JPH0720180B2 - Circuit test method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention provides a line function test of a dedicated line such that a plurality of switches are centrally connected to a central unit via unmanned stations and manned stations. It relates to a line test method performed from a subscriber station line connected to.

[Conventional technology]

FIG. 3 is a conceptual diagram for explaining a schematic configuration of a conventional leased line test system according to the present invention.

As shown in FIG. 3, the conventional leased line test system of this type is a subscriber station corresponding to the exchange 4 when the maintenance person conducts a line test of the leased lines 6, 7, and 14 from the central station area 13. Line 8
A telephone that is connected to (for example, a push-type telephone)
The call is sent from 11, the central device 3 is connected, the line status is judged from the response from the central device 3 side, and the call back function test from the central device is performed. These tests are conducted for each exchange 4 for each leased line 14 and each local area code. Moreover, in the case of a station (for example, a specific exchange 4A) that collects a plurality of dedicated lines 14 and aggregates them into 1 / N, for example, each pair of the input side dedicated line 14 and the output side dedicated circuit 6 is tested. The aggregation device is a switch for the dedicated line 14 in FIG.
It may be provided at 4A or at the relay exchange 5 of the leased lines 6 and 7, and is usually provided at one place on the line.

Then, subscriber station lines (hereinafter abbreviated as station lines) 8 from a plurality of exchanges 4 are gathered in the center, and the leased line from this station line 8 is collected.
In order to prevent the problem that the connection for conducting a test to 6,7,14 (hereinafter abbreviated as a test call) is concentrated on the central device 3 and the response on the central device 3 side becomes difficult, In order to prevent the problem of squeezing the communication connection (hereinafter abbreviated as general call), the test calls are made uniform by staggering the time for each concentration area 13. In FIG. 3, reference numeral 5 is a relay exchange.

Then, the processing procedure of the maintenance person when the central device 3 does not respond or is busy is as follows.

(B) When there is no response from the central device.

Contact the circuit control station to inquire about the status of the central device 3,
As a result, if there is no other connection to the central unit 3, it is immediately judged as a failure, and the failure line number, line route, failure section, etc. are investigated and repaired.

If there is another connection to the central unit 3, the test is carried out again, and when it is judged to be good, the next test is carried out.

(B) When it becomes busy.

During line talk, while talking on the side of the central unit 3, it is possible that the dials are turned wrongly, so the test is performed again, or the state of the central unit 3 is inquired after judging that there is a failure. Which one is used is left to the maintenance personnel.

Further, the leased line aggregation device will be explained below.
The figure is a conceptual diagram for explaining the operation of the aggregation device that aggregates lines into 1 / N, and is shown as an example provided in the exchange 4A. As described above, the aggregating device may be provided for the dedicated lines 6 and 7, and the functions thereof are exactly the same. There are cases where the aggregation device is provided and cases where it is not provided. When it is provided, it is common to install it at one place (switch) in the line.

The maintenance person uses the telephone 11 connected to the exchange 4 via the office line 8 to perform a line test of the outgoing dedicated lines 6 and 7 through the incoming dedicated line 14 of the aggregation device 40. In this case, the priority of the outgoing-side dedicated line 6 is set in the aggregation device 40 in advance, and only the outgoing-side dedicated line 6 having the highest priority is connected and tested in one test from the incoming-side dedicated line 14. There is. In addition, to test all the outgoing line dedicated lines 6, the same number of telephones 11 as the outgoing line dedicated lines 6 can be tested at the same time, or the central device 3 side can complete the test for the line with the highest priority. With the line put on hold, the maintenance personnel then conducts a test from another telephone 11 and repeats this for the output side dedicated line 6 to test all the output side dedicated lines 6. .

[Problems to be Solved by the Invention]

However, the above-mentioned conventional line test method has the following problems.

Since the leased line 7 shown in FIG. 3 is constantly monitored separately by another device, redundant tests have been conducted on this portion.

Due to the large number of tests, the maintenance personnel and the operator at the central equipment side were labor intensive.

 Intervention on the side of the central unit was always necessary.

In the method of shifting the time zone for each central station, the test time zone cannot be freely set.

