JPH05316549A - System for testing changeover device - Google Patents

Abstract

PURPOSE:To quickly and surely check the normal and abnormal state of the changeover equipment by providing a test signal transmission section or a test signal detection section to each transmission line of the changeover device. CONSTITUTION:Each of transmission lines 401-40m of a changeover device is provided with each of test signal transmission sections 201-20m and each of other transmission lines 501-50m is provided with each of test signal transmission sections 301-30m. When the normal and abnormal changeover is checked, a command is given to one or two of the test signal transmission sections 201-20m as to the combination between the transmission lines to be tested to send a test signal. Furthermore, the test signal transmission sections 301-30m provided in the other prescribed transmission lines 501-50m are monitored to check whether or not a test signal is detected thereby recognizing whether or not the changeover is normally implemented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test system for a switching device used in a subscriber's exchange, and more particularly to a switching circuit for switching between two or more transmission lines and the transmission lines. And a test method of a switching device having

[0002]

2. Description of the Related Art Conventionally, there has been a switching device test system as shown in FIG. As shown in the figure, the present switching device includes one or more input side transmission lines 4 ₁ to 4 _m , one or more output side transmission lines 5 _{1 to} 5 _n, and the input side transmission line 4
₁ to 4 _m and the switching circuit 1 for switching the connection between the output side transmission lines 5 _{1 to} 5 _n . For the switching device, when performing normal or abnormal test switching state, as shown in the figure, the input transmission line to be subjected to testing of switching from the input-side transmission path 4 ₁ to 4 _m, A test signal transmitting section 62 for transmitting a test signal for performing a normal / abnormal test of the switching circuit 1 is connected, and a test signal detecting section 63 is connected to an output side transmission line to be tested, and the signal is transmitted. By monitoring whether or not a test signal is detected, a normal / abnormal switching of the switching device is inspected.

[0003]

In the conventional example, when performing a test, the test signal transmitting section 62 is connected to the input side transmission lines 4 ₁ to 4 _m to be tested. , The test signal detection unit 6 in the output side transmission lines 5 _{1 to} 5 _{n which} are to be switched with the input side transmission lines 4 ₁ to 4 _m.
3 must be connected each time the test is performed. Therefore, when the number of input-side transmission lines and output-side transmission lines is large and the number of combinations of the switching reaches a huge number, each transmission line is checked every time a normal / abnormal state of the switching circuit is inspected. In order to manually connect the test signal transmitting unit and the test signal detecting unit to each other, a great amount of labor and burden is imposed, it takes a lot of time, and there is a problem that it is possible to make a mistake because it relies on human hands. Had.

Therefore, the present invention has been made for the purpose of providing a test method for a switching circuit which enables a switching test of the switching circuit to be carried out easily, quickly and reliably.

[0005]

[Means for Solving the Problems] Solving the above technical problems
In order to do so, the first invention, as shown in FIG.
Transmission line 40₁~ 40_m, 50₁~ 50_nAnd the transmission line
40₁~ 40_m, 50 ₁~ 50_nSwitching connections between
In the switching device having the switching circuit 10 for performing
Each transmission line 40₁~ 40_mIn addition, a test for normal and abnormal switching
Test signal sending unit 20 for sending test signal₁~ 20
_mAnd other transmission lines 50₁~ 50_nThe test signal
Sending unit 20₁~ 20_mThe detection of the test signal sent from
Test signal detection unit 30₁~ 30_nIs provided
It

On the other hand, in the second invention, as shown in FIG.
Two or more transmission lines 40₁~ 40_m, 50₁~ 50_nAnd this
The transmission line 40₁~ 40_m, 50₁~ 50_nOf the connection between
In a switching device having a switching circuit 10 for switching
The predetermined transmission line 40₁~ 40 _mOne or more from
Upper transmission line 40₁~ 40_mA selection unit 60 for selecting
The transmission path 40 selected by the selection unit 60₁~ 40_mCut off
Test whether switching of replacement circuit 10 is normal or abnormal
And the other transmission line 50₁~ 50
_nOne or more transmission lines 50 from among₁~ 50_nSelection of
The selection unit 70 that makes a selection and the transmission selected by the selection unit 70.
For the transmission path, the test signal transmitted by the test signal transmission unit 20
Having a test signal detection unit 30 for detecting a test signal
Is.

