JP2707464B2 - Data communication method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to first and second data communication terminals connected to a public telephone line, and third and second data communication terminals connected to the public telephone line and a dedicated line. The present invention relates to a data communication method in a communication system including a fourth data communication terminal.

[Conventional technology]

Conventionally, for example, in facsimile communication, when broadcasting from one place to several places, instead of sending directly to the final destination, a signal that gives a relay instruction from a source to a facsimile with a relay broadcast function Is transmitted to a destination registered in advance in the relayed facsimile.

[Problems to be solved by the invention]

However, the conventional example has a problem that communication can be performed only between subscriber lines and transmission can be performed only to a destination registered in advance. However, when a dedicated line is used, the communication cost can be reduced by using the dedicated line in a section where the dedicated line is provided. For example, suppose you have a dedicated line between the head office in Tokyo and the branch office in Osaka. At this time, consider sending a fax from an office near Osaka to an office near Tokyo. First, a fax is sent from an office near Osaka to a branch office in Osaka. The Osaka branch uses the received hard copy to send the image signal to the Tokyo headquarters via a dedicated line, and the Tokyo headquarters uses the received hard copy to send the image signal to an office near Tokyo. In this way, the cost is much lower than direct fax transmission. However, this method involves resending faxes at the Osaka and Tokyo headquarters, which is troublesome and time consuming, and because the image output once as a hard copy is input again, image degradation may occur. There's a problem.

The present invention has been made under such circumstances,
An object of the present invention is to provide a data communication method in which a dedicated line can be used effectively and communication cost, labor and time can be saved.

[Means for solving the problem]

In order to achieve the above object, in the present invention, a data communication method is configured as in the following (1) and (2).

(1) A data communication method in a communication system including first and second data communication terminals connected to a public telephone line and third and fourth data communication terminals connected to the public telephone line and a dedicated line. When the first data communication terminal transmits data to the second data communication terminal, the first data communication terminal communicates with the third data communication terminal via the public telephone line. First terminal information for the third data communication terminal to transmit data to the fourth data communication terminal via the dedicated line, and wherein the fourth data communication terminal transmits the data via a public telephone line. Transmitting second terminal information for data communication to a second data communication terminal;
The data communication terminal transmits data to be transmitted to the second data communication terminal to the third data communication terminal via the public telephone line, and the third data communication terminal transmits the first data communication Based on the first terminal information received from the terminal, transmits the second terminal information and the received data received from the first data communication terminal via the dedicated line to the fourth data communication terminal The fourth data communication terminal, based on the second terminal information received from the third data communication terminal, via the public telephone line, the data received from the third data communication terminal And transmitting data from the first data communication terminal to the second data communication terminal via the third data communication terminal, the dedicated line, and the fourth data communication terminal. age Data communication method characterized in that.

(2) The first terminal information is information for identifying a speed dial number registered in the third data communication terminal, and the third data communication terminal receives the first Reading the speed dial information corresponding to the terminal information and calling the dedicated line; the second terminal information is information for identifying a speed dial number registered in the fourth data communication terminal. And wherein the fourth data communication terminal reads out information on abbreviated dialing corresponding to the received second terminal information, and makes a call to the public telephone line. Data communication method described in the item.

[Action]

According to the above configurations (1) and (2), required data can be transmitted from the first communication terminal to the second communication terminal via a public telephone line or a dedicated line in a short time without requiring acquisition.

〔Example〕

 Hereinafter, the present invention will be described with reference to examples.

FIG. 1 is a schematic configuration diagram of communication equipment according to one embodiment of the present invention. In the figure, 1 is a facsimile apparatus on the transmitting side to which an image is to be transmitted now, 2 is a facsimile apparatus on the receiving side which is the final destination of the image, and 3 and 4 are dedicated lines 7
The facsimile machines also connected to 5, 6 are subscriber telephone lines.

One-touch registration of the facsimile number of the facsimile apparatus 3, the extension number of the facsimile apparatus 4, and the facsimile apparatus 2 in the facsimile apparatus 1 so that the dedicated line 7 is used in consideration of the line use cost and the like. Keep it.

FIG. 2 shows the registration status of the NSS FIF number in the facsimile procedure signal in the memory of each of the facsimile machines 1, 3, 4, and 2 when communication is performed on the lines 5, 7, and 6 in FIG. It is shown. In FIG. 2, reference numeral 10 denotes a facsimile machine 3.
The facsimile number 11 is an extension number of the facsimile machine 4, and the number 11 is prefixed with a symbol '*' indicating the extension number. 12 is the number of the facsimile machine 2.

FIG. 3 is a block diagram showing a configuration of the facsimile apparatuses 1 to 4 with a memory. In the figure, 21 is a memory, 22 is a control circuit for controlling each part, 23 is a reading circuit, 24 is a recording circuit, 25
Is a calling circuit for dialing and calling a number given by the control circuit 22, 26 is an NCU (Network Control Unit) having a connection end between two lines, a dedicated line and a subscriber line, and 27 is a fax procedure signal or the like. This is a modem that modulates and demodulates image signals. 28 is a dedicated line and 29 is a subscribed telephone line. FIG. 4 is a flowchart of transmission in each facsimile machine, and FIG. 5 is a flowchart of reception.

