Improve the kernel and in your situation you will most likely improve your audio. You can't expect perfect audio when the thread handling RTP is waking up later than its designated time (after sleeping for the codec timing). The switch tests for the possibility of this issue on startup when it calibrates your clock offset ... thus it warned you :) "-nocal" will simply skip the process of recognizing and warning that your kernel timer is slow, but will not alter performance in your situation (unless I am missing something) On Fri, Dec 17, 2010 at 4:30 PM, Rafqat . <rafonline@hotmail.com> wrote:
I will try the dev snapshot.
cheers
Raf
Date: Fri, 17 Dec 2010 15:28:49 -0600 From: anthony.minessale@gmail.com
To: freeswitch-users@lists.freeswitch.org Subject: Re: [Freeswitch-users] audio quality issue
if you insist to remain on 1.0.6 try it with -vm -nocal cmd line options as i already stated you should try the development snapshot
On Fri, Dec 17, 2010 at 3:22 PM, Rafqat . <rafonline@hotmail.com> wrote:
btw. I have no audio issues when making calls between phones through freeswitch (voice quality is very good).
________________________________ From: rafonline@hotmail.com To: freeswitch-users@lists.freeswitch.org Date: Fri, 17 Dec 2010 21:19:11 +0000 Subject: [Freeswitch-users] audio quality issue
Hi,
I recently installed freeswitch 1.0.6 on centos 5.5 (hosted on xen
server).
I feel as if the audio quality is not as good as what it should be (6-7 out of 10). This is apparent in calling the default voicemail IVR, sometimes I have issues leaving a message, sometimes I hear some weird noises. However, I have no issues with the quality of the recorded voicemail message I leave, it sounds fine on playback.
Is this an issue with my phones (Flexor 500)? I have a softphone which doesn't seem as bad but still has issues.
I also get the following message on startup of freeswitch:
2010-12-17 21:17:39.138958 [WARNING] switch_time.c:206 Timer resolution of 4000 microseconds detected! Do you have your kernel timer frequency set to lower than 1,000Hz? You may experience audio problems.
I assume its related.
Any help will be much appreciated.
Cheers
Raf
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