The information from this page comes from many sources. Having worked as a Tier 1 technical support agent for two years under SBC (now AT&T) I learned a lot about the DSL network. Some of this information comes from training. A large amount of this information comes from the excellent help of many techs at http://www.broadbandreports.com/. Most of these techs are field technicians for SBC, but many work for other companies as well. Some of this information I learned from asking questions, helping out others, and watching the field techs help people out. Below is a list of links showing where much of this information comes from.
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