> >pstn -> sip gw -> * -> C7960 > > > >When I dial into * via the pstn, I hear the ivr menu just fine (good > >quality). I press 3000 (valid extn), and I begin to hear ringing however the > >ring back is very very choppy. > > > >I answer the C7960, and speech is clear in both directions. Place the C7960 > >extn on hold, and the MOH is very choppy. Checking 'sip show channels' indicates > >both the sip gw and C7960 are using ulaw; Both are 100 meg on local LAN. Top > >suggests all processes running less then 1 or 2 percent. > > > >The choppy sound only happens on the sip gw (Mediatrix 1204). MOH between two > >C7960's works fine. MOH via x100p works fine. > > > >Tried canreinvite=no and yes; no difference. Using a packet sniffer, I see a > >~200 millisecond delay about every 1/2 second or so (varys), but nothing within > >the trace to hint at a layer-2 problem. > > > >Anyone have any thoughts as to why ringback and MOH are choppy but conversations > >are fine? Anything else I can look at to isolate the issue? > > > You need to disable VAD on the 1204. > The 1204 stops xmiting RTP to * if it does not detect any acoustic energy. > > * can not clock itself sending RTP packets. > It relyes on receiving RTP packets for it's timing. > Try singing along with your MOH and the choppiness should go away, or > disable VAD, or fix * RTP driver.
Thanks Bob, that fixed it. Any other hints/issues/default values that I should muck with, or is that about it? Seems like it works pretty good; excellent echo cancellation, etc. I haven't done anything with the box as yet for dialing outbound. Anything to be concerned with, special parameters, etc? Rich _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