It takes more time and effort than necessary to judge a failure.

Further, the aggregation device 40 has the following problems.

When testing a low-priority outgoing leased line, the priority outgoing leased line must always be blocked or in use, so the line temporarily becomes full busy and normal calls are There is a risk of oppression.

Although careful attention and setting of the test time zone are required to solve the problems in the preceding paragraph, it is not perfect.

When conducting a line test on any dedicated line, all priority lines must be blocked.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a line test method that enables an efficient line test without requiring a response on the side of a central device.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention performs a line test of a dedicated line centrally connected to a central unit from a plurality of exchanges via unmanned stations and manned stations from a subscriber station line connected to the exchanges. In the line test method, control of the subscriber station line for enabling connection and remote control from the subscriber station line corresponding to the exchange, first device for starting the test at a plurality of set times, and communication line A second device that monitors and responds to the leased line and calls the central device side via the central device is installed via the telephone, and the switch is automatically exchanged when the test start instruction is received from the telephone or the setting switch or when the set time arrives. The main feature is to control the subscriber station line corresponding to, and to test the line function to the dedicated line.

In addition, a telephone for remote control is connected to the first device, and a line test of a dedicated line can be performed by an instruction of an individual test or an all-station automatic test from the telephone.

Furthermore, an additional device for setting the connection priority is provided in the line aggregation device, and the line test can be performed by sequentially changing the priority or arbitrarily setting it with a setting switch or the like.

[Action]

According to such a line test method, a line test of a dedicated line that is centrally connected from a plurality of exchanges to an unmanned station and a manned station in a central device is performed, and a subscriber station line connected to a plurality of exchanges is used. In this case, the first device 1 sets and controls one of the office lines corresponding to the exchange, while the second device 2 monitors the leased line to start the test or temporarily suspend the test with the first device. Proceed with the line test by sending instructions and responding before the central unit. By performing this for each subscriber station line corresponding to the exchange, it is possible to test the leased line accommodated by multiple exchanges, and the response from the central unit is unnecessary for the test call only for the line test. , It is possible to perform an efficient line test.

Also, when the first device accommodates a subscriber station line for enabling remote control, and a general push-type telephone is connected to this, the first device responds to this and confirms the telephone. . If the two match in this confirmation, an instruction for either an individual test or an all-station automatic test is received from the telephone, and in the case of an individual test, station line designation, on-hook state, off-hook state, central device or second device By controlling the incoming call and the call connection between the subscriber station line connected to the first device and the subscriber station line connected to the exchange, a call between the telephone and the central device is possible and the remote controller Monitor on-hook and disconnect. In the case of the all-station automatic test, connection control is automatically performed, and when the test from all the station lines is completed, it is stopped. When a failure is detected, the line is held and the maintenance person is notified.
If the confirmations do not match, forced recovery is performed after a certain period of time. By doing so, it is possible to perform an efficient line test without requiring a response from the central device side.

Further, when the incoming dedicated line is connected to the centralizing device by the additional device provided in the centralizing device, the line is sequentially changed in priority and connected to the outgoing dedicated line, or the setting switch or remote It is connected to the highest priority outgoing leased line specified by the control terminal. Then, when a failure occurs in the additional device, the additional device is disconnected and the connection state is restored to the conventional one. By doing so, the line test can be performed by connecting only the dedicated line required for the test, and the extremely efficient line test can be performed.

〔Example〕

An embodiment of the present invention will be specifically described below with reference to the drawings.

In all the drawings, those having the same function are designated by the same reference numeral, and the repeated description thereof will be omitted. FIG. 1 is a conceptual diagram for explaining a schematic configuration of a leased line test system of an embodiment according to claims 1 and 2 of the present invention.

As shown in FIG. 1, the leased line test system of this embodiment includes a first device 1 for controlling a station line 9 for enabling connection and remote control from a station line 8 corresponding to an exchange 4, A second device 2 for monitoring, answering, and calling the central device side is provided in front of the central device 3 via a communication line 10 and is connected to an exchange 5 for relaying.