 Next, the operation will be described.

In the facsimile machine 1 shown in FIG. 1, a button registered as one-touch is pressed as shown in FIG. The facsimile number "10" of the facsimile machine 3 registered at the first address in the memory 21 in FIG. 3 is read out by the control circuit 22 and sent to the calling circuit 25 to make a call. The second and subsequent numbers are sent to the modem 27, registered in the NSS FIF of the facsimile procedure signal, and transmitted in the format shown in FIG. In the facsimile apparatus 3 of FIG. 1, the NSS FIF is read from the modem 27 into the control circuit 22, and the numbers 11 and 12 in the NSS FIF are stored in the memory 21. Then, the received image is also stored in the memory 21. When the reception is completed, the facsimile apparatus 3 reads the number 11 in FIG. 2 stored in the first address from the memory 21 into the control circuit 22 and determines whether it is an extension or an outside line. Make a call to. Similarly, the number 12 stored in the memory 21 of the facsimile machine 3 is registered in the NSS FIF and sent to the facsimile machine 4. The device 4 stores the number 12 and the image in the memory 21 in the same manner as the device 3 performs, and calls the number 12 after the reception is completed. The device 2 confirms that no number is registered in the NSS FIF, receives the transmitted image, and completes the communication when the reception is completed.

According to the procedure described above, the image signal can be transmitted from the facsimile apparatus 1 to the facsimile apparatus 2 via a desired route, that is, the local line 5, the dedicated line 7, and the local line 6.

In the above embodiment, the facsimile numbers of all the facsimile apparatuses on the route are registered. However, the present invention is not limited to this. Is also good.

For example, in the facsimile machine 1 of FIG. 1, registration of the facsimile number of the facsimile machine 4 is omitted. However, an area code is attached to the number of the facsimile machine 2.
The image is transmitted from the facsimile apparatus 1 to the facsimile apparatus 3 in the same procedure as in the previous embodiment, and the apparatus 3 stores the facsimile number and image of the facsimile apparatus 2 in the memory 21.
After the reception is completed, the facsimile machine 3 sends the number of the facsimile machine 2 from the memory 21 to the control circuit 22. The control circuit 22 determines from the area code of the read number, finds the facsimile apparatus 4 closest to the facsimile apparatus 2, and makes a call to this. Then, the number of the facsimile machine 2 excluding the area code is registered in the FIF of the NSS and sent to the facsimile machine 4 together with a signal. The subsequent procedure is similar to that of the previous embodiment, and finally the image signal is transmitted to the facsimile apparatus 2.

The number to be transmitted may be a code such as an abbreviated dial. In short, it is sufficient that the fax number of the corresponding facsimile apparatus can be reproduced in the relay facsimile apparatus.

〔The invention's effect〕

As described above, according to the present invention, when data is transmitted from a first data communication terminal connected to a public telephone line to a second data communication terminal, the first It is possible to transmit data via the third data communication terminal, the dedicated line and the fourth data communication terminal, and it is possible to effectively use the dedicated line between the third and fourth data communication terminals, Communication costs, labor and time can be saved, and the communication contents do not deteriorate.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of the present invention, FIG. 2 is a diagram for explaining how to register a number in the embodiment, FIG. 3 is a block diagram of a facsimile apparatus used in the embodiment, FIG. Is a flowchart showing a transmission operation in the facsimile apparatus, and FIG. 5 is a flowchart showing a reception operation in the facsimile apparatus. 5,6 ... Phone line 7 ... Dedicated line 21 ... Memory 22 ... Control circuit

Claims (2)

(57) [Claims] 1. Data communication in a communication system comprising first and second data communication terminals connected to a public telephone line and third and fourth data communication terminals connected to the public telephone line and a dedicated line. In the method, when the first data communication terminal transmits data to the second data communication terminal, the first data communication terminal communicates with the third data communication terminal via the public telephone line. On the other hand, first terminal information for the third data communication terminal to transmit data to the fourth data communication terminal via the dedicated line, and the fourth data communication terminal is connected via a public telephone line. Transmitting second terminal information for performing data communication to the second data communication terminal, and transmitting data transmitted from the first data communication terminal to the second data communication terminal via the public telephone line. Before Transmitting to the third data communication terminal, the third data communication terminal transmits the first data via the dedicated line based on the first terminal information received from the first data communication terminal. Transmitting the second terminal information received from the data communication terminal and the received data to the fourth data communication terminal, wherein the fourth data communication terminal receives the second terminal information and the received data from the third data communication terminal; Transmitting the data received from the third data communication terminal via the public telephone line based on the terminal information of the third data communication terminal, the third data communication terminal, and the dedicated line from the first data communication terminal. And data transmission to the second data communication terminal via the fourth data communication terminal. 2. The first terminal information is information for identifying a speed dial number registered in the third data communication terminal, and the third data communication terminal receives the first The second terminal information reads out the speed dial information corresponding to the first terminal information and makes a call to the dedicated line. The second terminal information is used to identify a speed dial number registered in the fourth data communication terminal. And the fourth data communication terminal receives the second
2. The data communication method according to claim 1, further comprising reading out speed dial information corresponding to the terminal information and calling the public telephone line.