Question: What is a prerequisite for a User Equipment (UE) to support 'MT-EDT for Control Plane CIoT EPS Optimisation' in terms of other features it must also support?
Option 1: The UE must also support 'HT-EDT for User Plane CIoT EPS Optimisation'
Option 2: The UE is not required to support any additional EDT features
Option 3: The UE shall also support 'MO-EDT for Control Plane CIoT EPS Optimisation'
Option 4: The UE must also support 'DT-EDT for Control Plane CIoT EPS Optimisation'
Explanation: According to the specifications, if a User Equipment (UE) supports 'MT-EDT for Control Plane CIoT EPS Optimisation', it is mandatory for the UE to also support 'MO-EDT for Control Plane CIoT EPS Optimisation'. This ensures coordinated functionality for Control Plane CIoT EPS Optimisation within the UE.