Question: In an MSC Server enhanced for Service Centralization and Continuity (SeDoC), where is the User Service Profile data (including identity and supplementary services) primarily handled?
Option 1: Home Location Register (HLR) via D-Interface
Option 2: Visited Location Register (VLR) within the MSC Server
Option 3: Both in IMS domain and HLR for redundancy
Option 4: Exclusively within the IMS domain
Explanation: According to SeDoC principles, an enhanced MSC Server manages such data solely within the IP Multimedia Subsystem (IMS) domain, separating radio access-related data from service profile management.