JP3295548B2 - G3 protocol measurement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a G3 protocol measuring apparatus for measuring a communication protocol of a G3 facsimile to judge whether or not the communication protocol is appropriate, and more particularly to an apparatus for easily analyzing the cause of abnormality in communication protocol data.

[0002]

2. Description of the Related Art ITU recommendation T. A G3 protocol measuring apparatus is used to determine the suitability of a communication protocol of a facsimile apparatus conforming to the G.30 standard or a communication protocol independently performed by a manufacturer of each facsimile apparatus. The conventional G3 protocol measuring device has a monitor function capable of measuring the communication protocol of the facsimile device, monitors the communication protocol during transmission and reception by the facsimile device, and displays the result on a screen or a recording sheet. The analyzed result is analyzed by an analyzer to determine whether the communication protocol is appropriate.

[0003]

However, the monitored communication protocol data does not comply with ITU Recommendation T.30. It is not easy to analyze whether the values conform to the standard value specified in the standard 30 or the standard value specified for each facsimile machine maker. Needed a long time. In addition, the results of analysis of the monitored communication protocol may vary from analyst to analyst and may cause analysis failure, which may be one of the causes of communication failure.

Further, since it is not easy to reproduce the monitored result, it has been difficult to investigate the cause of the communication failure and to quickly take countermeasures when the communication failure occurs.

The present invention has been made in order to improve such disadvantages. A G3 protocol measuring apparatus capable of automatically analyzing a measured communication protocol and easily reproducing a measured result is provided. The purpose is to obtain.

[0006]

The G3 protocol measuring device according to the present invention has a monitor communication control unit, a control unit, and a simulator communication control unit.
U Recommendation T. The communication unit receives a communication protocol of a facsimile apparatus conforming to No. 30 and the control unit communicates the communication protocol data received by the monitor communication control unit with an ITU stored in advance.
Recommendation T. 30 and outputs an error message when the result of the comparison is different, and based on the monitored result, the communication protocol data of the facsimile apparatus that was performing the communication.シ ュ
The simulation data is converted to simulation data and sent to the simulation communication control unit. The simulation communication control unit is connected to the simulation data sent from the control unit, and is connected to a facsimile machine which is in communication with the facsimile machine. It is characterized by executing a communication protocol.

The monitor communication control section receives a communication protocol independently performed by a maker of each facsimile apparatus, and the control section stores the communication protocol data received by the monitor communication control section and each of the pre-stored communication protocol data. It is desirable to compare with a standard value defined for each manufacturer of the facsimile machine and output an error message when the comparison result is different.

[0008]

In the present invention, according to ITU Recommendation T. A monitor communication control unit receives a communication protocol of a facsimile apparatus conforming to No. 30 and a communication protocol independently performed by a manufacturer, and sends the received communication protocol to the control unit.
The control unit compares the transmitted communication protocol data with a standard value stored in advance, analyzes the suitability of the measured communication protocol, and displays the analysis result. Further, the control unit transmits the measured communication protocol data to simulation data.
Data and convert it to a simulated data by simulation data.
The communication communication control unit is operated to execute a communication protocol equivalent to that of the facsimile machine that was performing the communication, and reproduces the measured communication protocol.

[0009]

FIG. 1 is a block diagram showing a G3 protocol measuring apparatus according to an embodiment of the present invention. As shown in the figure, the G3 protocol measuring device includes a control unit 1, a data storage memory 2, a display unit 3, a monitor communication control unit 4, and a simulation device.
A communication control unit 5.

The control unit 1 has a CPU 11 for managing the entire apparatus.
, The memory 12, the arithmetic processing unit 13, and the ITU Recommendation T.
A function information table storage unit 14 storing various function information of a communication protocol conforming to H.30 and various function information of a different non-standard procedure communication protocol set for each manufacturer;
ITU Recommendation T. A protocol sequence table storage unit 15 for storing a communication protocol sequence conforming to No. 30 and a non-standard procedure communication protocol sequence set for each manufacturer, and a transmitting side (transmission) for executing a simulation. And a modem control table storage unit 16 for storing function information of a digital handshaking command of the digital handshake command (side or reception side).

The monitor communication control unit 4 includes a network control unit 41, a modem 42, a digital handshaking command flag monitoring unit 43, and a tonal signal detection unit 44, and receives a communication protocol of the facsimile apparatus 6. The simulator communication control unit 5 also has a network control unit 51, a modem 52, a digital handshaking command flag monitoring unit 53, and a tonal signal detection unit 54. Execute

The operation when the communication protocol of the facsimile apparatus 6 is measured by the G3 protocol measuring apparatus configured as described above will be described with reference to the flowchart of FIG.

