JPH0423465B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] In order to test system subscriber lines such as telephones,
The test signal transfer system, which is set up by incorporating test calls into normal call processing, was configured to be used for subscriber line tests. To this end, a control unit bus is provided, and information input/output means is connected to the bus via a controllable test input/output connection means, and the system test input/output is connected to the controllable test input/output connection means. They were connected to form a test signal transfer system. This makes it possible to support logging of subscriber line test results and addition of various test commands.

[Industrial application field]

The present invention relates to a subscriber line testing system, and more specifically to a subscriber line testing system that also has a logging function for subscriber line test results, an additional function for various commands, and the like.

2. Description of the Related Art In telephone exchange systems, subscriber lines are tested periodically or irregularly in order to maintain normal exchange functions. For such tests, the exchange system is configured such that a test system as a necessary subsystem is formed in the exchange system to perform the necessary tests. It is desired that the test system be configured to sufficiently achieve its purpose.

[Conventional technology]

Conventional subscriber line testing methods allow testing to be performed from a central maintenance center or switching office. In the case of a centralized maintenance center, the configuration is as shown in Figure 5.
3, start the subscriber line test device 32 from the centralized subscriber line test stand 84 using a keyboard or the like,
Various commands are sent to perform predetermined measurements, and the results are displayed on the centralized subscriber line test stand 84. (5th
It is almost the same except that the centralized subscriber line test stand 84 in FIG.

[Problem that the invention seeks to solve]

With conventional methods, test results can only be displayed for the tester to recognize, but measurement information cannot be logged. Furthermore, it has been difficult to send out detailed commands that can change the measurement level (threshold) in accordance with the condition of the subscriber line, simply by operating the console.

The present invention was created in view of these problems, and it is an object of the present invention to provide a subscriber line test method that can perform logging of test results, flexible command sending, and the like.

[Means for solving problems]

FIG. 1 (Part 1) shows a principle block diagram of the first invention. As shown in this figure, in the first invention, when the subscriber line is tested by the subscriber line testing device 32 in the local stage 3, the digital link interface device 82 of the centralized maintenance center 10 performs the central maintenance. The central maintenance center 10 of the subscriber line test system is connected to the digital trunk 35 of the local stage 3 via the digital trunk 81 of the center 10.
, a control section 4 and a bus 5 connected to the control section 4.
, an information input/output means 7 , a controllable test input/output connection means 6 for connecting the information input/output means 7 to the control section 4 via the bus 5 , and the control section 4
test connection means 8 for connecting the digital link interface device 82 via the bus 5;
and. Then, test information from the information input/output means 7 is taken into the control section 4 via the test input/output connection means 6 and the bus 5, and from the control section 4 via the test connection means 8, the test information is transferred to the digital link. It is sent to the interface device 82 and tested by the subscriber line testing device 32, and from the subscriber line testing device 32 to the digital link interface device 82 via a test signal transfer system formed in the local stage 3. The test results transferred to the control section 4 are taken in through the digital link interface device 82, and
The first invention is configured such that the information is outputted from the control section 4 to the information input/output means 7 via the bus 5 and the test input/output connection means 6.

As shown in FIG. 1 (part 2), the second invention provides a digital network 82' to which the subscriber line and the subscriber line testing device 32 are connected, and a subscriber network of the local stage 3 having a control unit 4A. The line test system includes a bus 5 connected to the control section 4A.
A, an information input/output means 7A, and a connectable test input/output connecting means 6A for connecting the information input/output means 7A to the control section 4A via the bus 5A;
A controllable test connection means 8A for connecting the control section 4A to the digital network 82' via the bus 5A, and a subscriber line test adapter 8 connected to the digital network 82'.
7 is provided. And the information input/output means 7A
The test information from the test input/output connection means 6
A, and the control unit 4A via the bus 5A, and from the control unit 4A to the test connection means 8.
A. The subscriber line testing adapter 87 sends the digital data to the subscriber line testing device 32 via the digital network 82' and performs a test on the subscriber line testing device 32. The test results transferred to the subscriber line test adapter 87 via the network 82' are taken into the control unit 4A via the test connection means 8A, and are transferred from the control unit 4A to the bus 5A for test input/output. The second invention is configured such that the information is output to the information input/output means 7A via the connection means 6A.

[Effect]

In the first invention, test information from the information input/output means 7 is taken into the control section 4 via the test input/output connection means 6 and the bus 5.
After the control unit 4 sends a start command to the digital link interface device 82 via the test connection means 8 and starts it according to the conventional technique, the command is transferred to the digital link interface device 82. The digital link interface device 82 that responded to the subscriber number forms a test signal transfer system in the local stage 3 in the same manner as in the prior art.

