Mean Opinion Score

In voice telephony the term MOS, or mean opinion score is a measurement of the quality of human speech at the destination end of the circuit. MOS is expressed as a single number in the range of 1 (lowest perceived quality) to 5 (highest perceived quality). The MOS is an important factor in determining the QoS.

Vangie Beal
Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.
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