JPS6257359A - Facsimile correspondence simulating system - Google Patents

Abstract

PURPOSE:To conduct simply and easily the simulation test of facsimile corresponding while a facsimile command is replaced by sending the facsimile command to a facsimile equipment to be tested via a channel according to the inputted facsimile correspondence procedure and comparing the reply command from the tested facsimile equipment to the signal with the correspondence procedure inputted in advance from a terminal device. CONSTITUTION:A data inputted from a terminal device 7 is given to a modulator control circuit 3, a modulator 4 and a telephone line 10 according to the command of a central arithmetic processing section 1 and facsimile commands CED, DIS, CSI and NSF are sent sequentially to a facsimile equipment to be tested being the sender side. The facsimile equipment to be tested receiving the said series of commands sends a reply command corresponding to said commands to the telephone line 10 and the reply command is fetched to the central arithmetic processing section 1 via a demodulator 9 and a demodulator control circuit 8. The central operation processing section 1 compares the reply command with the facsimile correspondence procedure inputted in advance from the terminal device 7.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a facsimile communication simulation method for evaluating communication procedures required between facsimile devices during facsimile communication, and particularly relates to a facsimile communication simulation method for evaluating communication procedures required between facsimile devices during facsimile communication, and in particular, A facsimile communication simulation method % formula % for testing communication procedures as a combination of combinations quickly and with good accuracy. The one shown in the publication is known. In this case, communication signals between two normal facsimile machines are stored in advance, and the facsimile machine under test is tested using this stored data.

However, in this case, no consideration is given to rearranging facsimile commands or changing data within the commands.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a facsimile communication simulation method that can quickly and accurately test communication procedures between facsimile apparatuses by taking into account rearrangement of facsimile commands and changes in data within commands.

[Summary of the invention]

For this purpose, the present invention transmits a facsimile command to the facsimile device under test via a communication path according to an arbitrarily created communication procedure, and at the same time sends a response command from the facsimile device under test to the command using a communication procedure created in advance. The communication procedure of the facsimile device under test is evaluated by comparing it with the procedure.

The facsimile device under test operates not only as a receiver but also as a transmitter, and the communication procedure is evaluated in both cases.

[Embodiments of the invention]

The present invention will be explained below with reference to FIGS. 1 to 3.

First, a facsimile communication simulation apparatus according to the present invention will be explained. FIG. 1 shows the configuration of an example thereof. According to this, the central processing unit 1, which controls the entire device, includes a memory circuit 21, peripheral parts (printer and display) 5, and a terminal device (keyboard).
7 is accommodated, and the modulators 4 . A demodulator 9 is accommodated therein.

In this case, the memory circuit 2 stores a control program for controlling the device itself and facsimile commands input from the terminal 7, and the peripheral section 5 stores data etc. in the memory circuit 2 according to instructions from the central processing section 1. It is to be displayed by. Furthermore, control data such as modulation speed and modulation method is sent to the modulator 4 having the A/D conversion function from the central processing unit 1 via the modulator control circuit 3. Control data such as the demodulation speed and demodulation method are given to the demodulator control circuit 8 from the central processing unit 1 through the demodulator control circuit 8. The modulated facsimile command from the modulator 4 is transmitted to the facsimile device under test via the telephone line 6, and the facsimile command received from the facsimile device under test via the demodulator 9 is transmitted to the demodulator control circuit 8. The signal is supplied to the central processing unit 1 via the central processing unit 1.

FIG. 2 shows a general sequence of facsimile communication procedures. According to this, facsimile communication starts after the receiving side transmits the non-voice terminal display signal CED, and when the facsimile communication ends and the receiving side sends the message confirmation signal MCF, the sending side sends the line disconnection signal DCN. The line is expected to be restored. Now.

Facsimile communication normally begins with a digital identification signal DIS sent from the receiving side and ends with a procedure end signal EOP sent from the sending side. When the sending timing, signal length, and even facsimile commands are changed and sent to the facsimile device under test, what kind of response command is received from the facsimile device under test is checked. Here, a brief explanation of the other signals in FIG. 2 is as follows.

C8I; called station identification signal NSF; non-standard equipment signal TSI; transmitting station identification signal NSS; non-standard equipment setting signal TCF; training check signal CFR; reception preparation confirmation signal RTC: control return code P; pre-training signal T: training Signal Now, FIG. 3 shows the procedure for conducting a facsimile communication simulation test using the facsimile communication simulation apparatus configured as shown in FIG. below,
Referring to FIGS. 1 and 2, the facsimile communication simulation test procedure will be explained according to FIG. 3 assuming that the facsimile communication simulator is on the receiving side. However, the central processing unit 1 converts these input data into communication procedures, stores them in the memory circuit 2 in time series, and then sends them out as facsimile commands. For example, if the data input from the terminal device 7 is a facsimile communication procedure as shown in FIG.
CED, DIS, CSI, N
SF facsimile commands are sent out sequentially. The facsimile under test that has received this series of commands sends response commands corresponding to these commands onto the telephone line IO, and these response commands are sent to the demodulator 9. The signal is taken into the central processing unit 1 via the demodulator control circuit 8. The central processing unit 1 compares this response command with the facsimile communication procedure inputted in advance from the terminal 7, and if they match, the next command is transmitted. If they do not match, the commands and the like up to the time when they match are displayed on the peripheral section 5, and the test ends.

〔Effect of the invention〕

As described above, according to the present invention, a facsimile command is sent to the facsimile under test via a communication path according to a facsimile communication procedure arbitrarily input from the terminal, and a response command from the facsimile under test in response to this signal is sent to the terminal. Since the communication procedure is compared with the communication procedure inputted in advance, facsimile communication simulation tests, which were previously impossible to perform, can be easily performed as facsimile commands can be replaced.

Moreover, it has the effect of being carried out quickly.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of an example of a facsimile communication simulation device according to the present invention, FIG. 2 is a diagram showing a general sequence of facsimile communication procedures, and FIG. 3 is a facsimile communication simulation test. It is a figure which shows the flow in an example when performing. 1... Central processing unit, 2... Memory circuit, 3...
- Modulator control circuit, 4... Modulator, 5... Peripheral section,
7... Terminal device, 8... Demodulator control circuit, 9... Demodulator.

Claims (1)

[Claims] Send facsimile commands to the facsimile device under test via a communication path according to a communication procedure that is arbitrarily created by making the contents of facsimile commands, the sending timing and signal length of the commands variable, and also taking into consideration the replacement of facsimile commands. On the other hand, a facsimile communication simulation method characterized in that the communication procedure of the facsimile device under test is evaluated by comparing a response command from the facsimile device under test to the command with a communication procedure created in advance.