The synchronization layer function of the SDH network

MAO Qian

doi:10.13756/j.gtxyj.1999.06.002

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The synchronization layer function of the SDH network

- The synchronization layer function of the SDH network
- Study on Optical communication Issue 6, Pages: 5-20(1999)
- 作者机构：
  
  武汉邮电科学研究院!湖北武汉430074
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.1999.06.002
  CLC： TN914.3
- Published：1999，
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[1]毛谦.SDH网的同步层功能[J].光通信研究,1999(06):5-20.

MAO Qian. The synchronization layer function of the SDH network. [J]. (6):5-20(1999)
[1]毛谦.SDH网的同步层功能[J].光通信研究,1999(06):5-20. DOI： 10.13756/j.gtxyj.1999.06.002.

MAO Qian. The synchronization layer function of the SDH network. [J]. (6):5-20(1999) DOI： 10.13756/j.gtxyj.1999.06.002.

摘要

本文从原子结构的角度，对SDH网的两个同步层：网络同步层（NS）和同步分配层功能进行定义，同时也对与之相关的传送层的部分功能进行定义。从网络的角度，分析了同步网的组成及其分层，给出了同步网时钟传递的参考链路，描述了同步法则，规定了与网同步及定时有关的原子功能构件，以及SDH网元如何参与网络的同步。结合我国的具体情况，选择了适合我国应用的同步处理规范。

Abstract

We analyze the composition and layering structure of the synchronization network from the network view point

give the reference link of the clock transporting of the synchronization network

describe the rule on synchronization. It specifies the atomic function building blocks related with the network synchronization and timing

and how the SDH network elements take part in the synchronization of the network. It defines the atomic functions that are part of the two synchronization layers

the Synchronization Distribution （SD） layer and the Network Synchronization （NS） layer from atomic structure view point. It also defines some atomic function

part of the Transport layer

which are related with synchronization. We select the Synchronization Status Messages （SSM） Specifications suitable for applications in China based on the situations in our country.

关键词

SDH同步同步状态消息

Keywords

SDHsynchronizationSSM

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