DSL, or digital subscriber lines, is one of the fastest growing market segments in the broad-band communications market. DSL allows a computer user to receive data through the Internet at speeds up to 50 times faster than traditional dial-up modems. Much of the success of DSL hinges on the fact that it is easily implemented through the millions of miles of existing copper wire historically used only for telephone lines. The DSL market is growing in excess of 30% per year in terms of installations and rivals cable modems in terms of speed and expense.Demystifying DSL provides a comprehensive introduction to the fundamentals of a new communications technology that will revolutionize the world. Without resorting to hard-to-understand math formulas, the subject is given a thorough treatment including how the technology will enable new business opportunities. Business, technical, educational, and other interested professionals will find the material eminently readable and understandable.