The first device 1 is connected to a dedicated line 6 via a subscriber station line control unit 21, a plurality of station lines 8 and an exchange 4, and a remote control unit 22 and a station line 9 for enabling remote control. Switch 4A
Is connected to the dedicated line 6 via.

That is, the first device 1 receives a test start instruction from the telephone (remote controller) such as a general push-type telephone or the command setting switch 26 or the time activation control unit 28 at the command control unit 25, and controls the subscriber station line. The office line 8 corresponding to the exchange 4 is controlled via the unit 21, and the connection to the leased lines 6 and 14, the response, and the call back function test are performed, and the results are displayed on the display unit 27 of the first device 1, the printer 15 and the printer 15. The display and output are performed on the display unit 35 and the printer 16 of the second device 2 so that the dedicated lines 6 and 14 can be efficiently tested.

Further, the first device 1 receives the test start information from the command setting switch 26 or the test start information from the time start control unit 28 due to the arrival of the time set by the time start setting switch 29, and receives the station line 8 In contrast, the subscriber station line control unit 21 that detects the transmission of dialed number information, the reception of a call back signal, and the reception of a voice signal and reports them to the command control unit 25 is distinguished from the telephone or the remote controller operating the telephone. Collation switch 23, a remote control unit 22 that responds to the central line 9, reports the judgment of the telephone and the control command from the telephone to the command control unit 25, and informs the telephone of that fact by an audible sound, and the central line 8 End detection unit 24 that detects the maximum number of
And a command control unit 25 that receives the command information, monitors and controls each control unit, and transfers the control command information to the second device 2 via the communication line 10, and a display unit 27 that displays and outputs the leased line test result. And a printer 15.

A second device 2 for monitoring and responding to the plurality of leased lines 6 and 7 and a communication line 10 are provided.

The second device 2 monitors the line setting unit 30 that sets the control line 12 based on the control information transferred from the first device 1 via the communication line 10, and the dedicated line 6 to check the line status. A line control unit 32 that reports to the command control unit 33 and responds according to the control command to judge a general call and a test call. When the call answered by the line control unit 32 is a general call, the dedicated line 6 is held and the central line is held. Device 3
The first device 1 receives the input of the test start information from the central device control unit 31 that makes a call from the user side and detects the response to enter the call state, the display unit 35 that displays the test state, and the command setting switch 34. The transfer control, the monitoring of each control unit, and the command control unit 33 that transfers the waiting timing instruction to the first device 1 when the dedicated line 6 is in full talk and the printer 16 that outputs the test result.

Next, in the case of (a) continuous test, the operation of this embodiment is (b)
A single test from a telephone (remote controller), (c) a continuous test from a telephone (remote controller), and (d) a connection test with a central device will be described separately with reference to FIG.

(A) In the case of continuous test The command control unit 25 of the first device 1 switches from the command setting switch 26 to
Alternatively, the time start switch 29 receives a control start command from the time start controller 28 each time a plurality of preset times arrive. Upon receiving this instruction, the instruction control unit 25 transfers the youngest number setting instruction to the subscriber station line setting unit 21. In response to this, the lowest number of the plurality of subscriber station lines 8 is selected and set. Further, the command control unit 25 calls the second device 2 via the communication line 10. In the second device 2, a plurality of first devices
The command control unit 33 receives the call from the device 1 and responds to the call, and the command control unit 33 receives the control information from the first device 1. The corresponding signal and the designation instruction of the control line 12 are sent to the line setting unit 30. Forward. The line setting unit 30 is the designated control line.
Make 12 settings.

