I've implemented several analog Asterisk installs, and echo has always
given me grief. I'm now looking at doing my first T1-based install, and
I'd really like to go with a card that has DSP-based echo cancellation
built in. However, all T1 cards I see with echo cancellation are
quad-spans. So:
1) Are there any single-span T1 cards with DSP-based echo cancellation?
2) Does said echo cancellation actually *work* well?
I'm certainly willing to pay the quad-span premium if it means that I
can pretty much kiss echo goodbye... but I'd prefer not to spend the
money if I didn't have to.
Suggestions?
Thanks!
-Ken D'Ambrosio
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