A test is performed on the test information given to the subscriber line test device 32 via the formed test signal transfer system.

The test results are transferred from the addition line testing device 32 to the digital link interface device 82 via a test signal transfer system formed in the local stage 3. The digital link interface device 82 transfers the test results to the control section 4. The information is outputted from the control section 4 to the information input/output means 7 via the bus 5 and the test input/output connection means 6.

As described above, a call issued for a subscriber test is handled in the local stage 3 in the same way as a call in normal call processing, and a test signal transmission/reception system is formed with the control section 4. This signal transmission/reception system can serve as a flexible means for transmitting/receiving various test signals for subscriber line tests.

While the first invention provides means for forming a subscriber line test system from the centralized maintenance center 10, the second invention forms a similar subscriber line test system within the local stage 3. With one exception, the first
This is similar to the invention of The control section 4A in the second invention is connected to the control section 4 in the first invention, the bus 5A is connected to the bus 5, the information input/output means 7A is connected to the information input/output means 7, and the test input/output connection means 6A is connected to the test input/output means 7. The test connection means 8A corresponds to the output connection means 6 and the test connection means 8. In addition, the test connection means 8A is connected to the subscriber line test equipment 3 as described above.
A subscriber line test adapter 87 is also provided for interfacing with 2.

These means provide the subscriber line testing system with flexible means for transmitting and receiving various test control signals for subscriber line testing.

〔Example〕

FIG. 2 shows an embodiment of the first invention. This embodiment is an example in which subscriber lines are tested from the centralized maintenance center 10. In this figure, 41 is a central control unit, which is connected to the bus 5 and also to the main memory 42. A typewriter 71 is connected to the bus 5 via a typewriter controller 61 and a channel controller 62. 83' is a centralized test trunk used in the present invention;
It is connected to the bus 5 via a typewriter controller 85 and a channel controller 86, as well as a digital link interface device 8.
Connected to 2. 83 is an existing centralized test trunk, and 84 is a centralized subscriber line test stand connected to the centralized test trunk 83 and used to input commands for testing. 81 and 35 are digital trunks. 35 is local stage (exchange station)
The line test adapter 36 is connected to the line test adapter 36 via the digital network 34 under the control of the central control unit 37 of the LS, and the subscriber line test adapter 36 is connected to the subscriber line test equipment via the digital network 34 and the line concentrator 33. 32. 12 is a subscriber line telephone.

The subscriber line test mode in this embodiment will be explained below.

In order to test the subscriber line, first a start command is input from the typewriter 71. This command is received by the central control unit 41 via the typewriter controller 61 and the channel controller 62, and from there the channel controller 8
6 and type rider controller 85 to central test trunk 83' to activate it (100 in FIG. 3).

Next, the subscriber number of the subscriber under test is typed in from the typewriter 71 (101 in FIG. 3).
Depending on the number, a path to the central test trunk 83' is connected via the digital link interface device 82, the digital trunks 81 and 35, the digital network 34, the subscriber line test adapter 36, and the line concentrator 33. The line is extended to the test device 32 (102 in FIG. 3). Thus, conditions have been established in which the subscriber line under test can be tested.

In order to test the subscriber line using the path thus set, a test command is input from the typewriter 71 (103 in FIG. 3). This command may be input directly from the typewriter 71, or may specify a command stored in the main storage device 42 and executed by the central control device 41. By being able to specify such commands, detailed commands corresponding to the status of the subscriber line, such as voltage and resistance value, can be prepared in detail in the software, making subscriber line testing easier. It becomes possible to provide the necessary means to be able to adapt flexibly to the situation.

The test results performed for the input test commands are sent to the central control unit 41 via the above-mentioned bus 5.
is stored in the main storage device 42 of the typewriter 7.
1 can also output the hard copy (104 in FIG. 3). This makes it possible to log test results, which is advantageous in conducting tests.

If the test for the test command input as described above has not been completed, a new test command is input and the same process is performed; however, if the input of the necessary commands has been completed, ,
Finish the exam.

FIG. 4 shows an embodiment of the second invention. This embodiment is an example in which a test similar to the embodiment in FIG. 2 is performed on the local stage LS. In this figure, the same components as in FIG. 2 are given the same reference characters and their explanations will be omitted.

