Question: In a Policy and Charging Control architecture, what is the primary function of the User Data Repository (UDR) when deployed, in relation to the Subscriber Profile Repository (SPR)?
Option 1: The UDR complements the SPR by storing additional user data not available in the SPR.
Option 2: The UDR and SPR operate in parallel, each handling different types of subscriber data.
Option 3: The UDR is used exclusively for temporary storage of user data during session setup.
Option 4: The UDR replaces the SPR, serving as a single logical repository for all subscriber/subscription related information.
Explanation: In deployment scenarios where the User Data Repository (UDR) is utilized, it assumes the role of a centralized storage for all subscriber and subscription-related data needed by the Policy and Charging Rules Function (PCRF), effectively replacing the Subscriber Profile Repository (SPR). This consolidation provides a unique reference point for fetching these data, streamlining access to user information within the network.