[Freeswitch-users] Hardware phones that do 48Khz Celt: Was Re: Is there any license G729?

Steve Underwood steveu at coppice.org
Mon Sep 26 20:32:33 MSD 2011


On 06/30/2009 09:26 AM, Craig Askings wrote:
> Are there any hardware phones that support 48 Khz Celt and
> automated/mass deployment?
>
> Craig.
Most of the pure VoIP chipsets aren't capable of running at 48k 
samples/second, so off the shelf phone hardware platforms probably won't 
cut it. The phones with video capabilities might have 48k sample/second 
facilities.
> 2009/6/30 Jason White<jason at jasonjgw.net>:
>> Brian West<brian at freeswitch.org>  wrote:
>>> Everyone has this need for lower bandwidth calls... I tend to march the
>>> other way. 48kHz baby!  (btw you can do 48kHz in the same bandwidth as a
>>> single ulaw call)
>> 48khz Celt (celt at 48000 in your codec preferences) sounds wonderful with
>> FreeSWITCH. To test, run two FreeSWITCH instances, both with mod_portaudio.
>> This also works well in 48khz conferences.
>>
>> I wouldn't use G.729 even if it weren't encumbered by patents - it's G.711,
>> G.722, G.722.1 and (my current favourite) Celt all the way.
Steve




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