JPS62272661A - Connection system for facsimile communication - Google Patents

Abstract

PURPOSE:To avoid an useless recalling operation by grasping the abnormal state of an incoming side device by a caller side device. CONSTITUTION:Respective facsimile equipments are respectively constituted of communication network control parts 1A, 1B, modulator and demodulators 2A, 2B, transmission control parts 3A, 3B and terminal control parts 4A, 4B. When the first facsimile equipment calls the second facsimile equipment in a state in which a normal receiving operation is not desired due to the abnoramlity of the equipment, after the connection of a communication line, the first facsimile equipment informs the dial number of a local station and a calling and incoming conversion affirmative signal accoring to a calling and incoming conversion request from the second facsimile equipment of the abnormal state and when a calling and incoming recognition signal from the second facsimile equipment is received, the line is disconnected. Then, when the abnormality of the second facsimile equipment is recovered, the second facsimile equipment dials to the first facsimile equipment to transmit information.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a facsimile communication connection method.

In particular, it relates to a connection method in an abnormal state of the device.

[Conventional technology]

Conventional facsimile machine1. Due to equipment abnormality, etc.

If normal reception operation is no longer expected, automatic response is disabled, so the caller's facsimile machine will receive a predetermined number of calls at a predetermined interval, so that the caller's facsimile machine will know that the called party's facsimile machine is in an abnormal state. The call operation was repeated.

[Problems that the invention attempts to solve]

However, if the called party's facsimile machine is in a fatal error state, the calling party's re-call operation is
Even if the facsimile machine returns a facsimile, it will not be able to send a fax to 16, and the 2-millimeter device will be occupied by the facsimile 11 on the calling side while repeating the unnecessary re-calling operation, which will limit the time it can operate as a facsimile machine. There are drawbacks.

[Means for solving problems]

The present invention provides a connection method for a facsimile machine with an automatic call originating/receiving function through a telephone network, in which a called device has means for notifying an abnormal state to a calling device, and means for notifying a calling/receiving call conversion request. 1. The calling side device stores the calling station dial number sound notified by the calling side and makes a -A call after performing a layer call change operation. It is essential to have means for notifying the dialing number of the calling station in response to a call conversion request.

That is, in the present invention, when the first facsimile apparatus makes a call to the second facsimile apparatus, which is in a state where steady reception operation cannot be expected before the apparatus malfunctions.

After the communication line is connected, the first facsimile machine notifies its own dial number and a call conversion affirmation signal in response to a call conversion request from the second facsimile machine that is in an abnormal state, and sends the second facsimile IJ. The line will be disconnected after receiving a call confirmation signal (reception preparation confirmation signal) from the ironworker. Next, when the second facsimile machine recovers from the malfunction, the second facsimile machine dials the first facsimile machine and transmits the information.

〔Example〕

An embodiment of the present invention will be described and explained with reference to the drawings.

FIG. 1 is a block diagram of the above embodiment. 1st
In the figure, two similar sets of facsimile machines with automatic call/receive functions are connected via a communication network 5. The valley facsimile machines each have a communication network control unit IA and an IB modem unit 2A.
, 2B transmission control units 3A, 3B and terminal control units 4A, 4
## is made from B.

The calling hand section will be explained. The terminal control unit 4A notifies the transmission control unit 3A of the dial number of the other station, and the communication network control unit IA? : Automatically dials the other party's station.

The incoming call procedure will be explained. The communication network control unit IB detects the ringing signal and notifies the transmission control unit 3B of one incoming call,
The transmission control unit 3B notifies the terminal control unit 4B.

Transmission of procedure signals will be explained. The procedure signal received from the telephone network 5 through the communication network control section IB is notified to the transmission control section 3B through the modulation/demodulation device 2B.

FIG. 2 is a diagram for explaining the procedure for making and receiving calls f:. Here, the procedure signal is International Telegraph and Telephone Advisory Committee Recommendation T3.
0.

FIG. 2(a) shows the normal procedure for converting a single call.

When the calling device A dials the called device B which is in an abnormal state, the B station receives a ringing signal and automatically responds, and after the called station is identified, a non-standard device which is an initial identification signal is dialed. The identification signal and digital identification signal are returned to the A-station side. Here, the non-standard equipment identification signal is an optional signal for identifying the request of a specific user, and indicates an abnormal state on the B side side and an originating/incoming call conversion request using a specific pattern of a non-standard equipment frame and a specific call conversion request. do it like this.

Upon receiving this, station A judges the identification signal of the non-standard equipment and determines whether it is a call conversion request from station B or not. v+
5.

