There is really no such thing as a calculation for MOS... its an "opinion" score. Lots of companies claim to have a calculation (that of course is proprietary) but best i have been able to tell, there is no standard for such a calculation.
I would like to measure
the MOS score of every call.
I know that XML CDR gives a lot of
information but I don't know the meaning of
the rtp_audio* headers and
if they are enough for MOS calculation.