What Does Mean Opinion Score (MOS) Mean?
Mean opinion score (MOS) is a common measurement of voice data quality used in Internet telephony. It uses the arithmetic mean of all individual scores to present an average result.
Techopedia Explains Mean Opinion Score (MOS)
In compiling a MOS, listeners provide feedback on voice communications in segments. Using a rating system, they analyze the result of voice presentations according to the quality of the sound and to the consistency of the result.