, and if the device on the A side is in a state where it is possible to convert outgoing/incoming calls, it sends out an identification signal set by the non-standard device, and sends out/incoming calls with a conversion confirmation signal, a preset outgoing/incoming call conversion password, and A. Notify the station dial number. The identification signal set to non-standard equipment is an optional signal for identifying the request of a specific user, and indicates the confirmation signal for call/call conversion in a specific VIVTO, and indicates the call conversion password in a specific pattern.

Furthermore, the dial number of the own station is shown in a specific pattern. On the B station side for non-standard equipment settings.

It memorizes the departure/arrival PI' conversion password and the dial number of station A, and sends out a reception preparation confirmation signal. Station A, which has received the reception preparation confirmation signal, sends a line disconnection command and disconnects the line.

Next, when the abnormality on the B station side is recovered, call conversion is performed, and automatic dialing is performed to the dial number of the A station that was stored at the time of receiving the identification signal set by the non-standard device. Station A automatically responds with all the ringing signals, and following identification of the called station,
The non-standard device identification signal and digital identification signal 1'6-, which are initial identification signals, are returned to the 13th station side. Upon receiving these signals, the B station sends non-standard device command 2 and all digital intrusion commands to the A station. Here, the command of the non-standard equipment is option 1B to identify the request of a specific user. %'It is shown as a pattern.

In response to the command from the non-standard equipment, the A station side judges the call conversion password.If it matches the call conversion password sent to the B station before the call change, no call is sent! After sending out the signal tone set by the Af device, information is then transmitted from the A station to the B station in accordance with the normal 7-tooth comb procedure.

If a mismatch is found during the above password determination on the A station side, a one-line disconnection command is sent to disconnect the line. This procedure is shown in FIG. 2(b).

In addition, station B sent a request for conversion of arrival/departure flight using the non-standard equipment identification signal and digital identification signal, but
If the non-standard setting frame sent from the station side does not include an affirmative signal for requesting modification of outgoing/incoming calls, a line disconnection command is sent to disconnect the line. This procedure is shown in FIG. 2(C).

In addition, if station A does not have a call conversion function, or
If the station side is unable to perform call conversion, a line disconnection command is sent to the non-standard equipment identification signal and digital identification signal from the B station side, and the line is disconnected. This procedure is shown in Figure 2 (dl).

Note that this function can be stopped by internal settings, and the conventional operation of not automatically responding even when receiving a joining/ging signal from the A station is also possible. This procedure is shown in FIG. 2(e).

〔Effect of the invention〕

As explained above, the present invention is advantageous because the calling side device can grasp the abnormal state of the called side device.

This is to avoid wasteful re-calling (and not limit the time it can operate as a facsimile machine due to unnecessary re-calling), but also to avoid wasted waiting time from recovery of the called device to communication. There is an effect that 1B can be reliably carried out without requiring the entire system.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the conversion procedure for outgoing and incoming calls. The procedure when the passwords do not match, (C) in the same figure is the procedure when the calling side does not have a call conversion function, and (d) in the figure shows the procedure when the calling side does not have a call conversion function, or when the calling side does not have a call conversion function. (e) in the same figure shows the procedure when the called side does not have a call conversion function or when the called side does not request call conversion. IA , IB...Communication network control unit, 2A, 2B...
...Modulation/demodulation device, 3A, 3B...Transmission control section, 4A. 4B...Terminal control unit, CHD, 111. Called station identification, CFR... Receiving preparation confirmation, DCN...
...Line connection command, DI8...Digital identification signal, DTC...Digital transmission command, N
SC...Non-standard equipment command, NSF...
・Non-standard equipment, NSS, ・11. Non-standard mounting muscle 10 Arrow... Jiego Tohsuzoku - D call side (A simple) Muscle 2 Diagram (S)

Claims (1)

[Claims] The first and second automated systems are composed of a transmission control unit that controls communication procedures, a modem device that modulates and demodulates procedure signals, a communication network control unit that controls calls to and from the communication network, and a terminal control unit that collectively controls them. When a first facsimile machine makes a call to a second facsimile machine that is in a state where normal reception operation cannot be expected due to an abnormality in the facsimile machine with a call originating/receiving function, after the communication line is connected, the first facsimile machine: In response to a call conversion request from the second facsimile machine that is in an abnormal state, the dial number of the own station and a confirmation signal for call conversion are notified, and the line is disconnected after receiving a call confirmation signal from the second facsimile machine. A connection method for facsimile communication, characterized in that the second facsimile device dials the first facsimile device and transmits information when the second facsimile device recovers from an abnormality.