JPH098909A - Test equipment for network - Google Patents

Abstract

PURPOSE: To obtain test equipment for a network by which the morality of a channel and the channel quality are confirmed through a channel confirmation test and a fault location is automatically identified when the channel test is failed. CONSTITUTION: An exchange 1 is provided with a test execution section 3 provides an instruction of speech channel control according to a test instruction and informs the result of test to a test instruction destination, a speech channel control section 5 executing call transmission to set up a channel by a dialing according to the content of an instruction of the speech channel control, a tone transmitter 6 sending a tone of a prescribed level at the line connection by the speech channel control section and a computer 8 controlling the speech test is provided with a test instruction section 13 sending a test instruction to the exchange according to a test condition represented by the received instruction, a telephone terminal interface section 16 acting like a telephone terminal in line connection via the exchange, and with a tone detection section 18 detecting a tone sent from the exchange via the telephone terminal interface section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test device for a network which is connected to a line through an exchange, and more particularly, it verifies the normality of a call path in a network by a call test and isolates a faulty part. For network test equipment for.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a line connection test system between a private branch exchange and another exchange disclosed in, for example, Japanese Patent Laid-Open No. 6-311230. In FIG. 3, the private branch exchange 1 receives and analyzes an instruction from the maintenance console 22 of the private branch exchange 1, sends an output signal, and instructs the display unit 21 provided in the maintenance console 22 to display a test result. Maintenance console control unit 20
A test execution unit 3 that receives an output signal from the maintenance console control unit 20 to create a test execution signal; and an output signal from the test execution unit 3 that receives an MDF (Main Distrib).
a routing frame (main wiring board) 23 and a trunk 7 for sending a line activation signal to a subscriber line exchange 24 connected through
After the signal is sent from the trunk 7, there is provided a DT signal reception monitoring section 19 for monitoring the reception of a DT (Dial Tone) signal as a response signal from the subscriber line exchange 24.

Next, the operation of the above configuration will be described. The instruction from the maintenance console 22 is received and analyzed by the maintenance console control unit 20, and the maintenance console control unit 20
The test execution unit 3 receives an output signal from the test execution unit 3, creates a test execution signal, and transmits an activation signal from the trunk 7 to the subscriber line exchange 24. The response signal from the subscriber line exchange 24 is
The DT reception monitoring unit 19 of the private branch exchange 1 receives and monitors the data. When the maintenance console control unit 20 receives a signal from the DT reception monitoring unit 19, the maintenance console control unit 20 receives the signal.
The test result is transmitted to the maintenance console 22, and the test result is displayed on the display unit 21 of the maintenance console 22.

[0004]

Since the conventional test apparatus is configured as described above, the call confirmation by dialing is not performed, and the telephone call by the telephone is required to execute the call confirmation test by dialing. There is a problem in that confirmation is necessary, a connection error may occur manually, and it takes time. Further, there is a similar problem when confirming the quality of the transmission line such as the level drop on the communication line. In addition, since there is no automatic test function according to the status of the line under test, if the line under test is not empty, it will be a test failure and it will be necessary to re-execute the test manually. There was a problem that an error might occur due to. In addition, if the test is performed when the number of available lines is small, there is a problem that the available lines for the user's telephone call are insufficient for the test, and the call cannot be made, which may hinder the operation. Further, in the call test, in the case of the test NG, a manpower is required to determine whether or not it is the own exchange, and there is a problem that the efficiency is poor and a human error may occur. Furthermore, in the case of a call test, in the case of a test NG, there is a problem in that human beings are required to separate which part of the network other than the own exchange, which is inefficient and human error may occur. there were.

The present invention has been made in order to solve the above problems, and automatically executes a call confirmation test without human intervention to confirm the normality of a communication path in a network to perform a call test. The purpose is to obtain a test device for the network to identify the location of failure in case of failure.

