On Sun, May 18, 2008 at 03:51:08AM +0200, Lionel Elie Mamane wrote: > For calls between the same two asterisk boxes, IAX audio is choppy (a > fraction of second of sudden silence every few seconds) ("iax2 show > netstats" shows lost packets), but SIP audio is OK.
> this scenario is also choppy: > ekiga behind boxA-SIP-boxB-IAX-boxA-ZAP This scenario gives good audio: ekiga-SIP-boxA-IAX-boxB Which made me think of a jitter buffer problem, because in this scenario Asterisk is not supposed to do any dejittering. Indeed, iax.conf on boxA had: jitterbuffer=yes forcejitterbuffer=no with jitterbuffer=no it works *much* better. The ZAP channel also had a jitterbuffer enabled, but not forced. Maybe the two jitterbuffers were being active at the same time? This would be the bug then. On the other hand, disabling the jitter buffer on the zap channel, but enabling it in iax.conf also gives losses. So I think there is really something wrong with the jitterbuffer in chan_iax. Note that "iax2 show netstats" shows very little jitter, on the order of "3" (I suppose the unit is ms?), even with the lost packets. > I checked that this is not solved by 1.4.19.2. It did not happen > before I upgraded to 1.4.19. On the other hand, it is not solved by downgrading to 1.4.18.1 neither. So probably 1.4.19 is not to blame after all. -- Lionel -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]