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A method for triggering service single-board switch

A service single-board, simple technology, used in electrical components, time-division multiplexing systems, multiplexing communications, etc.

Inactive Publication Date: 2008-06-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, the switching time of 50ms is a relatively difficult target time to achieve. Therefore, a method is needed to shorten the switching trigger time of the service board as much as possible.

Method used

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  • A method for triggering service single-board switch
  • A method for triggering service single-board switch

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Embodiment Construction

[0020] Generally, the power pins of the service board are designed to be longer than the signal pins. When performing the operation of pulling out the board, because the signal pin is out of contact with the backplane first, the power is out later. Then, after the SDH service is interrupted due to the disconnection of the signal pin, the board is still in the working state, and this state can last for several milliseconds. switching time. There are two power supply methods for service boards: centralized power supply and decentralized power supply. In centralized power supply, the board does not need a power module, but the socket is necessary. The board obtains power from the system through the socket.

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] The solution of the present invention is to set multiple board in-position signal lines on the service single board, or one board in-position signa...

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PUM

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Abstract

The invention discloses a method for triggering the switching of a service veneer, which comprises the following steps: a plurality board-on signal lines are arranged in the service veneer; a plurality of board-on signal lines are acquired; the operation judgment is applied to all the acquired board-on signals; the operation result is compared with the preset value; whether to trigger the switching is determined according to the result obtained from the comparison; if the operation result of the board-on signals is different from the preset value, then the alarm signal triggering the switching is sent outwards; if the operation result is same to the preset value, then the switching is not carried out. The application of the method of the invention shortens the triggering time of the switching in the process of switching the service veneer.

Description

technical field [0001] The invention relates to the technical field of SDH (synchronous digital hierarchy, synchronous digital hierarchy) protection switching, in particular to a method for triggering switching of a service single board. Background technique [0002] Modern society relies more and more on communication, and the viability of communication network is crucial. It is required that the network can automatically recover from failures in a very short period of time, that is, the network must be a self-healing network. There are two important thresholds for service interruption time caused by network failures: the first is 50ms, which can meet the quality requirements of most services at this time. It is transparent; the second time threshold is 2s, if the time is shorter than 2s, the stability of relay transmission and signaling network can be guaranteed. [0003] The SDH ring network is the most common self-healing network. The switching time is an important ind...

Claims

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Application Information

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IPC IPC(8): H04Q1/20H04J3/08
Inventor 刘学斌刘毅
Owner ZTE CORP
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