IMS R2-2b. SIP 200 OK response: from I-CSCF1 to P-CSCF1

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SIP ↠ Examples Grammars Presence ⇾ Main Services Transaction Dialog IMS

TS 24.228 – §6.3

IMS R2 signalling flow - Re-Registration: User currently registered - IMS R2-2b. SIP 200 OK response: from I-CSCF1 to P-CSCF1

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.