Method of and apparatus for performing line characterization in a non-idle mode in a subscriber line communication system
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United States of America Patent
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Sep 3, 2002
Issued Date -
N/A
app pub date -
Feb 23, 1998
filing date -
Oct 3, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A digital subscriber line communication system does not require the use of a plain old telephone service (POTS) splitter in the resident's home. Digital signal processing techniques are utilized to adapt to varying subscriber line conditions due to POTS telephone equipment. The digital signal processing techniques eliminate the need for a splitter by reducing susceptibility to distortion due to varying subscriber line characteristics. The digital subscriber line modem characterizes the subscriber line under a variety of conditions when the modem is in a non-idle mode. The digital subscriber line modem includes a control circuit which performs rapid retrain operation utilizing line characterization information.
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