Next, when the command control unit 33 transfers the line monitoring instruction to the line control unit 32, the line control unit 32 causes the dedicated line 6 and the dedicated line 7 to operate.
Line monitoring is performed, and the command control unit 33 is notified of the availability of the dedicated lines 6 and 7 to be connected. Hereinafter, description will be made assuming that there is a space. The command control unit 33 notifies this to the command control unit 25 of the first device 1 and transfers the connection start instruction to the subscriber station line control unit 21. Upon receiving this connection start instruction, the subscriber station line control unit 21 puts the set subscriber station line 8 in the off-hook state, confirms the caller (DT) from the station line 8,
Next, the dialed number information is transmitted to the central office line 8, and the report and the next ringing tone (RBT) are immediately confirmed. On the other hand, the line control unit 32 puts the relay device 5 corresponding to the idle lines of the leased lines 6 and 7 in the hold state and connects the test call. The subscriber station line control unit 21 confirms the ringing tone and reports it, and when the command control unit 25 receives it, it transfers the response instruction to the line control unit 32. In response to this, the line control unit 32 continues to respond to the connection call and confirm the test call, and reports to the command control unit 33 each time, and in the case of a general call, sends back to the central device control unit 31. Request processing. Central device control unit 31
Holds the leased line 6 to which the line setting unit 32 responded first,
In response to this, the central unit 3 is called via the dedicated line 7, the response of the central unit 3 is detected, and the dedicated lines 6 and 7 are connected.
To put the call in the call state and release the line hold.

In the case of a test call, the line control unit 32 releases the hold of the relay exchange 5 and notifies the first device 1 of the hold. The command control unit 25 transfers the on-hook instruction to the subscriber station line control unit 21 and the reverse call instruction to the line control unit 32, and the subscriber station line control unit
Receive a report from 21.

Next, the call test instruction is transferred, the same report is received, the station line release instruction and the restoration instruction are transferred to the second device 2, and after confirming this, the command control unit 25 confirms that one subscriber station line 8 has The fact that the process has been normally completed is accumulated and then output to the printer 15. On the other hand, also in the second device 2, the storage in the command control unit 33 and the output to the printer 16 are similarly performed.

Further, the command control unit 25 transfers the next younger number setting instruction to the subscriber station line control unit 21, and repeats the above operation. During this time, the information reported to the command control unit 25 is displayed on the display unit 27 and the display unit 35 at any time.
Is displayed in.

Also, in the above explanation, when all the dedicated lines 6 and 7 are busy,
Upon receiving the report from the line setting unit 30, the command control unit 33
The system waits for the device 1 and transfers the timing instruction to recover. In addition, the first device 1 receives this, waits for the timing, and calls the second device again. Furthermore, the termination detection unit 24 detects the oldest numbered station line 8 set by the subscriber station line control unit 21, reports it to the command control unit 25, and all the devices are restored.

(B) Single test from telephone (remote controller) The remote controller of the telephone makes an incoming call to the telephone number given to the central line 9 from the push-type telephone. The remote control unit 22 of the first device 1 detects this, responds, and informs the remote controller by an audible sound. Next, the dialed number information sent from the remote controller is compared with the collation switch 23 to determine whether or not the remote controller. If they do not match within a certain period of time, the remote controller is notified of this by an audible sound, the station line 9 is opened, and subsequent commands are ignored. If they match, it is reported to the remote controller as an audible sound and input to the command control unit 25.
Upon receiving the station line number and the start instruction from the remote controller, this is input to the command control unit 33 to start the control of only one item (a) and notify the test result. When an on-hook condition from the remote controller is detected, this is reported and the condition is restored.

(C) Continuous test from the telephone (remote controller) The individual test of the above item (b) is performed in the order of youngest number of the station line 8, and the oldest number is terminated and stopped.

(D) Connection test with central device This test is for directly connecting to the central device 3.
Upon receiving a station line number and a start instruction corresponding to the exchange 4 from the remote controller, the central station 3 is connected and the subscriber station line 9 and the subscriber station line 8 are connected to each other. This is a test that enables the device 3 to talk.

The above is the description of the embodiments according to claims 1 and 2 of the present invention. Next, an embodiment according to claim 3 of the present invention will be described with reference to FIG.

FIG. 2 is a block configuration diagram for explaining a main part configuration of an embodiment according to claim 3 of the present invention, and the entire leased line test system is the same as FIG. Further, FIG. 2 shows an example in which the aggregation device 40 provided in the exchange 4A of FIG. 1 (FIG. 4) is provided with the additional device 50.

