JPH10190774A - Protocol analyzer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protocol analyzer which continuously executes the bit error test of data of plural terminal equipments to be tested almost without the need of the operation of a tester. SOLUTION: When the control channel control part 5 of the protocol analyzer 3 receives an incoming call request message from the prescribed terminal equipment to be tested among the plural terminal equipments to be tested 2a-2n through the control channel 4 of a communication line 1, an automatic control part 7 sets a call to the control channel 4 and the test of the bit error of data transmitted from the terminal equipment to be tested through the data channel 10 of the communication line 1 is conducted for the bit error test control part 9 of a data channel control part 8 from the automatic control part 7. The test situation of the bit error test control part 9 is always monitored in a state monitoring part 11. When the test terminates, a test result is stored in a file and the automatic control part 7 cuts the setting of the call of the control channel 4 and the incoming call request message of the next terminal equipment to be tested is waited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protocol analyzer for analyzing a protocol on a communication line.
In particular, a plurality of terminal devices under test are connected to a communication line, and a call setting, a call disconnection, and a bit error test of a data channel control unit are performed by an automatic control unit of a control channel control unit connected to a control channel of the communication line. A protocol analyzer that controls the control unit to start testing for bit errors in the data channel of the communication line, monitors the bit error test status with the status monitoring unit, and saves the test results to a file. About.

[0002]

2. Description of the Related Art Conventionally, a plurality of terminal devices under test are connected to a protocol analyzer via a communication line, control information is transmitted to a control channel of the communication line, and data and data of the communication line are transmitted.
FIG. 2 shows a case where data is transmitted to a channel and a test for a bit error of the data is performed.

In FIG. 2, a plurality of terminal devices under test 22 are connected via a switch B and a communication line 21 in an ISDN line network A.
a to 22n and the protocol analyzer 23 are connected. The data channel 24 of the communication line 21 (ISDN
Protocol analyzer 2)
3 data channel control units 25 are connected. The data channel control unit 25 includes the data channel 24
Is provided with a bit error test control unit 26 for testing a bit error of data to be transmitted.

The control channel 27 of the communication line 21
The control channel control unit 28 of the protocol analyzer 23 is connected to (corresponding to the D channel of ISDN).
The control channel control unit 28 includes a call control program 29. The call control program 29 is a program for performing a call setting and a call disconnection on the control channel 27.

The control channel control unit 28 controls the control channel 2
After confirming the completion of the call setting for the data channel 7, the bit error test control unit 26 of the data channel control unit 25 starts the test of the bit error of the data on the data channel 24. At the end of the bit error test, the result of the test is visually checked by the user.

Next, the operation of the protocol analyzer of FIG. 2 will be described with reference to the flowchart of FIG. First, on the data channel 24 of the communication line 21,
When a test is performed to determine whether there is a bit error in data transmitted from a predetermined terminal device among the terminal devices under test 22a to 22n to the data channel control unit 25 of the protocol analyzer 23, Test terminal device 2
2a to 22n from a predetermined terminal device under test
A call setting request message is transmitted to the protocol analyzer 23 through the exchange B in the N-line network A and the control channel 27 of the communication line 21.

In step S1, the control channel control unit 28
Starts the call control program 29 upon receiving the call setting request message. Based on the call setting request message, the call control program 29 sets a call to the control channel 27 in step S2, and when the tester confirms that the call setting is completed, the tester operates in step S3. The control channel control unit 28 outputs a bit error test start command to the bit error test control unit 26 of the data channel control unit 25.

Thus, the bit error test control unit 2
6 starts a bit error test on data loaded on the data channel 24 of the communication line 21 from the terminal devices under test 22a to 22n via the exchange B in the ISDN network A.

In step S4, when the tester confirms that the bit error test on the data channel 24 by the bit error test controller 26 has been completed, the process proceeds to step S4.
In step 5, the result of the bit error test is confirmed. After the confirmation, the tester performs a call disconnection operation on the control channel 27 in step S6. That is, the control channel control unit 28 disconnects the call on the control channel 27. Next, in step S7, the result of the bit error test is stored in a file (not shown) by the tester's operation.

Here, if the tester determines in step S8 whether or not to continue the bit error test on the data channel 24 again and does not end the test,
That is, when testing for the presence or absence of a bit error in the transmission data by the other terminal devices under test among the terminal devices under test 22a to 22n, the process returns to step S2.

Also, as a result of the determination in step S8,
To terminate the bit error test, the call control program is executed in step S9, that is, the process for the bit error test is terminated.

[0012]

The conventional protocol analyzer performs an error test on data bits of data transmitted from the terminal device under test to the data channel 24 as shown in FIG. S3 bit
Error test start processing, bit error test result storage processing in step S7, control channel 27 in step S6
The call disconnection processing and the like set in are performed by the tester. Further, the confirmation of the termination of the call setting in step S2 and the confirmation of the termination of the bit error test in step S4 are the confirmation operations of the tester.