[0006]

A network test apparatus according to the present invention is a network test apparatus for confirming the normality of a call path in a network connected through an exchange by a call test. A test execution unit that sends a call line control instruction to the exchange in accordance with the test instruction and notifies the test result to the test instruction destination, and a call for dialing a call path by dialing according to the above-mentioned call line control instruction content. And a tone sound source that sends out a tone of a certain level when the line is connected by the call line control unit,
A test control means for controlling a call test, a test instruction transmitting section for transmitting a test instruction to the exchange according to a test condition of a command inputted, and a telephone terminal interface section functioning as a telephone terminal line-connected through the exchange. And a tone detection unit for detecting a tone transmitted from the exchange through the telephone terminal interface unit.

Further, the test control means is further provided with a line quality measuring unit for measuring the level of the tone transmitted from the exchange and the line error rate.

Further, the exchange is provided with a line state monitoring unit for monitoring the line state based on an instruction from the test execution unit, and the test instruction transmitting unit of the test control means has a plurality of test target lines in the exchange. The test execution unit of the above exchange sends the specified test from the line whose line status has become vacant, and the test execution unit of the above exchange responds to the instruction based on the monitoring result by the line status monitoring unit. Is monitored and a call test is performed from an idle line among a plurality of lines.

Further, the test instruction transmitting section of the test control means specifies a plurality of test target lines and the number of testable free lines, and the number of free lines in the designated lines is equal to or larger than the designated number of testable free lines. The test execution unit of the above switching equipment waits for the test until the number of idle lines in the designated line for the instruction becomes equal to or greater than the designated number of available idle lines for the test. It is characterized in that the test is executed when the number of lines becomes equal to or larger than the designated number of testable free lines.

Further, the test execution unit of the exchange notifies the test control unit side of the reason why the connection cannot be established when the call test using the tone sound source is unsuccessful, and the test control unit is notified of the test result. And a test result analyzing section for analyzing the reason why the connection failure is notified from the exchange and discriminating whether the reason for the failure of the call test is the above-mentioned exchange or another exchange.

Further, when the cause of the failure of the call test is not the exchange that has instructed the test, the test result analysis unit determines the cause of the failure of the call test based on the execution of the call test of the other exchanges constituting the network. It is characterized in that the location on the network is identified for each exchange.

[0012]

In the network test apparatus according to the present invention, in the network test apparatus for confirming the normality of the call path in the network connected through the switch by the call test, the test instruction is given to the switch. According to the above, a test execution unit that sends a call line control instruction and notifies the test result to the test instruction destination, and a call line that executes a call for dialing a call path according to the above-mentioned call line control instruction content A control unit and a tone sound source for transmitting a tone of a certain level when the line is connected by the call line control unit are provided, and the test control means for controlling the call test is instructed to the exchange according to the test conditions of the command input. And a telephone terminal that functions as a telephone terminal connected to the line via the above-mentioned exchange. By providing an interface section and a tone detection section for detecting a tone sent from the exchange through the telephone terminal interface section, a call confirmation test is automatically executed without human intervention to perform a call path in the network. You can check the normality of.

Further, the test control means is further provided with a line quality measuring unit for measuring the level of the tone transmitted from the exchange and the line error rate, whereby the line quality of the connection line can be automatically measured. it can.

Further, the exchange is provided with a line state monitoring unit for monitoring the line state based on an instruction from the test execution unit, and the test instruction transmitting unit of the test control means has a plurality of test target lines in the exchange. The test execution unit of the above exchange sends the specified test from the line whose line status has become vacant, and the test execution unit of the above exchange responds to the instruction based on the monitoring result by the line status monitoring unit. It is possible to automatically execute the test according to the line status of the test target line by monitoring the call and executing the call test from an empty line from a plurality of lines. As a result, the test will not be executed again, and the test efficiency will not be reduced.

Further, the test instruction transmitting section of the test control means specifies a plurality of test target lines and the number of testable free lines, and the number of free lines in the designated lines is equal to or larger than the designated number of testable free lines. The test execution unit of the above switching equipment waits for the test until the number of idle lines in the designated line for the instruction becomes equal to or greater than the designated number of available idle lines for the test. When the number of lines exceeds the specified number of available testable free lines, the test is executed, and the test is executed due to the small number of free lines, so that it does not hinder the call of general users. The user's call line can be reliably secured.

