Hi , i think it was a combination of factors: 1. reordering the codecs in the softphones, so for example, i noticed my gateway always uses GSM 8K so i made the softphone send that codec at the top of its list 2. removing echo cancelling (and/or reduce background noise) on the softphone helped too 3. lowering the mic volume helped too. i hope this helps. regards and thanks for all your help. ________________________________
Date: Tue, 26 Jun 2012 16:10:47 +0100 From: andrew@cassidywebservices.co.uk To: freeswitch-users@lists.freeswitch.org Subject: Re: [Freeswitch-users] softphones and background noise
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@hotmail.com<mailto:jpablolorenzetti@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.
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Date: Tue, 26 Jun 2012 09:32:57 +0300 From: shcherbatyuk@belrosbank.by<mailto:shcherbatyuk@belrosbank.by> To: freeswitch-users@lists.freeswitch.org<mailto:freeswitch-users@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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