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SIP ↠  ExamplesGrammarsPresence ⇾  MainServicesTransactionDialogIMS
TS 24.228§6.3   List   Prev   Next
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IMS R2 signalling flow - Re-Registration: User currently registered - IMS R2-2c. SIP 200 OK response: from P-CSCF1 to UE1
  • Service-Route: P-CSCF1 saves the value of the Service-Route header and associates it with UE1. P-CSCF1 then forwards 200 (OK) response from I-CSCF1 to UE1 indicating that the registration was successful.