what i need to start to use asteriks?, I just download the latest version? and install it?, or I need something else to make it work? is there some document guide about this?, please I need help.
In advance, thanks 
One of the easiest walk throughs I’ve found is here:
http://www.voip-info.org/wiki-Asterisk+Fedora+Core+3
You can download Asterisk from the front page of http://www.asterisk.org.
Follow the directions on the first link and off you go!
Good luck!
Tom