[Asterisk-bsd] echo

[Jeremy Bogan]

> My other question (and a more important one) is: will moving to  
> ISDN or a different FXO card help? Does ISDN have echo problems at  
> all, or because it is all digital, is this problem completely gone?  
> We are thinking of installing Asterisk for our customers, but they  
> will not be as tolerant of a little echo as we are. So should we  
> mandate ISDN as the best approach?

ISDN should make a sufficient difference in regards to echo. What  
echo canceller are you currently using for Zaptel?

> Otherwise, are other FXO cards better at echo cancellation or is  
> this a software feature built into the driver?

The Sangoma A200 cards with hardware echo cancellation are fantastic,  
and they work great under BSD.

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[ jeremy at voicebox.net.au ]