Phone-man's Home Phone Wiring Advice Page - DSL - Digital RADSL = Rate-Adaptive DSL (Transmit and receive speeds vary with application and capacity of the copper path - Not common for residential use.) SDSL = Symmetric DSL (1.5 Mbps in both directions for limited distance, normally operated at 768 Kbps or lower - Not common for residential use.) How To Install a DSL Line - Bob Cromwell on Linux You can install your own DSL lines in your home and connect them to your ISP's network interface box. Only a few basic tools are needed, and the parts are available at home-improvement stores. You will need some twisted-pair Ethernet cable, some RJ45 jacks, and one DSL filter for each telephone.