First, when the monitor communication control unit 4 receives communication protocol data including image information data, the CPU 11 of the control unit 1 uses the low-speed modem (300 bps) of the modem 3 to transmit the communication protocol data.
It is confirmed whether or not the digital handshaking command NSF has been received (step S1). When NSF is detected, the NSF facsimile information field (FI
The manufacturer code is detected by the 17 to 28 bits of F) and set in the memory 12 (step S2). And NS
If there is a digital handshaking command NSS which is a response signal to F (step S3), the facsimile information field (FIF) of the NSS specified by the manufacturer based on the set manufacturer code. Is extracted from the function information table storage unit 14 (step S4). Thereafter, based on the extracted function information for each manufacturer, the modem mode is controlled by the unique communication protocol sequence defined by the manufacturer, and the communication protocol data is measured. It is stored in the memory 12 (step S5).

In the communication protocol data to be measured, a digital handshaking command D is provided after the NSS.
If there is no CS, the measurement of the communication protocol data is repeated again (steps S7 and S11). If there is DCS next to the NSS in the communication protocol data being measured (step S7), the setup data is reset (step S8) and the ITU recommendation T.30 is performed. Then, the function information table specified in 30 is extracted from the function information table storage unit 14 (step S9). The modem mode of the modem 42 of the monitor communication control unit 4 is switched according to the extracted function information table, and the communication protocol data is measured and stored in the memory 12 (step S10). Also, if NSF is not detected from the received communication protocol data,
S is detected (step S6), and if DCS is subsequently detected (step S7), the ITU recommendation T.S. Then, the function information table defined by the step 30 is extracted, and the communication protocol data is measured in the same manner as described above (steps S9 and S1).
0).

The CPU 11 repeats the above processing, and when the measurement of the communication protocol data is completed (step S11),
The measurement data stored in the memory 12 is stored in the data storage memory 2.
(Step S12). Then, when automatically judging the suitability of the measured communication protocol data, an automatic judgment process is executed (steps S13 and S1).
4).

Next, the operation for automatically judging the suitability of the communication protocol data measured as described above will be described with reference to the flowchart of FIG.

When an operation for automatically judging the applicability of communication protocol data is started, the CPU 11 of the control unit 1 extracts communication protocol measurement data stored in the data storage memory 2 and stores it in the memory 12. (Step S21). The arithmetic processing unit 13 of the control unit 1 confirms the NSF from the communication protocol measurement data stored in the memory 12 (step S2).
2) NSF facsimile information field (FIF)
The maker code is detected and set based on the 17th to 28th bits (step S23). When the NSS which is a response signal to the NSF is detected (step S24), the non-standard procedure communication (original communication) protocol sequence defined by the manufacturer is controlled based on the detected manufacturer code. Unit 1 protocol sequence table storage unit 1
5 (step S25). The extracted nonstandard procedure communication protocol sequence is compared with the measurement data of the communication protocol (step S30). As a result of the comparison, if the measurement data of the communication protocol is different from the non-standard procedure communication protocol sequence defined by the manufacturer, an error message is generated and displayed on the display unit 3. (Step S32). As a result of comparison, if the measurement data of the communication protocol is the same as the non-standard procedure communication protocol sequence defined by the manufacturer, a normal message is generated and displayed on the display unit 3. .

The arithmetic processing unit 13 reads D from the communication protocol measurement data stored in the memory 12 next to the NSS.
When CS is detected (step S27), the set mail
Reset the code to ITU recommendation T. The protocol sequence defined by 30 is extracted from the protocol sequence table storage unit 15 of the control unit 1 (steps S28 and S29). This extracted ITU recommendation T. 30
Is compared with the measurement data of the communication protocol, and the measurement data of the communication protocol is determined by ITU Recommendation T.30. If the protocol sequence is different from the protocol sequence defined by S30, an error message is generated and displayed on the display unit 3 (steps S30 and S3).
1, S32). Also, as a result of the comparison, the measurement data of the communication protocol was found to be in accordance with ITU Recommendation T.30. If the message is the same as the protocol sequence defined in
Message is generated and displayed on the display unit 3 (step S33).

Further, from the measurement data of the communication protocol, N
When the DIS is detected without detecting the SF (step S26) and subsequently the DCS is detected (step S27), the measurement data of the communication protocol and the ITU recommendation T.30 are used in the same manner as described above.
Compare the protocol sequence defined by 30.

After the above-described automatic determination processing is completed, the CPU 11 converts communication protocol data measured subsequently into simulation data and executes communication program data equivalent to that of the facsimile apparatus 6 which has been communicating. If so, a simulation process is executed (steps S34 and S35).

Next, the operation for executing the simulation processing will be described with reference to the flowchart of FIG.

