JPH01120945A - Subscriber line fault point detection system - Google Patents

Abstract

PURPOSE:To quickly detect a faulty point of a subscriber line by storing a test data of a subscriber line at normality and comparing the data with a test data measured in accepting a complaint from the subscriber. CONSTITUTION:The line state of a subscriber line 5 connecting to a subscriber 1 in advance, that is, resistance and capacitance or the like are measured from a terminal equipment 7 via a subscriber test equipment 6, a channel switch 3, a subscriber tent equipment 4 and a subscriber circuit 2 in opening an exchange station and they are stored on a magnetic tape device 10 as the test data at the normal state. If a complaint comes from the subscriber 1 in the service state, the test data at the normal state of the corresponding subscriber line 5 is read and displayed on a terminal equipment 7 via a magnetic tape controller 9 and a central controller 8 from the magnetic tape device 10. On the other hand, the test data at fault state is obtained from the terminal equipment 7 the same as the normal state.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a subscriber line failure point detection method.

[Conventional technology]

Traditionally, when testing subscriber lines, measurement data is not stored;
The quality of subscriber lines is judged based on complaints from subscribers.

[Problem that the invention seeks to solve]

Therefore, it is not possible for the person accepting the complaint to determine at the time of the complaint from the subscriber at which point the failure is occurring, and it takes time for recovery to occur.

[Failure to solve the problem]

The subscriber line failure point detection method of the present invention stores the subscriber line test data during normal operation, obtains the subscriber line test data at the time of failure, compares it with the stored test data during normal operation, and detects the failure point. This is a configuration that detects.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

Referring to the diagram showing an embodiment of the present invention, when opening an exchange, the line condition of the subscriber line 5 connected to the subscriber 1, that is, the resistance value, the capacitance value, etc., is tested by the subscriber from the terminal equipment 7. Device 62 call switch 3. The data is measured via the subscriber test device 4 and the subscriber circuit 2 and stored in the magnetic tape device 10 as normal test data. In the service state, when there is a complaint from subscriber 1, what is the test data of the corresponding subscriber line 5 when it is normal? The data is read out from the magnetic tape device 10 to the terminal device 7 via the magnetic tape control device 9 and the central peel control device 8 for display. On the other hand, test data at the time of failure is obtained from the terminal device 7 in the same manner as at normal times. Since the resistance value and capacitance value indicating the line condition of the subscriber line 50 are uniquely determined by the line length K, it is possible to detect the fault point by comparing the test data during normal and fault conditions. can.

〔Effect of the invention〕

As explained above, according to the present invention, the test data of the subscriber's line during normal operation is stored, and when a complaint is received from the subscriber, the failure point of the subscriber's line is identified by comparing it with the measured test data. Can be detected quickly.

[Brief explanation of the drawing]

The figure is a configuration diagram showing an embodiment of the present invention. 1...Subscriber, 2...Subscriber circuit, 3
...Telephone switch, 4...Subscriber testing device, 5...Subscriber line, 6...Subscriber testing device, 7...・Terminal device, 8...
Central control unit, 9...Magnetic tape control unit. 10...Magnetic tape device. Agent Patent Attorney Susumu Uchihara

Claims (1)

[Claims] A subscriber line fault characterized in that subscriber line test data during normal times is stored, subscriber line test data during failures is obtained and compared with the stored test data during normal times, and a fault point is detected. Point detection method.