Further, the test execution unit of the exchange notifies the test control device side of the reason why the connection cannot be established when the call test by the tone sound source is unsuccessful, and the test control device is notified of the test result. In addition, when the test result is NG, the test result analysis unit is further provided to analyze the connection failure reason notified from the exchange and identify whether the reason for the call test failure is due to the above-mentioned exchange or another exchange. It can be identified whether it is a switch or another switch.

Further, when the cause of the failure of the call test is not the exchange which has instructed the test, the test result analysis unit determines the cause of the failure of the call test based on the execution of the call test of the other exchanges constituting the network. It is possible to identify which switch on the network is the cause of the call test failure in the case of the test result NG by identifying the location on the network for each switch.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a configuration diagram of a network test apparatus according to the first embodiment. In FIG. 1, the network is composed of the exchange 1 and another exchange 25 having the same function as the exchange 1. Reference numeral 8 is a computer as a test control means for controlling the network test. Here, the exchange 1 has a computer interface unit 2 (hereinafter, the interface is simply referred to as an I / F) having a function of receiving and analyzing an instruction and transmitting a notification with the computer 8.
And a test execution unit 3 that interprets an instruction from the computer 8 to give an instruction to a related part and notifies a test result, and executes a monitoring of the line state according to an instruction from the test execution unit 3 and a test execution unit of the result. 3, a line status monitoring unit 4 for notifying the communication unit 3, a call line control unit 5 for executing a call path setting such as transmission according to an instruction from the test execution unit 3, and a tone sound source for sending out a specified level tone to the call path. And a trunk 7 for controlling the I / F with the line.

The computer 8 is designated by an input device 9 such as a keyboard, an output device 10 such as a console, a command analysis unit 12 that analyzes a command input from the input device 9, and an input command. A test instruction transmission unit 13 for transmitting a test instruction according to the test conditions to the exchange 1, a test result analysis unit 14 for analyzing the test result notified from the exchange 1, and an instruction transmission and notification reception / analysis with the exchange 1. An exchange I / F unit 15 having a function, a telephone terminal I / F unit 16 having a function for being accommodated in the exchange 1 as a telephone terminal, a tone detection unit 17 having a tone detection function, a level and a line error rate. And a line quality measuring unit 18 having a measuring function of. In addition, exchange 1
Another exchange 25 is provided between the computer 8 and the computer 8, and a computer I / I having an instruction receiving / analyzing and notification transmitting function with the computer 8 similar to the exchange 1 is provided.
The trunks 7 and 7 for controlling the I / F between the F section 2 and the line between the exchange 1 and the computer 8 are provided.

Next, the operation of the above configuration will be described. First, the network maintainer uses the input device 9 of the computer 8 to select a network such as "Which dialing operation is used to confirm the call with which exchange" and "Tone detection is used to confirm the call on the computer side". Input the test conditions of. The command of the input test condition is analyzed by the command analysis unit 11, and the test instruction transmission unit 13 is requested to execute the test according to the test condition. The test instruction transmitting unit 13 transmits a test instruction to the exchange 1 through the exchange I / F unit 15.

The exchange 1 receives and analyzes the instruction from the computer 8 in the computer I / F unit 2, and notifies the test execution unit 3 of the test instruction. In accordance with the instruction contents, the test execution unit 3 instructs the telephone line control unit 5 to control the telephone line for making a call to the telephone terminal I / F unit 16 of the computer 8 together with the dialing contents. In the call line control unit 5, dialing is performed in accordance with the instruction content to make a call for setting a call path, and if the connection is successful, the tone sending device 6 in the exchange is connected and the test result of the connection success is tested. Notify Part 3. On the other hand, if the connection is not possible, the test execution unit 3 is notified of the connection failure reason and the test result of the connection failure. The test execution unit 3 displays the test result on the computer I /
The computer 8 is notified through the F section 2.

In this way, the computer 8 which receives the notification of the test result analyzes the test result in the test result analysis unit 14 and requests the display unit 12 to display the connection failure if the test result is not connectable. The display unit 12 displays the fact on the output device 10. If the connection is successful, the test result analysis unit 14 instructs the tone detection unit 17 to check the tone detection status. The tone detection unit 17 notifies the test result analysis unit 14 that the test is normally completed if the tone is normally detected. On the other hand, when the tone has not been normally detected, the test result analysis unit 14 is notified of the tone detection abnormality.
The test result analysis unit 14 requests the display unit 12 to display the test result, and the display unit 12 displays the fact on the output device 10.

