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SIP ↠  ExamplesGrammarsPresence ⇾  MainServicesTransactionDialogIMS
TS 24.228§7.2.3§7.3.5§7.4.3   List   Prev   Next
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IMS S2 signalling flow - Session Initiation: mobile origination and termination in home network - IMS S2-6a. SIP 200 OK response: from UE2 to P-CSCF2