[Asterisk-Users] Echo with polycom phones

[Christian Hecimovic]

Hey Sean,

Are you using Zap modem cards (X100P)? There can be bad echo with those 
things. The echo canceling effect you are hearing comes from the Polycom 
phones - they dynamically "learn" from the echo at the beginning of the call 
and adjust the echo cancellation accordingly. We are using a Mediatrix SIP 
gateway now - no echo at all.

Christian

On Monday 05 January 2004 13:28, Sean Garland wrote:
> I have soundpoing ip 500 phones and the first few seconds of every call
> has echo, which then goes away.  Is there a way to have the echo cancel
> on at the beginning?  It seems like it is testing at the beginning but
> it would be nice if I could have it start closer....
>
> Thanks
>
> Sean Garland
> Siskiyou Technology Consultants
> 205 N. Mt. Shasta Blvd. Suite 100
> Mt. Shasta, CA 96067
> Phone: (530)926-1489
> FAX: (530)926-6296
> sean at siskiyoutech.com