RAM before transmission.
It is stored in 102 as facsimile data.

When the CPU 201 detects a transmission start instruction, the ITU-T recommendation Q. The connection procedure is executed according to 931. First, in order to send a SETUP message to the other communication device, the CPU 201 creates a SETUP message and passes it to the packet processing unit 206. Packet processing unit 2
At 06, a packet relating to the SETUP message is generated and transmitted to the communication device on the partner side via the LAN / IF 207 (S302). The SETUP message includes a call connection request. Here, the partner communication device generally refers to the gateway device 104, but sometimes the T.20 connected to the gateway device 104. 30 It may refer to the one that includes the public network FAX.

The gateway device 104 that receives the SETUP message waits for a CONN message, which means that the other party has responded, to be transmitted (S3).
03). When a packet is received from the gateway device 104 via the LAN / IF 207, the packet processing unit 2
In 06, the packet is disassembled, and the CPU 201 analyzes the content of the message included in the packet. If the packet contains a CONN message,
The CPU 201 determines that the CONN message has been received, and proceeds to step S304. CPU201 is IFP
In order to send and receive packets, the gateway device 1
A logical channel is established with 04 (S304). This logical channel is a bidirectional channel for internet facsimile.

In step S306, the facsimile communication sequence according to this embodiment is executed. Details will be described with reference to FIG. In step S307, it is determined whether all the facsimile images have been transmitted, and if all the facsimile images have been transmitted, the facsimile transmission process ends.

FIG. 5 shows a transmission sequence of the internet facsimile according to this embodiment. On the right side of the figure, for example, the value indicated as 1 sec is the transmission interval of IFP packets controlled by the timer 204.

First, when the gateway device 104 receives the T. Three
0 Public network FAX 102 to called station identification signal (CED) 5
01 is received, it is converted into an IFP packet (T30IND: CED) 541 corresponding to CED, and T.01 is transmitted. 38
Send to Internet FAX 100. Further, at a predetermined timing, the gateway device 104 causes the T30I
ND: FLAGS IFP packet 542 is transmitted.

The gateway device 104 is a T.M. 30 public network FAX 102 to preamble 503 and DIS signal 5
04 is received, it is converted into an IFP packet (V21HDLC: DIS) 544 corresponding to DIS, and T.04 is transmitted. 38
Send to Internet FAX 100.

T. 38 Internet FAX 100
Receives V21HDLC: DIS, the CPU 20
1 creates T30IND: FLAGS, packetizes it by the packet processing unit 206 and transmits it, and activates the timer 204 (S571). Timer 204
It is set in advance by the CPU 201 so that the time is up 1 second after the timer is activated. For example, C
The PU 201 receives the V21HDLC: DIS, and then the IFP packet (T30IND: FLAGS).
And the IFP packet (V21HDLC: DCS) are controlled with a transmission interval of 1 second. Below, CP
The U201 controls the transmission interval based on the type of IFP packet to be transmitted. Note that here, 1 second means that the T.S. This is to comply with the regulation of 30. Upon receiving T30IND: FLAGS, the gateway device 104 sets the preamble 505 to T.264. 30 public network FAX102
Send to. When the timer 204 finishes measuring the set time, it notifies the CPU 201 of the fact, and the CPU
201 creates V21HDLC: DCS, converts it into an IFP packet by the packet processing unit 206, and then LAN / IF
The IFP packet 546 is transmitted via.

When the gateway device 104 receives the IFP packet 546, the gateway device 104 sends the DCS signal 506 and the TCF signal 507 to the T.P. 30 Public network FAX 102 is transmitted.

Thus, the T.S. 38 Internet FAX
The reason why 100 transmits DCS after the timer 204 measures a predetermined time is as follows.

T. 38 Internet FAX 100 immediately transmits IFP packet 545, and immediately thereafter IFP packet 5
46, the gateway device 104 immediately transmits the DCS signal 506 to T.46. 30 Send to public network FAX. The gateway device 104 is a T.I. DCS that is a binary data signal without waiting for the time specified by 30.
506 will be transmitted. As a result, the ITU-which specifies that the preamble should be transmitted for 1 second.
Recommendation T. 30 will not be compliant, and The 30 public network FAX 102 may not be able to correctly receive the facsimile signal. Therefore, T. 38
Internet FAX 100 has the above timer 2
Therefore, it is necessary to control the transmission interval using 04.

Now, T.W. The preamble 505, the DCS 506, and the TCF 507 received by the T. 30 public network FAX102, preamble 509
Then, the CFR 510 is transmitted to the gateway device 104. The gateway device 104 uses the IFP packet (T3
0IND: FLAGS) 548 and C
FR510 to IFP packet (V21HDLC: CF
R) 550 and converted to T. 38 Internet FAX
Send to 100.

After that, T. 38 Internet FAX1
00 transmits T30IND: Speed to the gateway device 104, and the gateway device 104 sends the training signal 511 to the T. 30 Public network FAX 102 is transmitted. T. 38 Internet FAX 100 transmits image data 552 to 554 to the gateway device 104,
The gateway device 104 transfers the image data 512 to the T. Three
0 Send to public network FAX 102.

