ETSI TS 101 135-1999 传输和复用(TM).金属本地线路上的高比特率数字用户线路(HDSL)传输系统.结合ISDN-BA和2,048 kbit/s传输的HDSL核心规范和应用(版本1.5.2)
Transmission and Multiplexing (TM); High Bit-Rate Digital Suscriber Line (HDSL) Transmission System on Metallic Local Lines; HDSL Core Specification and Applications for Combined ISDN-BA and 2 048 kbit/s Transmission V1.5.2