Question: What happens to a mobile terminated packet if there is no context IP-CAN session associated with the IP address for Non-IP PDN types?
Option 1: The packet is always forwarded towards the MS/UE.
Option 2: The packet is always discarded or rejected depending on the implemented protocol.
Option 3: The packet is buffered until a context IP-CAN session is established.
Option 4: The packet is forwarded, discarded or rejected depending on the implemented protocol.
Explanation: According to the subscription checking procedure during IP-CAN session establishment, for PDN type "Non-IP", if there is no context IP-CAN session associated with the IP address, the packet shall be forwarded towards the MS/UE, discarded or rejected depending on the implemented protocol. This highlights the importance of proper handling of packets in Non-IP PDN types to ensure correct delivery or rejection based on the specific protocol implementation.