目 录
1 背景介绍....................................................................................................................................1
1.1 背景............................................................................................................................1
2 OTN 标准简介.............................................................................................................................2
2.1 OTUk 帧的结构...........................................................................................................2
2.1.1 OTUk 开销...................................................................................................2
2.1.2 OTUk 的 FEC................................................................................................6
2.1.3 OTUk 帧的加扰...........................................................................................8
2.2 ODUk 的帧结构...........................................................................................................8
2.2.1 ODUk 的 PM 开销.......................................................................................10
2.2.2 ODUk 的 TCM 开销.....................................................................................12
2.2.3 ODUk 中的其他开销.................................................................................16
2.3 OPUk 的帧结构.........................................................................................................18
2.3.1 OPUk 开销.................................................................................................19
2.3.2 和映射有关的 OPUk 开销........................................................................20
2.4 OTN 的维护信号（Maintenance signals）.........................................................20
2.4.1 常见的维护信号......................................................................................20
2.4.2 OTUk 的维护信号.....................................................................................21
2.4.3 ODUk 的维护信号.....................................................................................21
2.5 客户信号的映射......................................................................................................22
2.5.1 Mapping of CBR2G5, CBR10G and CBR40G signals .,
STM-16/64/256) into OPUk..........................................................................................22
2.5.2 10GE（）业务到 OTU2(11.1G)的映射...................................................26
2.5.3 4 个 ODU1 到 1 个 OPU2 的映射（Mapping ODUk signals into the
ODTUjk signal）............................................................................................................27
2.5.4 同步映射和异步映射的比较..................................................................34
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