digital subscriber line (DSL)
Definition
Generic name for a family of fast digital communication services such as asymmetric digital subscriber Line (ADSL), symmetrical digital subscriber line (SDSL), and very high rate digital subscriber line (VDSL). DSL services offer speeds higher than that of integrated services digital network (ISDN) but lower than that of a cable modem or a T-1 line; and, like the ordinary (analog) telephone service, typically operate on only one pair of wires.
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