[Asterisk-Users] echo cancellation

[Eric "ManxPower" Wieling]

Bob McDowell wrote:
> My PocketPC with ppcIAX and/or SJPhone behaves in exactly the same way.
> The only resolution is to use an earbud...  I'm guessing that the
> server's echo cancelling is intended to cancel minor echo introduced by
> the path, but doesn't handle 'real' echo caused by looping sound.  Is
> that right?

Asterisk's echo cancel is designed to cancel out echo caused by PSTN 
2-wire circuits.