Book Image

FreeSWITCH 1.0.6

Book Image

FreeSWITCH 1.0.6

Overview of this book

FreeSWITCH is an open source telephony platform designed to facilitate the creation of voice and chat-driven products scaling from a soft-phone to a PBX and even up to an enterprise-class soft-switch. It is always exciting to design and build your own telephony system to suit your needs, but the task is time consuming and involves a lot of technical skills.This book comes to your rescue, helping you to set up a telephony system fast and easily using FreeSWITCH. It will take you from being a novice to creating a fully-functional telephony system of your own. It is rich with practical examples and will give you all of the information and skills needed to implement your own PBX system.The book begins by introducing the architecture and working of FreeSWITCH before detailing how to plan a telephone system and moving on to the installation, configuration, and management of a feature-packed PBX. You will learn about maintaining a user directory, XML dial plan and advanced dial plan concepts, call routing, and the extremely powerful Event Socket. You will finally learn about the online community and history of FreeSWITCH.
Table of Contents (18 chapters)
FreeSWITCH 1.0.6
Credits
About the Authors
About the Reviewer
Preface
The History Of FreeSWITCH
Index

General Dialplan concepts


In general, a Dialplan helps generate a list of actions to take so that a caller can reach the person or people they want to talk to. A Dialplan module implements the decision-making process that powers this. While a Dialplan module is free to implement any concept it wants for organizing how calls are routed, three concepts, in particular, are generally used when processing a call. These three concepts can be broken down by asking the same three questions for every call:

  • Contexts: Where do we look for a general list of destinations (or features) that the current caller is allowed to reach?

  • Conditions: Whom, specifically, is the caller trying to reach?

  • Actions: What actions need to be taken to reach that party?

These three questions are generally answered by breaking routing decisions into three concepts—caller context, condition matching, and actions. These concepts are not necessarily unique to FreeSWITCH. We'll explore each of these concepts individually in this...