Therefore, according to the first embodiment described above, it is possible to automatically execute the call confirmation test by dialing without any manual operation and confirm the normality of the communication path in the network based on the tone detection. .

Embodiment 2 FIG. In the above-described first embodiment, the call confirmation is executed by connecting to the tone detecting unit 17 on the computer 8 side, but the line quality can be measured by connecting to the line quality measuring unit 18 in the procedure described below.

First, the network maintenance person uses the input device 9 of the computer 8 to select "which dialing operation should be used to confirm a call with which exchange" and "what level the tone transmission level is when connection is possible." Enter the command for network test conditions such as "Set to" or "Check the call on the computer side by measuring the line quality." The command analysis unit 11 analyzes the test conditions of the input command and according to the test conditions, the test instruction transmission unit 1
3. Request test execution. The test instruction transmitting unit 13 transmits a test instruction to the exchange 1 through the exchange I / F unit 15.

The exchange 1 receives and analyzes the instruction from the computer 8 in the computer I / F section 2, and if the instruction is a test instruction, it notifies the test execution section 3. In accordance with the instruction contents, the test execution unit 3 instructs the telephone line control unit 5 to control the telephone line for making a call to the telephone terminal I / F unit 16 of the computer 8 together with the dialing contents. In the call line controller 5,
Dialing for call path setting is executed according to the instruction content, and if the connection is successful, the tone transmitting device 6 in the exchange is connected at the instructed level and the test result of the connection success is tested by the test execution unit. Notify 3. On the other hand, if the connection is not possible, the test execution unit 3 is notified of the connection failure reason and the test result of the connection failure. The test execution unit 3 notifies the computer 8 of the test result through the computer I / F unit 2.

Computer 8 for receiving notification of test results
Analyzes the test result in the test result analysis unit 14, and if the test result is not connectable, requests the display unit 12 to display that connection has failed, and the display unit 12 displays the fact on the output device 10.
On the other hand, if the test result is successful connection, the test result analysis unit 14
Instructs the line quality measuring unit 18 to check the line quality such as tone level and line error rate. The line quality measuring unit 18 measures line quality such as tone level and line error rate, and notifies the test result analyzing unit 14 of the measurement result. The test result analysis unit 14 requests the display unit 12 to display the measurement result, and the display unit 12 displays the fact on the output device 10.

Therefore, according to the second embodiment, by further including the line quality measuring unit 18 for measuring the level of the tone transmitted from the exchange 1 and the line error rate,
The line quality of the connection line can be automatically measured.

Example 3. In addition, in the above-described first embodiment,
If the test target line on the exchange 1 side is not empty, it is necessary to input the command again, but in the procedure described below, the computer 8 side issues a test instruction to "run multiple lines as test targets and start the test from the empty line". By doing so, the test can be automatically executed regardless of the line status.

First, the network maintenance engineer uses the input device 9 of the computer 8 to select "which dialing operation should be used to confirm a call with which exchange", "which line should be the test target", and "the line should be tested". Enter network test conditions such as "wait for test until it becomes empty" and "execute call confirmation on computer by tone detection". The command analysis unit 11 analyzes the test conditions of the input command and according to the test conditions, the test instruction transmission unit 1
3. Request test execution. The test instruction transmitting unit 13 transmits a test instruction to the exchange 1 through the exchange I / F unit 15.

The exchange 1 receives and analyzes the instruction from the computer 8 in the computer I / F section 2, and if the instruction is a test instruction, it notifies the test execution section 3. In the test execution unit 3, if the test instruction from the computer 8 is “wait until the line to be tested becomes idle”, the line status monitoring unit 4 notifies the test execution unit 3 if the line to be tested becomes idle. Instruct to notify. In the test execution unit 3, which has received the notification from the line status monitoring unit 4 that the test target line has become empty, the call line control unit 5 sends the dialing content to the computer 8
To instruct call line control for making a call to the telephone terminal I / F unit 16. The following procedure is the same as that of the first embodiment, and will be omitted.

