Question: During an IMS Multimedia Emergency Service (IMS MES), if an IP PSAP attempts to add additional media to an existing session, what should the UE do?
Option 1: Automatically accept the additional media without notifying the user.
Option 2: Reject the request for additional media to maintain session stability.
Option 3: Temporarily hold the existing media while the new media is being established.
Option 4: Inform the user of the request and seek their permission to either permit or deny the addition of new media.
Explanation: This is correct because, according to IMS MES requirements, transparency and user consent are crucial. Notifying the user and seeking their permission ensures awareness and agreement to changes in the emergency session, maintaining trust and control during a sensitive situation, aligning with user privacy and informed decision-making principles.