[asterisk-users] Detect Low Quality Calls - Realtime

[Dmitry]

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.loway at gmail.com>
To: Asterisk Users Mailing List - Non-Commercial Discussion <asterisk-users at lists.digium.com> 
Sent: Tuesday, January 8, 2013 2:25 PM
Subject: Re: [asterisk-users] Detect Low Quality Calls - Realtime
 



2013/1/5 joachim <zoachien at 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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