Therefore, according to the third embodiment, the exchange 1 is provided with the line state monitoring unit 4 for monitoring the line state based on the instruction from the test execution unit 3, and the test instruction transmission unit 13 of the computer 8 is A plurality of lines to be tested are designated to the exchange 1, and a test to be performed is sent from the line whose line state is vacant, and the test execution unit 3 of the exchange 1 receives the line state monitoring unit 4 in response to the instruction. By monitoring the status of the specified line based on the monitoring result of, and executing the call test from an empty line from multiple lines, the test can be automatically executed according to the line condition of the line to be tested. Yes, the line under test is not empty and test NG
Therefore, there is no need to execute the test again, so that the test efficiency is not reduced.

Example 4. In the above-described third embodiment, the test instruction “to test a plurality of lines to be tested from an empty line” is issued from the computer 8 side. However, “a plurality of lines are to be tested and free lines among them are constant. It is also possible to give a test instruction that the test is executed from the point when the number exceeds the limit. The procedure is shown below.

First, the network maintenance engineer uses the input device 9 of the computer 8 to select "which dialing operation is used to confirm a call with which exchange", "which line is to be tested", and "test". Input the test conditions of the network such as "Wait for the test until the number of free lines in the target line exceeds a certain number", "Execute the call confirmation on the computer side by tone detection", etc. The command analysis unit 11 analyzes the command of the input test condition, and requests the test instruction transmission unit 13 to execute the test according to the test condition. The test instruction transmitting unit 13 transmits a test instruction to the exchange 1 through the exchange I / F unit 15.

The exchange 1 receives and analyzes the instruction from the computer 8 in the computer I / F section 2, and if the instruction is a test instruction, it notifies the test execution section 3. In the test execution unit 3, if the test instruction from the computer is set to “wait the test until the number of free lines in the line under test reaches a certain number or more”, the line state monitoring unit 4 When the number of available lines in (1) exceeds a certain number, the test execution unit 3 is informed. When the test execution unit 3 receives the notification from the line status monitoring unit 4 that the number of free lines in the test target line has exceeded a certain number, the call line control unit 5 informs the telephone line terminal 5 of the computer 8 together with the dialing contents. Instruct the call line control for making a call to the I / F unit 16. The following procedure is the same as that of the first embodiment, and will be omitted.

Therefore, according to the fourth embodiment, the test instruction transmitting unit 13 designates a plurality of test target lines and the number of testable idle lines, and the number of idle lines in the designated lines is designated as the testable idle line. The test execution unit 3 of the exchange 1 sends the designation to wait for the test until the number of lines becomes equal to or more than the number of lines, and the number of vacant lines in the designated lines becomes greater than or equal to the designated testable vacant line in response to the instruction. Wait until the test, and when the number of available lines exceeds the specified number of available idle lines that can be tested, the test is executed. It is possible to secure the call line for general users without fail.

Example 5. In the first embodiment described above, the test result was not automatically analyzed on the computer 8 side,
When the test is not completed normally by the procedure described below, it is possible to automatically analyze and identify on the computer 8 side whether or not the cause of the call test failure is the exchange 1 that has instructed the test.

First, the network maintenance engineer uses the input device 9 of the computer 8 "Which dialing operation is used to confirm the call with which exchange" and "Tone detection is used to confirm the call on the computer side". , Enter the test conditions of the network such as "Automatically analyze the test results". The command analysis unit 11 analyzes the command of the input test condition, and requests the test instruction transmission unit 13 to execute the test according to the test condition. Test instruction transmission unit 13
Sends a test instruction to the exchange 1 through the exchange I / F unit 15.

The exchange 1 receives and analyzes an instruction from the computer 8 in the computer I / F section 2, and if the instruction is a test instruction, it notifies the test execution section 3. In accordance with the instruction contents, the test execution unit 3 instructs the telephone line control unit 5 to control the telephone line for making a call to the telephone terminal I / F unit 16 of the computer 8 together with the dialing contents. In the call line controller 5,
Dialing for call path setting is executed according to the instruction content, and if the connection is successful, the tone transmitting device 6 in the exchange is connected and the test execution unit 3 is notified of the test result of the connection success. On the other hand, if the connection is not possible, the test execution unit 3 is notified of the connection failure reason and the test result of the connection failure. The test execution unit 3 displays the test result in the computer I / F unit 2
To notify the computer 8 through.

