Re: [Freeswitch-dev] [Freeswitch-users] VMWare voice quality
On 1/15/09 11:01 AM, "Remko Kloosterman" <R.Kloosterman@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
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@lists.freeswitch.org [mailto:freeswitch- dev-bounces@lists.freeswitch.org] On Behalf Of Ken Rice Sent: Thursday, January 15, 2009 12:15 PM To: freeswitch-users@lists.freeswitch.org; Remko Kloosterman; freeswitch-dev@lists.freeswitch.org Subject: Re: [Freeswitch-dev] [Freeswitch-users] VMWare voice quality
On 1/15/09 11:01 AM, "Remko Kloosterman" <R.Kloosterman@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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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. Mike 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@lists.freeswitch.org [mailto:freeswitch- dev-bounces@lists.freeswitch.org] On Behalf Of Ken Rice Sent: Thursday, January 15, 2009 12:15 PM To: freeswitch-users@lists.freeswitch.org; Remko Kloosterman; freeswitch-dev@lists.freeswitch.org Subject: Re: [Freeswitch-dev] [Freeswitch-users] VMWare voice quality
On 1/15/09 11:01 AM, "Remko Kloosterman" <R.Kloosterman@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
Ok if can summarize a little of the intention of releasing this VMWare image. Its really there so you guys can get it and check it out. I personally don't believe in running such services on a virtual machine (too many nightmare stories from the 'day job' from such things) However, for testing and developing applications that ride on top of FreeSWITCH, this is a quick way to get up and running. Remember Voice application especially where you are interacting with the media streams will be affected by latency and jitter much more readily then store and forward things like IRC, Web, eMail and instant messaging. K On 1/15/09 2:12 PM, "Gregory Boehnlein" <damin@nacs.net> 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.
participants (3)
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Gregory Boehnlein
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Ken Rice
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Michael Jerris