Transmission and Multiplexing (TM); Generic requirements of transport functionality of equipment; Part 5-2: Plesiochronous Digital Hierarchy (PDH) 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5-2部分:准同步数字体系(PDH)路径层功能;实施一致性声明(ICS)形式规范