JPH03240355A - Facsimile communication system - Google Patents

Abstract

PURPOSE:To allow the system to use a facsimile equipment made by an optional manufacture by providing a device extracting a secondary address from a subaddress information part not substantially in use to a store and forward exchange. CONSTITUTION:Main address information is entered similarly to the case of sending to a G4 facsimile equipment by using a dial key of a G4 facsimile equipment 3 and secondary address information is entered in a sense of a entry of subaddress information, then the secondary address information is sent transparently in the subaddress information. On the other hand, a channel connecting to an ISDN line of a communication controller 13 of a facsimile store and forward exchange replies only when the main address information is coincident and the address information part not in use substantially is extracted and the secondary address is extracted according to the service code of the subaddress. Thus, the subaddress information part of the format is given to a CPU11, which separates the data to acquire the destination information or the like.

Description

[Detailed Description of the Invention] [Object of the Invention (Field of Industrial Application)] The present invention provides an ISD for a facsimile storage and forwarding device.
N (Integrated 5 services Di
The present invention relates to a facsimile communication system used when transmitting an image signal and a secondary address related to a distribution request from an ISDN or G4 facsimile device via a digital network (digital network) line.

(Conventional technology) In recent years, as communication services have become more sophisticated, IS
Various services using DN are being launched. here,
Conventionally, ISDN, G4 connected by ISDN line
Facsimile communication is performed between facsimile machines using a protocol as shown in FIG. When facsimile communication is performed between such ISDN and G4 facsimile machines, there is only one destination for each communication, and even when sending the same message to multiple destinations, the transmission time increases and line usage fees increase. increase Therefore, in such a case, the image signal is distributed by relaying using a facsimile storage/exchange device having a plurality of channels and an image signal storage function. In this case, ISDN is the source of the image signal.

From the G4 facsimile device, it is necessary to transmit a secondary address including the destination of the image signal to the facsimile storage and forwarding device using the ISDN and G4 facsimile protocols.

Therefore, in the past, as shown in Figure 5, ■SDN,
Two methods are used: a method in which a secondary address is included in the C8S signal that conveys setting information in the G4 facsimile protocol, and a method in which the secondary address is included in the CDUI signal and transmitted as shown in Figure 6. was.

However, according to such a method, ISDN and G4 facsimile machines include the secondary address in the signal, and in response to the secondary address being included in the signal, the secondary address is extracted from the signal. This requires a facsimile storage and forwarding device to extract the address, and there is a problem in that normally only devices from the same manufacturer can send and receive secondary addresses using the above method.

(Problem to be solved by the invention) As mentioned above, according to the conventional facsimile communication system,
Since the secondary address is transmitted using a predetermined signal in the SDN and G4 facsimile protocols, the G4 facsimile device of the originator and the facsimile storage and forwarding device involved in the relay must transmit and receive the secondary address using the predetermined signal. There must be a mutual understanding of the equipment, signal codes, etc., and this understanding is usually only achieved with equipment from the same manufacturer, so it is not possible to expand the system with other manufacturers. This was a problem.

The present invention has been made in view of the problems that the conventional facsimile communication system has as described above, and its purpose is to solve the problem when the source ISDN and the manufacturer of the G4 facsimile device are different from the manufacturer of the facsimile storage and forwarding device. but,
It is an object of the present invention to provide a facsimile communication system that enables the transmission and reception of secondary addresses.

[Structure of the Invention] (Means for Solving the Problems) In the facsimile communication system according to the present invention, when transmitting an image signal from a first facsimile device to a second facsimile device, once the image signal is received, A facsimile communication method in which image signals are transmitted via a facsimile storage and forwarding device that transmits stored image signals from the first facsimile device to a specified destination, the first facsimile device and the facsimile storage and forwarding device are connected by an ISDN line, and destination information is transmitted from the first facsimile device using a secondary address in a subaddress information section.

(Function) According to the above configuration, the facsimile storage and forwarding device is
If it is not connected to the N-line home bus, subaddress information is not necessary for line connection with the facsimile storage and forwarding device, and therefore there is no problem in using the subaddress information part to transmit the secondary address for distribution. There is no. Moreover, ISDN, G4 facsimile equipment is ISDN
It is a terminal that is connected to a line and is originally a terminal that sends out subaddress information, and there is no difference between manufacturers in this respect.

Therefore, as long as the facsimile storage and forwarding device has the function of extracting a secondary address from subaddress information, it is possible to send a secondary address to this facsimile storage and forwarding device from an ISDN or G4 facsimile device of a different manufacturer. Become.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram of a facsimile communication system using a facsimile communication method according to an embodiment of the present invention.

