Method for determining telephone dial pulse parameters independently of subscriber line length
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United States of America Patent
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-
Jun 13, 1989
Grant Date -
N/A
app pub date -
Aug 25, 1986
filing date -
Sep 30, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is disclosed for measuring telephone dial pulse parameters independent of telephone subscriber line length. To avoid distortions resulting from varying subscriber line lengths, there is performed during the first pulse interval of a dial pulse series to be measured, a voltage measurement with results in a value that depends on the line length, and, in accordance with this value, the times measured for pulse interval and pulse duration of the dial pulse series are corrected.
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