T. 38 Internet FAX 100
When all the image data is transmitted, the IFP packet (T30
IND: FLAGS) 555 to the gateway device 104
And the gateway device 104 sends the preamble 5
15 to T.S. 30 Public network FAX 102 is transmitted. CPU
The 201 activates the timer 204 again and clocks 1 second (S572). When 1 second is counted by the timer 204, the CPU 201 creates V21HDLC: EOP, and the packet processing unit 206 causes the IFP packet 556.
Is generated and transmitted to the gateway device 104. The gateway device 104 converts the IFP packet 556 into an EOP signal and sets the EOP 516 to T.264. 30 public network FAX10
Send to 2.

T. Preamble 51 as specified in 30
5, T.5 receiving EOP 516. 30 public network FAX10
2 transmits the preamble 518 and the MCF 519 to the gateway device 104. Gateway device 104
Is an IFP packet (V21HDLC: MCF) 559
To send.

T. 38 Internet FAX 100
When receiving the IFP packet 559, the IFP packet (T30IND: FLAGS) 560 is transmitted to the gateway device 104, and the gateway device 104 transmits the preamble 520 to the T.264 packet. 30 Public network FAX 102 is transmitted. With the transmission of the IFP packet 560, the CPU 201
Starts the timer 204 again and clocks 1 second (S573). When 1 second is counted by the timer 204, the CPU 201 creates V21HDLC: DCN, creates the IFP packet 561 in the packet processing unit 206, and sends the IFP packet 561 to the gateway device 104. The gateway device 104 converts the IFP packet 561 into a DCN signal and transmits the DCN 521 to the T.264 packet. 30 Public network FAX 102 is transmitted.

FIG. 38 Internet FAX1
10 is a flowchart showing an operation when receiving 00. T. 38 Internet FAX 100 is SETU
When the P message is received (S401), the CONN message is transmitted and responded (S402). Next, as in the case of transmission, the T. 38 logical channels are established (S40).
3). In step S406, the Internet facsimile is received according to the sequence shown in FIG. If it is determined in step S407 that all the facsimile images have been received, the facsimile communication process ends.

FIG. 6 shows a reception sequence of the internet facsimile according to this embodiment. The value shown on the right side of the figure is the transmission interval of the IFP packet. It should be noted that the details of each signal can be understood by those skilled in the art by referring to the description of FIG. 5. Therefore, here, the IFP packet transmission interval will be mainly described.

In step S601, the T. 38 Internet FAX 100 CPU201 is T30I
The ND: CED is created, packetized by the packet processing unit 206 and transmitted, and the timer 204 is started. The timer 204 is set so that the time is up 5 seconds after the timer is activated. Timer 204
However, when it finishes measuring the set time, the CPU
201 is notified, and the CPU 201 sends T30IND: FL
An AGS is created, converted into an IFP packet by the packet processing unit 206, and an IFP packet (T30IND: FLAGS) is transmitted via the LAN / IF 207. Also, C
The PU 201 uses the IFP packet (T30IND: FLA
The timer 204 is started together with the (GS) transmission. The timer 204 is set by the CPU 201 so that the time is up 1 second after the timer is activated. When the timer 204 finishes measuring the set time, it notifies the CPU 201 of the fact, and the CPU 201 notifies the V21HD
LC: DIS is created and the packet processing unit 206 performs IFP.
Converted to packet and IFP via LAN / IF207
The packet (V21HDLC: DIS) is transmitted.

The reason for controlling the transmission interval in this way is as follows. Immediately after transmitting the IFP packet (T30IND: CED), the IFP packet (T30IND: FLAG
S) and (V21HDLC: DIS) are transmitted, the gateway device 104 is still transmitting the CED tone signal, and thus the two transmitted IFP packets are ignored by the gateway device 104, resulting in malfunction. Cause of. Therefore, it is necessary to control the transmission timing of the IFP packet as described above. By the way,
ITU-T Recommendation T. The transmission time of the CED tone signal defined by 30 is specified to be 2.6 seconds to 4 seconds.

Now, in step S602, the CPU
When the 201 receives V21HDLC: DCS, the 201 sets the timer for 2 seconds and starts the timer 204.
When the timer 204 finishes measuring the set time,
This is notified to the CPU 201, and the CPU 201 notifies the T3
0IND: FLAGS is created, and the packet processing unit 206
Is converted into an IFP packet and the IFP packet (T30IND: FLAGS) is transmitted via the LAN / IF 207. Further, the CPU 201 uses the IFP packet (T30
IND: FLAGS) is transmitted, and the timer 204 is activated by setting to measure 1 second. Timer 20
When 4 finishes measuring the set time, CP
U201 is notified, and CPU201 is V21HDLC:
The CFR is created, converted into an IFP packet by the packet processing unit 206, and the IFP packet (V21HDLC: CFR) is transmitted via the LAN / IF 207.

Assuming that the IFP packet (v21HDLC:
Immediately after receiving DCS, IFP packet (T30IN
If D: FLAGS) and (V21HDLC: CFR) are transmitted, the gateway device 104 still has
T. 30 Since the TCF signal is being received from the public network FAX 102, the two IFP packets are ignored,
Malfunction occurs. By the way, ITU-T Recommendation T. The length of the TCF signal defined by 30 is 1.5 seconds.