[0007]

Next, the operation of the first invention will be described.
In the present invention, each of the predetermined transmission lines 4 of the switching device is preset.
0₁~ 40_mEach of the test signal transmitters 20₁~ 20_mTo
Provided and other transmission lines 50₁~ 50_nSend test signal to each
Departure 30₁~ 30_nIs provided. Where "predetermined"
Is, for example, one of the input side and the output side of the switching circuit 10.
It is a group transmission line. "Other" means transmission other than "predetermined"
Say the road. When performing a normal / abnormal inspection of switching, switch
For the combination between the transmission lines that are going to be tested for abnormalities
About the test signal transmitting section 2 provided on the predetermined transmission path
0 ₁~ 20_mInstruct one or two of
A test signal is transmitted and another predetermined transmission line 50₁~ 50_nTo
Test signal detection unit 30 provided₁~ 30_nTo monitor
Switching is performed normally by checking whether the test signal is detected.
You can know whether or not you have been broken. In addition, each transmission line
The test signal transmitting section 20 is provided with an switch section.₁~ 20_m
Alternatively, the test signal detector 30₁~ 30_nConnection between
Alternatively, the cutoff may be performed. In this case, the test
If you do not perform a test,
Alternatively, if there is a failure, it may be turned off. Well
Also, the test signal does not necessarily have to be the same for each input side transmission line.
It is not necessary to use different test signals for each combination of transmission lines.
You can also do it.

On the other hand, the operation of the second invention will be described. According to the present invention, the test signal transmitting section 2 is provided for the transmission paths 40 ₁ to 40 _m selected by the selecting section 60.
The test signal is transmitted from 0, the transmission lines 50 ₁ to 50 _n to be switched by the switching circuit 10 are selected by the selection unit 70, and the test signal is transmitted to the selected transmission lines 50 ₁ to 50 _n. It is inspected whether it is detected by the test signal detection unit 30. According to the present invention, the test signal transmitting section 20 and the test signal detecting section 30 do not require the number of the transmission lines, and the configuration is simplified.

[0009]

EXAMPLES Examples of the present invention will be described. No. 3 in FIG.
2 shows a switching device according to one embodiment. As shown in the figure,
This device uses n channels 4 which are transmission lines on the input side.₁~ 4
_nAnd n + 1 output side transmission line deer that is an output side transmission line.
N channels 5₁~ 5 _{n + 1}And the channel 4₁~
Four_nAnd the channel 5₁~ 5_{n + 1}Connections between
And a switching circuit 1 for performing. In addition, each channel 4
₁~ 4_nIs the switching of the switching circuit 1 normal?
A check signal that is a test signal for testing whether there is an abnormality.
A checker that sends a tone signal or check data.
Back tone transmitter 2₁~ 2_nAnd send the check tone
Output 2₁~ 2_nAnd each channel 4₁~ 4_nConnection between
Input side switch unit 8₁~ 8_nHave and.
Further, the channel 5₁~ 5_{n + 1}Check the above
Tone sending unit 2₁~ 2 _nWith the test signal sent from
Detection of certain check tone signals or check data
Check tone detection unit 3₁~ 3_{n + 1}And each channel
Le 5₁~ 5_{n + 1}And the check tone detection unit 3₁~ 3
_{n + 1}Output side switch unit 9 for connecting and disconnecting between₁~
9_{n + 1}Have and.

As shown in the figure, the switching circuit 1 has channels 4 ₁ to 4 _n on each input side and a channel 5 ₁ on each output side.
And a to 5 _n or each performing switching unit 1 ₁ to 1 _n switching between the channel 5 _{n + 1} on the output side.

