HDTV (High Definition TeleVision)

HDSL2 is an HDSL variant that supports T1 and E-1 over a single twisted pair, with a maximum

transmission span of 13,200 feet. A variant known as HDSL4 can run over two twisted pair in order to extend the maximum transmission span to as much as 16,500 feet. See also attenuation, 2B1Q, crosstalk, E-1, FDX, HDSL2, HDSL4, line doubler, local loop, overhead, power, repeater, SDSL, symbol, T1, UTP, and voltage.

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