Now, in step S603, the CPU
Upon receiving V21HDLC: EOP, the 201 sets to count 1 second and starts the timer 204.
When the timer 204 finishes measuring the set time,
This is notified to the CPU 201, and the CPU 201 sends V2
1 HDLC is created, converted into an IFP packet by the packet processing unit 206, and the IFP packet (V21HDLC: MCF) is transmitted via the LAN / IF 207.

Next, a method of setting the timer 204 will be described. The CPU 201 analyzes the content of the IFP packet received from the gateway device 104 to determine the next required process. For example, if an IFP packet 544 relating to V21HDLC: DIS is received during execution of a facsimile transmission sequence, the next step is T30.
IND: It is determined that an IFP packet 545 relating to FLAGS should be created and transmitted. Then, the CPU 201
Sets the timer 204 so that the transmission interval between the IFP packet 545 and the IFP packet 546 is read from the storage means such as the ROM 203 and the read transmission interval is timed. ROM for information on the corresponding transmission intervals
A transmission interval management table may be provided in 203.
An example of the transmission management table is shown in FIGS. 7 and 8. In the transmission management table 700 shown in FIG. 7, the timer setting value corresponding to the IFP packet which is the current processing target is registered. Therefore, the time to be set in the timer 104 can be extracted based on the type of IFP packet to be processed. On the other hand, the management table 800 of FIG.
The transmission interval between FP packets is registered. Two IF
The P packet is an IF sent at the start of timer activation.
A P packet and an IFP packet transmitted when the timer times out. In this way, the CPU 201
Determines the transmission interval and the transmission timing using the transmission interval management table.

Of course, the transmission interval management table may not be used. For example, the internet facsimile software can be programmed in advance to transmit IFP packets based on a predetermined transmission interval. That is, the processing described with reference to FIGS. 5 and 6 may be programmed.

As described above, the internet facsimile apparatus according to the present embodiment controls the transmission timing of the facsimile packet based on the type of the facsimile packet so that the communication device on the other side is the public network facsimile terminal. Also, internet facsimile communication becomes possible.

Further, since the internet facsimile apparatus according to the present embodiment transmits a facsimile packet based on the transmission interval information between the signals defined in the public network facsimile standard, the partner apparatus is a public network facsimile terminal. Internet facsimile communication is possible even if there is

Second Embodiment This embodiment provides a further improved version of the Internet facsimile terminal of the first embodiment. More specifically, it is an object of the present invention to provide an Internet facsimile terminal that selects and communicates with a more suitable facsimile communication mode based on the type of communication partner. In particular, when the communication partner is an Internet facsimile terminal, the communication time can be shortened as compared with the case where the communication partner is a public network facsimile terminal.

FIG. 9 shows an Internet facsimile system according to the second embodiment. T. 38 Internet FAX 900, the communication device on the other side is T.38. Three
8 is the Internet FAX 901, communication is performed using the Internet facsimile mode (hereinafter referred to as the IP mode) of the present embodiment, and the communication device on the other side communicates with the T.8. In the case of the 30 public network FAX 102, the first embodiment
The public network / facsimile mode (public mode) is used for communication. In particular, in the IP mode, the waiting time associated with the control of the transmission interval, which is necessary in the first embodiment, can be shortened, so that the communication time can be shortened. Therefore, the IP mode may be expressed as a short mode or a high speed mode.

The second embodiment will be described in detail below, but the parts common to the description of the first embodiment will be omitted. Thus, the simplification of the description will facilitate the understanding of the present invention by those skilled in the art.

T. The configuration of the 38 Internet FAX 900 is as shown in FIG.

FIG. 10 shows a transmission sequence of the second embodiment. The description of the steps already described with reference to FIG. 3 will be omitted. When the CONN signal is received in step S303, the process advances to step S1001 to set the time-up time of the timer 204 to 2.6 seconds and activate the timer to monitor the arrival of the IFP packet (T30IND: CED). Then, a logical channel is established (S30
4).

Here, the reason why the set value of the timer is set to 2.6 seconds will be described. FIG. 11 is an enlarged view of the part from S501 to S507 in the sequence of FIG. In FIG. 11, the Internet FAX 201
Received the connection confirmation, and then the IFP packet (T30IN
It takes at least 2.6 seconds to receive D: CED). The reason for this is ITU-T Recommendation T. This is because, in 30, the CED tone is defined to continuously transmit a tone signal of 2100 Hz ± 15 Hz for 2.6 seconds or more and 4 seconds or less. Therefore, it is necessary to wait at least 2.6 seconds before the tone signal received by the gateway device 104 is determined to be CED.

For comparison, FIG. 38 Internet FAX 900 is the sender, 38 shows a sequence when the 38 Internet FAX 901 is the receiving side. T. When transmitting the connection confirmation, the 38 Internet FAX 901 establishes the logical channel and immediately transmits the IFP packet (T30IND: CED). Therefore,
T. 38 Internet FAX 900 receives IFP packet (T30IND: CED) 541 after receiving connection confirmation
Will reach you soon. Moreover, the time is less than 2.6 seconds.

