JPH11243479A - Facsimile equipment and transmission method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide facsimile equipment which is improved in transmission efficiency and economy by changing a G3 facsimile transmission into a transmission route through the facsimile network of ISDN, when the G3 facsimile transmission is not established. SOLUTION: A facsimile equipment 100 is constituted of a PSTN line control part 1 connected to a PSTN network 101, an ISDN line control part 3 connected to an ISDN network, a G3 facsimile communication control part 2 for transmitting transmission information to the incoming number of the transmission destination inputted from an operating part 12 and requesting retransmission to a main control part 9 in the case of transmission abnormality, a main control part 9 for requesting the retransmission to a G4 facsimile communication control part 4 corresponding to the retransmission request, a G4 facsimile communication control part 4 for controlling the transmission via the ISDN line control part 3 corresponding to the transmission request of the main control part 9, a storage part 10 for storing a communication control system, incoming number and communication result information, and an image information part 6 for storing the transmission information which has been read from a scanner 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a facsimile apparatus having a G3 facsimile communication and a G4 facsimile communication system and a transmission method.

[0002]

2. Description of the Related Art Recently, as a facsimile communication method, G
3 facsimile (specified in T series recommended by ITU-T)
Communication and G4 facsimile (defined in the T series of ITU-T recommendations) communication are often used. Therefore, for example, JP-A-63-086674 and JP-A-01-29
As disclosed in No. 2961, a facsimile machine exists so that both G3 facsimile communication and G4 facsimile communication can be supported.

[0003]

However, in the prior art, if communication is not established due to line characteristics in the G3 facsimile communication system, the communication is established even if retransmission is performed unless the line characteristics change. There is a problem that it does not.

[0004] The present invention has been made in view of the above problems, and when transmission abnormalities occur in G3 facsimile communication, an ISDN (Integrated Service) is required.
It is an object of the present invention to provide a facsimile apparatus and a facsimile transmission method which are excellent in transmission efficiency and economy by changing to a transmission path via a facsimile network of Digital Network (Integrated Services Digital Network).

[0005]

A facsimile apparatus according to the present invention is connected to a PSTN network. In a facsimile apparatus connected to an ISDN facsimile network, transmission information is transmitted to a telephone destination number of an input destination. G3 facsimile transmission means for transmitting data via the G3 facsimile transmission means;
G4 facsimile transmission means for transmitting via the ISDN facsimile network based on a telephone number of a transmission destination when a communication error occurs in facsimile transmission and the transmission information.

Also, the facsimile apparatus of the present invention has a PS
A facsimile apparatus connected to the TN network and connected to the ISDN facsimile network, for transmitting transmission information to the input destination telephone number via the PSTN network.
3 facsimile transmission means, and when the transmission information is transmitted in the G3 facsimile transmission means, stores communication method information indicating G3 facsimile communication, a destination facsimile destination number indicating the destination telephone number, and the transmission information. A first storage unit for storing data in the G3 facsimile transmission unit when the communication is abnormal.
Request means for requesting retransmission via the DN facsimile network; reading out the destination facsimile destination number and the transmission information from the storage unit by the request means;
And G4 facsimile transmission means for transmitting the transmission information to the destination telephone number via the ISDN facsimile network in place of the above communication format.

Further, there is provided a second storage means for storing error information of a communication result indicating that communication is not established in the G3 facsimile transmission means when a communication error occurs in the G3 facsimile transmission means, wherein the G4 facsimile transmission means comprises: Before replacing the communication format with the G4 communication format, reading out the communication method information and the error information from the storage unit and checking whether communication before retransmission is G3 facsimile communication and communication is not established. And

Further, the storage unit stores the communication system information,
It has a first storage unit that stores the destination number of the destination facsimile and the transmission result, and a second storage unit that stores the communication information.

Further, the setting of the destination facsimile destination number in the G4 communication format is set in user / user information of a call setting message of ITU-T recommendation.

Further, the facsimile transmission method of the present invention
A facsimile transmission method, comprising: a facsimile device connected to a PSTN network and connected to an ISDN facsimile network, wherein the facsimile device transmits transmission information to a destination telephone number. A first step of storing the transmission information, communication method information indicating G3 facsimile communication, and a destination facsimile destination number indicating the destination telephone number in a storage unit when transmitting the transmission information to a telephone number; When the transmission information is transmitted to the destination telephone number via the PSTN network and a communication error occurs, a communication result indicating that communication is not established is stored in the storage unit, and the transmission information is transmitted through the ISDN facsimile network. A second step of requesting transmission in step (a), and retransmitting the transmission information when a request for transmission to the ISDN facsimile network is made. A third step of identifying whether communication is possible or not, and, if retransmission is possible in the third step, whether the communication before retransmission is G3 facsimile communication based on the communication method information read from the storage unit. A fourth step of identifying, a fifth step of identifying whether communication is not established based on the communication result read from the storage unit if the communication is G3 facsimile communication in the fourth step, and a fifth step of identifying If the communication is not established, the destination facsimile destination number and the transmission information are read from the storage unit and replaced with the G4 communication format, and the transmission information is sent to the destination telephone number via the ISDN facsimile network. 6th to send to
And a step of:

Further, the storage unit stores the communication system information,
It has a first storage unit that stores the destination number of the destination facsimile and the transmission result, and a second storage unit that stores the communication information.

