Question: In a scenario where national regulations prohibit roaming interception for an outbound international roaming target, how should the Home PLMN (HPLMN) handle IMS VoIP sessions that involve supplemental services for a non-participating target?
Option 1: Deliver both Communication Content (CC) and Communication-Associated IRI to the Law Enforcement Monitoring Facility (LEMF) as if the target were within the country.
Option 2: Report only IRI for IMS VoIP sessions involving supplemental services (e.g., call forwarding) where the target is not participating, but do not deliver CC.
Option 3: Suspend all IMS VoIP services for the roaming target until they return to the home country to comply with national regulations.
Option 4: Automatically redirect all incoming calls for the roaming target to a local number within the home country to facilitate lawful interception.
Explanation: When roaming interception is not allowed due to national regulations, and the target is outside the country, the HPLMN's obligation is to report IRI (but not deliver CC) for IMS VoIP sessions where the target doesn't participate, typically due to supplemental services like call forwarding. This approach balances compliance with regulatory constraints while still providing some level of lawful interception capability.