As a Private Branch Exchange (PBX) which connects one or more telephones, and usually connected to one or more phone lines, Asterisk offers very advanced features, including call-to-extension extensions, queues, ring groups, line trunking, call distribution, call rerecords detail, and recording the call. This book will show you how to build a telephone system for your home or business using open source applications. Through this book you will learn how to connect employees from around the world and streamline your callers through Auto Shaman (IVR) and Ring Group. This book is all you need to understand and use Asterisk to build a phone system that meets your needs. During the ten chapters, this book introduces you to different topics such as the Public Switched Telephony Network (PSTN), Voice over IP connection (SIP / IAX), DAHDI, libpri, up to advanced call distribution, automated assistant, FreePBX, and asterCRM. With attractive style and excellent way of presenting information, this book makes complicated subjects easy to understand. What you will learn from this book? Install, configure and use Asterisk to build feature-packed phone FreePBXConnect systemInstall and using your Asterisk server with your phone service (via the PSTN, SIP, etc.) and learn to use some basic features such as queuing PBX, voicemail and music on holdDetermine how to call routed through the Asterisk server by creating extensions dialplanCreate, distribute calls regularly use the queue, and callers attended by officers using automatic speech (IVR) Install and learn how to monitor, record, and capture the detailed call logsInstall and use asterCRM (customer relationship management solution) to streamline your business operationsGain knowledge about security measures, recommendations and tips for distributing network maintenance such as backup and disaster recovery plans prepared to keep the system running smoothly and safely Asterisk Approach This book offers the reader both a detailed explanation and step by step instructions on how to use software solution and the Asterisk configuration. For Asterisk configuration example code is actually registered in the books that can be directly inserted into your Asterisk solution. Who is this book written for? This book is intended for anyone who is interested in establishing a strong telephone system using free and open source application, Asterisk, without spending thousands of dollars buying a commercial system and are often less flexible. This book is suitable for beginners and those new to Asterisk and the phone.