Question: How does a 5G System (5GS) indicate support for Emergency Services to a User Equipment (UE)?
Option 1: Via the Registration Accept message on per-Tracking Area list and per-Radio Access Technology basis.
Option 2: Through a separate signaling message sent after registration is complete.
Option 3: By broadcasting emergency service support information in system information blocks.
Option 4: The UE discovers it through periodic location updates.
Explanation: According to the specifications, if the 5GS supports Emergency Services, this support is indicated to the UE via the Registration Accept message. This method of indication allows the UE to be informed about emergency service capabilities at the time of registration, ensuring that it can make use of these services when needed.