Further, the setting of the destination number of the destination facsimile in the G4 communication format is set in user / user information of a call setting message of ITU-T recommendation.

[0013]

Next, embodiments of the present invention will be described with reference to the drawings.

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

Referring to FIG. 1, an embodiment of the present invention includes a facsimile apparatus 100 and an analog line P.
STN (Public Switched Telep)
HST) PST connected to the network
N line 101 and ISDN connected to ISDN network
And a line 102.

The facsimile apparatus 100 includes a PSTN line control unit 1, a G3 facsimile communication control unit 2, an ISD
N control unit 3, G4 facsimile communication control unit 4, image storage unit 5, image processing unit 6, scanner unit 7, printer unit 8, main control unit 9, storage unit 10, display unit 11
And an operation unit 12.

Next, the operation of this embodiment will be described with reference to FIGS.

Referring to FIG. 1, first, a transmission original (transmission information) is set so that it can be read by the scanner unit 7, and a destination number (telephone number) is input from the operation unit 12, and the PS
Selects G3 facsimile communication via TN network and sets main control unit 9
Request for transmission.

The main control unit 9 requests the scanner unit 7 to read the transmitted document, and the scanner unit 7 passes the read image information to the image processing unit 6, and the image processing unit 6 stores the image information in an image. Stored in the unit 5. Further, the main control unit 9
Stores the transmission destination number (telephone number), which is input information from the operation unit, and information indicating G3 facsimile communication in the storage unit 10. That is, G3 is included in the communication method information of the storage unit 10.
In the facsimile communication, the called terminal called number information (the telephone number of the transmission destination) is written in the called number of the storage unit 10, respectively. Next, the main controller 9 controls the G3 facsimile communication controller 2
Request for transmission, and notify necessary information (such as a called number).

The G3 facsimile communication control unit 2 has a PSTN
It requests the line controller 1 to make a call to the PSTN network and establishes a call with the other party. Thereafter, the G3 facsimile communication control unit 2 transmits the image information read from the image processing unit 6 via the main control unit 9 to the transmission destination from the PSTN line control unit 1 via the PSTN line 101 by a facsimile transmission procedure.

After the end of the G3 facsimile transmission, the G3 facsimile communication control unit 2 notifies the main control unit 9 of the transmission result and stores it in the communication result information of the storage unit 10.

If the communication result at this time is not established (communication of G3 facsimile communication is not possible), the main control unit 9 having received the transmission result analyzes the transmission result, determines that the communication is abnormal, and communicates with the storage unit 10. Communication result in result information (not established)
Is stored. Further, the main control unit 9 confirms whether or not a retransmission mode is set as a device setting (not shown in FIG. 1 but a retransmission mode switch is set to ON so that retransmission can be performed). If in retransmission mode,
The main control unit 9 reads the communication system information and the communication result information stored in the storage unit 10, determines that the communication in the G3 facsimile communication system is not established, and adjusts the time by a timer not shown in FIG. Start up and wait until timeout: for example, 1 minute) to perform G4
Put in a call waiting state as facsimile communication. When the recall interval timer times out, the main control unit 9 passes the called number information and communication information (data indicating a communication request to the G4 facsimile network) read from the storage unit 10 to the G4 facsimile communication control unit 4. .

Upon receiving the transmission request, the G4 facsimile communication control unit 4 sets the called number information (destination telephone number) received from the main control unit 9 in the user / user information of the call setting message, and sets the call setting message. It requests the ISDN communication control unit 3 to transmit to the ISDN facsimile network. At this time, “161” (the number “161” indicates a mode of transmission in the G4 facsimile communication network) is set as the called number of the call setting message.

IS receiving a call setup message transmission request
The DN line control unit 3 connects to the other party by performing G4 facsimile communication with the ISDN facsimile network.

When connected to the other party, the G4 facsimile communication control unit 4 reads out the image information from the main control unit 9 via the image processing unit 6 from the image processing unit 5, and outputs the image information to the IS
The data is transmitted to the destination via the DN line control unit 3.

The call setup message is based on ITU-T Recommendation Q. 931 is an ISDN protocol.

FIG. 2 shows an example of a determination flowchart for performing transmission to the ISDN facsimile network when G3 facsimile communication is not established in the main control unit 9.

When there is an abnormal notification of the communication result from the G3 facsimile communication control section 2, the main control section 9 first determines whether or not retransmission is possible (step S1). Here, the main control unit 9 determines that the retransmission can be performed because the retransmission mode is set. Further, the main control unit 9
Reads communication system information at the time of a transmission request (retransmission request from the G3 facsimile communication control unit 2) from the storage unit 10 and determines whether the communication system is G3 facsimile communication (step S2).

Since the read communication method is the G3 facsimile communication method, the main control unit 9 determines that the communication method is the G3 facsimile communication method and determines that the communication is with the ISDN facsimile network. Next, the main control unit 9 reads the communication result at the time of the communication request (retransmission request from the G3 facsimile communication control unit 2) from the storage unit 10 and determines whether the communication result is not satisfied (step S3).

