Question: In a 5G network utilizing Service-Based SMF discovery, what triggers a P-CSCF (Proxy-Call Session Control Function) to register its capabilities with the NRF (Network Repository Function)?
Option 1: Periodic timer expiration for all P-CSCFs in the network.
Option 2: Local configuration of the P-CSCF indicating support for SMF discovery.
Option 3: Receipt of a specific registration request from the SMF (Session Management Function).
Option 4: Network initialization after a global restart.
Explanation: The decision for a P-CSCF to register with the NRF for Service-Based SMF discovery is determined by its local configuration, which dictates whether the P-CSCF should perform registration with the NRF to advertise its capabilities.