Trunk state detecting method, device and testing information terminal equipment thereof

Abstract

A method for detecting state of relay line includes emitting test information by relay line to be detected, receiving detour test information from terminal end of said test information, comparing said test information with detour test information to see whether contents of two said test information are consistent to each other or not and confirming that fault is occurred on relay line to be detected when comparison result is not consistent to each other. Another method for detecting state of relay line is also disclosed.

Description

technical field [0001] The invention relates to line state detection technology in the communication field, in particular to a relay line state detection method, device and test information terminal equipment thereof. Background technique [0002] During the operation of traditional switching equipment based on pulse code modulation (PCM, Pulse Code Modulation), due to the physical characteristics of the E1 connection used for external relay transmission, it is more prone to conduction faults due to incorrect physical connection connections . [0003] Among them, the failure of the mandarin duck line is a kind of failure of the external trunk line of the call single-way due to the wrong connection of the physical connection. The so-called mandarin duck line fault refers to the line fault that occurs when the receiving or sending lines of two or more PCM lines are cross-connected. [0004] As shown in Figure 1, it is a schematic diagram of the correct connection of the PCM ...

AI Technical Summary

Problems solved by technology

However, if you accidentally connect the receiving line of PCM line A with the sending line of PCM line C, or connect the sending line of PCM line A with the receiving line of PCM line C, the user's call ticket will be caused. This kind of connection failure is the mandarin duck line failure, as shown in Figure 2

[0005] The inventor of the present application found that in the large-scale wiring application of the communication network, it is necessary to connect thousands of PCM connections, but it is often caused by human negligence, which often leads to the failure of the mandarin duck line

Because the external trunk line with mandarin duck line fault appears to be normal in physical state, it cannot be shown as E1 fault, so some signaling protocols or status self-tests suggested by the signaling protocol cannot be realized in the routine maintenance process. way to detect

Only when the network management staff receives the user's complaint and calls for one-way communication, it is possible to detect the PCM line connection with the failure of the mandarin duck line through the relay dial test function to test the PCM line connection. This method is based on manual operation. For large-capacity switching offices, the workload will be huge, resulting in low troubleshooting efficiency and accuracy

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