Media praise for Asterisk: The Future of Telephony
"The book is useful and necessary to any IT department involved in an analog to digital conversion of telecom systems, as it not only covers Asterisk specific features but also touches upon important VoIP subjects codecs, security and echo. Like other OReilly productions, it complements Asterisks documentation in the way that a great teacher can make any subject interesting, and approachable. Tricks of the trades are aplenty, as are useful warnings. The global switch to VoIP is well underway. This book should undoubtedly follow anybody that is taking on such an endeavor. "
-- , neutrality.ca