JP2696433B2 - Line test method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line test system for performing early separation and testing of a line in which communication has not been normally performed by using information including a reason indication transmitted in an integrated digital communication network. .

[0002]

2. Description of the Related Art An integrated digital communication network operates completely differently from a conventional analog public network and is processed on a D channel.

Therefore, when a failure occurs, it is necessary to install a protocol monitor device on an actual line and analyze signals on the D channel.

As described above, even in an integrated digital communication network, a test method for a line failure is known, and when a line becomes abnormal due to an exchange tester or a test stand on the network side, a person can use an exchange tester or a tester. Since he was operating the table, he had to diagnose with a limited amount of information such as audible sound to diagnose a line abnormality.

[0005]

In the above prior art, no consideration is given to the early isolation and the diagnosis method at the time of a line abnormality, and the cause is pursued with limited information. There was a problem that it took.

SUMMARY OF THE INVENTION An object of the present invention is to provide a line test method capable of isolating an abnormal line at an early stage due to unmanned operation and performing a detailed diagnosis of the cause of the abnormality.

[0007]

In order to achieve the above object, a circuit test method according to the present invention provides a reason display at the time of a circuit abnormality.
Connected via a trunk to a communication network that sends information containing
An exchange installed on the exchange side, the communication network and the
Detects a line error between exchanges and switches the line to the exchange
And a line test device for independent testing.
A line test method, wherein the line test apparatus
A means to determine if the line has failed
If this occurs, means to block the corresponding trunk
And analyze the contents of the reason indication included in the information,
The cause of the failure is on the communication network side or on the exchange side.
Means for determining whether or not the failure is on the communication network side
In this case, a call is made to the line that is
When monitoring the old system and recognizing failure recovery, the trunk
Means for releasing the blockage and the cause of the failure is on the exchange side
In this case, an initialization signal is sent to the trunk,
When recognizing restoration, release the trunk
Steps, and when the fault is restored, the line
Is housed in the exchange .

[0008]

According to the circuit test method of the present invention, information at the time of a line abnormality is extracted from information sent from a communication network, and the information is analyzed, and in the case of a minor failure, the content of the minor failure is stored in a memory. In the case of frequent or severe failures, the contents are stored in the memory, the corresponding trunk is closed, the line is disconnected from the exchange, and the circuit is diverted to another trunk.

[0009] The trunk disconnected from the exchange is independently tested by a circuit tester, and the cause is investigated for detailed reasons in the information sent from the communication network.
As a result of the investigation, if it is caused by the communication network, the status is monitored, and if it is confirmed that the communication network has been restored, the blocked trunk is released.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a circuit test system according to an embodiment of the present invention.

FIG. 1 is a block diagram showing the overall configuration. In FIG. 1, a telephone or a composite terminal 4 is accommodated in an exchange 2 accommodating a communication network 1 for transmitting information including a caller ID and a reason indication. 3 is provided. Further, a trunk 5 is connected between the communication network 1 and the exchange 2.

FIG. 2 shows the configuration of the line test apparatus 3. In FIG. 2, control information 6 including a caller number and a reason display is input from a communication network 1 to a line control monitoring unit 7.

Under the control of the central control unit 11, the line control monitoring unit 7 stores the fault information 8 including the reason indication in the fault content memory 9.
At the same time, the contents of the failure content recording memory 9 are counted under the control of the central control unit 11.

When the count value of the counter 10 exceeds a predefined count value, the central unit 11 analyzes the content, and as a result of the analysis, determines that the obstacle is on the communication network 1 side. Via the line control unit 13, a call is transmitted to the line in which the line abnormality has occurred, and it is confirmed whether or not the abnormality on the communication network 1 side has been recovered. Reference numeral 12 denotes a trunk blockage and blockage release signal output from the line control monitoring unit 7 to the exchange 2. Further, an initialization signal 14 is sent from the central control unit 11 to the trunk 5.

Next, the operation of the present invention will be described with reference to the flowchart of FIG. FIG. 3 is a flowchart showing the flow of the internal processing of the line test apparatus 3.

A trunk 5 for connecting the exchange 2 with the communication network 1 which sends out information including a caller ID and a reason indication.
In this case, the line is normally controlled normally, and the line test apparatus 3 confirms that the line control monitoring section 7 operates normally.

In this state, if the line is normal in step S1, the process proceeds to the end step from the NO side in step S1, and the processing routine ends.

If the line becomes abnormal at step S1, the line control monitor 7 extracts the reason indication sent from the communication network 1, and the process proceeds from the YES side of step S1 to step S2. In S2, the failure information 8 including the reason display is written to the failure content recording memory 9, and at the same time, the central control unit 11 is notified.