In the example of FIG. 2, the aggregating device 40 receives n dedicated lines 14 from a plurality of exchanges 4 and aggregates them into n outgoing private lines 6 and 7. In the figure, 50 is an additional device of the aggregation device 40, 45 is a control line that connects the aggregation device 40 and the additional device 50, 51 is a line switching unit that connects and disconnects the additional device 50, and 52 is a line switching unit 51. A line control unit for activating the output side dedicated lines 6 and 7 from the aggregation device 40 via the control line 45, 53 is a line designation switch for setting the line designation number of the output side dedicated lines 6 and 7, and 54 is a remote A remote control terminal for connecting an office line for control from the ground, 55 is an exchange 4 via the line switching unit 51.
A start signal receiving unit that monitors a start signal from the device, 56 sets and monitors the line control unit 52, and a control monitoring unit that instructs the line switching unit 51 to disconnect the additional device 50 when an abnormality occurs, 57 is a line designating section that controls the designation of outgoing private lines 6 and 7, 58 is a final switch that sets the final line number value of outgoing private lines 6 and 7, and 59 is the line designation notified from the line designating unit 57. A display unit for displaying the number value, and 60 is a remote control receiving unit for receiving the line designation number from the remote control terminal 54 and notifying the line designation unit. Also, the line designating unit 57 receives the notification from the activation signal receiving unit 55, adds 1 to the current setting value, compares the added value with the value set in the final switch 58, and the added value is If it is small, the line control unit 52 is notified of the value, and if the added value is large or the same value, the setting value is set to the minimum value and the value is notified to the line control unit 52. At this time, the set value is also notified to the display unit 59. Also, the line control unit 52 is notified of the line designation number from the line designation switch 53 and the remote control reception unit 60. The remote control terminal 54 may be commonly connected to the subscriber station line 9 shown in FIG. You can

In the additional device 50, the line switching unit 51 is connected to the aggregating device 40 by the control line 45, and the line switching unit 51 causes the activation signal receiving unit.
It is connected to the line designating unit 57 via 55. The line designation unit 57 is connected to the line switching unit 51 via the line control unit 52, the remote control terminal 54 is connected to the line designation unit 57 via the remote control receiving unit 60, and the line designation switch 53 and the final switch 58 are connected. The display unit 59 is connected to each. Further, the control monitoring unit 56 is connected to the line switching unit 51 and the line control unit 52.

That is, the add-on device 50 receives the calling signal from the subscriber station line 8 selected by the first device 1 at the aggregation device 40 via the exchange 4 connecting the subscriber station line 8 and the dedicated line 14. . This signal is received by the activation signal reception unit 55 as an activation signal, and the fact is notified to the line designation unit 57. In response to this,
In the line designation section 57, set the priority of the outgoing leased line,
The line control unit 52 is notified of the set value. Line control unit 52
Sets the outgoing line number of this setting to the highest priority, sends it to the aggregation device 40 via the line switching unit 51 and the control line 45, and receives the start signal, the incoming dedicated line 14 and the highest priority number. Connect to the private line on the outgoing side of. Further, the control monitoring unit 56 is the line control unit 52.
The setting monitoring is always performed, and when an abnormality occurs in the setting or the like, the line switching unit 51 is operated to disconnect the additional device 50. When the additional device 50 is connected, the priority of the aggregation device 40 is ignored, while the other additional device 50
When is disconnected, the output side private line is connected according to the priority of the aggregation device 40.

Next, the operation of the embodiment shown in FIG. 2 is performed by the line rotary function (the function of changing the priority of the outgoing private line every time it is activated from the incoming private line to uniformly activate all outgoing private lines. ), Line designation function (a function that allows you to specify the activation of the output side dedicated line by changing the priority of the output side dedicated line according to the instruction from the line designation switch 53), remote designation function (control signal from the remote Function to receive and specify output side dedicated line), automatic switching function (line control unit 52)
Function that automatically returns to the function of the existing aggregation device 40 and disconnects the function of the additional device 50 when a failure condition is detected)
Will be described below.

