On Thu, 2003-07-10 at 08:24, Simon Woodhead wrote: > Hi Steven, > > >BTW, my problems where on our private T1 line that sees round trips in > >the 4ms range. Our semi educated guess was that we had a problem with > >the jitter buffer causing echo cancel to go nutty when our ping times > >would occasionally jump to 20ms. When I turned off the jitter buffer, > >the call quality became so clear that people don't believe we are VoIP. > > Would you mind elaborating on what you mean by going 'nutty'? > > Long distance * to * G.729 over IAX works perfectly but we're also using > G.729 over H.323 to our telco's Pace Vega Stream. The ping is only 10-12ms, > occasionally jumping to 20ms. Latency is non-existent and the quality is > excellent but periodically, mid-way through a call it goes wrong with the > other party sounding literally like they are underwater. This only happens > on incoming calls though strangely.
Our problem was that we all of a sudden would get dropped audio, and I had one user complain of extreme lag occasionally. I didn't have anyone else experience the lag, but the dropped audio would come and go. It sometimes would drop out for a second or so. Sound quality when there was still just perfect. For your link to the Pace Vega Stream, what codec are you using? I would assume it would be more of a problem in codec shifting bits or something, but then again this is a wild guess. -- Steven Critchfield <[EMAIL PROTECTED]> _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
