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SIP ↠  ExamplesGrammarsPresence ⇾  MainServicesTransactionDialogIMS
TS 24.228§7.2.2§7.3.2§7.4.2   List   Prev   Next
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IMS S1 signalling flow - Session Initiation: Mobile origination and termination roaming, with different network operators - IMS S1-2f. SIP 183 Session Progress response: from P-CSCF1 to UE1
  • P-Media-Authorization: a P-CSCF generated authorization token; this particular example shows a Policy-Element generated by "pdf2.visited2.net" with credentials "9BV3072"; "00" at the end of the authorization token is required to pad to a multiple of 4 bytes.
  • Record-Route: P-CSCF1 rewrites the Record-Route header to add the port number negotiated during the security agreement and the comp=sigcomp parameter to its own SIP URI.