[Freeswitch-users] Audio Quality of recordings

[Brian West]

Can you send me pcaps and recordings of this to my personal address please.

--
Brian West
brian at freeswitch.org
FreeSWITCH Solutions, LLC
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On Nov 12, 2013, at 8:37 PM, Scott Ross <slross16 at gmail.com> wrote:

> 
> I wasn't advised to use ubuntu, just including it as another data point (its my dev machine).
> 
> I've tested against two physical servers. 
>        RedHat 6, Xeon 6 core 2.6ghz, 32g ram
>        The dev machine running Ubuntu 13.04, decent Core i7, 12g ram 
> I've tested on several XenServer instances running RedHat 6.
> All devises/hosts are on the same internal network.
> 
> Seeing the same results regardless. 
> 
> The device on the other end of the calls is an external conference bridge (physical host). There could be some device specific issues - but I see the same results when testing against another freeswitch instance on the same network set up with mod_conference.
> Using g711 and recording to .wav.
> The call sounds unsatisfactory in real time and in the recordings
> Call quality is near perfect when the two calls aren't bridged into a freeswtich conference or our external conference bridge. But even setting up a basic freeswitch conference to run the tests against resulted in the lower quality. 
> 
> So "failure" case appears to be when two separately originated calls being bridged into any single conferenced environment. 
> 
> Just to be clear - the quality is ok, but not great. For reference, I'm expecting a PESQ score of 3.8 or greater - which is met with asterisk (seeing 3.8 - 4.3), but Freeswitch in its current setup consistently results in 0.5 - 1 point lower at around 2.9 - 3.7.
> 
> I'm hoping there is some environment/configuration tweaking I can do to fix this. I have tried running FS with the -hp flag. Do I need to make configuration changes on my OS/network to account for that? 
> 
> Does this feel like an OS level issue? Do I need to try Debian 6?
> 
> Thank you for the reply. Again, let me know what other info I can provide.  
> 
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