Question: What is the primary role of the Traffic Steering Support Function (TSSF) in the (S)Gi-LAN, as directed by the Policy and Charging Rules Function (PCRF)?
Option 1: To enforce traffic steering policies by configuring traffic detection and forwarding entities for uplink, downlink, or both, based on PCRF instructions.
Option 2: To monitor network congestion and autonomously adjust traffic routing without external policy updates.
Option 3: To manage Quality of Service (QoS) for specific applications without considering traffic direction.
Option 4: To authenticate User Equipment (UE) before allowing access to the (S)Gi-LAN.
Explanation: The TSSF's primary function is to receive and enforce traffic steering policies from the PCRF, configuring entities within the (S)Gi-LAN for proper traffic management, applicable to uplink, downlink, or both directions.