![it46 phone](http://vds78676.nfrance.com/i6net/wp-content/uploads/2008/01/it46.jpg)
We recommend strongly to read this PDF book from IT+46 about the VOIP and Asterisk! A very helpful and interesting introduction to the New Generation Network Telephony…
Dowloadable in English, French, Spanish, Arabic
VOIP or the Voice Infrastructure Freedom:
http://www.it46.se/voip4d/pressrelease_voip4d.php