Question: In a Wireless and Wireline Convergence Access Support scenario for the 5G System (5GS), what is distinct about the role of W-AGF during a PDU session release procedure initiated by an FN-RG (Fixed Network - Radio Gateway) compared to a traditional 5G-RG setup?
Option 1: W-AGF only relays the release request without interacting with any external entities.
Option 2: W-AGF acts independently to release resources on the fixed network side without AMF notification.
Option 3: W-AGF is bypassed in favor of direct communication between FN-RG and AMF for N1 signalling.
Option 4: W-AGF acts on behalf of FN-RG as an endpoint for N1 signalling, facilitating communication with the AMF.
Explanation: In Wireless and Wireline Convergence Access Support for the 5GS, when a Fixed Network - Radio Gateway (FN-RG) initiates a PDU session release, W-AGF acts as a proxy on behalf of FN-RG, serving as the endpoint for N1 signalling towards the AMF. This is distinct from traditional 5G-RG setups where direct communication or different signalling paths might be utilized.