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TS 24.228 – §7.2.4 – §7.3.5 – §7.4.3   List   Prev   Next
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IMS S3 signalling flow - Session Initiation: Origination in CS Network, and Mobile termination in home network - IMS S3-1d. SIP INVITE request (UE1 to UE2): from P-CSCF2 to UE2
  • Via: The P-CSCF adds the port number negotiated during the security agreement and the comp=sigcomp parameter to its Via header.
  • Record-Route: The P-CSCF adds the port number negotiated during the security agreement and the comp=sigcomp parameter to its own URI.
  • P-Media-Authorization: A P-CSCF generated authorization token. This particular example shows a Policy-Element generated by "pdf1.home1.net" with credentials "31S14621".