This Recommendation describes the automatic protection switching (APS) protocol to support optical data unit k (ODUk) shared ring protection (SRP) in the optical transport network (OTN). Shared ring protection provides two types of switching: SRP-1 with 1 ODU per lambda, and SRP-p with p ODUs per lambda. SRP protects ODUs within a physical ring with ODU cross-connects. The interconnects are in general of type optical transport module-n (OTM-n), as specified in [ITU-T G.709]. The network objectives are given in Annex A.
ITU-T G.873.2-2012由国际电信联盟 IX-ITU 发布于 2012-04-01。
ITU-T G.873.2-2012 在中国标准分类中归属于: M33 光通信设备。
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