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Y.1541 QoS Classes Class 0: mean delay <= 100 ms, delay variation <= 50 ms, loss ratio <= 10-3 real-time, highly interactive applications, sensitive to jitter application examples: VoIP, video teleconference Class 1 mean delay <= 400 ms, delay variation <= 50 ms, loss ratio <= 10-3 real-time, interactive applications, sensitive to jitter application examples: VoIP, video teleconference Class 2 mean delay <= 100 ms, delay variation unspecified, loss ratio <= 10-3 highly interactive transaction data application examples: signaling Class 3 mean delay <= 400 ms, delay variation unspecified, loss ratio <= 10-3 interactive transaction data application examples: signaling |