For the above reason, when the IFP packet 541 is received within 2.6 seconds after the connection is confirmed, the communication partner is T.60. If the IFP packet 541 is received after 2.6 seconds or more, the T.38 Internet FAX can be determined. It can be determined to be the 30 public network FAX102. Therefore, in step S1001, the timer value is set to 2.6 seconds.

Returning to the description of FIG. 10, step S100.
In 2, the CPU 201 determines whether or not the timer 204 has timed out. If the time has not expired, the process proceeds to step S1003 and the IFP packet (T3
0IND: CED) is received. Here, if it is determined that the IFP packet (T30IND: CED) is received, the process proceeds to step S1004, and the communication partner is set to T.264. 38 Set as Internet FAX. Further, in step S1005, the transmission interval of each IFP packet is set to 0. After that, the process proceeds to step S1006, and communication is performed according to the IP mode sequence shown in FIG.

When a time-up notification is received from the timer 204 in step S1002, the CPU 201 determines that the timer 204 has timed out, and the CPU 100 determines in step 100
7, the communication partner is set as the gateway device (or the T.30 public network FAX connected via the gateway device). Further, in step S1008, the transmission interval of the IFP packet is set according to the transmission interval management table 1400 shown in FIG. This transmission interval management table 14
00 is T.O. The transmission interval matched with 30 is registered. Next, in step S1009, inter-facsimile communication is performed according to the public mode sequence shown in FIG.

FIG. 38 Internet FAX
9 is a reception flowchart of 900. The same processes as those in FIG. 4 are denoted by the same reference numerals, and the description thereof will be omitted.

In step S1501, the CPU 201
The IFP packet (T30IND: CED), the IFP packet (T30IND: FLAGS), and the IFP packet (V21HDLC: DIS) are generated by the packet processing unit 206, and are continuously transmitted via the LAN / IF 207. In parallel with the transmission with this IFP packet,
Alternatively, upon completion of transmission, the CPU 201 causes the timer 2
The count-up time of 04 is set to 2.6 seconds to start (S1502). In step S1503, the time-out of the timer 204 is monitored, and step S15
In 04, the IFP packet (T30IND: FLAG
S) and the arrival of the IFP packet (V21HDLC: DCS), the communication device on the transmitting side detects that the T.S. 30 public network FAX or T.30. 38 Internet FAX is determined. Therefore, step S15
It can be said that the processing from 02 to step S1504 is the processing for causing the CPU 201 to function as the determination means of the partner communication device.

FIG. 16 shows a sequence obtained by enlarging a part of FIG. T. 38 Internet FAX sends IFP packet (T30IND: CED), then IF
It takes at least 2.6 seconds until the P packet (T30IND: FLAGS) and the IFP packet (V21HDLC: DCS) arrive. The reason for this is as already explained in the processing at the time of transmission (FIG. 11).
T. This is because in C.30, the minimum transmission time of the CED tone signal is determined to be 2.6 seconds to 4 seconds. In other words, the gateway 104 must comply with this standard,
The CED tone signal is transmitted over the T.C. signal for at least 2.6 seconds.
This is because it is necessary to keep sending the data to the 30 facsimile machine 102.

On the other hand, the call originator 38 Internet FAX 901, IFP packet (T
30IND: CED), IFP packet (T30IN
D: FLAGS), IFP packet (V21HDLC:
Immediately after receiving the DIS, the IFP packet (T30
IND: FLAGS) and IFP packet (V21HD
LC: DCS) is transmitted. That is, IFP packet (T30IND: CED), IFP packet (T30I
ND: FLAGS), IFP packet (V21HDL
If the IFP packet (T30IND: FLAGS) and the IFP packet (V21HDLC: DCS) are received within 2.6 seconds after continuous transmission of C: DIS), it can be determined that the communication partner is the Internet FAX. Therefore, in S1502, the timer 204 is set to count 2.6 seconds.

Returning to the description of FIG. 15, before the timer 204 times out, the IFP packet (T30IND: F
LAGS) and IFP packet (V21HDLC: DC
When the CPU 201 determines that the communication partner is received, the communication partner is set to T.S. 38 Internet FAX (S150
5), set the transmission interval of each IFP packet to 0 (S1
506), and communication is performed in the IP mode according to the sequence of FIG. 12 (S1507).

On the other hand, when the CPU 201 determines that the timer 204 has timed out, step S1508
And the communication partner is the gateway device 104 (T.30).
The public network FAX 102) is determined (S150).
8). Further, the CPU 201 refers to the transmission interval management table (FIG. 14) stored in the ROM 203,
The transmission interval of P packets is set (S1509).

Here, in step S1501, the T. Thirty
IFP packets (T3
0IND: FLAGS, IFP packet (V21HD
LC: DIS), the gateway device 104 is a T.L. Thirty
Since it arrives while the CED tone is being transmitted to the public network FAX, it may not be processed normally. Therefore, these IFP packets (T30IND: FLAG
S), the IFP packet (V21HDLC: DIS) is retransmitted. After that, communication is performed according to the sequence diagram 13.

