Question: In a routed mode configuration with a NATed Residential Gateway (RG), what triggers the PCEF to initiate IP-CAN session establishment?
Option 1: Assignment of an IPv4 address and/or IPv6 Prefix to the 3GPP UE
Option 2: Completion of 3GPP-based access authentication for the 3GPP UE
Option 3: Establishment of a PPP pass-through feature for a fixed device
Option 4: Connection of the RG to the network and assignment of an IPv4 address and/or IPv6 Prefix to the RG
Explanation: In a routed mode configuration with a NATed Residential Gateway (RG), the PCEF initiates IP-CAN session establishment after the RG connects to the network and is assigned an IP address (IPv4) and/or an IPv6 Prefix, highlighting the importance of the RG's connectivity and IP assignment in triggering the IP-CAN session setup.