Re: [asterisk-users] Voice quality assessment in Asterisk
On Fri, Oct 08, 2010 at 05:51:48PM +0400, Sevana Oy wrote: One quick clarification please... With Fluke ACEs you measure MOS according G.107, E-model, right? Don't know if it is g.107 but it has to be something similar if it isn't. I'm personally more interessted in the network statitics. -- Daniel Tryba -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] Voice quality assessment in Asterisk
Hi, How do you typically test voice quality in Asterisk? For example if you like to do load testing, or monitor voice quality and get notified if certain calls had bad quality for proactive maintenance? Thank you! Best Regards, Sevana Oy http://www.sevana.fi-- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Voice quality assessment in Asterisk
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. https://secure.wikimedia.org/wikipedia/en/wiki/Mean_opinion_score http://voip.about.com/od/voipbasics/a/MOS.htm Bert On 08/10/2010 11:12, Sevana Oy wrote: Hi, How do you typically test voice quality in Asterisk? For example if you like to do load testing, or monitor voice quality and get notified if certain calls had bad quality for proactive maintenance? Thank you! Best Regards, Sevana Oy http://www.sevana.fi -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Voice quality assessment in Asterisk
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 -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Voice quality assessment in Asterisk
Those boxes run around $50k USD, I've only seen them once back in the late 1990s. At work for customer consulting we have very expensive site licenses for Prognosis IPT Assessor which generate great looking pdf reports. We also use Cisco IOS IP SLA however it doesn't have a reporting mechanism. From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Bert Van Kets Sent: Friday, October 08, 2010 8:24 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Voice quality assessment in Asterisk 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. https://secure.wikimedia.org/wikipedia/en/wiki/Mean_opinion_score http://voip.about.com/od/voipbasics/a/MOS.htm Bert On 08/10/2010 11:12, Sevana Oy wrote: Hi, How do you typically test voice quality in Asterisk? For example if you like to do load testing, or monitor voice quality and get notified if certain calls had bad quality for proactive maintenance? Thank you! Best Regards, Sevana Oy http://www.sevana.fi - Disclaimer: This e-mail communication and any attachments may contain confidential and privileged information and is for use by the designated addressee(s) named above only. If you are not the intended addressee, you are hereby notified that you have received this communication in error and that any use or reproduction of this email or its contents is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by replying to this message and deleting it from your computer. Thank you.-- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Voice quality assessment in Asterisk
One quick clarification please... With Fluke ACEs you measure MOS according G.107, E-model, right? Thanks a lot to all who replied and will reply! - Original Message - From: Daniel Tryba dan...@tryba.nl To: Asterisk Users Mailing List - Non-Commercial Discussion asterisk-users@lists.digium.com Sent: Friday, October 08, 2010 4:41 PM Subject: Re: [asterisk-users] Voice quality assessment in Asterisk 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 -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
