• Abbreviation of high bit rate digital subscriber line, high-speed digital subscriber line, or high bit-rate DSL. A version of DSL utilizing two cable pairs, and which supports up to T1 signaling rates in both directions. There is an equal amount of bandwidth in each direction. For instance, the transmission rate may be 1.544 Mbps upstream, and 1.544 Mbps downstream. E1 is supported with the use of 3 cable pairs.
  • acronym for high bit-rate digital subscriber line
  • acronym for high bit-rate DSL

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