Question: In a Transparent end-to-end Packet-switched Streaming Service (PSS), how is the metric for "TotalNumberofSuccessivePacketLoss" calculated over each resolution period of the stream?
Option 1: By averaging the number of successively lost P packets across all packet loss events.
Option 2: By counting the total number of individual packets received without error.
Option 3: By summing up all the numbers of successively lost P packets over each resolution period.
Option 4: By dividing the total packet loss by the number of successive loss events.
Explanation: The correct answer, Option 3, accurately reflects how the "TotalNumberofSuccessivePacketLoss" metric is calculated. According to the specifications, this involves summing up all the numbers of successively lost P packets over each resolution period of the stream, which directly impacts the assessment of streaming service quality by quantifying cumulative packet loss events. This understanding is crucial for telecom operators to evaluate and enhance the reliability of their streaming services.