Asterisk Cookbook Author:Jim Van Meggelen, Leif Madsen, Kristian Kielhofner, John Todd, Evan Henshaw-Plath "Asterisk Cookbook" contains recipes for getting more out of Asterisk--an open source PBX telephony system than runs on Linux. This Cookbook covers installing, configuring, and integrating Asterisk with existing phone systems, without the need for additional hardware.