Question: What is the primary purpose of the CS-Service-QoS-Request-Identifier (AVP code 2807) in the context of Policy and Charging Control (PCC)?
Option 1: To authenticate User Equipment (UE) for CS-Services across different HNB GWs.
Option 2: To prioritize QoS requests from multiple PCRFs within a single HNB GW.
Option 3: To uniquely identify a QoS request instance per PCRF, scoped within an individual HNB GW.
Option 4: To synchronize CS-Service-QoS settings between different PCC rules across networks.
Explanation: The correct answer is Option 3 because the CS-Service-QoS-Request-Identifier is specifically designed to identify a QoS request instance uniquely within the scope of an individual HNB GW, per PCRF. This ensures that each QoS request from a PCRF can be distinctly managed and referenced by the HNB GW, facilitating efficient policy and charging control for CS-Services.