Zoilo Gomez wrote:
I really don't get it ....
From several emails in this list archive, I had clearly understood
that it is important to switch Echo Cancellation off for fax-channels,
or faxing would not work properly.
However, faxing (B410P ISDN bridged to TE410P PSTN) seems to work fine
with EC at 256 taps on the B410P.
I am confused; can anyone enlighten me?
Echo cancellation does not necessarily break faxing. However, depending
upon how it is implemented it can.
In general fax does not care about echo (as long as it is, indeed, more
of a sidetone than an actual echo), and so it's generally good advice to
tell people to disable echo cancellation on ATAs and other things when
faxing is being used on them simply as a preventative measure.
Lee.
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