Yes; the B2BUA should relay the PRACK. > -----Original Message----- > From: [email protected] [mailto:sip- > [email protected]] On Behalf Of ??? > Sent: Tuesday, January 08, 2013 11:26 PM > To: [email protected] > Subject: [Sip-implementors] Received unreliable provisional response > before sending PRACK > > > Hi, > > Sorry to bother you. > > Following the questing below, I have one more question.. > Our B2BUA received provisional responses sequentially (one is > reliable, another is unreliable). > And we received unreliable 183 before acknowledgement of the first > reliable message. > In this case, should we relay the PRACK for the first reliable 183?? > > > UAC B2BUA UAS > 1) INVITE -> > INVITE -> (supported :100rel) > > 2) <- 183 (with SDP, required:100rel) > <- 183(with SDP, required:100rel) > 3) <- 183 (unreliable, no SDP) > <- 183(unreliable, no SDP) > > 4) PRACK -> > PRACK -> (should we relay this PRACK for the first reliable 183?) > > Thanks in Advance, > Regards, > > Wsjung
_______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
