This book is a step-by-step tutorial with clear instructions and screenshots to guide you through the creation of a complete, cost-effective telephony system. With its "follow-along" style, you will start with installation, walk through the different features, see how to manage and maintain the system, and finally see how all the different pieces come together. If you want to learn how to install and configure either trixbox CE systems or Asterisk-based PBX systems, without struggling with confusing configuration files and cryptic scripts, this is "the" book for you. This book will also benefit readers who use trixbox CE and want to learn all its features, and how best to use them. It is ideal for any user wishing to set up a telephony system for small business usage. No previous knowledge of Trixbox or networking is required, although some basic knowledge of PBX and Linux would be an advantage.