Re: [GnomeMeeting-list] cvs version

[Damien Sandras <dsandras seconix com>]

Le dim 08/02/2004 à 15:10, daniel huhardeaux a écrit :
> I gave it a try. Attached is openphone trace file. Codec use is 
> G729.A{sw} data 6 frames
> 
> 

Indeed, that's Voice Age codec. I think that codec costs 10 dollars
under Linux, but it doesn't work "yet" with GnomeMeeting. That will be
on the TODO list after 1.00.

>  From Craig:
> 
> OpenPhone can do G.729 if you download and recompile with the VoiceAge
> G.729 demonstration codec which is available only on Windows. Both GM
> and OpenPhone can do G.723.1 if you use a Quicknet card
> 
> 
> Attached file with G729A codec comes from openphone used through wine on 
> a *fake* windows installation. I just copy openphone.exe (stock version 
> windows binary downloaded from openh323.org), PTLib PWLib openH323 and 
> msvcirt.dll So it's msvcirt.dll who provide this codec? Or it's included 
> in openphone?
> 

I have personally no idea, but perhaps Craig can answer.

> I didn't use any quicknet card as I just want to be able to connect to 
> normal phone stations from my laptop from _everywhere_ or  from my 
> workstations without having to connect any phone device

The problem is that most providers permitting to call phone stations are
using proprietary and patented codecs like G.723.1 and G.729. They do
not allow free codecs (like GSM for example) to be used. That's a shame,
but that is the current situation. 

G.723.1 doesn't exist at all on linux, so the only way to make it work
is to use a Quicknet card where the codec exists as hardware. G.729A
exists for Linux, and it costs 10 dollars. Craig has been working on a
system in openh323 permitting to download codecs plugins, so we might be
able to "sell" G.729 plugins for gnomemeeting. 

I don't how people would react to this. I don't know either if it is a
good idea, but it seems to be the only way to be able to communicate
with hardware and software from the "other world" without any problem.

Notice there is also another solution, and it is breaking the patents,
but I'm not ready to take such a risk as I would have no way to react
and to defend myself in case of problems. So perhaps the idea of
proprietary plugins for people who want them could be the best... If
people here have an opinion, just talk :)
-- 
 _      Damien Sandras
(o-     
//\     It-Optics s.a.
v_/_    GnomeMeeting: http://www.gnomemeeting.org/
        FOSDEM 2004:  http://www.fosdem.org
        H.323 phone:  callto:ils.seconix.com/dsandras seconix com