Question: In an EVS (Enhanced Voice Services) session, what is a key reason for switching between Compact and Header-Full formats in the EVS RTP Payload Format?
Option 1: To accommodate changes in network congestion levels.
Option 2: To adapt to different required functionalities within the ongoing session, such as changing bit rate or audio bandwidth.
Option 3: Exclusively for switching between EVS primary and EVS AMR-WB IO modes without other format changes.
Option 4: Solely in response to Codec Mode Requests (CMRs) from the media receiver.
Explanation: The correct answer, Option 2, highlights the flexibility of the EVS RTP Payload Format to adjust to varying session requirements, such as modifications in bit rate, audio bandwidth, or operational mode, as dictated by the session’s dynamics and feedback from the media receiver (e.g., via Codec Mode Requests). This adaptability is crucial for maintaining optimal call quality under different conditions.