美利体育登录入口官网:LST EN 300 417-4-2 V1.1.1-2001
传输和复用(TM);美利体育官网首页网址传输功能的通用要求;第 4-2 部分:同步数字系列(SDH)路径层功能;实施一致性声明(ICS)形式规范
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