摘要: PRC(Primary Reference Clock,基准参考时钟):G.811时钟信号 SSU-A(primary level SSU,转接局时钟):G.812转接节点时钟信号 SSU-B(second level SSU,本地局时钟):G.812本地节点时钟信号 SEC(SDH Equipme 阅读全文
posted @ 2024-05-14 15:05 Teejiang 阅读(1064) 评论(0) 推荐(0)