JPH04322557A - Communication method for facsimile equipment - Google Patents

Abstract

PURPOSE:To implement domestic transmission and oversea transmission with a proper communication parameter at all times by the facsimile equipment. CONSTITUTION:A communication procedure task 2 receiving a call request from an automatic call task 1 recognizes a dial number of a destination. Babe on the recognized dial number, a communication parameter at transmission is set automatically to that for either domestic transmission or oversea transmission and a picture data is sent.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a communication method in a facsimile machine having an automatic calling function.
This article relates to a method for setting communication parameters.

0002

[Prior art] When communicating by facsimile,
It is necessary for a maintenance person to initialize various communication parameters in advance, depending on the situation in which the device is used. Figure 3 shows
FIG. 2 is an explanatory diagram showing communication procedures for domestic communication and overseas communication, and shows differences in communication procedures due to differences in settings of various communication parameters.

[0003]The following communication parameters (a) to (d) need to be changed depending on whether communication is to be carried out overseas or only within the country.
) is reported by CCITT Recommendation T-30.

(a) First digital identification signal (DI
(b) Setting the interval between the called station identification signal (CED signal) and the DIS signal (c) Turning on/off the echo suppressor protect tone (d) Waiting for the phase B procedure to start Timer time settings The above communication parameters (a) to (c) are settings for suppressing the influence of echoes that occur during communication with overseas countries. The first setting to ignore the DIS signal is turned on for overseas communications and turned off for domestic communications. Also, CED signal and DIS
The interval with the signal is set as long as 1.5 sec for overseas communication, and as short as 75 msec for domestic communication. Furthermore, the echo suppressor protect tone setting is turned on for overseas communications and turned off for domestic communications.

[0005] Furthermore, the above communication parameter (d) is a setting to prevent the line from being disconnected due to timeout when it takes a long time to connect to an overseas exchange. The phase B procedure start wait timer time is 9 for overseas communications.
Set it as long as 0 sec, and set it as short as 40 sec for domestic communication.

[0006]

[Problem to be Solved by the Invention] However, with the conventional method of setting communication parameters, there is no problem when the facsimile is used exclusively for either domestic communication or overseas communication, but when it is set for overseas communication, However, in the case of domestic communication, there is a problem that the communication time becomes long because the interval between the CED signal and the DIS signal is long.

[0007] On the other hand, when communicating overseas after setting domestic communication, it is not possible to suppress the effect of echo, and there is also the problem that the line may be disconnected if it takes a long time to connect to the exchange. was there.

[0008] Furthermore, these communication parameters are not recognized by the user, and it is difficult for the user to change them each time transmission is made.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its purpose is to provide a communication method for a facsimile machine that can always perform domestic and overseas transmissions with appropriate communication parameters. It is about providing.

0010

[Means for Solving the Problems] A communication method in a facsimile device according to the present invention is an automatic caller that, by specifying a calling destination, calls a pre-registered dial number of the calling destination and transmits image data. A facsimile machine having a calling function and a function of switching communication parameters at the time of transmission to either domestic transmission or overseas transmission, recognizes the dial number of the calling destination, and based on this recognized dial number, The feature is that the communication parameters at the time of transmission are automatically switched to either domestic transmission or overseas transmission, and image data is transmitted.

[0011]

[Operation] In the present invention, the dial number of the called party is recognized, and based on the recognized dial number, the communication parameters at the time of transmission are automatically switched to either domestic transmission or overseas transmission, Since image data is transmitted, image data is always transmitted using appropriate communication parameters.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of a facsimile machine for implementing a communication method according to the present invention. Also, Figure 2
1 is a flowchart illustrating an embodiment of a communication method according to the present invention.

The communication method in the facsimile machine of this embodiment is applied only to a facsimile machine having an automatic calling function. Here, the automatic call function means, for example, by simply specifying the destination, such as by pressing a speed dial button, a pre-registered dial number of the destination is called, and the dial number of the destination is called. This function automatically connects the communication line to the called station and sends data.

Further, the communication method in the facsimile apparatus of this embodiment can be applied only to a facsimile apparatus having a function of switching communication parameters at the time of transmission to either domestic transmission or overseas transmission. Here, the communication parameters to be switched include those shown in (a) to (d) listed in the above-mentioned conventional technology (reported by CCITT Recommendation, T-30).

In the communication method in the facsimile machine of this embodiment, when the facsimile machine is activated, as shown in FIG. 1, an autocall task 1 issues a call request to the communication procedure task 2. At this time, the call request includes the dial number of the call destination.

Next, the communication procedure task 2 receives this call request and sends the image data according to the protocol. Here, the image data is sent out according to the algorithm shown in FIG.

As shown in FIG. 2, manual transmission (
For example, dial manually, confirm the phone line connection with a beep, and press the send button. ), the determination in step 1 is NO, and the communication parameters that have already been set are transmitted as they are (step 5).

[0018] In addition, in the case of an automatic call, the judgment in step 1 is YES, and the dial number included in the call request is recognized and the number is prefixed with, for example, an outside line "001" or an extension "001". #001" (Step 2)
), the communication parameters are set for overseas communication (step 3), and when there are no communication parameters, the communication parameters are set for domestic communication (step 4).

As explained above, in this embodiment, the dial number of the called party is recognized, and based on this recognized dial number, the communication parameters at the time of transmission are set for either domestic transmission or overseas transmission. Since the image data is automatically switched and the image data is transmitted, the transmission is always performed with appropriate communication parameters. Therefore, it is possible to prevent communication time from becoming longer than necessary in domestic communication, and to prevent an increase in the influence of echoes and disconnection of lines in overseas communication.

[0020]

[Effects of the Invention] As explained above, in the present invention, transmission is always performed with appropriate communication parameters, so that communication time is not longer than necessary in domestic communication, and the influence of echo is reduced in overseas communication. This can prevent the number of connections from increasing or disconnecting the line.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a facsimile device for implementing a communication method according to the present invention.

FIG. 2 is a flowchart showing an embodiment of the communication method according to the present invention.

FIG. 3 is an explanatory diagram showing communication procedures for domestic communication and overseas communication.

[Explanation of symbols]

1. Call task 2 Communication procedure task

Claims (1)

[Claims] Claim 1: An automatic call function that calls a pre-registered dial number and sends image data by specifying a call destination, and a communication parameter that can be set for domestic or international transmission. A facsimile machine that has a function to switch to either one for sending or sending a call recognizes the dial number of the called party and, based on this recognized dial number, changes communication parameters at the time of sending to either domestic or overseas sending. 1. A communication method in a facsimile device characterized by automatically switching between two modes and transmitting image data.