As described above, according to the second embodiment, FLAGS and DCS are received as the predetermined signals before the value measured by the timer 204 as the time measuring means exceeds the predetermined threshold value. If it is determined that the predetermined signal is received before the value measured by the time measuring means exceeds a predetermined threshold value as a result of the determination by the CPU 201 as a determining means, the other party The communication with the communication device on the other side is controlled to be performed in the Internet / facsimile mode, and when the value measured by the time measuring device by the receiving device is equal to or more than a predetermined threshold value, the communication with the other communication device is performed. CPU 20 as control means for controlling to perform in public facsimile mode
By including 1, the communication can be performed in the communication mode suitable for the type of the other communication device. For example, if the communication device on the other side is In the case of the 38 Internet facsimile, the communication time can be shortened because the transmission interval is shortened.

Third Embodiment The second embodiment does not consider the traffic of the IP network. That is, the communication delay due to the congestion of the communication line is not considered. If the communication device on the other side is T.S. 38 Internet FAX
However, if a communication delay occurs, the above 2.
There is a possibility of responding for more than 6 seconds. In such a case, there is a possibility that the other party may be erroneously judged.

Therefore, the present embodiment aims to provide an internet facsimile apparatus which copes with a problem associated with communication delay.

Specifically, the T.S. 38. In the Internet FAX 900, when the destination information is input to specify the receiving side, the CPU 201 associates the destination IP address as the destination information and the partner attribute as shown in FIG. 17 based on the input destination information. By referring to the attached and registered destination information table 1700, it is possible to determine what the partner device is. Here, the destination information table 1700 is assumed to be stored in the RAM 202 in advance. The CPU 201 determines that the I
Select either P mode or public mode.

As described above, according to the present embodiment, even if there is a communication delay, the other party's communication device can be correctly identified, and communication can be performed in a more suitable FAX mode.

Fourth Embodiment This embodiment solves the same problem as the third embodiment. In this embodiment, SE
By storing the identification information of the communication device in the user / user data area included in the TUP message, the T.T. Three
8 Internet FAX or T.W. 30 public network FAX It is to determine whether or not.

The CPU 201 of the transmission-side apparatus executes T.S.T. 38 Internet FA
The identification information indicating that it is X is stored, a SETUP message is created, and it is transmitted to the receiving side via the LAN / IF 207. Upon receiving the SETUP message, the CPU 201 of the reception side device analyzes the user / user data area in the SETUP message, and the transmission source transmits the T.S.T. 38 Internet FA
If there is identification information indicating that the communication partner is X, the communication partner is designated as T.X. 38 Internet FAX, and otherwise determines that the communication partner is the gateway device 104. The CPU 201, in accordance with this determination result,
Select either IP mode or public mode. As described above, according to the present embodiment, the communication device on the other side can be correctly discriminated even if there is a communication delay, and a more suitable F
Communication can be performed in the AX mode.

[0089]

Other Embodiments Even when the present invention is applied to a system composed of a plurality of devices (for example, a personal computer, a scanner, a printer, a modem, etc.), a device composed of one device (for example, Internet FAX).
Device).

As a storage medium for supplying the program code, for example, a floppy (registered trademark) disk, a hard disk, an optical disk, a magneto-optical disk, C
A D-ROM, a CD-R, a magnetic tape, a non-volatile memory card, a ROM or the like can be used.

Further, the functions of the above-described embodiments are realized by executing the program code read by the computer, and the OS and the like running on the computer actually perform processing based on the instructions of the program code. The function of the above-described embodiment can be realized also by performing a part or all of the above.

Further, after the program code read from the storage medium is written in the memory provided in the function expansion board inserted in the computer or the function expansion unit connected to the computer, based on the instruction of the program code, A CPU or the like included in the function expansion board or the function expansion unit performs a part or all of the actual processing, and the processing can realize the functions of the above-described embodiments.

The present invention is applicable to the case where the program is distributed to a requester through a communication line such as personal computer communication from a storage medium in which a program code of software for realizing the functions of the above-described embodiment is recorded. It goes without saying that it can also be applied to.

[0094]

According to a first aspect of the present invention, communication with a public network facsimile terminal is performed via a facsimile gateway that mutually converts a facsimile packet conforming to the Internet facsimile standard and facsimile data conforming to the public network facsimile standard. It is possible to provide an Internet facsimile machine that performs More specifically,
It is possible to provide an Internet facsimile apparatus which controls transmission of facsimile packets so as to comply with the public network facsimile standard.

According to the second aspect of the present invention, when the partner device is also an internet facsimile device, the T.T. Three
It is possible to provide an internet facsimile apparatus that shortens unnecessary transmission intervals defined in 0 to transmit facsimile packets. That is, it is possible to provide an internet facsimile apparatus that can determine the type of the partner device and control the transmission interval of the facsimile packet based on the type.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration example of an Internet facsimile system according to a first embodiment.

FIG. 2 is a block diagram of the Internet facsimile machine according to the first embodiment.

FIG. 3 is a flowchart showing an example of a transmission process according to the first embodiment.

FIG. 4 is a flowchart showing an example of a reception process according to the first embodiment.

FIG. 5 is a sequence diagram showing an example of a transmission process according to the first embodiment.

FIG. 6 is a sequence diagram showing an example of a reception process according to the first embodiment.

FIG. 7 is a diagram showing an example of a transmission interval management table according to the first embodiment.

FIG. 8 is a diagram showing an example of a transmission interval management table according to the first embodiment.

