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Branching loop protective method and device

A protection device and loop-forming technology, applied in multiplex communication, time division multiplexing systems, digital transmission systems, etc., can solve problems such as service interruption, protection of abnormal low-order channels, and inability to complete channel protection, etc. Achieve the effect of overcoming business interruption, improving self-healing and flexibility, and reducing business failure rate

Inactive Publication Date: 2005-07-27
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
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Problems solved by technology

However, there are technical defects in completing the tributary protection ring with an optical branch single disk, especially when the optical branch disk itself fails, such as the single disk power supply or the monitoring unit fails, resulting in abnormal operation of the work and protection of the low-order channel at the same time. The channel protection function cannot be completed, resulting in service interruption

Method used

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  • Branching loop protective method and device
  • Branching loop protective method and device
  • Branching loop protective method and device

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Embodiment Construction

[0027] The specific implementation method of the present invention will be described in detail below in combination with the embodiments of the present invention and the accompanying drawings.

[0028] image 3 It is a structural block diagram of the system realizing the present invention. The system of the present invention adopts the SDH equipment of the present invention, and the system is configured as two mutually independent branch protection rings, which can be pre-set through the network management to form a branch protection ring with a disk protection function or a branch protection compatible with the prior art ring.

[0029] If the user needs two branch protection rings with disk protection function, the 1# optical branch processing units of the working and protection optical branch disks can be respectively combined to form a 1# channel protection ring, and the 2# optical branch of the two optical branch disks can be connected at the same time The processing uni...

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Abstract

The invention consists of working optical branching module, protection branching module and low order cross module. The working optical branching module and protection optical branching module each contains two optical branching processing units used in receiving inputted data signal, outputting the payload data signal and status signal of alarm instruction. The low order crossing module contains: channel-protecting process unit used in receiving payload data signal and status signal of alarm instruction, and selecting a channel of data signal in working order from two channels of outputted data signal to send to low order cross-interaction matrix, the low order cross-interaction matrix used in transmitting and receiving normal data signal.

Description

technical field [0001] The invention relates to channel ringing protection in a synchronous digital transmission system, in particular to a method and device for channel ringing protection of low-order branch channels in a synchronous digital transmission system. Background technique [0002] In the current communication network, people pay more and more attention to the security of the network. The survivability design of Synchronous Digital Transmission System (SDH) transport network has become an important focus of competition among network operators or equipment suppliers. [0003] When the network fails, the self-healing design of the SDH transport network ensures that the network automatically recovers from the failure in a very short period of time to carry the business. Network protection generally uses the pre-allocated capacity between nodes for network protection. When a working channel fails, the switching action of the backup channel is used to make the signal ...

Claims

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Application Information

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IPC IPC(8): H04J3/08H04L12/437
Inventor 胡国华廖原吴姗钟永波陶雪丽乔军
Owner FENGHUO COMM SCI & TECH CO LTD
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