Circuit for sensing telephone line conditions
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United States of America Patent
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Jun 16, 1998
Grant Date -
N/A
app pub date -
Dec 14, 1994
filing date -
Dec 30, 1993
priority date (Note) -
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Abstract
A circuit for sensing telephone line conditions, comprising: high impedance termination means across the telephone line; means for accumulating charge through the high impedance termination means; and electrical isolator means intermediate the means for accumulating charge and voltage detecting means.
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