When the simulation process starts, the control unit 1
CPU 11 extracts the communication protocol measurement data stored in data storage memory 2 and stores it in memory 12 (step S41). The arithmetic processing unit 13 of the control unit 1 obtains NS based on the communication protocol measurement data stored in the memory 12.
When F is confirmed (step S42), the maker code is detected and set based on 17 to 28 bits of the facsimile information field (FIF) of the NSF (step S4).
3). When the NSS which is a response signal to the NSF is detected (step S44), the non-standard procedure communication (original communication) protocol sequence defined by the manufacturer is controlled based on the detected manufacturer code. It is extracted from the protocol sequence table storage unit 15 of the unit 1 (step S45). Next, based on the non-standard procedural communication protocol sequence defined by the manufacturer extracting the digital handshaking command of the measurement data of the communication protocol, the command is sequentially converted to the transmission side command and the reception side command. Separate (step S50). Then, the function information of the digital handshaking command on the transmitting side (transmitting side or receiving side) for executing the simulation is extracted, and the modem 52 of the simulator communication control unit 5 is controlled from this function information. The modem control information for transmitting or receiving high speed data is extracted and
It is set in the modem control table storage unit 16 as option data (step S51). After the separation of all the digital handshaking commands and the extraction of the modem control information from the measurement data of the communication protocol, the CPU 11 stores the modem control table storage unit 1.
The simulation data set to 6
To the data communication control unit 5. Simulator communication control unit 5
Executes a simulation by connecting a line based on the received simulation data (steps S52 and S52).
53).

Further, the arithmetic processing unit 13 reads D from the measured data of the communication protocol stored in the memory 12 after the NSS.
If CS is detected (step S47), the set mail
Reset the code to ITU recommendation T. The protocol sequence defined by 30 is extracted from the protocol sequence table storage unit 15 of the control unit 1 (steps S48 and S49). Next, ITU recommendation T.1 which extracted the digital handshaking command of the measurement data of the communication protocol. The command is sequentially separated into a command on the transmitting side and a command on the receiving side based on the protocol sequence defined by the step 30 (step S50). The sending side (sending side or receiving side) that executes the simulation
Function information of the digital handshake command, and modem control information for transmitting or receiving high-speed data by controlling the modem 52 of the simulator communication control unit 5 from the function information. Is extracted and set in the modem control table storage 16 as simulation data (step S51). After the separation of all digital handshaking commands from the measurement data of the communication protocol and the extraction of the modem control information are completed, the CPU 11 sets the simulation data set in the modem control table storage 16. The data is transferred to the simulator communication control unit 5. The simulation communication control section 5 executes a simulation by connecting a line based on the received simulation data (step S52,
S53). Also, NS data can be obtained from communication protocol measurement data.
F is detected (step S46), and if DCS is subsequently detected (step S47), the ITU Recommendation T.F. The simulation data is extracted based on the protocol sequence defined by (30).

[0024]

According to the present invention, as described above, the ITU
Recommendation T. The monitor communication control unit receives the communication protocol of the facsimile apparatus conforming to No. 30 and the communication protocol unique to the manufacturer, and compares the received communication protocol data with the standard value stored in advance to measure. Since the appropriateness of the determined communication protocol is determined and the determined result is displayed, it is possible to quickly know whether or not the measured communication protocol has a problem.

Further, since the suitability of the measured communication protocol is automatically determined, even a person who does not have specialized knowledge can accurately and completely analyze the communication protocol, and the analysis variation of each analyst. Can be prevented from occurring.

Further, the measured communication protocol data is converted into simulation data, a communication protocol equivalent to that of the facsimile machine which has been communicating with the simulation data is executed, and the measured communication protocol is reproduced. Therefore, the cause of the communication failure can be accurately known, and the countermeasure can be easily taken.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a G3 protocol measurement device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a communication protocol measurement operation of the embodiment.

FIG. 3 is a flowchart showing an automatic judgment operation of the embodiment.
It is.

FIG. 4 is a flowchart showing a simulation operation of the embodiment.

[Explanation of symbols]

 Reference Signs List 1 control unit 2 data storage memory 3 display unit 4 monitor communication control unit 5 simulator communication control unit 11 CPU 12 memory 13 arithmetic processing unit 14 function information table storage unit 15 protocol sequence table storage unit 16 Modem control table storage

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 1 / 00,1 / 32

Claims (2)

(57) [Claims] 1. A monitor communication control unit, a control unit, and a sumire
And a monitor communication control unit. The communication unit receives a communication protocol of a facsimile apparatus conforming to ITU-T Recommendation T.30 based on the communication protocol data received by the monitor communication control unit. 30 and outputs an error message when the result of the comparison is different, and based on the monitored result, the communication protocol data of the facsimile apparatus that was performing the communication. Is converted into simulation data and sent to a simulation communication control unit. The simulation communication control unit closes a line based on the simulation data sent from the control unit and performs communication. A G3 protocol measuring device, which executes a communication protocol equivalent to that of the G3 protocol. 2. The G3 protocol measuring apparatus according to claim 1, wherein the monitor communication control unit receives a communication protocol independently performed by a maker of each facsimile apparatus, and the control unit receives the communication protocol by the monitor communication control unit. Communication protocol data
Data is compared with a standard value which is stored in advance for each facsimile machine manufacturer, and when the comparison result is different, an error message is output, and based on the monitored result, the communication is performed. The communication protocol data of the facsimile apparatus performing the above is converted into simulation data and sent to the simulation communication control unit, and the simulation communication control unit transmits the simulation data sent from the control unit.
A G3 protocol measuring device, wherein a line is concluded by means of data and a communication protocol equivalent to that of the facsimile device performing the communication is executed.