In the figure, 1 indicates a facsimile storage and forwarding device;
3 indicates ISDN, G4 facsimile machine, 4 indicates G3
Shows a facsimile machine. Each of these devices has an ISDN
They are connected via a network 2 having a line and a most public line. Of course, the G4 facsimile machine 3 is connected to the industrial SDN line, and the G3 facsimile machine is connected to the general public line. The facsimile storage and forwarding device 1 is equipped with a communication control device 13, a CPU II, and a magnetic disk device 12. The communication control device 13 has a plurality of channels, and each channel is connected to an appropriate line. The communication control device 13 receives the image signal sent from the facsimile device and transfers it to the CPU 11, and also transmits the image signal transferred from the CPU II to the facsimile device that is the desired destination. The CPU 11 stores the image signals transferred from the communication control device 13 in the magnetic disk device 12, manages the distribution of the image signals, and reads the required image signals from the magnetic disk device 12 when necessary.
and send it to the desired destination facsimile machine. Of course, in the system of FIG. 3, the facsimile machines are shown as one 04 facsimile machine 3 and one G3 facsimile machine 4, but generally a plurality of facsimile machines are provided.

The 04 facsimile device 3 described above has means for transmitting a secondary address including destination information as subaddress information in the ISDN communication protocol. For example, if you enter the telephone number or identification information (ID>) of the destination facsimile machine using the dial keys of the G4 facsimile machine 3,
The built-in CPU inputs the service code, sender (own device > ID)
, destination ID (telephone number), group number, box number, and password, and create subaddress information in the format shown in Figure 2.
Send to line.

In FIG. 2 above, the service code 21 is a code indicating that it is a secondary address consisting of 4 bytes, the source ID 22 is 6 bytes, and the destination ID 23 is 6 bytes x 8.
The group number 24 has a capacity of 4 bytes x 8 and is data for specifying the distribution group, and the box number 25 is 4 bytes and is used to identify the box when performing so-called post office box communication. information and password 2
6 consists of 8 bytes. Therefore, by using the dial keys of the G4 facsimile machine 3 to input the main address information in the same way as when transmitting to the G4 facsimile machine, and then inputting the secondary address information in the sense of sub address information, the second The secondary address information as shown in the figure will be transparently sent in the iA5 strings code in the subaddress information.

On the other hand, in the channel connected to the ISDN line of the communication control device 13 of the facsimile storage and forwarding device, a response is issued only when the main address information matches, and the sub-address information part that is not originally used is taken in and the secondary address is sent according to the service code of that sub-address. It has means for extracting the address. That is, by giving the subaddress information part in the format shown in FIG. 2 to the CPU 11,
1 separates these data and obtains destination information, etc.

In the system configured as described above, when performing facsimile communication from the G4 facsimile device 3 to the facsimile storage and forwarding device 1, the G4 facsimile device 3 is set off-hook and an open request is sent to the network 2 as shown in FIG. In response, an open indication is sent back from the network 2. Therefore, the G4 facsimile machine 3 sends out a SET UP signal in which the main address information and the secondary address are entered in the sub-address information section by operating the dial keys, and this signal is sent to the facsimile storage and forwarding device 1 via the network 2. This S
The main address information in the ET UP signal is detected and if it matches that of the device itself, a response, the COMN signal, is returned. At the same time, the secondary address of the subaddress information part is extracted and used for storage and exchange, and then, as shown in Figure 1, control signals are exchanged and image signals are transmitted using ISDN and G4 facsimile protocols. be exposed.

[Effects of the Invention] As explained above, according to the present invention, since the secondary address is included in the sub-address information part and transmitted, the facsimile machine inputs the secondary address by inputting the sub-address normally by dialing to specify the other party.・You can do it as if you were inputting it, and you don't need a special facsimile machine. Therefore, as long as the facsimile storage and forwarding device has a means to extract the secondary address from the subaddress information part that is not originally used, the facsimile device can be used by any manufacturer and is convenient for system expansion. become.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a communication control procedure according to an embodiment of the present invention, Fig. 2 is a diagram showing the format of a secondary address included in the subaddress information section, and Fig. 3 is a diagram showing a facsimile employing the communication method of the present invention. FIG. 4 is a block diagram of the system; FIG. 4 is a diagram showing communication control between G4 facsimile machines, and FIGS. 5 and 6 are diagrams showing a communication control procedure according to a conventional example. 1...Facsimile storage and forwarding device 2...Network 3...ISDN, G4 Facsimile device 4...G3
Facsimile device 11...CPU 12...Magnetic disk device 13...Communication control device

Claims (1)

[Claims] When transmitting an image signal from a first facsimile device to a second facsimile device, a facsimile storage and forwarding device receives the image signal, temporarily stores it, and delivers it to a destination specified by the first facsimile device. In a facsimile communication system in which image signals are transmitted via A facsimile communication method characterized by transmission by address.