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This book takes you from zero knowledge of telephony through advanced production administration of Asterisk, the world's most widely deployed open-source communications platform. You will learn to install, configure, secure, and operate Asterisk as a full-featured PBX with SIP trunking, voicemail, IVR menus, call queues, conferencing, recording, APIs, and high availability. Every concept is explained before it is used, every configuration file is annotated in detail, and every procedure includes exact commands, expected outputs, and troubleshooting guidance. Whether you are deploying your first office phone system or architecting a multi-site enterprise solution, this book serves as both a learning resource and a long-term reference manual.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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