When i worked in an internet provider with asterisk telephony solution - we
used Aqua (http://www.sevana.fi) to measure voice quality. several nettops were
spread across our network. The nettop called to our asterisk, the asterisk
saved this voice file to the disk, then this file was sent to a server with
Aqua software which compared this file to its original. then the quality
(measured in percents) were sent to Zabbix monitoring. actually this data was
used for analisys and it compares two files (not realtime).
BR,
Dmitry Pavlenko
________________________________
From: Lenz Emilitri <lenz.lo...@gmail.com>
To: Asterisk Users Mailing List - Non-Commercial Discussion
<asterisk-users@lists.digium.com>
Sent: Tuesday, January 8, 2013 2:25 PM
Subject: Re: [asterisk-users] Detect Low Quality Calls - Realtime
2013/1/5 joachim <zoach...@securax.org>
You are pretty much limited to measuring the delay and the jitter.
>The delay you can somewhat estimate prior to the call (with qualify for
>example).
>The jitter / packetloss you can only figure out when the call is already up
>for a while. (e.g. you might have no issues the first minute, but maybe packet
>loss will come in bursts after a minute).
A few years ago I spoke to a Finnish company that had a commercial solution for
automated MOS estimation. So something exists though I have not tested it
first-hand.
l.
--
Loway - home of QueueMetrics - http://queuemetrics.com
Test-drive WombatDialer beta @ http://wombatdialer.com
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