Method and apparatus for DC feed
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United States of America Patent
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Dec 8, 2009
Issued Date -
N/A
app pub date -
Dec 29, 2000
filing date -
Dec 29, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus is provided for DC feed control for a line card. The method includes determining if the line card is operating in a current limit region of a DC feed curve and synthesizing a curve in the current limit region. The method further includes determining a loop voltage based on the synthesized curve, and applying the loop voltage to the subscriber line. The apparatus includes logic capable of determining if the line card is operating in a current limit region of a DC feed curve and capable of determining a loop voltage based on a synthesized curve in the current limit region. The apparatus further includes circuitry for applying the loop voltage to the subscriber line.
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