asterisk users - Apr 2005 - I wanted to understand

Hello all,

I am new to Asterisk and I tried a basic configuration with 2 SIP phones
(FCI IP Ranger), and it works very well !!
I wanted to understand furthermore the asterisk product, his technical
architecture, and after that try to understand how to add
functionnalities thanks to te API. I have read that there are existing
APIs, but I didn't find any documentation on how to use them ! Can
someone direct me to some URLs ? Or tell me how to try to begin to
understand the code ?

Thank you very much for advance for your responses !

> someone direct me to some URLs ? Or tell me how to try to begin to
> understand the code ?
Check out;

http://www.asterisk.org/
http://www.voip-info.org/wiki-Asterisk