JPH0378345A - Communication control system - Google Patents

Abstract

PURPOSE:To eliminate wasteful communication such as direct mail by permitting a reception-side to identify a transmission-side by means of prescribed identification information so as to restrict an opposite destination to be communicated. CONSTITUTION:The ID code of the transmission-side Tx is previously registered in the reception-side Rx, and the transmission-side Tx of the opposite destination to be communicated is restricted by the ID code. Thus, communication can be restricted not only for the facsimile equipment 1 of the same maker but also for unspecific facsimile equipments 1. Thus, wasteful communication time by direct mail and the like can be avoided and the consumption of recording papers can be reduced. Then, a line L is used only for effective communication and the use rate of the line L can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a communication control system, and more particularly, to a communication control system in which a receiving side identifies a transmitting side and prevents communication with an unspecified number of communication terminals.

(Prior art) Communication control is performed between communication terminals according to a communication protocol. For example, in a facsimile terminal, CCXTT
The facsimile communication control is performed according to the facsimile communication protocol specified by the recommendation. Therefore, as long as the communication terminals have communication functions based on the same communication protocol, one communication terminal can communicate with an unspecified number of communication terminals.

Further, in contrast to the general communication protocol, a communication protocol unique to the manufacturer may be provided between communication terminals of the same manufacturer to restrict communication with communication terminals of other manufacturers.

(Problem to be solved by the invention) However, in a communication control method based on such a conventional communication protocol, it is generally possible to communicate with an unspecified number of parties between communication terminals that have the same communication protocol. As a result, the receiving side would receive unnecessary communications such as direct mail, and during this communication, it would be impossible to communicate with other necessary parties, making it impossible to use the line effectively. It was occurring. In facsimile machines, there is also the problem that recording paper is wasted by direct mail, etc., and paper runs out during necessary facsimile communication, making it impossible to receive the facsimile.

(Objective of the Invention) Therefore, the present invention enables the receiving side to identify the sending side using predetermined identification information and limit the parties with which it communicates.
The purpose is to provide a communication control method that eliminates wasteful communication such as direct mail and improves the effective line utilization rate.

(Structure of the Invention) In order to achieve the above object, the present invention provides communication control that starts data communication after exchanging predetermined communication control signals between communication terminals on the transmitting side and the receiving side to set predetermined communication conditions. In the method, the receiving side stores identification information for identifying a predetermined transmitting side, and when communicating the communication control signal, the transmitting side adds its own identification information to the predetermined communication control signal and transmits it, and the receiving side This is characterized in that data reception is started when the stored identification information and the transmitted identification information match, and data reception is rejected when the identification information does not match.

Hereinafter, the present invention will be specifically explained based on examples.

1 to 3 are diagrams showing a first embodiment of the present invention,
This is applied to facsimile machines.

FIG. 1 is a block diagram of the facsimile machine 1, and the facsimile machine 1 includes a CPU (CentralPro
cessing Unit) 2, ROM (Read
0nly Memory) 3, RAM (Rando
m Access Memory) 4, Scanner 5,
Plotter 6, modem 7, NCU (network control unit) 8.5I
109, a compression/expansion section 10, an operation display section 11, etc., and each section is connected to a bus 12.

The CPU 2 executes a sequence for the facsimile machine 1 according to a program stored in the ROM 3, and also executes a communication protocol to be described later.

The ROM 3 stores a program for executing a sequence for the facsimile device 1, and also stores a communication control program based on a communication protocol.

The RAM 4 stores identification information for identifying the facsimile machine itself or the other party by adding a predetermined code (ASCII code) to the registration number (telephone number) as a unique keyword. In facsimile communication, the format of the TSI (transmitting terminal identification) signal and C3l (called terminal identification) signal is set as shown in Fig. 2, and in this embodiment, a unique ID code is added to this format. shall be. For example, "01" is set and registered in the 16th and 17th digits of the format shown in FIG. 2 as the TSI ID code.

As the scanner 5, for example, COD (Change C
A line scanner using an ou-pld device is used, and the scanner 5 reads the document line by line and outputs it as image data.

As the plotter 6, for example, a thermal recording device using a thermal element is used, and the block 6 records on ordinary recording paper directly or indirectly via an ink sheet.

