A.接入層安全性 B.MOBILITY ANCHORING FOR INTER-3GPP MOBILITY C.MOBILITY ANCHORING FOR NON-3GPP ACCESS SYSTEM D.觸發(fā)和分發(fā)尋呼到ENODEB
A.UE IDENTIFICATION B.GTP TUNNEL ENDPOINTS C.VOIP SIGNALING D.3GPP2 NETWORKS
A.SEAMLESS VOICE HANDOVER B.CIRCUIT SWITCHED SERVICES VIA UU C.COMMON A-BIT INTERFACE D.4D SCALABILITY