SDH时钟保护倒换的故障处理

Breakdown Handling of SDH Clock Protection Over-switch

介绍时钟保护倒换的原理,常见故障现象及原因,以及故障定位的方法与排除,并以时钟同步状态字节无效引起时钟保护设置失败为案例,叙述故障定位的方法和步骤。

The principle of clock protection switch-over was introduced together with the frequent breakdown phenomena and their reasons, as well as the approaches for pinpointing the breakdowns. Taking the instance of clock protection configuration failure caused by valid clock synchronous status byte, the breakdown pinpointing approach and its process were described.