Question: In E-UTRA conformance testing for User Equipment (UE), what is the required state of the UE for Signalling testing when in Registered, Idle Mode with UE Test Mode Activated?
Option 1: State 2A-RF-CE
Option 2: State 2A-CE and State 2A-RF-CE interchangeably
Option 3: Unregistered, Connected Mode
Option 4: State 2A-CE
Explanation: For Signalling testing, the UE needs to be in a state that focuses on signalling aspects without the complexity of RF and RRM considerations. State 2A-CE is specifically defined for Signalling testing, ensuring the UE is appropriately configured for this type of conformance evaluation, distinguishing it from RF and RRM testing which uses State 2A-RF-CE.