Method of and device for measuring echo parameters on telephone lines
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United States of America Patent
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Dec 31, 2002
Grant Date -
N/A
app pub date -
Dec 16, 1999
filing date -
Jul 11, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A test signal is injected on the line (L) and the corresponding return signal produced by the line itself as an effect of the echo is detected. A signal having lenticular envelope is used as test signal and is generated preferably starting from a first sinusoid with a first given frequency modulated in amplitude with a second sinusoid having a second given frequency, lower than the aforesaid first given frequency.
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