JPS62219863A - Control system for communication line - Google Patents

Abstract

PURPOSE:To eliminate the need for arranging a special interface and an exclusive-use signal line for the communication line switching control and to simplify a constitution by providing a line switching signal generating part to output the switching signal of the communication line based upon the telegraphic message prepared by a telegraphic message preparing part. CONSTITUTION:An operator calls a communicating opponent by a telephone set 4 and inputs the command to switch a communication line from a keyboard 31'. The telegraphic message preparing part 21 of a central processing unit 51 receives the command, prepares the telegraphic message and sends it to a built-in type character dial system MODEM1. After a receiving circuit 11' receives the telegraphic message, the message is stored into a memory 13. A processor 12' sends the communication line switching signal to a communication line switching part 14. The communication line switching part 14 receives the communication line switching signal, and then, a communication line 71 is switched from a calling condition to a communication condition by a change over switch 15. Thereafter, the usual communication processing is executed.

Description

[Detailed Description of the Invention] [Summary] The device configuration is simplified by controlling the connection of the communication line from the communication state to the call state, and from the call state to the communication state for correspondence, using a message command.

[Industrial application field]

TECHNICAL FIELD The present invention relates to a communication line control method for a communication system that performs communication 9 calls via a communication line.

BACKGROUND ART Facsimile machines, computer communication systems, and communication systems are equipped with a network control device to connect the other party.

In the case of manual calling in which the connection partner is manually selected, a button is required for operator operation, so it is desirable to simplify the device configuration.

[Conventional technology]

FIG. 5 is a diagram showing the configuration of a conventional network control device for manual transmission.

Dial manually using the attached telephone, and after confirming connection with the other party, press button S. When dialing, the line and telephone are connected as shown by the solid line in the figure, but the button S
When the button is pressed, a connection completion signal for the modem is input to the modem.

When the input/output device is in a transmittable state, the modem sends out a line connection command, operates a relay in the network control device, and switches from a call state to a communication state using a changeover switch.

In this way, communication is performed using the communication line.

[Problem that the invention seeks to solve]

In this conventional communication line and control system, line switching is performed by operating a button, so a dedicated interface for this purpose is required, and signal lines must be provided.

[Means for solving problems]

FIG. 1 is a diagram explaining the principle of the present invention.

11 is a receiving section, 12 is a line switching signal generating section, 18 is a memory, 14 is a communication line switching section, 21 is a message creation section, and 31 is an input/output device.

[Effect]

When a communication line switching command is input from the input/output device 31, the message creation unit 21 creates a communication line switching message.

The communication line switching signal generation unit 12 outputs a communication line switching signal based on the created communication line switching message.

The communication line switching unit 14 receives the communication line switching signal and switches the communication line.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a configuration diagram of an embodiment of the present invention, in which parts equivalent to those in FIG. 1 are given the same reference numerals.

1 is a built-in character dial modem, 111 is a receiving circuit, ta is a memory, 81' is a keyboard, and 41 is a telephone communication device.

1, 12' is a processor, 51 is a central processing unit for the message creation section 21, 61 is a switch, 71 is a communication line, 8
1 is a line interface, 91 is a line adapter, 100
is the main body of the electronic computer.

When the operator calls the communication partner using the telephone 4 and confirms the connection, the operator inputs a communication line switching command from the keyboard 81' of the workstation.

Receiving this command, the message creation unit t~ of the central processing unit 51 creates the message shown in FIG.
Send to built-in character dial modem 1 via series interface.

After receiving this message at the receiving circuit 11°, it is stored in the memory 18.

SYN indicates a synchronization code, and STX indicates the start of text. C
Since person R2 indicates a request to switch the line from a talking state to a communication state, the processor 12' inputs the characters "CHGAI".
When the processor 121 recognizes this, the processor 121 sends a communication line switching signal to the communication line switching unit 14 .

When the communication line switching unit 14 receives the communication line switching signal, it switches the communication line 71 from the call state to the communication state using the changeover switch 15.

After this, normal communication processing is executed. That is, input data is sent to the other party via the exchange 611 and communication line 71, and data is received from the other party via the communication line 71 and the exchange 61 in correspondence.

When the communication δ processing is completed, a command to switch the communication line 71 is inputted from the keyboard 81' of the workstation.

The central processing unit 1t51 receives this command and creates the message shown in FIG. 4.

ICEGBI means a request for switching a line from a communication state to a call state.

This message sent to the built-in character dialing modem 1 is stored in the memory 13 and read by the processor 12'.

Upon reading ICHGB-, the processor 12' sends a communication line switching signal to the communication line switching unit 14.

When the communication line switching unit 14 receives the communication line switching signal, the changeover switch 15 switches the communication line from the communication state to the call state.

〔Effect of the invention〕

As described above, the communication line control method according to the present invention enables communication line switching control from the input/output device connected to the message creation unit, and therefore does not require a special interface for communication line switching control. , there is no need to install dedicated signal lines.

[Brief explanation of drawings]

Fig. 1 is a diagram explaining the principle of the present invention, Fig. 2 is a configuration diagram of an example of the present invention, Figs. 3 and 4 are diagrams showing a message requesting communication line switching, and Fig. 5 is a conventional communication line. It is a figure explaining a control method. 1: Character dial modem, 21: Message creation section, 11°: Receiving circuit, 12°: Processor, 18:
Memory, 14: Communication line switching unit, 31°: Input/output device. The principle of non-invention Figure 1 $3121 ■υδ times 0 direct 1 beg 1 phantom to 罎 ro 1 to acknowledge the telegram groove 4 example of the example of the book Structure: (2) The second leap is a diagram that takes one day to
5th eye

Claims (1)

[Claims] A communication device, an input/output device (81) connected to the message creation unit (21), and a communication line switching unit (14) that switches and connects the communication line to the communication path side or the communication path side connected to the communication device. In the communication system, a line switching signal generation unit (12) is provided that outputs a switching signal for the communication line based on the message created by the message creation unit (21), and from the input/output device (81), The control of the communication line is characterized in that the communication line switching command is input to the message creation unit (21) to create the communication line switching message, and the communication line is switched using the communication line switching message. method.