In this embodiment, a central test trunk 83'' is added between the typewriter controller 61 and the digital network 82' as a means of extending the path necessary for testing from the central control unit 41 to the subscriber line test adapter 87. The feature of this embodiment is that it is provided to enable connection to the public line test adapter 87.

Therefore, the test path from the centralized test trunk 83' in the embodiment of FIG. 2 to the subscriber line test adapter 36 via the digital link interface device 82, the digital trunk 81, and 35 is immediately accessed from the centralized test trunk 83'. The essential features of the present invention do not change at all simply by replacing the path leading to the cable test adapter 87, and the operation of the embodiment in FIG. 4 follows the flowchart used to explain the operation of the embodiment in FIG. A detailed explanation will be omitted, only stating that the process can be advanced accordingly.

〔Effect of the invention〕

As explained above, according to the present invention, test information is sent and received using a test signal transfer system that is set up by handling test calls in the same way as normal call processing. In addition to being able to perform tests that flexibly adapt to the conditions of the network, the test results can also be logged.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the principle of the present invention, Fig. 2 is a diagram showing one embodiment of the invention, Fig. 3 is a flowchart for explaining the embodiment of Fig. 2, and Fig. 4 is a diagram showing an embodiment of the invention. FIG. 5 is a diagram showing another conventional subscriber line testing method, and FIG. 6 is a diagram showing another conventional subscriber line testing method. In Figure 1, 3 is a local stage, 4,
4A is a control unit, 5 and 5A are buses, 6 and 6A are test input/output connection means, 7 and 7A are information input and output means,
8, 8A are connection means for testing, 10 is a centralized maintenance center, 32 is a subscriber line testing device, 81 is a digital trunk, 82 is a digital link interface device, 82' is a digital network, 8
7 is a subscriber line test adapter. 2 and 4, 10 is a central maintenance center, 3 is a local stage, 5 is a bus, 37 and 41 are central control units, 38 and 42 are main storage units, 62 and 86 are channel controllers, and 61 and 85 are is a typewriter controller, 71 is a typewriter, 83,8
3', 83'' are centralized test trunks, 82 is a digital link interface device, 35, 81 are digital trunks, 36, 87 are subscriber line test adapters, 34, 82' are digital networks,
33 is a line concentrator, 32 is a subscriber line test device, 12
is a subscriber line telephone.

Claims (1)

[Claims] 1. When testing a subscriber line using the subscriber line testing device 32 at the local stage 3, the digital link interface device 82 of the centralized maintenance center 10 connects the digital trunk 81 of the centralized maintenance center 10. In the subscriber line test system, which is connected to the digital trunk 35 of the local stage 3 via the central maintenance center 10, the central maintenance center 10 includes: a control section 4; a bus 5 connected to the control section 4; and an information input/output means 7. , controllable test input/output connecting means 6 for connecting the information input/output means 7 to the control section 4 via the bus 5; a test connection means 8 for connection, the test information from the information input/output means 7 is taken into the control section 4 via the test input/output connection means 6 and the bus 5; The signal is sent to the digital link interface device 82 via the connection means 8 for testing by the subscriber line testing device 32, and the test signal transfer system formed from the subscriber line testing device 32 to the local stage 3 The test results transferred to the digital link interface device 82 via the digital link interface device 82 are taken into the control section 4, and from the control section 4 are transferred to the bus 5 and the test input/output connection means. 6, the subscriber line test method is characterized in that the information is output to the information input/output means 7 through the information input/output means 7. 2 Digital network 82' to which the subscriber line and subscriber test equipment 32 are connected, and the control unit 4
A local stage 3 subscriber line test system having a bus 5A connected to the control section 4A, an information input/output means 7A, and the information input/output means 7A connected to the control section 4A via the bus 5A. a connectable test input/output connecting means 6A to be connected; a controllable test connecting means 8A to connect the control section 4A to the digital network 82' via the bus 5A; A subscriber line test adapter 87 to be connected is provided, the test information from the information input/output means 7A is taken into the control section 4A via the test input/output connection means 6A and the bus 5A, and the control section 4A is connected to the subscriber line test adapter 87. from the test connection means 8A, the subscriber line test adapter 87, and the digital network 82' to the subscriber line testing device 32 for testing by the subscriber line testing device 32. The test results transferred from the test device 32 to the subscriber line test adapter 87 via the digital network 82' are taken into the control section 4A via the test connection means 8A,
A subscriber line test method characterized in that output is performed from the control section 4A to the information input/output means 7A via the bus 5A and the test input/output connection means 6A.