[Asterisk-Users] Problems with IAX2?

[Juan J. Sierralta P.]

On Tue, 2004-04-06 at 13:22, Rich Adamson wrote:

> It appears this bug has been closed by Mark as resolved yesterday. I don't 
> believe it actually is resolved as yet.

	Do your endpoints had a Zap timing source ?
	Becasue a I noted the same problem with a new CVS I´m using to test
which is connected thru IAX2 to a production * which trunks to PSTN.
Since I don´t have a Zap device on my test box I installed zaprtc and
the jitter improved, maybe Zaptel timers improve syncing between PBX.
	Also I believe if one of the peers is using VAD or Silence Suppresion
it could hurt jitter measures.

> I upgraded to dev cvs this morning (CVS-04/06/04-07:59:20 CDT) and connections
> via C7960 and IAX2 to the * demo are less then acceptable. Very choppy, sound 
> disappears for multiple seconds, some sounds repeat within a short period of 
> time (almost like an echo). I'm also hearing the same to other * machines
> for which we have iax connections (not just the demo server).
> 
> Tested with both a C7960 (v6.3) and Snom 200 (v2.03o). The Snom reproduces very
> acceptable iax audio, while the 7960 on the same wire is far from usable.
> I tested both phones using g711 and g729 codecs; Snom was good with either
> codec while the 7960 was bad with either codec.
> 
> I downgraded the 7960 to v6.0 and had the exact same quality problem.

-- 
Juanjo sin .sig