Line rotary function When an activation signal arrives at the entrance side of the aggregation device 40 from the exchange 4 via the dedicated line 14, the activation signal is drawn into the line switching unit 51 via the control line 45. Further, this activation signal is detected by the activation signal receiving unit 55, and that fact is notified.
It is sent from 55 to the line designation unit 57. Upon receiving this transmission, the line designating unit adds 1 to the current line designating number and compares the value after the addition with the value set in the final switch 58. As a result of the comparison, if the added value is small, the added value is sent to the line control unit 52. On the other hand, if the value after addition is large or the same, the set value is set to the minimum value (the smallest number of the outgoing side dedicated line) and this value is sent to the line control unit 52. The line control unit 52 sets the outgoing dedicated line of the value received from the line designating unit 57 to the highest priority, and activates the corresponding outgoing dedicated line of the aggregation device 40 via the line switching unit 51 and the control line 45. Then, the previous incoming line and this outgoing line are connected.

This operation is repeated every time the activation signal is received from the incoming dedicated line 14 of the aggregation device 40.

Further, the line designating unit 57 sends the set value to the display unit 59 and displays it.

Line designating function The priority of the above items is arbitrarily set by inputting and setting the line designating number from the line designating switch 53.

That is, the highest priority number of the outgoing dedicated line from the aggregation device 40 is arbitrarily input from the line designating switch 53. This number value is sent to the line designating unit 57, and when the line designating unit 57 receives from the activation signal receiving unit 55 that there is activation from the incoming dedicated line, the line designating unit 57 sends the number value sent from the line designating switch 53 to the line designating unit 57. It is sent to the control unit 52. The subsequent operation is the same as the above item.

As a result, the line test can be performed by arbitrarily setting the priority order of the outgoing side dedicated line.

Remote designation function The priorities of the above items are set by input from the remote control terminal 54.

That is, for example, the line designation number from the remote controller transmitted from the telephone set or the like to the exchange 4A is received by the remote control receiving unit 60 via the remote control terminal 54. The line designating number received by the remote control receiving unit 60 is sent to the line designating unit 57, and thereafter, this number is set as the highest priority of the outgoing side dedicated line and operates in the same manner as in the above item.

In this case, by connecting the subscriber station line 9 connected to the first device 1 and the remote control terminal 54 in common, the first device 1
It is possible to combine the remote control of and the remote designation function of the additional device 50.

Automatic switching function The control and monitoring unit 56 constantly monitors the line control unit 52 during the operations of the above items 1 and 2, and when an abnormality is detected, the line switching unit.
An instruction signal is sent to 51 to disconnect the additional device 50. Upon receiving this instruction signal, the line switching unit 51 disconnects the additional device 50 from the control unit 45. This allows the aggregator 40
Returns to its traditional functionality.

The above is the description of the embodiment according to claim 3 of the present invention.

As can be seen from the above description, according to the present invention, when the dedicated lines 6 and 14 that are centrally connected to the central device 3 are tested from a plurality of exchanges 4 via unmanned stations and manned stations, a plurality of A test call for testing the leased lines 6 and 14 from the subscriber station line 8 corresponding to the exchange 4 and a line test method for answering in front of the central unit 3 and testing the leased lines 6 and 14 At the station line 8 corresponding to the exchange 4
A first device 1 that sets and controls individual devices, and a second device that monitors the leased lines 6 and 7 and sends a test start or test temporary queuing instruction to the first device 1 and responds before the central device 3 2 is installed, the dedicated lines 6 and 7 are tested, and by performing this for each station line 8 corresponding to the exchange 4, it is possible to test the dedicated lines 6 and 14 in which a plurality of exchanges 4 are accommodated, The response on the side of the central device 3 to the test call only for the line test is unnecessary, and an efficient line test can be performed.

Also, when an aggregation device is provided in a station on the line of the line, by connecting an additional device for changing the priority of the outgoing private line to this aggregation device, the priority setting can be selected, In addition, it is possible to arbitrarily specify, suppress general telephone calls, and perform an efficient line test that can make the outgoing lines uniform.

In addition, since the tests that have been repeated so far can be performed in one test, the labor of the maintenance person and the operator of the central apparatus 3 can be reduced.

Further, since it is not necessary to shift the time zone for each central station, the test time zone can be freely set.

Further, since it is possible to shorten the time until the failure is determined, it is possible to shorten the repair time of the failure.

