Question: In the context of IP Multimedia Subsystem (IMS), what is the primary purpose of integrating 3GPP Generic User Profile (GUP) with IM CN Subsystem user related data?
Option 1: To enhance voice call connectivity for IMS users
Option 2: To facilitate seamless handovers between LTE and 5G networks
Option 3: To introduce an additional layer of security for user authentication
Option 4: To enable unified management and access to user-related data across the network
Explanation: The integration of GUP with IM CN Subsystem user related data is aimed at leveraging GUP's mechanisms and format for a unified approach to managing user profiles. This enables streamlined access and updates to user information, enhancing overall network efficiency and service provision in the IMS context.