Question: In a Transparent end-to-end Packet-switched Streaming Service (PSS), how is the "TotalJitterDuration" metric calculated for reporting by the PSS client?
Option 1: By averaging all Jitter_Durations over each resolution period
Option 2: By summing up all packet transmission times over the resolution duration
Option 3: By counting the number of packets lost during the resolution period
Option 4: By summing up all individual Jitter_Durations over each resolution period
Explanation: The correct calculation for "TotalJitterDuration" involves summing up all individual jitter durations that occur within a specified resolution period. This approach accurately reflects the total amount of jitter experienced during that time frame, which is crucial for assessing the quality of the streaming service. Summing these durations provides a comprehensive measure of jitter's impact on the stream, unlike averaging, which would dilute the effect, or counting lost packets, which measures a different aspect of service quality altogether. The option referring to packet transmission times is also incorrect as it doesn't relate to jitter durations.