The computer 8 notified of the test result,
The test result analysis unit 14 analyzes the test result and, as shown in FIG. 2, if the test result is not connectable (step S2
1) The display unit 12 is requested to display the fact that the connection has failed (abnormality of the exchange instructed by the test), and the display unit 12 displays the fact on the output device 10 (steps S22 and S23). If the test result is successful connection, the test result analysis unit 14 instructs the tone detection unit 17 to confirm the tone detection status. The tone detection unit 17 indicates that the test is normally completed (step S24) if the tone is normally detected, and that the tone detection is abnormal (step S25) if the tone is not normally detected (step S25). To notify.

Based on the test results obtained by the above procedure, the test result analysis unit 14 determines on the computer 8 side whether the cause of the call test failure is the exchange 1 which has instructed the test in the flow shown in FIG. It can be automatically analyzed and identified, and the result is requested to be displayed on the display unit 12, and the display unit 12 displays the fact on the output device 10.

Therefore, according to the fifth embodiment, the test execution unit 3 of the exchange 1 notifies the computer of the reason why the connection cannot be established when the call test by the tone transmitting device 6 is unsuccessful, and the computer. By providing the test result analysis unit 14 on the side, which analyzes the test result and the reason why the connection failure is notified from the exchange 1, and identifies whether the reason for the call test failure is due to the exchange 1 or another exchange, If the test result is NG, it can be discriminated whether it is due to the own exchange or another exchange.

Example 6. In the above-described fifth embodiment, when the test is not normally completed, the computer 8 side automatically analyzes whether or not the cause of the call test failure is the exchange 1 that has instructed the test. If it is not the exchange 1 that has instructed the test, the computer 8 may also execute a call test to another exchange 25 to determine which part on the network has the problem.

That is, according to the sixth embodiment, when the cause of the call test failure is not the switch that instructed the test, the test result analysis unit 14 is based on the execution of the call test of the other switches forming the network. By identifying the location on the network that causes the call test failure on a switch-by-switch basis, it is possible to identify which switch on the network caused the call test failure when the test result is NG. effective.

[0045]

As described above, according to the present invention, in the network test apparatus for confirming the normality of the communication path in the network connected through the exchange by the call test, Sends a call line control instruction according to the test instruction and notifies the test result to the test instruction destination, and executes a call for dialing the call path by dialing according to the above-mentioned call line control instruction content. A call line control unit and a tone sound source for transmitting a tone of a certain level when the line is connected by the call line control unit are provided, and a test control means for controlling a call test is provided to the exchange according to a test condition of a command input. A test instruction transmitting unit for transmitting a test instruction, and a telephone terminal interface that functions as a telephone terminal line-connected through the above exchange. By providing a voice communication unit and a tone detection unit for detecting the tone transmitted from the exchange through the telephone terminal interface unit, a telephone call confirmation test is automatically executed without human intervention, and a telephone call path in the network is executed. The effect is that the normality of can be confirmed.

Further, the test control means is further provided with a line quality measuring unit for measuring the level of the tone transmitted from the exchange and the line error rate, so that the line quality of the connection line can be automatically measured. The effect is that you can do it.

Further, the exchange is equipped with a line state monitoring unit for monitoring the line state based on an instruction from the test execution unit, and the test instruction transmitting unit of the test control means has a plurality of test target lines in the exchange. The test execution unit of the above exchange sends the specified test from the line whose line status has become vacant, and the test execution unit of the above exchange responds to the instruction based on the monitoring result by the line status monitoring unit. It is possible to automatically execute the test according to the line status of the test target line by monitoring the call and executing the call test from an empty line from a plurality of lines. As a result, the test will not be executed again, and the test efficiency will not be reduced.

Further, the test instruction transmitting section of the test control means specifies a plurality of test target lines and the number of testable free lines, and the number of free lines in the designated lines is equal to or larger than the designated number of testable free lines. The test execution unit of the above switching equipment waits for the test until the number of idle lines in the designated line for the instruction becomes equal to or greater than the designated number of available idle lines for the test. When the number of lines exceeds the specified number of available testable free lines, the test is executed, and the test is executed due to the small number of free lines, so that it does not hinder the call of general users. This has the effect of ensuring the user's telephone line.