The present invention has been specifically described above based on the embodiments,
It is needless to say that the present invention is not limited to the above-mentioned embodiments and can be variously modified without departing from the scope of the invention.

〔The invention's effect〕

As described above, according to the present invention, the response of the central device to the test call is unnecessary, and the priority of the outgoing line in the centralizing device can be set arbitrarily, and the test efficiency of the dedicated line can be improved. Can be greatly improved.

This prevents duplicated tests, eliminates the need for tests that take time zones into consideration, and eliminates the need for response from the central device, thus shortening the time required for line tests, etc. There is an effect that can be significantly shortened.

[Brief description of drawings]

FIG. 1 is a conceptual diagram for explaining a schematic configuration of a line test system according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a main part for explaining another embodiment of the present invention, and FIG. Is a conceptual diagram for explaining a schematic configuration of a conventional line test system,
The figure is a conceptual diagram for explaining a conventional aggregation device. 1 ... First device, 2 ... Second device, 3 ... Central device, 4,
4A ... Switch, 5 ... Relay device, 6,7,14 ... dedicated line,
8,9 …… Subscriber station line, 10 …… Communication line, 12 …… Control line, 1
5,16 ...... Printer, 21 ...... Subscriber station line control unit, 22 ...... Remote control unit, 23 ...... Verification switch, 24 ...... End detection unit, 25
...... Command control unit, 26,34 …… Command setting switch, 27,35…
… Display, 30 …… Line setting, 31 …… Command board control, 32
...... Line control unit, 33 …… Command control unit, 40 …… Aggregator,
45 …… Control line, 50 …… Additional device, 51 …… Line switching unit, 52
...... Line control unit, 53 ...... Line designating switch, 54 ...... Remote control terminal, 55 ...... Startup signal receiving unit, 56 ...... Control monitoring unit,
57 …… Line designator, 58 …… Final switch, 59 …… Display, 60 …… Remote control receiver.

Claims (3)

[Claims] 1. A line test system for conducting a line test of a dedicated line centrally connected to a central unit from a plurality of exchanges via unmanned stations and manned stations from a subscriber station line connected to the plurality of exchanges. In the above, in the first device for controlling the subscriber station line for enabling connection and remote control and time starting control from the subscriber station line corresponding to the plurality of exchanges, and the central device via the communication line. Monitoring the dedicated line in front,
A second device for answering and calling the central device side is provided, and a test start instruction is received from the telephone, the setting switch, or the time activation control unit, the subscriber station line corresponding to the exchange is controlled, and the dedicated line to the dedicated line is connected. A line test method characterized by performing a line function test. 2. The first device accommodates a subscriber station line for enabling remote control, and a general telephone is connected to this, and the first device responds to this to confirm the telephone. If they match, an instruction for either an individual test or an all-station automatic test is received from the telephone, and in the case of an individual test, the subscriber station line designation to the exchange, the on-hook state, the off-hook state,
By controlling the incoming call to the central device or the second device and the call connection between the subscriber station line to the telephone and the subscriber station line to the exchange, it is possible to connect the telephone to the central device. , Monitoring the on-hook of the phone and disconnecting,
Also, in the case of automatic testing of all stations, connection control is automatically performed, stopping when the test from all station lines is completed, holding the line when a failure is detected and notifying the maintenance person, and if the above confirmation does not match, it is constant The line test method according to claim 1, wherein forced recovery is performed after a lapse of time. 3. A line test of a dedicated line centrally connected to a central device via an unmanned station and a manned station including a station having a line aggregation function from a plurality of exchanges is connected to the plurality of exchanges. In the line test method performed from the subscriber station line,
An additional device for setting the connection priority of the output-side dedicated line is provided in the aggregation device that performs the aggregation function, and after the input-side dedicated line is connected to the aggregation device, it is sequentially changed to set the highest priority, or By setting the highest priority by setting from the setting switch or the remote control terminal, the incoming dedicated line is connected to the outgoing priority dedicated line with the highest priority and a line test of the dedicated line is performed. The line test method is characterized in that, when a problem occurs, it is disconnected from the aggregating device.