On Thu, Dec 28, 2017 at 04:21:28PM +0000, Nicolas Breuer wrote: > > I see this : > > > SIP/2.0 183 Session Progress. > CSeq: 1258951486 INVITE. > Require: 100rel. > > SIP/2.0 180 Ringing. > CSeq: 1258951486 INVITE. > Require: 100rel. > > PRACK sip:[email protected]:5060 SIP/2.0. > CSeq: 1258951487 PRACK. > Indeed after the PRACK there is no ? 18x ? packets. You misinterpreted: > I looked at the code and this log happens when a PRACK is received, > but there was no 183 (or other 1xx) response. Can you check the sip > traffic and see what packets are sent around?
A PRACK is a PRovisional ACKnowlegde to messages that don't need any responses in plain old SIP. So the PRACK is a correct new message in response to the 18X received (with req rel100). I'm not seeing these errors in dialog on 4.4.6 setups where upstream demands PRACK. _______________________________________________ Kamailio (SER) - Users Mailing List [email protected] https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
