JPH05136974A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To make an effective re-calling by changing the communication mode, call setting message, or timer setting condition for re-calling when the call setting fails. CONSTITUTION:When the call setting fails at the time of picture transmission, the communication mode of the self device is changed according to the content of the reason display information elements to be informed from the network and the information element in the call setting message is reset, automatically performing re-calling. According to the content of the information element of the call control signal to be informed from the network, an LCD 6 switches the type of message displayed on the display means such as printers and its generation method. Thus, an effective re-calling can be performed, resulting in the effective display. Thus, the convenient facsimile equipment can be provided by improving the automatic calling function and the message display function.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine having an automatic recall function when a call is unsuccessful.

[0002]

2. Description of the Related Art Conventionally, in a facsimile machine having an automatic recall function of this kind, even if a call is rejected due to a mismatch of terminal attributes with the other party at the time of image transmission, the recall call is made as it is. It has become. Further, the time interval for making such a re-call was always constant.

Also, conventionally, a facsimile machine connected to an ISDN network has been known which has a function of displaying a message included in a reason display information element notified from the network on a display unit and notifying the operator. ..

[0004]

However, since the above-mentioned conventional example has only the automatic recall function for repeating the call in the same communication mode, even if the other terminal is a facsimile machine, Even if the call setup is rejected due to different layer attributes, the reason for rejection cannot be canceled by the automatic recall operation,
It is inconvenient because the operator must give up the communication, or the operator must refer to the message display and switch the communication mode to make a call. In addition, constantly calling again at the same time interval may cause repeated useless calling with a low probability of success.

Further, in the facsimile apparatus for displaying the above message, for example, the message data held in the apparatus is selected and displayed according to the reason code included in the reason display information element, or the user data is displayed. With a user information element analysis function, the characters corresponding to the character codes in this information element are displayed in order. However, in the former case, when the correspondence between the message code and the message content is changed, it is necessary to change the internal data of the device, and there is a drawback that it cannot be immediately dealt with. Further, in the latter case, although the latest message can always be obtained, there is an inconvenience that the message cannot be displayed in the case of a call control signal having no user / user information element.

An object of the present invention is to provide a facsimile apparatus which is easy to use by improving the automatic calling function and the message display function.

[0007]

According to the present invention, when a call setting is unsuccessful during image transmission, the communication mode of the own device is changed according to the content of the reason display information element notified from the network, and The information element in the call setup message is reset and the call is automatically reissued.

Further, according to the present invention, the type of message displayed on the display means such as an LCD or a printer and the generation method thereof are switched according to the content of the information element of the call control signal notified from the network.

Further, according to the present invention, if the call setup is unsuccessful at the time of image transmission, the condition of the timer value for making the recall call is changed according to the content of the reason display information element notified from the network. Is to do.

[0010]

1 is a block diagram showing a first embodiment of the present invention.

In the figure, a CPU 1 is a central control unit, and controls the entire apparatus according to the contents of a program stored in a ROM 2. Further, the RAM 3 is used as a work area if necessary.

The original is read by a contact sensor (CS) 10 and read by a read control gate array (RC).
Image data (DRA)
M) 4. The image stored in the DRAM 4 is expanded and decoded by the recording control gate array (W-CNT) 9 and printed out on the recording paper by the laser printer (LBP) 11 or the dual port interface (DP-IF) 31. Through the communication control unit (SUBCPU) 41 to be transmitted to the ISDN line.

Further, the operator can perform various instructions and settings by depressing the keyboard (KEY) 7, and the contents thereof can be confirmed on the display unit (LCD) 6.
CPU 1 is a panel control gate array (OP-CNT) 5
The key input data is detected through and the necessary data is displayed on the LCD 6.

The SUBCPU 41 controls the communication module according to the contents of the program stored in the ROM 42. Further, the RAM 43 is used as a work area as needed.

The call control data generated by the SUBCPU 41 is the HDLC controller (HDLC-CNT (D)).
46 is HDLC formatted as a call control signal by 46, and by the layer 1 driver (S / T-TR) 50,
It is sent to the ISDN line at a transfer rate of 16 Kbps.

