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Digital Subscriber Line

DSL and its sub-categories- xDSL, refer collectively to a high-speed transmission method of connecting a computer or computer network to the Internet. The xDSL's are simular to ISDN in that both use existing copper telephone lines, and both can only be utilized if the computer location is no more than 20,000 feet from the nearest telephone switching station. XDSL's are, however, faster than ISDN as well as cable connections. Because of this twerky distance restriction, xDSL's are only available in some areas. For this reason, they are sometimes refered to as "last-mile technology."

There is a long alphabetical list of various forms of DSL. In this dictionary, we cover many of them in four main categories: ADSL, HDSL, SDSL, and G.SHDSL

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