Question: In a Mobile Equipment supporting Voice Group Call Services, what action does the ME perform when a Voice Group Call Service Request is initiated, given that the relevant service is allocated and activated?
Option 1: The ME performs a writing procedure with EFVGCS to update service settings.
Option 2: The ME initiates a voice call setup using the IMSI stored in EFIMS.
Option 3: The ME performs the reading procedure with EFVGCS (Voice Group Call Service).
Option 4: The ME updates EFVGCSS (Voice Group Call Service Status) to reflect an active call.
Explanation: When a Voice Group Call Service Request is made and the relevant service is both allocated and activated, the Mobile Equipment's first step is to gather the necessary service configuration or settings. This is achieved by performing a reading procedure with EFVGCS, ensuring the ME has the latest parameters to proceed with the request.