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

[Ken Rice]

This is probably also a 'good thing' for anyone dealing with asterisk...
Asterisk does not have CNG support and you can notice some serious issues
with the media when that happens... This is due to the way asterisk handles
the RTP stream and is required to rcv media before it will transmit media
after the call is established

K


> From: <freeswitch at dalethatcher.com>
> Reply-To: <freeswitch-users at lists.freeswitch.org>
> Date: Mon, 28 Jan 2008 16:10:15 +0000
> To: <freeswitch-users at lists.freeswitch.org>
> Subject: Re: [Freeswitch-users] Audio rate changes and clipping on playback
> 
> Problem solved!
> 
> Thanks to the efforts of Brian and the usual suspects on the mailing
> list the issue has been tracked down to comfort noise generation.
> 
> Mike suggested adding the following to my conf/sip_profiles/default.xml
> in the 'settings' section:
> 
>    <param name="supress-cng" value="true"/>
> 
> This cleared up the audio problems with both Gizmo and FWD Communicator.
> 
> I'll add some notes to the wiki.
> 
> thanks again,
> 
> - Dale
> 
> On Mon, Jan 28, 2008 at 09:03:43AM -0600, Brian West wrote:
>> I have called your public extensions you have and I don't hear this
>> issue.  Let me do some more digging.
>> 
>> /b
>> 
>> 
>> On Jan 28, 2008, at 8:01 AM, freeswitch at dalethatcher.com wrote:
>> 
>>> I mean it sounds like parts of the sound are missing.  e.g. the
>>> frequency of playback seems to change and I can hear a warbling/slow
>>> down from the Freeswitch instance on the audio samples.
>>> 
>>> If you (or any others on the list) have a spare couple of minutes then
>>> I'm happy to send you the details of my test server.  It would be
>>> reassuring if someone else could hear and verify the issue.
>>> 
>>> thanks,
>>> 
>>> - Dale
>> 
>> 
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