At step S3, the central control unit 11 determines whether the failure is a serious failure or a minor failure by looking at the contents of the failure. If the result of the determination is that the failure is minor, the process proceeds to step S4. It is searched whether or not the content has occurred in the previous time, and if not, the processing step branches from the NO side, proceeds to the end step, and the processing routine ends.

If it is determined in step S4 that there is an obstacle having the same content as the obstacle, then the process proceeds to step S4.
The process moves from the ES side to step S5.
At 5, the counter value of the count 10 of the fault content recording memory 9 is updated.

If the updated counter value does not exceed the value defined in advance, the process goes from NO in step S6 to an end step, and the processing routine ends.

If it is determined in step S6 that the counter value has exceeded the above defined value, the Y in step S6 is determined.
From the ES side, the process proceeds to step S7, and the same processing as the processing of the serious failure described below is performed.

In step S3, the central control unit 1
If it is determined that the failure is a serious failure as a result of the failure determination, first, in step S7, a trunk blockage signal 12 is transmitted to the exchange 2 for the corresponding trunk. This prevents invalid capture of the trunk 5.

Thereafter, the process proceeds from step S7 to step S8, in which the central control unit 11 reads out the contents of the failure content recording memory 9 and analyzes the reason for the failure.

If it is determined from the result of this analysis that the fault is on the side of the communication network 1 in step S9, a call is transmitted from the central control unit 11 to the faulty line via the line control unit 13 in step S10. It is confirmed whether the communication network 1 has been restored. If the result of this confirmation is that the communication network 1 has not been restored, the process branches off from the NO side in step S11 and returns to the processing in step S10.

If it is determined in step S11 that the communication network 1 has been restored, the process proceeds from the YES side of step S11 to step S12. 12 is sent to the exchange 2.

If it is determined in step S9 that the cause of the failure is on the exchange 2, the process proceeds from step S9 to step S13. In this step S13, the initialization signal 14 is sent to the trunk 5 concerned. Send out.

Thereafter, in step S14, the central control unit 11
Sends a call to the line in which the line abnormality has occurred via the line control unit 13, and checks in step S16 whether the trunk 5 has been restored. As a result of the confirmation, if the trunk 5 is restored, the process proceeds from the YES side of step S16 to step S12, and sends the block release signal 12 to the exchange 2 to the corresponding trunk 5.

If the recovery is not performed in step S16, the process proceeds from the NO side of step S16 to step S17, where the central control unit 11 autonomously sends a call to the pre-registered maintenance center via the line control unit 13. And report the details of the failure.

As described above, according to the present embodiment, by providing the line control monitoring unit 7, the central control unit 11, and the line control unit 13, it is possible to automatically detect the case where the communication is not normally performed, There is an effect that the line can be disconnected from the exchange 2 and the test can be performed independently. In the event of a failure, a detailed reason is recorded as information.

[0031]

As described above, according to the present invention, the line test equipment is installed on the exchange side, and when the line test equipment is abnormal, the line test equipment performs the early isolation at the time of independence, and the cause of the abnormality is described in detail. Is analyzed, so that even if a failure occurs, it is automatically detected, and the line is disconnected from the exchange to prevent invalid trunk seizure and bypass to another trunk.

Further, the separated trunk is again tested independently by the circuit test method of the present invention.
When the failure is recovered, there is an effect that the normal operation of the corresponding trunk can be performed again without manual operation.

Further, even if the faulty line cannot be recovered, the details of the fault are analyzed in detail, so that there is an effect that the maintenance person can easily diagnose the cause.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a line test system according to the present invention.

FIG. 2 is a block diagram showing an internal configuration of the line test apparatus of FIG.

FIG. 3 is a flowchart showing a flow of internal processing of the line test apparatus of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Communication network 2 Switch 3 Line test equipment 4 Telephone or compound terminal 5 Trunk 7 Line control monitor

Claims (1)

(57) [Claims] 1. Sending information including a reason indication at the time of line abnormality
An exchange connected via a trunk to a communication network
A line installed between the communication network and the exchange, installed on the exchange side
Detects an error and disconnects the line from the
A line test method equipped with a line test device for performing a vertical test
In the formula, the circuit test device includes means for determining whether a failure has occurred in the line, and, if a failure has occurred, closing a corresponding trunk.
Means for analyzing the contents of the reason indication contained in the information,
Is the cause on the communication network side or the exchange side?
Means for judging the failure and, if the cause of the failure is on the communication network side, the failure state
Outgoing line to monitor the restoration of the failure,
Upon recognition, means for releasing the blockage of the trunk, and if the cause of the failure is on the exchange side, the trunk
The initial setting signal is sent to the
Means for releasing the blockage of the trunk, and when the failure is recovered, the line is again automatically connected to the exchange.
A line test method characterized by accommodating .