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DSL Physical Layer Testing

Over the next few blog posts, we will cover some of the basic principles of testing the performance of the Digital Subscriber Line (DSL) physical layer. Each set of DSL transceivers operates over a local loop of the telephone network. Essentially, this is a transmission line consisting of two copper conductors that are twisted together. The exact wire gauge, dielectric insulation between the conductors, and other electrical and mechanical specifications differ globally from geographic region to geographic region.