FIG. 9 is a diagram showing a configuration example of an Internet facsimile system according to a second embodiment.

FIG. 10 is a flowchart showing an example of a transmission process according to the second embodiment.

FIG. 11: ITU-T Recommendation T. It is a figure explaining 30.

FIG. 12 is a sequence diagram of an IP mode according to the second embodiment.

FIG. 13 is a sequence diagram of a public mode according to the second embodiment.

FIG. 14 is a diagram showing an example of a transmission interval management table according to the second embodiment.

FIG. 15 is a flowchart showing an example of a reception process according to the second embodiment.

FIG. 16: ITU-T Recommendation T. It is a figure explaining 30.

FIG. 17 is a diagram showing an example of a destination information table according to the third embodiment.

FIG. 18 is a diagram showing a system configuration according to related art.

[Explanation of symbols]

900 ... T. 38 Internet FAX 901 ... T. 38 Internet FAX 102 ... T. 30 public network FAX 103 ... PSTN (public telephone switching network) 104 ... Internet / facsimile gateway device

Claims (47)

[Claims] 1. A facsimile apparatus for performing facsimile communication according to an Internet facsimile protocol, comprising: receiving means for receiving a predetermined signal transmitted from a communication device on the other side via the Internet; and the predetermined signal received by the receiving means. And a transmission control means for controlling the transmission interval of the facsimile packet based on the determination result. 2. The transmission control means includes an Internet facsimile mode in which the transmission interval is relatively short,
The facsimile apparatus according to claim 1, comprising a relatively long public facsimile mode. 3. A deciding means for deciding whether to communicate with the other party's communication device in the Internet facsimile mode or in the public facsimile mode based on the predetermined signal received by the receiving means. Further provided, the transmission control means, based on the determination of the determination means,
The facsimile apparatus according to claim 2, wherein a transmission interval of the facsimile packet is controlled. 4. The deciding means, based on a first signal, which is the predetermined signal received by the receiving means, starts a time measurement, and a value measured by the time measuring means is predetermined. A determination unit that determines whether the second signal is received as the predetermined signal by the reception unit before the threshold value is exceeded, and a value measured by the time measurement unit is determined as a result of the determination by the determination unit. If it is determined that the second signal is received by the receiving means before the threshold of
When the value controlled by the time measuring means by the receiving means is equal to or more than a predetermined threshold value, the communication with the other party's communication equipment is controlled so that the communication with the other party's communication equipment is performed. 4. The facsimile apparatus according to claim 3, further comprising: a control unit that controls communication to be performed in a public facsimile mode. 5. When the partner communication device is compatible with a public facsimile mode, the first signal and the second signal are received at a predetermined interval defined by a standard. The facsimile apparatus according to claim 4, wherein the facsimile apparatus is received by means. 6. The determination means determines whether or not the connection establishment message received as the predetermined signal by the reception means includes identification information indicating that the communication device on the other side is an Internet facsimile. When the determination means determines that the connection establishment message includes identification information, the determination means controls the communication with the partner communication device to be performed in the Internet facsimile mode, and The control means for controlling to perform communication with the other party's communication device in a public facsimile mode when it is determined that the connection establishment message does not include the identification information. Fax machine. 7. The partner communication device according to claim 6,
Facsimile-related equipment, storing means for storing in the connection establishment message identification information indicating that the other party communication equipment is an Internet facsimile, and the connection establishment message in which the identification information is stored by the storage means. A facsimile-related device comprising: a transmitting unit for transmitting to a device. 8. The connection establishment message is a ITU-T recommendation Q. 931 compatible standard SETUP
8. The facsimile apparatus according to claim 6, which is a message. 9. The facsimile apparatus according to claim 8, wherein the identification information is stored in a data area between users included in the SETUP message. 10. The communication device according to claim 1, wherein the communication device on the other side is a public network facsimile machine or a facsimile gateway connected to the public network facsimile machine. Facsimile machine. 11. The Internet facsimile mode is ITU-T recommendation T.264. 38 is a mode in which facsimile communication is performed with a communication device on the other side that complies with a standard compatible with T.38, and the public facsimile mode is ITU-
Recommendation T. The facsimile apparatus according to any one of claims 2 to 10, wherein the facsimile apparatus is in a mode for performing facsimile communication with a communication device on the other side that complies with a standard compatible with 30. 12. ITU-T Recommendation T. 38 conforming to the ITU-T Recommendation T.38. ITU-T Recommendation T based on the discrimination result of the discrimination means for discriminating whether the facsimile terminal conforms to the standard No. 38 or the facsimile gateway device for relaying the connection with the public network facsimile terminal. ． 38, a transmission interval control means for controlling a transmission interval of Internet facsimile protocol packets (IFP packets), and a packet transmission means for transmitting the IFP packet at a transmission interval controlled by the transmission interval control means. An internet facsimile machine characterized in that 13. The discriminating means transmits information about a destination designated at the start of facsimile transmission, an elapsed time from the start of facsimile communication until a predetermined IFP packet is received, or the communication device on the other side. 13. The internet facsimile apparatus according to claim 12, wherein the other party discriminates the type of the communication device based on the incoming identification information. 