Design a complete Voice over IP (VoIP) or traditional PBX system with Asterisk, even if you have only basic telecommunications knowledge. This bestselling guide makes it easy with a detailed roadmap that shows you how to install and configure this open source software, whether you're upgrading your existing phone system or starting from scratch.
Ideal for Linux administrators, developers, and power users, this updated fifth edition shows you how to write a basic dialplan step-by-step and brings you up to speed on the features in Asterisk 16, the latest long-term support release from Digium. You'll quickly gain working knowledge to build a simple yet inclusive system.

• Integrate Asterisk with analog, VoIP, and digital telephony systems
• Build an interactive dialplan using best practices for more advanced features
• Delve into voicemail options such as storing messages in a database
• Connect to external services including Google Hangouts, XMPP, and calendars
• Incorporate Asterisk features and functions into a relational database to facilitate information sharing
• Learn how to use Asterisk's security, call routing, and faxing features
• Monitor and control your system with the Asterisk Manager Interface (AMI)