Method and device for detecting signalling No.7 channel based on E1

Abstract

The invention discloses a method and a device for detecting a signalling No.7 channel based on E1, comprising the following steps: S1. an E1 inputting and collecting step: collecting multi-path E1 input signals with signalling No.7; S2. a step of connecting pulse code modulation (PCM) in crossing manner: carrying out timelot cross connection on the multi-path E1 input signals; S3. a high level data link control (HLDL) channel timeslot detection step: the timeslot channel detection of the crossed obtained signal; and S4. an E1 output sending step: converging the detected effective signalling No.7 channel timeslot to an output port. The invention also discloses a device for realizing the method. As the method and device finish the convergence of the signalling No.7 from input to output, thus the condition that the error possibly appear in HDLC channel parameters of manually configured collection equipment can be avoided, and the E1 interface resources of the collection equipment also can be saved. As the practical detection method and device, the method and the device in the invention can be widely applied to a signalling No.7 monitoring system.

Description

technical field [0001] The invention relates to a communication signal detection technology, in particular to an E1-based No. 7 signaling channel detection method and a device implementing the method. Background technique [0002] SS7 is also called common channel signaling. That is, the signaling method of transmitting a group of voice channel signaling on a high-speed data link in a time-division manner, usually used between offices. The No. 7 signaling system used in our country is called China No. 7 signaling system. The SS7 network is an out-of-band data communication network, which is superimposed on the operator's switching network and is an important part of the supporting network. The No. 7 signaling system adopts a multi-functional modular design and is a signaling system more suitable for digital communication networks. [0003] When E1 is used for SS7, in the 32 time slots (Time Slot), the 0th time slot is used as frame synchronization information, the 16th ti...

AI Technical Summary

Problems solved by technology

If the time slot occupied by signaling (including the starting time slot position and the number of time slots) has changed, it is necessary to manually notify the manager of the acquisition device to reconfigure the parameters of the HDLC channel, which is cumbersome and error-prone

[0006] In addition, generally speaking, only a part of the time slots in the E1 link is used to transmit No. 7 signaling. If the E1 link to be monitored is directly connected to the collection device, the E1 interface resources of the collection device will be formed. big waste

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