Question: What is the primary purpose of the Relay Service Code in ProSe (Proximity Services) communications?
Option 1: To identify a connectivity service provided by UE-to-network relay for Public Safety group communications.
Option 2: To authenticate User Equipment (UE) for voice over LTE (VoLTE) services.
Option 3: To manage Quality of Service (QoS) for video streaming applications.
Option 4: To encrypt signaling messages between the UE and the Evolved Node B (eNodeB).
Explanation: The Relay Service Code identifies a connectivity service, specifically facilitating UE-to-network relay communication, aligning with ProSe's objectives for direct and relayed communications among proximity devices, particularly useful for Public Safety scenarios.