Thanks for the lecture. Yes, I thought MOS was more of a perception
type of measurement, but I can't say I know enough to opinion-ate and
thus the reason for the question.
Also, thanks for the links. They seem helpful. Since I have several
scripts in Cacti and Nagios, I'm gonna see if I can come up with
something that could create some performance data per provider. Then
I'll give it a such at integrating that with Asterisk, unless someone
out there has done something like it.
Thanks,
Daniel
On Jun 17, 2006, at 2:00 AM, trixter aka Bret McDanel wrote:
On Sat, 2006-06-17 at 01:26 -0400, Daniel Salama wrote:
Is there any tool that can do LCR for Asterisk but also take into
account MOS scores?
Is it possible to automatically generate MOS scores on random "calls"
so as to keep an updated database on a per provider, per destination,
per time-of-day score? Hopefully, with that information we can create
a better LCR module or script?
MOS (Mean Opinion Score) is generally a bunch of people sitting there
listening to audio and rating it 1-5 (there is a newer method that is
"twice as good" becuase it goes 1-10, basically all values are
double).
Its their opinion. This generally cant be dont automagically and
still
be MOS. You can try to track frame drops and other things on your end
to rate call quality and try to come up with something, but that
technically isnt MOS.
AFAIK asterisk doesnt keep statistics of jitter, frame drops or
anything
else, that might be a good project for someone to take on,
especially if
you have multiple providers so you can rate quality in a more
meaningful
way. The human ear really isnt the best tool for much of this.
http://searchnetworking.techtarget.com/sDefinition/
0,,sid7_gci786677,00.html
http://www.tmcnet.com/tmcnet/articles/2005/voice-quality-
measurement-voip-alan-clark-telchemy.htm
http://channels.lockergnome.com/it/archives/
20050715_voipqos_mos_mean_opinion_score_explained.phtml
--
Trixter http://www.0xdecafbad.com Bret McDanel
Belfast IE +44 28 9099 6461 DE +49 801 777 555 3402
Utrecht NL +31 306 553058 US WA +1 360 207 0479
US NY +1 516 687 5200 FreeWorldDialup: 635378
http://www.trxtel.com the VoIP provider that pays you!
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