IMS S2-7f. SIP 180 Ringing response (INVITE): from P-CSCF1 to UE1

Tech-invite 3GPPspace IETFspace

SIP ↠ Examples Grammars Presence ⇾ Main Services Transaction Dialog IMS

TS 24.228 – §7.2.3 – §7.3.5 – §7.4.3

IMS S2 signalling flow - Session Initiation: mobile origination and termination in home network - IMS S2-7f. SIP 180 Ringing response (INVITE): from P-CSCF1 to UE1

Record-Route: P-CSCF1 rewrites the Record-Route header to add the comp=sigcomp parameter to its own SIP URI and its port number negotiated during the security agreement.