[asterisk-users] Voice quality assessment in Asterisk

[Daniel Tryba]

On Fri, Oct 08, 2010 at 02:24:11PM +0200, Bert Van Kets wrote:
>  The professional way is to do a series of test calls, play a reference
> file and record the audio at the incoming side. You then use both files
> to calculate a MOS score. This method is used by telco's to do quality
> checks.

Take a look at the website mentioned in GPs post. He/they already know
this, I guess it is a fishing expedition for competitors :)

We don't do the test calls method, but use inline probes (Fluke ACEs)
that analyze all traffic and give a MOS score to SIP calls and save
network statistics per call (can be retrieved from the RTCP reports in
asterisk). These probes and the analyzer software aren't bug free and
perfect but give a good indication of all historic calls. Once a problem
is spotted we move to test calls to trace the problem.

-- 

   Daniel Tryba