User line and user circuit testing system and method

Abstract

The invention relates to a test system of user lines and user circuits and a method. The system includes a single chip, a relay test combination, a signal collection interface, an A / D conversion module, a CPLD, a benchmark power, and a serial port; when testing user lines, the system focuses on external wires; when testing user circuit, the system focuses on internal wires; the single chip receives test orders sent from a network management platform through the serial port, and carries out the corresponding test steps. Through the CPLD, the system connects user line or circuit with the relay test combination so as to test a plurality of items; at last, the single chip sends test results to the network management platform for maintenance personnel. With simple structure and complete functions, the system can be used for the tests of user line and user circuit at the same time.

Description

technical field [0001] The invention relates to the technical field of communication access network, in particular to a user circuit in the communication access network, a user circuit test system and a test method. Background technique [0002] In the prior art, for subscriber line testing methods, old methods include megohmmeter method, electric bridge method, sound playback method, leak detection method, pulse reflection method, etc. These methods are cumbersome to operate and labor-intensive; newer methods Among the methods, some use diodes and triodes to build circuits, and some use DSP technology, but they are all limited to the test of user line resistance. The detection of the voltage and the AC / DC voltage of the B line cannot detect the feed voltage, feed current, presence or absence of dial tone and ringing current of the user circuit. [0003] Subscriber lines will have line disconnection (open circuit), short circuit, poor line insulation, phone call and standby...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, for subscriber line testing methods, old methods include megohmmeter method, electric bridge method, sound playback method, leak detection method, pulse reflection method, etc. These methods are cumbersome to operate and labor-intensive; newer methods Among the methods, some use diodes and triodes to build circuits, and some use DSP technology, but they are all limited to the test of user line resistance. Voltage and B-line touch AC / DC voltage detection, and cannot detect the feed voltage, feed current, presence or absence of dial tone and ringing current of the user circuit

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