In this example, the input side switch section 8₁~
8_nAnd output side switch section 9₁~ 9 _{n + 1}Is provided
It Therefore, turn it off only when you are going to test the switching.
The input or output channel that is the target of the replacement test.
Input side switch section 8₁~ 8_nAnd output side
Switch part 9₁~ 9_{n + 1}Only the connected state needs to be set.
For example, the switching route of the switching circuit for one channel is normally
If you are testing for formation,
Four₁And channel 5₁And switch part 1₁Connect by and before
Check tone sending unit 2₁Switch part 8₁Due to
Channel 4₁To the check tone detector 3₁
Switch part 9₁By channel 5₁Connect to. So
After that, the check tone transmitting unit 2₁From check toe
The check tone detection unit 3₁Choi
It is determined to be normal if the check tone signal is detected. next,
Channel 4₁And channel 5_{n + 1}Switch to connect with
1₁Switch. Similarly, send the check tone.
Output 2₁Send a check tone signal from the
Detection unit 3_{n + 1}Check tone signal is detected by
If this happens, the switching route for one channel will be formed normally.
Will be there. Because of this configuration, in this example
Is the check tone transmitter or check tone detector.
If the output part fails, you can easily disconnect it from the transmission line.
You can

Next, the second embodiment will be described.
In this example, unlike the first embodiment, each channel is
To the check tone transmitter 2 or the check tone detector
3 and switch section 8₁~ 8_n, 9₁~ 9_{n + 1}To provide
Instead of the channel on the input side, as shown in FIG.
Four₁~ 4_nInput side to select one channel from among
Selected by the selector 6 and the input side selector 6 concerned
The switching circuit 1 on the channel 4 is normal or abnormal
Check tone signal or check date
Check tone sending unit 2 for sending data, and the output side
Channel 5₁~ 5_{n + 1}Select one channel from
The output side selector 7 to perform and the output side selector 7
Selected channel 5₁~ 5 _nFrom inside to check tone
Check tone to detect signal or check data
The detection unit 3 is included.

Further, in this example, as shown in the figure, the switching units 1 ₁ to 1 _n provided in the switching circuit 1 are arranged.
A switching control unit 11 for controlling switching of the check tone, an instruction to send a check tone signal or check data to the check tone sending unit 2, and a check tone detecting unit 3
Test control unit 1 for performing test control such as collection of detection results by
2 and a result display unit 13 that displays the test result.

In this example, unlike the first example, when a switching test is to be performed, the test control section 12 instructs the switching control section 11 to participate in the switching to perform the test. The input side channels 4 ₁ to 4 _n and the output side channels 5 _{1 to} 5 _n , respectively.
And the selector 7 on the output side. The test control unit 12 gives an instruction to send the check tone signal or check data from the check tone sending unit 2 to the selected input side channels 4 ₁ to 4 _n , and the selected output side channels 5 _{1 to} 5 _{n. With +1} , the check tone detector 3 monitors whether or not the check tone signal or the check data is detected. As a result, when the test control unit 12 recognizes that the check tone signal or the check data is detected, it is determined that the switching is normal, and if the check tone signal or the check data is not detected, it is determined that the switching is abnormal. The result is displayed on the result display unit 13.

Next, a third embodiment will be described.
As shown in FIG. 5, this example is different from the second example in that the test control unit 14 is connected to the communication control unit 15 so that the test instruction to the test control unit 14 and the collection of the test result are performed. Test control is performed remotely by the console section 16 of the terminal through the line cable via the communication control section 15.

