DIN ETS 300337:1998 传输和多路传送技术(TM).按照CCITT建议G.702用分层位数率2048 Kbit/s,34368 Kbit/s,和139264 Kbit/s不同信号传输(异步传递方式信元和异步数据分层元)的一般框形结构
Transmission and Multiplexing (TM) - Generic frame structures for the transport of various signals (including Asynchronous Transfer Mode (ATM) cells and Synchronous Digital Hierarchy (SDH) elements) at the ITU-T Recommendation G.702 hierarchical rates of