Re: [Linphone-users] general questions

[Simon Morlat]

Hi,

Le ven 26/07/2002 à 17:51, Stephane Rossi a écrit :
> Hi everybody,
> 
> Im a newbie in the world of VoIP and i have some questions very general, 
> maybe you could help for some or give me addresses for tutorials :
> 
> Question 1 :
> I want to be sure that I understand well :
> 
> Voice   -->   Conversion-Analogical-Digital  -->  Compression (GSM ... see 
> 2nd question)  --> RTP (encap.)  --> UDP  --> IP
> 
> And the SIP protocol take care of all the sessions controls etc ...
> But actually i don't really where to put this SIP.
That's right. Sip operates on a different port.
> 
> Question 2 :
> I make some searches on the different codec as GSM etc ... I found the GSM 
> codec that seems to be good for my work, but I'm asking questions about how 
> much does it take for load CPU.
> Do you know where i can find some test on this subject ?
The GSM codec consumes very few CPU (5% on PII 433 Mhz).
> 
> Question 3 :
> I found nothing about how to use codec, so for now i'm trying to understand 
> the Linphone code but do you know an address about this ?
> 
Understanding on the CVS code will be easier. A lot of cleanups have
been made and the audio/codec/rtp architecture is much more clean than
on previous version. Instructions on for retrieving CVS are on
http://savanah.gnu.org/projects/linphone

Simon
> 
> 
> Sorry to bother you with this knid of questions,
> 
> Thanks,
> 
> Steph
> 
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