14. An Internet facsimile machine for communicating with a public network facsimile terminal via a facsimile gateway for mutually converting a facsimile packet conforming to the Internet facsimile standard and facsimile data conforming to the public network facsimile standard, Generating means for generating a facsimile packet corresponding to the public network facsimile standard; determining means for determining the transmission timing of the facsimile packet based on the type of the facsimile packet generated by the generating means; An internet facsimile apparatus comprising: a transmitting unit that transmits the facsimile packet according to the transmitted transmission timing. 15. The determining means determines the transmission timing of the second facsimile packet in accordance with information regarding a predetermined transmission interval for the first facsimile packet and the second facsimile packet having a predetermined relationship with each other. 15. The Internet facsimile machine according to claim 14, wherein the determination is made. 16. The storage device further comprises storage means for storing information regarding a transmission interval between the first facsimile packet and the second facsimile packet, wherein the determining means reads out information regarding the transmission interval from the storage means. 16. The Internet facsimile machine according to claim 15, wherein the transmission timing is determined. 17. The first facsimile packet is I
TU-T recommendation T.T. 30 is a facsimile packet corresponding to the CED tonal signal defined by the ITU-T Recommendation T.30. The Internet facsimile machine according to claim 15 or 16, wherein the Internet facsimile machine is a facsimile packet corresponding to the preamble defined in No. 30. 18. The first facsimile packet is I
TU-T recommendation T.T. 30 is a facsimile packet corresponding to the binary signal code DCS defined by the ITU-T Recommendation T.30. The Internet facsimile machine according to claim 15 or 16, wherein the Internet facsimile machine is a facsimile packet corresponding to the preamble defined in No. 30. 19. An IP facsimile machine for performing facsimile communication with a public network facsimile terminal conforming to the public network facsimile standard via a relay device connected to an IP network, wherein the IP facsimile machine is based on the public network facsimile standard. Creating means for creating a first facsimile packet and a second facsimile packet, a first facsimile signal on the public network side corresponding to the first facsimile packet, and a public network side corresponding to the second facsimile packet Transmission control means for controlling the transmission interval between the first facsimile packet and the second facsimile packet based on the transmission interval specified in the public network facsimile standard for the second facsimile signal of According to the transmission interval controlled by the control means, the first
An IP facsimile machine, comprising: a transmitting unit that transmits the facsimile packet and the second facsimile packet. 20. The I according to claim 19, further comprising timing means for measuring the transmission interval.
P facsimile machine. 21. The transmission interval between the first facsimile signal on the public network side and the second facsimile signal on the public network side is defined by ITU-T Recommendation T.264. 20. The IP according to claim 19, wherein the transmission interval is defined by 30.
Facsimile machine. 22. The public network facsimile standard is ITU.
T Recommendation T. 30 or the ITU-T Recommendation T.30. 22. The IP according to any one of claims 19 to 21, which is an upper or lower standard compatible with 30.
Facsimile machine. 23. A facsimile communication method for performing facsimile communication according to the Internet facsimile protocol, comprising a receiving step of receiving a predetermined signal transmitted from a communication device on the other side via the Internet, and the receiving step received in the receiving step. A facsimile communication method, comprising: a transmission control step of determining a type of the other communication device based on a predetermined signal, and controlling a transmission interval of the facsimile packet based on the determination result. 24. In the transmission control step, the Internet / facsimile facsimile device in which the transmission interval is relatively short.
24. The facsimile communication method according to claim 23, wherein the mode and the relatively long public facsimile mode are selectively used. 25. Based on the predetermined signal received in the receiving step, communication with the communication device on the other side is performed in an Internet facsimile mode, or
25. The method according to claim 24, further comprising a determining step of determining whether to perform in public facsimile mode, wherein the transmission controlling step controls a transmission interval of the facsimile packet based on the determination of the determining step. Facsimile communication method. 26. The determining step includes a time counting step for starting time counting based on the first signal which is the predetermined signal received by the receiving means, and a value measured in the time counting step is predetermined. A determination step of determining whether or not a second signal is received as the predetermined signal in the reception step before the threshold value is exceeded, and a value measured in the time measurement step is determined as a result of the determination in the determination step. Before the threshold of
When it is determined that the second signal has been received in the receiving step, control is performed to perform communication with the partner communication device in the Internet facsimile mode,
When the value measured in the time measuring step in the receiving step is equal to or more than a predetermined threshold value, a control step of controlling the communication with the partner communication device to be performed in a public facsimile mode is included. The facsimile communication method according to claim 25. 27. When the counterpart communication device is compatible with a public facsimile mode, the first signal and the second signal are spaced apart from each other by a predetermined interval defined by a standard. 27. The facsimile communication method according to claim 26, wherein the facsimile communication method is a signal transmitted by transmitting. 28. The determining step determines whether or not the connection establishment message received as the predetermined signal in the receiving step includes identification information indicating that the partner communication device is an Internet facsimile. In the determining step of determining, and in the determining step, if it is determined that the connection establishment message includes the identification information, the communication with the other party communication device is controlled to be performed in the Internet facsimile mode, and 26. If it is determined that the connection establishment message does not include identification information, a control step of controlling communication with the communication device on the other side in a public facsimile mode is included. Facsimile communication method. 29. The communication device according to claim 28 is a facsimile-related device, and a storage step of storing identification information indicating that the communication device on the other side is an Internet facsimile in the connection establishment message. And a transmitting step of transmitting the connection establishment message in which the identification information is stored in the storing step to the facsimile device, the facsimile communication method in a facsimile-related device. 30. The connection establishment message is an ITU-T.