Further, a plurality of terminal devices under test 22a-2
In the bit error test of the data bits transmitted from 2n to the data channel 24, after the test of one terminal device is completed, the tester must also perform the switching operation to the next terminal device under test. . In addition, there is a problem in that an operation error occurs to confirm the operation by the tester and a test result may not be saved in a file.

As described above, in order to perform a bit error test, a tester must constantly monitor or operate, and the progress of labor saving such as automation and unmanned operation is delayed. It is a fact.

According to the present invention, almost no tester's operation or confirmation work is required when a bit error of a data bit on a data channel is tested, and the number of data bits on a data channel of a plurality of terminal devices under test is reduced. It is an object of the present invention to provide a protocol analyzer that automatically performs a bit error test and performs the test in a short time, and that reliably saves a test result in a file.

[0016]

In order to achieve this object, a protocol analyzer of the present invention comprises a data analyzer connected to a data channel 10 of a communication line 1 to which a plurality of terminal devices under test 2a to 2n are connected. A bit error test control unit 9 provided in the channel control unit 8 for performing test control of a bit error of data transmitted to the data channel 10, and a control channel control unit connected to the control channel 4 of the communication line 1 5, the control channel control unit 5 performs call setting when receiving a call setting request message transmitted from the terminal devices under test 2 a to 2 n to the control channel control unit 5, and performs bit setting by the bit error test control unit 9. A call control program 6 including a program for disconnecting the control channel 4 after the error test is completed; Performs control of call setup and call disconnect on the control program 7, bit after call setup to the control channel 4 for the bit error test controller 9
The automatic control unit 7 that issues an error test start request, monitors the execution and stop of the bit error test by the bit error test control unit 9, notifies the automatic control unit 7 of the test state, and outputs the bit error test result. Status monitoring unit 1 to save to file
1 is provided.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a protocol according to the present invention will be described.
One embodiment of the analyzer will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of this embodiment. In FIG. 1, a plurality of terminal devices under test 2a to 2n and a protocol analyzer 3 are connected via an exchange B in an ISDN network A and a communication line 1.

The control channel controller 5 of the protocol analyzer 3 is connected to the control channel 4 of the communication line 1 (corresponding to the D channel of ISDN), and is connected to the exchange B in the ISDN network A and the control channel 4 of the communication line 1. The call request messages from the terminal devices under test 2a to 2n are transmitted to the control channel control unit 5.

The control channel control unit 5 is provided with a call control program 6. The call control program 6 transmits an incoming call request message from the terminal devices under test 2a to 2n to the control channel control unit 5 through the control channel 4. If
A call is set for the control channel 4 and the set call is disconnected.

This call setting and disconnection control are performed by the automatic control unit 7 of the control channel control unit 5. When the call for the control channel 4 is set, the automatic control unit 7 sends the data of the protocol analyzer 3 A bit error test start request command is output to the bit error test controller 9 of the channel controller 8.

Further, the automatic control unit 7 has a function of rejecting a second incoming call request message from the terminal under test when a call for the control channel 4 is set, and a function of transmitting the incoming call request message during transmission of the incoming call request message. It also has the function of recording the calling number.

When the automatic control unit 7 receives the notification of the end of the bit error test from the state monitoring unit 11 described later, the automatic control unit 7 disconnects the call by the call control program 6 and the next call from the terminal under test is sent. Incoming call request message is control channel 4
It has a function of waiting for transmission through the network.

On the other hand, the data channel control unit 8 is connected to a data channel (corresponding to an ISDN B channel) 10 of the communication line 1, and is transmitted to the data channel control unit 8 through the data channel 10. 2a-2n
Is transmitted from the device. The bit error test control unit 9 controls the start of the bit error test, the stop of the bit error test, the test items, the test results, and the like. The status monitor 11 monitors the test status of the bit error test by the bit error test controller 9.

The state monitoring unit 11 has a function of notifying the test condition, notifying the automatic control unit 7 of a change in the test condition, and a function of storing the test result in a file (not shown). In this file, in addition to the presence or absence of an error in the bit error test result, the calling number of the call request message from the terminal under test, the bit error test start time, etc. are included in the file name of the test result. Can be saved.

Next, the operation of this embodiment will be described. First, an incoming call request message is sent from a predetermined terminal device among the plurality of terminal devices under test 2a to 2n through the exchange B in the ISDN network A and the control channel 4 of the communication line 1 to the control channel of the protocol analyzer 3. When transmitted to the control unit 5, the automatic control unit 7 activates the call control program 6 to set up a call for the control channel 4.

At this time, an incoming call request message is transmitted,
The automatic control unit 7 records the calling number of the terminal under test which has issued the call request message received by the automatic control unit 7, and the second call request message is transmitted from another terminal under test. However, during the reception of the first call request message, the reception of the second call request message is rejected.

