[Asterisk-Dev] Measuring MOS Scores

[Paul Vinciguerra]

Have you looked at Cisco IOS Service Assurance Agent for Voice over IP?

http://www.cisco.com/en/US/tech/tk648/tk362/technologies_white_paper09186a008
01d6b68.shtml

Cisco claims it offers Voice over IP codec simulation and voice over IP 
quality measurement (MOS and ICPIF) 

I'll be testing it in the next couple of months.

Paul


On Tue, 05 Oct 2004 07:41:24 +0800, Steve Underwood wrote
> 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.
> 
> Regards,
> Steve
> 
> James H. Thompson wrote:
> 
> >We are looking for automated solutions to measure call quality (MOS scores
> >or R-Factor) to/from several points in our network.  After looking at 
whats
> >its going to cost buy an off-the-shelf system to do this, and suffering
> >sticker shock, I thought maybe this is something that could be measured 
on a
> >call between two Asterisk systems.
> >
> >If anyone has suggestions, or is interesting in doing development 
(possibly
> >for $) on this let me know.
> >
> >Information on MOS and R-Factor
> >http://www.voip-info.org/wiki-Call+Quality+Metrics
> >  
> >
> 
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