[Freeswitch-users] softphones and background noise

Andrew Cassidy andrew at cassidywebservices.co.uk
Tue Jun 26 19:10:47 MSD 2012


Hi Juan,

For the benefit of anyone else that has the same problem in the future, do
you know which settings helped the most?

On 26 June 2012 15:27, Juan Pablo L. <jpablolorenzetti at hotmail.com> wrote:

>
> thanks Eugene for all these suggestions, i followed them and they helped a
> lot.
> the situation has improved and i think i found the root cause of this
> issue in the softphones.
> thanks everybody for all your help.
>
> ----------------------------------------
> > Date: Tue, 26 Jun 2012 09:32:57 +0300
> > From: shcherbatyuk at belrosbank.by
> > To: freeswitch-users at lists.freeswitch.org
> > Subject: Re: [Freeswitch-users] softphones and background noise
> >
> > Hello,
> >
> > We had a number of sound quality issues with our softphones. We could
> > decuce some causes for that. Often quality of sound was affected by a
> > combination of them. Here is a something like a checklist:
> >
> > -- Softphone codec implementation is not that great. (Try different
> > codecs and/or softphones)
> > -- Softphone echo cancellation introduces noise (turn off soft echo
> > cancellation)
> > -- Transcoding issues at the softphone side.
> > -- Number and order of softphone codecs are different from these of VOIP
> > server (make them the same);
> > -- Noise is generated due to sound card/OS sound equalizer(mixer)
> > misconfiguration (turn off any effects, see that mic is not echoed to
> > speakers, etc., etc., etc.)
> > -- User PC is overloaded ('weak' CPU, little of RAM, RAM spooling, too
> > many open windows/processes, greedy antiviral software etc.)
> > -- Weared out and/or buggy headsets.
> >
> > Hope this will help.
> >
> >
> > On 25/06/12 19:19, Juan Pablo L. wrote:
> >>
> >>
> >> Good morning, i m having lots of issues with softphones, when a call
> >> is initiated/terminated to a softphone the background noise is too
> >> high that you can hardly hear the actual voice. i have played around
> >> with VAD and CNG turning them on and off in the profile and/or the
> >> dialplan but i have not had any luck. it does not matter if the call
> >> is internal or goes through a gateway, it is however, worse when it
> >> goes through a gateway, those are the cases you can not even hear the
> >> voice for so much noise and when the call is to a next extension the
> >> background noise is high but not as high. But, if you
> >> initiate/terminate the call to a hardphone (like polycom phones) the
> >> call is perfectly clear in all cases (except when the other end is an
> >> internal softphone). can someone please give me a hint. thanks a
> >> lot!
> >
> >
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-- 
*Andrew Cassidy BSc (Hons) MBCS SSCA*
Managing Director


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