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Essential Guide to Home Networking Technologies, The by GERARD O'DRISCOLL

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DIGITAL SUBSCRIBER LINE (DSL) TECHNOLOGIES

Up to a couple of years ago, the plain old telephone system in conjunction with a standard modem offered us the most convenient means of accessing information on the Internet. Due to the explosive growth of people connecting to the Internet using this system, it has become less convenient for accessing data.

This is mainly because the existing telephone infrastructure was designed for voice signals only. It was never intended to carry digital information due to its sensitivity to external noise sources and attenuation losses over long distances. The demands on the system from a typical phone call are very different from the resources that are required to support a connection to the Web.

Voice-optimized ...

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