Transmission and Multiplexing (TM); Generic requirements of transport functionality of equipment; Part 4-2: Synchronous Digital Hierarchy (SDH) path layer functions; Implementation Conformance Statement (ICS) proforma specification
传输和多路复用(TM);设备运输功能的一般要求;第4-2部分:同步数字体系(SDH)路径层功能;实施一致性声明(ICS)形式规范