K1、K2字节原理及应用探讨  

Discussion on Principle and Application of K1、K2 Byte

作　　者：刁碧 甘忠平 杨一荔[1] 

机构地区：[1]四川邮电职业技术学院通信工程系,四川成都610067

出　　处：《通信技术》2008年第10期80-82,共3页Communications Technology

摘　　要：通过对ITU-TG.841建议中K1、K2字节分析,探讨了复用段共享保护环的环(Ring)倒换和跨距(Span)倒换的区别,以及SDH设备复用段倒换的实现,分析了二纤双向复用段保护环发生故障时和恢复时K1、K2字节传送过程及典型故障案例。By studying K1、 K2 byte in ITU-T G .841 recommendation, this essay explores the difference between ring switch and span switch of multiplexing section protection ring, and the implementation of multiplexing section switch in SDH equipment. In addition ,it analyzes the transfer of K1. K2 byte in failure and restoration of the two-fiber bidirectional MSP ring, including some typical failure examples.

关 键 词：自动保护倒换 环倒换 跨距倒换 信号失效 

分 类 号：TN91[电子电信—通信与信息系统]