The modem 7 modulates the transmitted signal into a form suitable for transmission over the line when transmitting, and demodulates the modulated signal sent from the line when receiving.

A line is connected to the NCU 3, and the NCU 3 connects and disconnects the line.

5I109 is connected to modem 7, converts parallel data input via bus 12 into serial data and outputs it to modem 7, and also converts serial data input from modem 7 into parallel data and outputs it to bus 12. Transfer via.

The compression/expansion unit 10 uses the MH method (Modified Huffman method) or the MR method (Modified Read method).
etc. to compress and expand image information data.

The operation display unit 11 includes a display panel that prompts the operator to perform input operations, and various switches such as one-touch program keys that input command signals related to various types of transmission information. tell.

Next, the effect will be explained.

The present embodiment is characterized in that, during facsimile communication, the communication destination is limited by the TSI ID code registered in the RAM 4. This facsimile communication will be explained according to the communication control flow based on CCITT Recommendation T.30 shown in FIG. In the facsimile communication of this embodiment, it is assumed that the facsimile machine 1 shown in FIG. 1 is installed on both the transmitting side and the receiving side.

When the receiving side Rx receives a paging signal from the transmitting side Tx,
After sending out a CED signal (called station identification signal), the receiving side Rx sends out a C3I signal (called terminal identification signal) and a DIS signal (digital identification signal). At this time, the C3I signal indicates that the registration number shown in FIG.
is displayed on the operation display section 1J. Next, when the transmitting side Tx receives the C3I signal and the DIS signal, it transmits a TSI signal (transmitting terminal identification signal), a DO3 signal (digital command signal), and a TCP signal (training check signal). The receiving side Rx compares the TSI signal sent from the transmitting side Tx with the ID code (01'') stored in the RAM 4 to determine whether the registered contents shown in FIG. 2 are included.

If this ID code is not included, the receiving side RX immediately sends out a DCN signal (switching command signal) (not shown) and ends the communication because the sending side Tx is not registered in the RAM 4. Also, when the ID codes match,
If the training of the modem 7 using the TCP signal is successful, the receiving side Rx sends out a CFR signal (reception preparation confirmation signal).

When the transmitting side Tx receives the CFR signal, it transmits the image data (P
IX), and when the image data transmission is completed, an EOP signal (procedure end signal) is sent. Next, when there is no error in receiving the image data, the receiving side Rx sends the MC
When the F signal (message confirmation signal) is sent out and the sending side Tx receives the MCF signal, it sends out the DCN signal and ends the current communication.

As mentioned above, by registering the transmitting side Tx ID code in the receiving side Rx in advance and restricting the transmitting side Tx of the other party with which to communicate using this ID code, not only the facsimile machine 1 of the same manufacturer but also other Communication can now be restricted even to a specific number of facsimile machines 1. Therefore, it becomes possible to avoid wasted communication time due to direct mail etc., and
It is possible to reduce the consumption of recording paper.As a result, the line is used only for effective communication,
The effective utilization rate of lines can be improved.

(Effects) According to the present invention, since the receiving side identifies the sending side using predetermined identification information and limits the parties with which it communicates, unnecessary communications such as direct mail can be eliminated and the line can be effectively used. It can be used for

[Brief explanation of drawings]

1 to 3 are diagrams showing an embodiment of the communication control method according to the present invention, FIG. 1 is a block diagram of a facsimile machine applied to the communication control method, and FIG. A diagram showing an example of registered contents registered in a facsimile machine of
FIG. 3 is a communication control flow diagram of facsimile communication to which the communication control method is applied. 1...Facsimile machine, 2...CPU. 3...ROM. 4...RAM. 5... Scanner, 6... Profiler, 7... Modem, 8... NCU. 9...5r10. 10...Compression/expansion unit, 11...Operation display unit, Tx...Transmission side, Rx...Reception side. agent

Claims (1)

[Claims] In a communication control method in which a predetermined communication control signal is exchanged between communication terminals on a transmitting side and a receiving side to set predetermined communication conditions and then data communication is started, the receiving side identifies a predetermined transmitting side. When communicating the communication control signal, the sending side adds its own identification information to a predetermined communication control signal and transmits it, and the receiving side matches the stored identification information with the transmitted identification information. When the data reception starts and the identification information does not match,
A communication control method characterized by refusing data reception.