On the contrary, the call control signal from the ISDN network is taken out as digital data by the S / T-TR 50, the HDLC format check is performed by the HDLC-CNT (D) 46, and there is no error data. After the confirmation, the SUBCPU 41 is notified as call control data. If an error is detected, send a resend request signal until the correct signal is received,
Repeat this for a fixed time.

The G4 transmission data is HDLC-CNT (B
1) 44 or (B2) 45 HDLC format, and sent out to the ISDN line by the S / T-TR 50 at a transfer rate of 64 Kbps.

The G4 reception signal is taken out as digital data by the S / T-TR 50, and the HDLC-CN signal is obtained.
An HDLC format check is performed at T (B1) 44 or (B2) 45, and after confirming that the data is error-free, the SUBCPU 41 is notified as G4 reception data. If an error is detected, a retransmission request signal is transmitted, and this is repeated for a fixed time until a correct signal can be received.

The G3 transmission data is a modulator / demodulator (MODE).
M) 47 is PM-AM modulated and then PCM-C
Digitized by ODEC49, S / T-TR5
0 is sent to the ISDN line.

The G3 reception data is taken out as digital data by the S / T-TR 50, and the PCM-CO
After being analogized by DEC49, MODEM47
The signal is demodulated and is notified to the SUBCPU 41. In particular,
The received image data is transferred to the CPU 1 through the DP-IF 31 and stored in the DRAM 4.

The voice is the handset (HND) 4
8 to the ISDN line through the PCM-CODEC 49. Conversely, from the ISDN line to PCM-C
It is transferred to the HND 48 through the ODEC 49.

FIG. 2 is a schematic diagram showing the format of the reason display information element included in the message indicating the rejection of the call setup obtained from the ISDN network. In addition, the contents of illustration are TTC (Telephone and Telephone Technical Committee) standard JT-Q931.
It complies with.

In the calling procedure, when the higher layer compatibility included in the call setup message does not match the partner terminal, a message such as release completion is sent. Then, the reason display information element as shown in FIG. 2 is usually included in this message.

FIG. 3 is a flow chart showing the control at the time of re-calling when a message indicating such call setup rejection is received.

When the SUBCPU 41 receives a message from the ISDN network indicating that the call setup is rejected such as release completion (S1), it analyzes the message and determines the reason display information element (S2).

If the reason code is "# 88 terminal attribute mismatch" (S3), the diagnostic information is analyzed (S4). Here, when the diagnostic information indicates high layer compatibility (S5), the calling mode of the own device is checked (S5).
6) If the call is made by G4, the communication mode is switched to G2 / G3 (S7), and if the call is made by G2 / G3, the communication mode is switched to G4 (S).
8).

Then, the call setup message corresponding to the new communication mode is recreated (S9) and the call is reissued (S1).
0).

In this way, when the attribute mismatch due to high layer compatibility is changed and the communication mode and the call setup message are changed and the call is reissued, the reason for refusal can be canceled and proper communication can be performed.

Next, a second embodiment of the present invention will be described.

In the second embodiment, the type of message displayed on the display means and the generation method thereof are switched according to the content of the information element of the call control signal notified from the ISDN network.

The structure of the apparatus is the same as that shown in FIG. In addition, here, from the ISDN network, as shown in FIG.
A case will be described in which a message indicating the rejection of the call setting including the reason display information element shown in 1 is received.

FIG. 4 is a schematic diagram showing a format of a user / user information element associated with the reason display information element. Note that this user / user information also complies with the TTC standard JT-Q931.

FIG. 5 is a flow chart showing the control for selecting the display message generating method in the second embodiment.

In this embodiment, the user sets the priorities of the types of messages to be displayed by operating the keyboard (KEY) 7 in advance. Here, kanji, kana, internal messages, received messages are received. It is assumed that the codes are set in order.

The SUBCPU 41 analyzes the received call control signal and checks whether there is a message to be displayed such as a reason display information element (S21).

Then, when it is necessary to display the message, the presence or absence of the user / user information element is checked (S2
2) If yes, check whether there is a kanji code (S2
3), if there is, display the kanji according to the code (S2
4).

If there is no kanji code, the presence or absence of a kana code is checked (S25), and if there is, a kana is displayed according to the kana code (S26).

If there is no appropriate code in the information element or the call control signal has no user / user information element, the message code such as the reason code is checked and the corresponding message in the device is detected. It is searched whether there is any (S7). If it has a corresponding message, it is displayed (S8), and if it does not, the code is displayed as it is (S29).

