JPS61278250A - Fault locating system of crossbar telephone exchange - Google Patents

Abstract

PURPOSE:To execute easily the maintenance independently of the experience of a maintenance personnel and degree of knowledge by analyzing a fault based on the operating state of an exchange controller at each possible cause of fault stored in advance by a microcomputer. CONSTITUTION:If a fault takes place during the operation of a dial tone marker DM1 or a connection marker CM2, the operating state is transferred to the microcomputer 5 via an adaptor 4 in a fault locating computer system 3. The microcomputer 5 receives the operating state of the marker 1 or 2 and a fault classification such as a heavy or light fault altogether via the adaptor 4. Then the content of fault or a fault location are analyzed based on the stored fault cause stored in advance and if the fault is a heavy fault, the result of analysis and processing for repair are commanded to the maintenance personnel via a printer 6 or a CRT display 7 immediately and stored in an external storage device 2.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention generally relates to a maintenance method for a crossbar type telephone exchange, and in particular, the present invention relates to a maintenance method for a crossbar type telephone exchange, and in particular, when a failure occurs, the exchange control device transfers the operating status to a failure recorder. This invention relates to a fault search method that automatically analyzes the content and location of the fault using a microcomputer based on the transferred information, and instructs maintenance personnel to repair the fault.

(Prior art) Conventionally, in analyzing the details and location of a fault in a crossbar-type telephone exchange, maintenance personnel visually check the operating status of the exchange control device when a fault is encountered using a fault record sheet recorded by a fault recorder. They read the information and performed reasoning analysis by referring to circuit diagrams and operation diagrams.

(Problems to be Solved by the Invention) The conventional fault detection method described above is highly dependent on the experience of the maintenance person, and requires a considerable amount of knowledge and experience from the maintenance person. Some people may make mistakes in searching for obstacles due to lack of knowledge or experience.
Or maintenance work is not efficient, such as repair cannot be done in a short time.
There was a drawback that it could not be implemented.

SUMMARY OF THE INVENTION An object of the present invention is to provide a statistical fault detection method for a crossbar type telephone exchange using a microcomputer, which eliminates the above-mentioned drawbacks.

(Means for Solving the Problems) The statistical fault detection method for a crossbar type telephone exchange according to the present invention can be applied to a microcomputer and a printer.

Peripheral devices such as CRT displays and external storage devices.

An additional device for connecting the exchange and a microcomputer and a failure analysis program are used to check the operation status of the exchange control device when a failure occurs from the exchange control device for each failure case stored in advance in the microcomputer. It is configured to have the function of analyzing the operating status and instructing the maintenance person on the details of the failure, the location of the failure, and the measures to be taken for repair.

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

The drawing is a block diagram showing one embodiment of the present invention.

In this embodiment, the crossbar type switch 10 uses a C400 type. In the figure, when a dial tone input (DM) 1 or a connection marker (CM) 2, which is an exchange control device, encounters a failure during operation, an additional device 4 in a computer system 3 for troubleshooting detects the operational status at that time. After the data is transferred to the microcomputer 5 via the dial tone marker 1 or connection marker 2, the dial tone marker 1 or connection marker 2 is restored and ready for the next connection operation. The microcomputer 5 is connected to the marker 1 or 2.
The operating status of the system and the fault classification such as serious fault or minor fault are received via the additional device 4, and the fault contents and fault location are analyzed based on the fault cases stored in advance. Immediately, the analysis result and repair measures are instructed to the maintenance personnel through the printer 6, CR, and T display 7, and the data is stored in the external storage bag ft8. If the failure is a minor failure, the analysis results are stored as they are in the external storage bag f8. The analysis results are stored for each device in the external storage device 8, and the maintenance person can output the details of the failure of each device as needed, and in this way can perform maintenance work efficiently.

(Effects of the Invention) As explained above, the present invention enables maintenance work to be easily performed without being affected by the level of experience and knowledge of the maintenance person by automatically searching for faults in crossbar type switching equipment using a microcomputer. There are effects that can be implemented.

[Brief explanation of drawings]

The drawing is a block diagram of a fault detection method for a crossbar type telephone exchange using a microcomputer according to the present invention. 1...Dial tone marker, 2...Connection marker, 3...Failure i-tree computer system, 4...
・Additional equipment. 5...Microcomputer, 6...7' lifter, 7...CRT display. 8...External storage device, 10...Crossbar type built-in switch.

Claims (1)

[Claims] A microcomputer monitors the operating status of the switchboard when a fault occurs from the crossbar type telephone switchboard control device.
A fault detection method for crossbar-type telephone exchanges is characterized in that it compares with pre-recorded fault cases, automatically analyzes and searches for the content and location of the fault statistically, and instructs maintenance personnel to repair the fault.