[Freeswitch-users] Audio rate changes and clipping on playback

[Peder @ NetworkOblivion]

Why is it that FS doesn't offer QoS packet tagging as a feature?  It 
seems kind of kludgy to run another program on the same box to tag the 
packets before they are sent out.  I know everything in FS is pretty 
well thought out, so I am sure there is a reason, I am just curious what 
it is.

Peder


Brian West wrote:
> Dale,
> 	What SVN rev are you running?  Is this a xen or other virtual  
> instance?  I have done extensive testing in this area and haven't seen  
> this... It could be related to QoS bits.  Have you tried to use  
> iptables to tag your traffic?  Check this link http://wiki.freeswitch.org/wiki/QoS/
> 
> FreeSWITCH doesn't tag any traffic with any QoS bits and Asterisk  
> does... So you might have to use the above URL to cause the traffic to  
> get tagged and prioritized on the ADSL router.
> 
> /b
> 
> 
> On Jan 26, 2008, at 7:29 AM, freeswitch at dalethatcher.com wrote:
> 
>> Hello all!
>>
>> I'm experiencing some problems with clipping and the rate of  
>> playback of
>> wav files from Freeswitch.  I've not raised this before as I thought  
>> the
>> problems were due to hosting over an ADSL line.  However I've now seen
>> the same issues running from a dedicated host.
>>
>> My test setup is:
>>
>> 	Client <-> NAT ADSL <-> Freeswitch
>>
>> I've replicated using both the Gizmo and FWD clients from Windows.   
>> If I
>> substitute Asterisk with Freeswitch then the audio comes over fine.   
>> The
>> two test samples are one of myself and the fpm-sunshine.wav that is
>> bundled with asterisk.
>>
>> I've tried playing around with the codecs but see the same problems
>> regardless.  Also I've performed a test with a conference hosted on  
>> the
>> Freeswitch instance with myself and friend dialling in using Gizmo and
>> the audio is fine.  Which implied to me that the link between Gizmo to
>> Freeswitch is ok.
>>
>> So I'm guessing that there is something wrong with the samples that is
>> causing the problem?  They're both in this format:
>>
>> $ file fpm-sunshine.wav
>> RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono  
>> 8000 Hz
>>
>> My deployment platform is Debian stable and the Freeswitch SVN  
>> revision
>> is 7343.  I've tried looking in Jira but keep getting a system error
>> page (for search terms 'audio', 'wav' and others).
>>
>> Is anyone else seeing the same issues or has a solution?
>>
>> thanks,
>>
>> - Dale
>>
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> 
> 
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