Question: In a cell re-selection scenario for a UE supporting both 1.28 Mcps TDD and GSM, what marks the end of the cell re-selection delay period?
Option 1: When the UE's initial GSM RX_LEV surpasses the monitoring threshold.
Option 2: The moment the UE camps on Cell 2 and initiates sending an RR Channel Request message for a location update to Cell 2.
Option 3: Upon completion of the second phase of the test, when GSM measurements commence.
Option 4: When the UE begins monitoring Cell 2's signal strength.
Explanation: The correct answer is Option 2 because the cell re-selection delay period concludes at the moment the UE successfully camps on the new cell (Cell 2) and sends an RR Channel Request message for a location update, signifying the completion of the cell re-selection process from the UE's perspective.