Question: In a scenario where an emergency call with both voice/GTT (General Text Telephone) and other media fails in all connected Packet Switched (PS) Core Network (CN) domains, what action should the User Equipment (UE) take if the Circuit Switched (CS) domain is available?
Option 1: Attempt the emergency call in the CS domain with both voice/GTT and other media.
Option 2: Do not attempt the emergency call in the CS domain; instead, retry in the PS CN domain after a timeout.
Option 3: Attempt the emergency call in the CS domain but only include the request for voice and/or GTT.
Option 4: Send an error message to the user and terminate the emergency call attempt.
Explanation: When an emergency call with multiple media types (voice/GTT and other media) fails in the PS CN domain, the UE should fall back to the CS domain if available but limit the call to voice and/or GTT only, ensuring at least a basic form of communication for emergency purposes, prioritizing the establishment of a voice connection for urgent situations.