For whomever do not know what MOS means, I just wanted to share some basic info:
Mean opinion score (MOS)
VoIP measurements are collected for after testing the one-way delay or the latency of the connection, packet loss with a metric to include the number of consecutive packets lost, and the amount jitter (difference in time it takes packets to arrive). Calculations then factor an R Factor that can be used to estimate a MOS score.
MOS has a subjective measurement where listeners would sit in a “quiet room” and score call quality as they perceived it
Mean opinion score (MOS)
MOS Quality Impairment
5 Excellent Imperceptible
4 Good Perceptible but not annoying
3 Fair Slightly annoying
2 Poor Annoying
1 Bad Very annoying