After confirming the call setting of the control channel 4 by the call control program 6 for the first incoming call request message, the automatic control unit 7 sends a bit error test control unit 9 of the data channel control unit 8 to the bit error test control unit 9.・ Issues an error test start request.

As a result, the test of the bit error of the data transmitted to the data channel 10 of the communication line 1 from the terminal device under test that transmitted the first call request message is started. In this case, the bit error test control unit 9
Starts a test according to a test item set in advance by a user, executes the test for an arbitrary time, and automatically ends the test.

The state monitoring unit 11 monitors the bit error test status by the bit error test control unit 9, that is, the start and stop status of the test, and notifies the automatic control unit 7 of the monitoring status. When the bit error test is completed by the bit error test control unit 9, the state monitoring unit 11 stores the test result in a file. This storage allows the data to be analyzed later.

The contents to be stored in this file include the presence / absence of a bit error, the calling number of the incoming message from the terminal under test, the test start time, and the like.
Therefore, the subsequent data analysis processing is also facilitated.

Next, when the bit error test is completed, the state monitoring unit 11 notifies the automatic control unit 7 of the test end. The automatic control unit 7 instructs the call control program 6 to disconnect the call of the control channel 4. And then the automatic control unit 7
Is in a standby state for a call request message from the next terminal device under test among the terminal devices under test 2a to 2n.

In the present invention, the automatic control unit 7 registers a plurality of terminal devices under test 2a to 2n, makes a call from the protocol analyzer 3, performs call control on the control channel 4, and performs call control. After the setting, the exchanges B in the ISDN network are sequentially transmitted to the plurality of terminal devices under test 2a to 2n.
A call request is automatically made through the control channel 4 of the communication line 1 and the bit error test of the data in the data channel 10 transmitted from the terminal device under test receiving the call request is performed by the automatic control unit 7. A test start command is issued to the bit error test control unit 9 to sequentially and sequentially transmit data from the plurality of terminal devices under test 2a to 2n via the exchange B in the ISDN network A and the data channel 10 of the communication line 1. A bit error test can be performed.

[0033]

According to the protocol analyzer of the present invention, when an incoming call request message is received from the terminal device under test through the control channel of the communication line to the control channel control unit of the protocol analyzer, the automatic control unit is activated. The control program makes a call setting for the control channel, and after this call setting, the bit error test control unit of the data channel control unit receives the data transmitted from the terminal device under test through the data channel of the communication line. A bit error test is performed, the status of this test is monitored by the status monitoring device, and information such as the monitoring result is saved in a file by the status monitoring device. The bit error test of the data of a plurality of terminal test apparatuses can be continuously performed.

Therefore, the bit error test can be executed without taking much time, the test error can be eliminated, the data is not left in the file, and the bit error test is saved in the file. The analysis processing of the obtained data is also facilitated.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a protocol analyzer according to the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional protocol analyzer.

FIG. 3 is a flowchart for explaining the operation of the protocol analyzer of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Communication line 2a-2n Terminal device under test 3 Protocol analyzer 4 Control channel 5 Control channel control unit 6 Call control program 7 Automatic control unit 8 Data channel control unit 9 Bit error test control unit 10 Data channel 11 State monitoring Part A ISDN network B Switch

Claims (3)

[Claims] A data channel control unit (8) connected to a data channel (10) of a communication line (1) connecting a plurality of terminal devices under test (2a) to (2n), A bit error test control unit (9) for performing test control of bit errors of data transmitted to the channel (10); and a control channel control unit connected to the control channel (4) of the communication line (1). (5), the terminal device under test (2
a) setting a call upon receipt of a call setup request message transmitted from a) to (2n) to the control channel controller (5), and after the bit error test is completed by the bit error test controller (9), A call control program (6) including a program for disconnecting a call on a control channel (4); and a call control program (7) provided in the control channel control unit (5), the call setting and call disconnection for the call control program (7). An automatic control unit (7) for performing control and requesting a start of a bit error test to the bit error test control unit (9) after setting up a call to the control channel (4); The execution and stop of the bit error test of the control unit (9) are monitored and the bit error test control unit (9) is controlled by the automatic control unit (7).
A protocol analyzer, comprising: a status monitor (11) for notifying an error test status and storing the bit error test result in a file. 2. The protocol analyzer according to claim 1, wherein the automatic control unit (7) includes the plurality of terminal devices under test (2a).
To (2n) is registered in advance as a test target, and a call process is performed on at least one of the terminal devices under test among the plurality of terminal devices under test (2a) to (2n), and Call control for the control channel (4) is performed, and after setting up the call, the bit error test control unit (9) performs a bit error test on the data transmitted on the data channel (10). Protocol analyzer. 3. The protocol analyzer according to claim 1, wherein said state monitoring unit comprises: said bit error test control unit.
A protocol analyzer which automatically saves a test result in the file for each bit error test of data transmitted to the data channel (10) executed in (9).