DSL: (digital subscriber line) a technology that exploits unused frequencies on copper telephone lines to transmit traffic typically at multi-megabit speeds. DSL can allow voice and high-speed data to be sent simultaneously over the same line. Because the service is 'always available,' end-users don't need to dial in or wait for call set-up. With DSL you are wired for speed.
Asymmetric flavors
Asymmetrical variations include: ADSL, G.lite ADSL (or simply G.lite), VDSL (ITU G.993.1) and VDSL2 (ITU G.993.2). The standard forms of ADSL (ITU G.992.3, G.992.5, and ANSI T1.413-Issue 2) are all built upon the same technical foundation, Discrete Multi Tone (DMT). The suite of ADSL standards facilitates interoperability between all standard forms of ADSL.

Showing DSL from "1-Meg Modem" to "FDM"

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