Page 407 - 5G Basics - Core Network Aspects

Core network aspects 1

11)-13) UE2 responds with a SIP OK message to SCF1(2). SCF1(2) forwards the message to MAS-F.

14) MAS-F decomposes SC3 related information, and constructs two responses for SC-1 and SC-2.
15) MAS-F returns a SIP OK message for SC-2 to SCF1(2).
16) MAS-F returns a SIP OK message for SC-1 to SCF1(1).
17) SCF1(2) forwards the SIP OK message of SC-2 to UE1_IF(2).
18) SCF1(1) forwards the SIP OK message of SC-2 to UE1_IF(1).
19)-21) MUE1 returns an ACK message.

9.1.2 Enriched call decomposition

The enriched call service that supports multi-connection capability can be decomposed into several service
components, which are through different interfaces, different networks and different UE. It means a
multimedia flow can be decomposed into independent flows, which can be delivered through different data
paths to different UE. The information flow is shown as Figure 9-2.

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