At this time, the main control unit 9 determines that the condition is not satisfied,
The called number at the time of the communication request (retransmission request from the G3 facsimile communication control unit 2) is read from the storage unit 10, and the G4 facsimile communication control unit 4 is instructed to perform communication with the ISDN facsimile network (steps S3 and S4).

[0031]

As described above, the effect of the present invention is as follows.
A facsimile apparatus having the G3 facsimile communication method and the G4 facsimile communication method can perform retransmission by performing communication with the ISDN facsimile network using the G4 facsimile communication method when communication in the G3 facsimile communication method is not established. Thus, communication can be established.

The reason is that the transmission route can be changed by passing through the ISDN facsimile network at the time of retransmission.

[0033]

[Brief description of the drawings]

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

FIG. 2 is a schematic flowchart of the operation of the main control unit of FIG. 1 when G3 facsimile communication is not established;

[Description of Signs] 1 PSTN line control unit 2 G3 facsimile communication control unit 3 ISDN line control unit 4 G4 facsimile communication control unit 5 Image storage unit 6 Image processing unit 7 Scanner unit 8 Printer unit 9 Main control unit 10 Storage unit 11 Display Part 12 Operation part

Claims (8)

[Claims] 1. A facsimile apparatus connected to a PSTN network and connected to an ISDN facsimile network, wherein a G3 facsimile transmission means for transmitting transmission information to the input destination telephone number via the PSTN network; G
G4 facsimile transmission means for transmitting via the ISDN facsimile network based on the telephone number of the transmission destination and the transmission information when a communication error occurs in G3 facsimile transmission when a communication error occurs in the 3 facsimile transmission means; A facsimile machine comprising: 2. A facsimile apparatus connected to a PSTN network and connected to an ISDN facsimile network, wherein: G3 facsimile transmission means for transmitting transmission information to an input destination telephone number via the PSTN network; G3
A first storage for storing, in a storage unit, communication method information indicating G3 facsimile communication, a destination facsimile destination number indicating the destination telephone number, and the transmission information when the transmission information is transmitted by facsimile transmission means; Means,
Request means for requesting retransmission via the ISDN facsimile network when a communication error has occurred in the G3 facsimile transmission means; and the requesting means transmits the destination facsimile destination number and the transmission information from the storage unit. A facsimile apparatus comprising: a G4 facsimile transmission unit that transmits the transmission information to the destination telephone number via the ISDN facsimile network by replacing the communication format with the read G4 communication format. A second storage unit for storing, in the storage unit, error information of a communication result indicating that communication is not established when a communication error occurs in the G3 facsimile transmission unit;
The G4 facsimile transmission means reads the communication method information and the error information from the storage unit before replacing the communication format with the G4 communication format, and determines that the communication before retransmission is G3.
3. The facsimile apparatus according to claim 2, further comprising checking whether or not the facsimile communication is not established. 4. A storage unit comprising: a first storage unit that stores the communication method information, a destination number of the destination facsimile, and the transmission result; and a second storage unit that stores the communication information. The facsimile apparatus according to claim 2 or 3, wherein the facsimile apparatus has: 5. The apparatus according to claim 2, wherein the setting of the destination number of the destination facsimile in the G4 communication format is set in user / user information of a call setting message of ITU-T recommendation. Facsimile machine. 6. A facsimile transmission method, comprising: a facsimile device connected to a PSTN network and connected to an ISDN facsimile network, wherein the facsimile device transmits transmission information to a destination telephone number. When the transmission information is transmitted to the destination telephone number, the storage unit stores the transmission information, communication system information indicating G3 facsimile communication, and a destination facsimile destination number indicating the destination telephone number. A first step, when the transmission information is transmitted to the transmission destination telephone number via the PSTN network and a communication error occurs, a communication result indicating that communication is not established is stored in the storage unit, and the transmission information is stored. A second step of requesting transmission via the ISDN facsimile network; and transmitting the request when there is a transmission request to the ISDN facsimile network. A third step of identifying whether or not the information can be retransmitted, and, if the retransmission is possible in the third step, the communication before retransmission is G3 facsimile based on the communication method information read from the storage unit. A fourth step of identifying whether the communication is a communication, a fifth step of identifying whether communication is not established based on the communication result read from the storage unit if the communication is a G3 facsimile communication in the fourth step, If the communication is not established in the fifth step, the destination number of the destination facsimile and the transmission information are read out from the storage unit and replaced with the G4 communication format, and the transmission information is transmitted to the destination via the ISDN facsimile network. Transmitting a fax to the telephone number. 7. A storage device comprising: a first storage unit for storing the communication system information, a destination number of the destination facsimile, and the transmission result; and a second storage unit for storing the communication information. The facsimile transmission method according to claim 5, further comprising: 8. The facsimile according to claim 6, wherein the setting of the destination number of the destination facsimile in the G4 communication format is set in user / user information of a call setting message of ITU-T recommendation. Communication method.