Further, the test execution unit of the exchange notifies the test control device side of the reason why the connection cannot be established when the call test by the tone sound source is unsuccessful, and the test result is sent to the test control device. In addition, when the test result is NG, the test result analysis unit is further provided to analyze the connection failure reason notified from the exchange and identify whether the reason for the call test failure is due to the above-mentioned exchange or another exchange. There is an effect that it is possible to discriminate between the exchange and another exchange.

Further, when the cause of the failure of the call test is not the exchange that has instructed the test, the test result analysis unit determines the cause of the failure of the call test based on the execution of the call test of the other exchanges forming the network. By identifying the locations on the network for each switch, it is possible to identify which switch on the network is the cause of the call test failure in the case of the test result NG. It has the following effects.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a network test apparatus applied to each embodiment of the present invention, and is a block diagram of an exchange and a computer.

FIG. 2 is a flow chart for identifying whether or not the cause of the call test failure is the exchange that has instructed the test in the fifth embodiment of the present invention.

FIG. 3 is a block diagram of a conventional line connection test system.

[Explanation of symbols]

1, 25 exchanges (including private branch exchanges), 2 computer I / F unit, 3 test execution unit, 4 line status monitoring unit, 5 call line control unit, 6 tone sending device, 7 trunk, 8 computer, 9 input device 10 output device 11 command analysis unit 12 display unit 13 test execution unit 14 test result analysis unit 15 exchange I / F
Section, 16 telephone terminal I / F section, 17 tone detection section, 1
8 Line quality measurement section.

Claims (6)

[Claims] 1. A network test apparatus for confirming the normality of a communication path in a network connected through an exchange by a call test, and sending a call line control instruction to the switch according to a test instruction. At the same time, a test execution unit for notifying the test result to the test instructor, a call line control unit for executing a call for dialing a call route according to the above-mentioned call line control instruction, and a call line control unit A tone sound source for transmitting a tone of a certain level when the line is connected by the test control means for controlling the call test, and a test instruction transmitting section for transmitting a test instruction to the exchange according to the test conditions of the command to be input, A telephone terminal interface unit that functions as a telephone terminal connected to the line via the exchange,
A network test apparatus comprising: a tone detection unit that detects a tone transmitted from the exchange through the telephone terminal interface unit. 2. The network test apparatus according to claim 1, wherein the test control means further comprises a line quality measuring unit for measuring a level of a tone transmitted from the exchange and a line error rate. Network test equipment. 3. The network test apparatus according to claim 1, wherein the exchange is provided with a line state monitoring unit that monitors a line state based on an instruction from the test execution unit, and a test of the test control means. The instruction transmission unit sends to the exchange a plurality of lines to be tested and sends an instruction to test from the line whose line status is vacant.The test execution unit of the exchange also monitors the line status for the instruction. An apparatus for testing a network, characterized in that the state of a designated line is monitored based on a monitoring result by a section and a call test is executed from an idle line among a plurality of lines. 4. The network test apparatus according to claim 3, wherein the test instruction transmission unit of the test control means specifies a plurality of test target lines and the number of available idle lines, and the number of idle lines in the designated lines. The test execution unit of the above exchange sends the instruction to wait for the test until the number of available idle lines exceeds the specified number of available idle lines, A test apparatus for a network, which waits for a test until the number of lines exceeds the number of lines, and executes the test when the number of available lines exceeds the number of available idle lines that can be tested. 5. The network test apparatus according to any one of claims 1 to 4, wherein the test execution unit of the exchange has a reason for connection failure when the call test using the tone sound source is unsuccessful. In addition to notifying the test control unit side, the test control unit analyzes the test result and the connection failure reason notified from the exchange to identify whether the call test failure reason is due to the above exchange or another exchange. A network test apparatus, further comprising a test result analysis unit. 6. The network test apparatus according to claim 5, wherein the test result analysis unit performs a call test of another switch forming a network when the cause of the call test failure is not the switch instructing the test. A network test device characterized by identifying, on an exchange-by-switch basis, the location on the network that causes a call test failure based on execution.