Question: How does the SMF send the P-CSCF address(es) to the UE during PDU Session Establishment procedure related to IMS in a Home Routed scenario?
Option 1: The SMF in VPLMN sends the P-CSCF address(es) directly to the UE.
Option 2: The SMF in HPLMN sends the P-CSCF address(es) through AMF and the SMF in VPLMN.
Option 3: The SMF in HPLMN sends the P-CSCF address(es) transparently through AMF, without involving the SMF in VPLMN.
Option 4: The UE discovers the P-CSCF address(es) using NRF.
Explanation: In a Home Routed scenario, the SMF in HPLMN sends the P-CSCF address(es) to the UE through AMF and also through the SMF in VPLMN. This ensures that the UE receives the necessary information for IMS communication.