[Asterisk-Dev] Measuring MOS Scores

[James H. Thompson]

> Hi James,
> 
> MOS = Mean Opinion Score
> 
> Do machines have opinions? :-)
> 
> MOS is a costly, and definitely not an automatable, process. 
> It requires an extensive formalised test of the system with a 
> large number of humans. If you have seen packages which say 
> they automate MOS testing, they are lying. Sometimes they 
> just seem to use the term MOS for something other than a real MOS.
> 
> I believe the R-factor, and other similar factors, are a 
> problem for free software. Although P.853 defines a testing 
> method, I understand there are patents on the methods used, 
> as the wiki page mentions.

So is there a reasonable alternative?

We would like to deploy two dozen or so probes through our network, and have
them make periodic calls and record/report call quality.  Customers would
like to see MOS estimates or some other recognized measure of call quality.

Jim