Re: [GnomeMeeting-list] fresh new CVS snaps =)

[michel memeteau <mmemeteau marseille-wireless org>]

Thanks for those precisions , I understand why a SIP registrar would use G711 ,
I did not now that we could use Fax over G711 but I understand it because it s
a lassless codec ( not sure about that ) ..  I gave a try to Sjphone , but it s
a bit limited I guess .... Can you phone a PSTN with it ?? 

Another question : is this ISAC codec free as ILBC , did skype change the
default codec ....  I thought they were using only ILBC at first .....

Quoting Stefan Bruens <lurch gmx li>:
> 
> There are good reasons to use G.711:
> Low complexity - modern, high efficient codecs use a lot of computing power,
> 
> so if you want to do a lots of channels, you have to trade bandwith for low 
> complexity. Especially Speex needs a lot of cpu power ...
> High quality - if you are providing a PSTN gateway, you want to have the best
> 
> possible narrowband codec - and G.711 is your choice then. Even the best 
> modern codecs will give a (unnoticeable) worse quality.
> Fax transparency - G.711 is the only codec you can transfer Fax over 
> transparently.
> Low latency - if you dont care about bandwith, G.711 gives you the lowest 
> latency
> 
> Greetings,
> 
> Stefan
> 
> -- 
> Stefan Brüns  /  Kastanienweg 6 - Zimmer 1206  /  52074 Aachen
> mailto:lurch gmx li  http://www.kawo1.rwth-aachen.de/~lurchi/
>    phone: +49 241 169-4206     mobile: +49 160 3797725
> 


-- 
Michel memeteau
0624808051
jabber : freechelmi
www.marseille-wireless.org

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