ETSI TS 101 952-4-2012 接入,终端,传输与复用(ATTM).欧洲部署用接入网xDSL分流器.第4部分:POTS上xDSL的动态分布式过滤器规范
Access, Terminals, Transmission and Multiplexing (ATTM); Access network xDSL splitters for European deployment; Part 4: Specification for dynamic distributed filters for xDSL over POTS