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Mean Opinion Score (MOS) are calculated using an industry standard formula from data contained in the RTCP stream and Trace Route. The data included in the formula are Packet loss, Latency, Jitter and Codec. The MOS provides a numeric indication of the perceived quality of received voice: Satisfied: 4.0 and above< Some Users satisfied: 3.6 - 4.0 Many Users dissatisfied: 3.1 - 3.6 Nearly Nearly all users dissatisfied: 2.6 - 3.1 Not Not recommended: 1.0 - 2.6 |
