asterisk users - Mar 2008 - Voice quality is bad from one side and good from another side

Hi all;

I have two asterisk boxes installed in two separated
sites, the internet bandwidth between them is very
good and I am using G729 codec to communicate with
them and IAX.

The problem that side A hears well side B while side B
does not hear well side A !!

I did one thing in side B that in iax.conf, I set the
bandwidth=high and it helped, but still side B is
complaining from the quality (while its net is very
good).

Any advise what it could be the problem?

Regards
Bilal


     
____________________________________________________________________________________
Be a better friend, newshound, and 
know-it-all with Yahoo! Mobile.  Try it now. 
http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ

bilal ghayyad wrote:
> Hi all;
> 
> I have two asterisk boxes installed in two separated
> sites, the internet bandwidth between them is very
> good and I am using G729 codec to communicate with
> them and IAX.
Try playing around with the adaptive / fixed jitter buffer settings for 
IAX2.  Also, if it's consistently a problem found on one side, consider 
any resource consumption and/or processing issues that may be occuring 
on the sending side that is creating the problem.

Is this "very good bandwidth" just good bandwidth, or also good
latency,
by which we really mean _consistent_ latency?  Or is it highly bursty 
and variable?  This will create jitter and break voice, even if the 
amount of potential throughput is very high.  Consider satellite links 
if you need a good example.

-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599