本文利用分枝限界法解决了自愈环光缆路由的选择问题，提出了分层网络光缆路由规划的数学模型。
This paper discusses the problem of choosing optical cable route with branch and bound way and puts forward the model of planning route in Layered network.
介绍了SDH自愈环的结构及其保护机制、保护转换的指令与协议。最后分析比较了几种常见的SDH自愈环。
It introduces the structure, protective institutions, APS dictate and protocols and at last, compares several kinds of common SDH SHR.
鉴于同步数字体系SDH环形网络结构的巨大成功，WDM环形网络必定首先实用化、商用化，本文着重对各种保护恢复机制的自愈环网进行了分析与比较。
Whereas the vast success of SDH networks, it is WDM rings to be a fact firstly. Some kinds of WDMself-healing rings are discussed and compared.
鉴于同步数字体系SDH环形网络结构的巨大成功，WDM环形网络必定首先实用化、商用化，本文着重对各种保护恢复机制的自愈环网进行了分析与比较。
Whereas the vast success of SDH networks, it is WDM rings to be a fact firstly. Some kinds of WDMself-healing rings are discussed and compared.
应用推荐