Recommendation Q. SETU compliant with 931 compatible standards
30. The facsimile communication method according to claim 28 or 29, which is a P message. 31. The facsimile communication method according to claim 30, wherein the identification information is stored in an inter-user data area included in the SETUP message. 32. The communication apparatus according to claim 23, wherein the communication device on the other side is a public network facsimile machine or a facsimile gateway connected to the public network facsimile machine. Facsimile communication method. 33. The Internet facsimile mode is ITU-T Recommendation T.264. 38 is a mode in which facsimile communication is performed with a communication device on the other side that complies with a standard compatible with T.38, and the public facsimile mode is ITU-
Recommendation T. 33. The facsimile communication method according to any one of claims 24 to 32, wherein the facsimile communication mode is a mode in which facsimile communication is performed with a counterpart communication device that complies with a standard compatible with 30. 34. ITU-T Recommendation T. 38 is an Internet facsimile communication method in an Internet facsimile apparatus conforming to the ITU-T Recommendation T.38. No. 38-compliant facsimile terminal or a fax machine gateway device for relaying connection with a public network facsimile terminal, and the ITU-T Recommendation T based on the result of the determination step. ． 38, a transmission interval control step for controlling the transmission interval of Internet facsimile protocol packets (IFP packets), and a packet transmission step for transmitting the IFP packet at the transmission interval controlled by the transmission interval control step. An internet facsimile communication method characterized by the above. 35. In the determining step, information about a destination specified at the start of facsimile transmission, an elapsed time from the start of facsimile communication until a predetermined IFP packet is received, or the communication device of the other party transmits the information. The internet facsimile communication method according to claim 34, wherein the other party discriminates the type of the communication device based on the incoming identification information. 36. An internet facsimile apparatus for communicating with a public network facsimile terminal via a facsimile gateway for mutually converting a facsimile packet conforming to the internet facsimile standard and facsimile data conforming to the public network facsimile standard, A generation step of generating a facsimile packet conforming to the public network facsimile standard; a determination step of determining transmission timing of the facsimile packet based on the type of the facsimile packet generated in the generation step; and a determination step in the determination step. And a transmission step of transmitting the facsimile packet according to the transmitted transmission timing. 37. The determining step determines the transmission timing of the second facsimile packet according to predetermined transmission interval information regarding the first facsimile packet and the second facsimile packet having a predetermined relationship with each other. 37. The Internet facsimile communication method according to claim 36, wherein: 38. A storage step of storing information on a transmission interval between the first facsimile packet and the second facsimile packet, wherein the determining step reads information on the transmission interval from the storage step. 38. The Internet facsimile communication method according to claim 37, wherein transmission timing is determined. 39. The first facsimile packet is I
TU-T recommendation T.T. 30 is a facsimile packet corresponding to the CED tonal signal defined by the ITU-T Recommendation T.30. 39. The Internet facsimile communication method according to claim 37 or 38, which is a facsimile packet corresponding to the preamble defined in 30. 40. The first facsimile packet is I
TU-T recommendation T.T. 30 is a facsimile packet corresponding to the binary signal code DCS defined by the ITU-T Recommendation T.30. 39. The Internet facsimile communication method according to claim 37 or 38, which is a facsimile packet corresponding to the preamble defined in 30. 41. An IP facsimile communication method in an IP facsimile apparatus for performing facsimile communication with a public network facsimile terminal conforming to the public network facsimile standard via a relay apparatus connected to an IP network, wherein the first facsimile packet is First corresponding public network side
Of the first facsimile signal and the second facsimile signal on the public network side to be transmitted after the first facsimile signal, based on the transmission interval defined in the public network facsimile standard. Determining a transmission interval between the packet and a second facsimile packet corresponding to the second facsimile signal; and, after transmitting the first facsimile packet based on the transmission interval, the second facsimile packet. An IP facsimile communication method comprising: transmitting a facsimile packet. 42. The IP facsimile communication method, further comprising the step of timing the transmission interval, wherein the second facsimile packet is transmitted after the transmission interval is timed. 43. The transmission interval between the first facsimile signal on the public network side and the second facsimile signal on the public network side is defined by ITU-T Recommendation T.264. 42. The IP according to claim 41, characterized in that the transmission interval is defined in 30.
Facsimile communication method. 44. The public network facsimile standard is ITU
T Recommendation T. 30 or the ITU-T Recommendation T.30. The IP according to any one of claims 41 to 43, which is an upper or lower standard compatible with 30.
Facsimile communication method. 45. A facsimile communication program for causing a computer to function all of the means described in any one of claims 1 to 22. 46. Any one of claims 23 to 44.
A facsimile communication program for causing a computer to execute each of the steps described in the section. 47. The image output program comprises a plurality of software, and is executed on a single computer or distributedly executed on a plurality of computers. Alternatively, the facsimile communication program according to claim 46.