Question: What happens to NAS timers when an unavailability period is activated due to discontinuous coverage in a satellite E-UTRAN access scenario?
Option 1: All NAS timers are reset.
Option 2: All NAS timers are stopped and associated procedures aborted, except for specific timers like T3412, T3346, and T3396.
Option 3: All NAS timers continue to run normally.
Option 4: The UE automatically switches to a different access technology.
Explanation: When an unavailability period is activated due to discontinuous coverage in a satellite E-UTRAN access scenario, all NAS timers are stopped and associated procedures aborted, except for specific timers like T3412, T3346, and T3396. This allows the UE to conserve resources and prevent unnecessary attempts to connect to the network during periods of poor coverage.