SDH单向复用段自愈环的研究

RESEARCH OF SDH UNIDIRECTIONAL SHR

该文介绍了同步数字体系(SDH)自愈环,描述了二纤单向复用段自愈环的结构,对比了它的两种自动保护倒换(APS)方法,从降低分插复用器(ADM)设备的成本,自愈网上的定时方式和网元工作模式三方面对二纤单向复用段自愈环进行了分析。

This paper reviews the SDH SHR, summarily depicts the architecture of U-SHR. Two APS methods of U-SHR are compared. Finally, this paper addresses the problems of lowering the cost of ADM device, timing manners in the U-SHR and working mode of the network element.