When controlling the test according to the present example, the test command is input from the console section 16, the test command is sent to the communication control section 15 through the line cable, and the communication control section 15 receives the test command. A test command is sent to the test control unit 14. The test control unit 14 checks whether it is a test command, and if it is a test command, it performs the test control as shown in the second embodiment. The subsequent operation is the same as in the first embodiment. After the test is finished, the test result received by the test control unit 14 is displayed on the result display unit 13, and the test result is notified to the console unit 16 via the communication control unit 15. As described above, in each of the embodiments, by incorporating the test signal transmitting unit and the test signal detecting unit in the switching device, the switching test can be performed quickly and easily. In the above example, each test signal is not limited to the same case, and each test signal may be different for each transmission path. Further, in the above example, the test signal transmission unit and the test signal detection unit are provided on different transmission lines, but both may be provided on each transmission line and may be selected and used as necessary.

[0017]

As described above, according to the present invention,
The switching device is provided with a test signal transmitting section or a test signal detecting section on each transmission line. Therefore, even with a switching device having a large number of transmission lines, it is possible to quickly and reliably inspect the switching device for abnormalities.

[Brief description of drawings]

FIG. 1 is a block diagram of the principle of the first invention.

FIG. 2 is a block diagram of the principle of the second invention.

FIG. 3 is a block diagram according to the first embodiment.

FIG. 4 is a block diagram according to a second embodiment.

FIG. 5 is a block diagram according to a third embodiment.

FIG. 6 is a block diagram according to a conventional example.

[Explanation of symbols]

10, 1 (1 ₁ to 1 _n ) switching circuit (switching unit) 20 _{1 to} 20 _m , 20 (2 ₁ to 2 _m , 2) test signal transmitting unit (check tone transmitting unit) 30 ₁ to 30 _{n + 1} , 30 (3 _{1 to} 3 _{n + 1} , 3) Test signal detecting unit (check tone detecting unit) 40 ₁ to 40 _m , 50 ₁ to 50 _n (4 ₁ to 4 _m , 5 ₁ ~)
5 _{n + 1} ) Transmission line (input side channel, output side channel) 60, 70 (6, 7) selection unit (input side selector, output side selector)

Claims (3)

[Claims] 1. Two or more transmission lines (40 ₁ to 40 _m , 50 ₁₎
˜50 _n ) and the transmission line (40 ₁ to 40 _m , 50 ₁ ˜)
In a switching device having a switching circuit (10) for switching the connection between 50 _n ), a test signal for testing a normal switching abnormality is sent to the predetermined transmission path (40 ₁ to 40 _m ). test signal transmitting section for performing (20 ₁ ~20 _m) provided on the other of the transmission paths (50 ₁ ~50 _n), the detection of the test signal sent from the test signal transmission unit (20 ₁ ~20 _m) A test method of a switching device, characterized in that a test signal detector (30 ₁ to 30 _n ) for performing the above is provided. 2. The predetermined transmission lines (40 ₁ to 40 _m ) are connected and disconnected between the transmission lines (40 ₁ to 40 _m ) and the test signal sending section (20 _{1 to} 20 _m ). the switch unit that performs provided, on each of the other transmission lines (50 ₁ to 50 _n), said channel (5
0 ₁ to 50 _n) and the test signal detector (30 ₁ to 30 _n) and the test method of the switching device according to claim 1, characterized in that a switching unit that performs connection and disconnection between. 3. Two or more transmission lines (40 ₁ to 40 _m , 50 ₁₎
˜50 _n ) and the transmission line (40 ₁ to 40 _m , 50 ₁ ˜)
In the switching device having a switching circuit (10) for switching the connection between the 50 _n), predetermined transmission path (40 ₁ to 40 _m) one or more transmission paths from the (40 ₁ to 40 _m ) Selection section (6)
0) and the transmission lines (40 ₁ to 40) selected by the selection unit (60).
_m) the switching circuit (10) for switching the test signal generating portion for sending a test signal for one of the test is normal or abnormal (20), the other transmission path (50 ₁ to 50 _n) selector for selecting one or more transmission paths (50 ₁ to 50 _n) from among (7
0) and a test signal detecting section (30) for detecting the test signal transmitted by the test signal transmitting section (20) for the transmission path selected by the selecting section (70). Switching device test method.