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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 S1-11e. SIP ACK request (UE1 to UE2): from P-CSCF2 to UE2