To find out how good your voice quality is, you can measure it in terms of Mean Opinion Score (MOS) and R Factor, both of which are the unit measurement derived from the users perception on the voice they hear. MOS can be found at http://www.voiptroubleshooter.com/diagnosis/emodel.html. Below we have provided you with examples of MOS measurements based on a number of Codecs.
|User's opinion||R Factor||MOS Score|
|Maximum values obtained by G.711||93||4.4|
|Not recommended||0 – 50||1.0-2.6|
MOS Score and R Factor are measured based on users' experience on a communication session
Entering other types of codec and values pertaining to our bandwidth for every codec, we obtained the following MOS and R Factor calculation:
|Codec||Frame||Packet Loss||MOS||R Factor||Kbps|