JPH03126359A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To allow the facsimile equipment to cope with a traffic change by detecting and counting a new incoming call to a busy line and controlling number of lines used for calling based on number of incoming calls for a prescribed time. CONSTITUTION:Line interface sections 11-14 each consist of a level conversion circuit connecting each communication port to an ISDN, a D-channel controller and D-channel and B-channel multiplexer and a communication control section 21-24 consists of the B-channel controller and a communication control circuit, and the line interface sections 11-14 send and receive a B-channel signal and a D-channel control signal. Moreover, a control section 3 consists of a microprocessor and its peripheral circuit, counts incoming call detection signals 301-304 from communication control sections 21-24 corresponding to each line and applies outgoing/incoming call control to each line based on the result. Thus, the equipment copes with timewise change in the traffic of outgoing and incoming calls and the communication system is made efficient.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine, and more particularly to a facsimile machine that performs line control when accommodating a plurality of lines.

[Conventional technology]

Conventional facsimile machines do not consider the distinction between outgoing and incoming calls at all, or they predict outgoing and incoming traffic in advance and classify the entire line into outgoing, incoming, etc., and dedicate at least some lines for incoming calls. These settings were made during equipment installation.

[Problem to be solved by the invention]

The above-mentioned conventional facsimile apparatus has the disadvantage that incoming calls cannot be accepted for a long time when the line is all used for broadcasting messages, etc., because the former line is not secured for incoming calls. In addition, in the latter case, the types for outgoing and incoming calls are fixed at the time of device installation based on traffic predictions, so there is a drawback that it is not possible to respond to changes in traffic, and lines are left unnecessarily open.

[Means to solve the problem]

The facsimile device of the present invention accommodates a plurality of lines and uses the lines independently to send and receive messages, and includes means for detecting an incoming signal notified from an exchange to the line in use; The apparatus includes means for counting the number of incoming calls for a predetermined period of time and controlling each line to designate only incoming calls based on the result.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention.

The line interface units 11 to 14 connect each communication boat to I
It is composed of a level conversion circuit for connecting to SDN, a D-channel (D-ch) controller, and a D-ch, B-channel (B-ch) multiplexer, and the communication control units 21 to 24 are configured as a B-ch controller and a communication control unit. Consisting of circuits, line interface sections 11 to 1
The control unit 3 is configured by a microprocessor and its peripheral circuits, and sends and receives incoming call detection signals 301 to 304 from the communication control units 21 to 24 corresponding to each line. is counted, and based on the results, the outgoing and incoming calls to each line are controlled.

Next, an example of operation will be described below. The facsimile machine shown in Figure 1 accommodates four ISDN lines, and currently has four ISDN lines.
All lines are used to send messages. At that time line 1
When there is an incoming call, the line interface section 11 is notified through the ISDN D-ch, and its output 201 is transmitted to the control section 3 as an incoming call detection signal 301 via the line control section 21. The control unit 3 memorizes this information, and when the communication using the line 1 is completed, it stops calling from the line 1 for a predetermined period of time, leaving the line free for new incoming calls. Similarly, line 2
If an incoming call is detected while the line is in use, the same procedure as for line 1 described above is taken. However, such treatment is not performed for line 3.4. By performing the above processing, the facsimile machine uses all the lines for sending when there is no incoming call, and when it detects an incoming call, it uses half of the accommodated lines exclusively for receiving calls for a predetermined period of time. be able to.

〔Effect of the invention〕

As explained above, the present invention provides a facsimile device that accommodates multiple lines, when connected to a network having means for notifying new calls to the line in use, By detecting and counting the number of calls and controlling the number of lines used for outgoing calls based on the number of incoming calls in a predetermined time, it is possible to respond to temporal changes in outgoing and incoming traffic and build an efficient communication system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. 3... Control unit, 11, 12, 13.14... Line interface unit, 21, 22, 23.24... Line control unit, 101, 102, 103, 104... Line signal, 201, 202, 203, 204... Line control signal, 301, 302, 303, 304... Incoming call detection signal.

Claims (1)

[Claims] In a facsimile machine that accommodates a plurality of lines and uses the lines independently to send and receive messages, the facsimile apparatus includes a means for detecting an incoming signal notified from an exchange to the line in use, and a means for detecting the number of incoming calls for a predetermined period of time. 1. A facsimile apparatus comprising means for counting and controlling each line to designate only incoming calls based on the result.