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HDSL2 Headway

The second incarnation of high bit-rate digital subscriber line reached a milestone on its way to standardization. The ANSI T1E1.4 technical subcommittee has settled a provisional agreement that provides a basis for line code, forward-error correction and spectral shaping for HDSL2 transmissions.

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The committee, which includes representatives from ADC Telecommunications, Adtran, Level One Communications, PairGain and Siemens, has yet to decide on the framing structure and an overhead threshold for the technology, but members say the fully approved standard is set to be ratified at the end of 1998.

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© 2012 Penton Media Inc.

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