asterisk users - Jun 2006 - Echo Cancelling VoIP traffic

Hi List,

I know that the zaptel modules have echo cancellation, but is this 
possible to do this on VoIP <-> VoIP traffic as well? I'm toying with
a
SIP gateway which has apparently a terrible call quality and would like 
to know if there is any way asterisk can help with this.

Cheers,
Jean-Michel.

-- 
Jean-Michel Hiver - http://ykoz.net/
D?couvrez la R?union des Technologies IP & Telecom
TEL: +262 (0)262 55 03 98 - RCS 434 273 330 SAINT PIERRE

Jean-Michel Hiver wrote:
> Hi List,
> 
> I know that the zaptel modules have echo cancellation, but is this 
> possible to do this on VoIP <-> VoIP traffic as well? I'm toying
with a
> SIP gateway which has apparently a terrible call quality and would like 
> to know if there is any way asterisk can help with this.
no

-- 
Now accepting new clients in Birmingham, Atlanta, Huntsville,
Chattanooga, and Montgomery.

> I know that the zaptel modules have echo cancellation, but is this 
> possible to do this on VoIP <-> VoIP traffic as well? I'm toying
with a
> SIP gateway which has apparently a terrible call quality and would like 
> to know if there is any way asterisk can help with this.
I believe the current Trunk code does include jitterbuffering for sip, 
etc. But, the echo cancellation exists for zap only.

Some of the sip gateways on the market do an excellent job with EC. The 
Mediatrix 1204 as one example is very good, while less expensive boxes 
(such as the spa3000, ht488) have significant limitations.