[Freeswitch-dev] [Freeswitch-users] VMWare voice quality

Michael Jerris mike at jerris.com
Thu Jan 15 12:30:26 PST 2009

To the contrary, we have had quite good results in virtualized  
environments and you don't really need timing that is that accurate to  
make it work.  We work quite well on amazon EC2 for example.  There  
are 2 issues I know about with vmware, 1 is you need to set a setting  
on the host to extend somewhat sane clocks being available, the second  
is I have seen issues with the bridged network adapter actually  
doubling up all packets causing very strange issues, I suggest not  
using bridged networking if you experience this.


On Jan 15, 2009, at 3:12 PM, Gregory Boehnlein wrote:

> That won't eliminate the problem. Just reduce the possibility of it
> happening.
> Trust me... I've got a large ESX infrastructure, and there is no way  
> that a
> software based Voice platform is going to provide skip free audio in a
> virtualized environment.
>> -----Original Message-----
>> From: freeswitch-dev-bounces at lists.freeswitch.org [mailto:freeswitch-
>> dev-bounces at lists.freeswitch.org] On Behalf Of Ken Rice
>> Sent: Thursday, January 15, 2009 12:15 PM
>> To: freeswitch-users at lists.freeswitch.org; Remko Kloosterman;
>> freeswitch-dev at lists.freeswitch.org
>> Subject: Re: [Freeswitch-dev] [Freeswitch-users] VMWare voice quality
>> On 1/15/09 11:01 AM, "Remko Kloosterman" <R.Kloosterman at mtel.nl>  
>> wrote:
>>> Hello Ken, hello all,
>>> I just read about the FreeSWITCH VMware applicance. I'm curious  
>>> about
>>> your experiences with the audio quality on VMWare, so here's a new
>>> thread.
>>> I've installed freeswitch on VMware Server for Windows. The IVR  
>>> audio
>>> always plays choppy, while the server itself has no performance
>> issues.
>>> The same poor voice quality also goes for Asterisk or Yate, even  
>>> on a
>>> very fast VMware ESX system.
>>> Did you experience the same and/or do you have pointers on how to
>>> troubleshoot and fix this?
>> There is a high resolution timer you need to enable on vmware... I'm
>> not
>> familiar enuff with all the versions of vmware to advise there that
>> switch
>> is, but they have a couple of articles on it in their knowledge base

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