ETSI TS 101 271-2009 接入终端的传输和复用(ATTM).金属对上的接入传输系统.特高速数字用户线路系统(VDSL2).[ITU-T建议G.993.2修正本](版本1.1.1)
Access Terminals Transmission and Multiplexing (ATTM); Access transmission system on metallic pairs; Very High Speed digital subscriber line system (VDSL2); [ITU-T Recommendation G.993.2 modified] V1.1.1