The priority order is not limited to the above example, but can be arbitrarily set by the user. Also, different priorities may be set depending on whether the display target is a display device such as an LCD or a file such as a communication management report.

Next, a third embodiment of the present invention will be described.

In the third embodiment, when the call setup is unsuccessful, the conditions for recalling are changed according to the contents of the reason display information element notified from the ISDN network, and the recalling is performed. .. As the reason display information element, for example, the one shown in FIG. 2 is used.

FIG. 6 is a flow chart showing the operation for setting the recalling timer in the third embodiment.

First, the SUBCPU 41 sets each value of the recalling timer within a range conforming to the standard by the input from the operator or the data in the ROM 42.

Next, when the SUBCPU 41 receives a message such as release completion indicating the rejection of the call setup from the ISDN network (S31), it analyzes this and determines the reason display information element (S32). If there is no reason display information element, the judgment cannot be made, so the recalling timer is set to a default value (S33).

If the reason code is "# 38 network failure" or "# 27 partner terminal is out of order" (S34),
Since the call is not accepted even if the call is recalled immediately, the timer is set to the maximum value (S35).

If the reason code is such that "# 42 switch congestion" is the reason why the recalled call is likely to be accepted after some time (S36), the timer is set to an intermediate value (S37).

If the reason code is a temporary refusal such as "# 17 incoming user busy" (S38), there is a high possibility that the call will be accepted even if the call is recalled immediately. Therefore, the timer is set to the minimum value. Yes (S39).

The reason code is "# 49" other than the above.
If it has a value of "service unavailable class" or more (S40), the re-calling with the same call setting message is meaningless, and the operator is instructed (S41).

After expiration of the timer thus set,
The SUB CPU 41 performs a recalling operation. It should be noted that although specific timer values are not shown in the above description, these can be arbitrarily set within the range of the standard.

[0050]

According to the present invention, when the call setup is unsuccessful, the communication mode and call setup message for re-calling or the setup of the timer are set according to the contents of the reason display information element notified from the ISDN network. By changing the conditions, it is possible to make an effective call again.

Further, according to the present invention, effective display can be performed by switching the type of message displayed on the display means and the method of generating the message according to the content of the reason display information element.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a schematic diagram showing a format of a reason display information element used in the first embodiment.

FIG. 3 is a flowchart illustrating the operation of the first embodiment.

FIG. 4 is a schematic diagram showing a format of a user / user information element used in the second embodiment of the present invention.

FIG. 5 is a flowchart explaining the operation of the second embodiment.

FIG. 6 is a flowchart illustrating the operation of the third embodiment.

[Explanation of symbols]

 1 ... CPU, 2, 42 ... ROM, 3, 43 ... RAM, 4 ... DRAM, 5 ... OP-CNT, 6 ... LCD, 7 ... KEY, 8 ... R-CNT, 9 ... W-CNT, 10 ... CS, 11 ... LBP, 31 ... DP-IF, 41 ... SUBCPU, 44-46 ... HDLC-CNT, 47 ... MODEM, 48 ... HND, 49 ... PCM-CODEC 50 ... S / T-TR.

Claims (4)

[Claims] 1. A facsimile apparatus having a communication means connectable to an ISDN network and having a function of selecting a communication mode of G2 / G3 or G4, wherein call setting is unsuccessful during image transmission. In this case, according to the content of the reason display information element notified from the network, while changing the communication mode of the own machine, resetting the information element in the call setup message, and having a control means to automatically call again Characteristic facsimile machine. 2. A facsimile apparatus having a communication means connectable to an ISDN network, a display means for displaying a message to an operator, and a generation means for generating a display message, wherein a call control signal notified from the network is provided. A facsimile apparatus comprising control means for switching between a type of message displayed on the display means and a generation method thereof according to the content of an information element. 3. The facsimile apparatus according to claim 2, further comprising priority order setting means for setting a priority order for switching between the message generation method and a user's instruction. 4. A facsimile apparatus equipped with a communication means connectable to an ISDN network, wherein if the call setup is unsuccessful at the time of image transmission, the reoccurrence occurs according to the content of the reason display information element notified from the network. A facsimile apparatus comprising control means for changing a condition for making a call and making a call again.