|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008年05 期
| 标题 |
| 浅谈TU-12指针丢失告警的处理(44 卷) |
| 英文标题 |
| 摘要 |
| TU-12为2Mb/s复用映射过程的支路单元，其指针共有3个字节，用于确定VC12在TU-12中的起始位置。与TU-12对应的指针为TU-PTR，对应的开销是低阶通道开销LP-POH，它监控的是VC12通道级别的传输性能，也就是监控2Mb/s的PDH信号在STM-N帧中传输的情况。V5字节是LP-POH中的首字节， |
| 作者 |
| 新闻作者:历〓伟 |
| 关键字 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 标题 |
| 浅谈TU-12指针丢失告警的处理(44 卷) |
| 英文标题 |
| 摘要 |
| TU-12为2Mb/s复用映射过程的支路单元，其指针共有3个字节，用于确定VC12在TU-12中的起始位置。与TU-12对应的指针为TU-PTR，对应的开销是低阶通道开销LP-POH，它监控的是VC12通道级别的传输性能，也就是监控2Mb/s的PDH信号在STM-N帧中传输的情况。V5字节是LP-POH中的首字节， |
| 作者 |
| 新闻作者:历〓伟 |
| 关键字 |
| COPYRIGHT©2001-2025 CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LIMITED，ALL RIGHTS RESERVED | ||
|
