Method of measuring and improving xDSL transmission...

Details Method of measuring and improving xDSL transmission... Method of measuring and improving xDSL transmission...

2001-10-11

2008-09-09

Taylor, Barry W (Department: 2617)

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Of data transmission

C379S001010, C379S027010, C379S028000, C379S029010

Reexamination Certificate

active

07424097

ABSTRACT:
A system for measuring the transmission characteristic of an xDSL system that implements high-speed data communication over existing copper telephone wires connecting an office and a subscriber includes a polling device included in the outside line of an xDSL circuit, which is installed in an office, for polling a subscriber line. A noise level measuring circuit measures the existing level of cross-talk noise on the subscriber line. A decision circuit determines, based on the existing level of cross-talk noise measured, whether or not the subscriber line is usable.

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“A Spectrum Analyzer for the Radio Amateur”, by Wes Hayward and Terry White, dated Aug. 1998.
Ziemann, P.: “ADSL line qualification tests” Application Note 52, Sep. 28, 2000, pp. 1-5.

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