DSL ADSL RADSL SDSL HDSL and VDSL Author:Howard Hecht, John Freeman, Marlis Humphrey DSL (digital subscriber line) and its variations are the blazing-hot technology that will deliver the full promise of the information superhighway to homes and businesses-and do it inexpensively. And this is the first book on this communications technology, covering global applications, migration strategies, implementation, and more. Written by ... more »the market leaders in DSL, it's the in-depth introduction that every technology pro will need.« less