Asterisk: The Definitive Guide
by L. Madsen, R. Bryant, J. V. Meggelen
Publisher: O'Reilly Media 2011
This bestselling guide provides a complete roadmap for installing, configuring, and integrating this powerful software with existing phone systems. It has everything you need to know to design a complete VoIP or analog system with little or no Asterisk experience, and no more than rudimentary telecommunications knowledge.
Download or read it online for free here:
by Bruce Kushnick - New Networks Institute
Bruce Kushnick, a telecom analyst for 15 years, spent seven years writing his 'unauthorized biography' of the Bell telephone monopolies. His 464-page manuscript exposes how the Baby Bells have been ripping us off since they were born in 1984.
by Leif Madsen, Russell Bryant - O'Reilly Media
Asterisk has a wealth of features to help you customize your PBX to fill specific business needs. This short cookbook offers recipes for tackling dialplan fundamentals, making and controlling calls, and monitoring channels in your PBX environment.
by Margit Brandl, at al. - TERENA
This is a reference document addressing technical issues for the setup of IP Telephony solutions. Its goal is to provide the user community with guidelines and information about the IP Telephony world and everything related to it.
by Shigeru Kashihara - InTech
This book provides a collection of 15 excellent studies of Voice over IP (VoIP) technologies. The authors of these studies introduce research strategies that address various issues with the aim of enhancing VoIP quality.