Book Image

FreeSWITCH 1.8

By : Anthony Minessale II, Giovanni Maruzzelli
Book Image

FreeSWITCH 1.8

By: Anthony Minessale II, Giovanni Maruzzelli

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. This book introduces FreeSWITCH to IT professionals who want to build their own telephony system. This book starts with a brief introduction to the latest version of FreeSWITCH. We then move on to the fundamentals and the new features added in version 1.6, showing you how to set up a basic system so you can make and receive phone calls, make calls between extensions, and utilize basic PBX functionality. Once you have a basic system in place, we’ll show you how to add more and more functionalities to it. You’ll learn to deploy the features on the system using unique techniques and tips to make it work better. Also, there are changes in the security-related components, which will affect the content in the book, so we will make that intact with the latest version. There are new support libraries introduced, such as SQLite, OpenSS, and more, which will make FreeSWITCH more efficient and add more functions to it. We’ll cover these in the new edition to make it more appealing for you.
Table of Contents (23 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Contexts


Dialplan can have different sections, named contexts, which are completely separated from each other. Because of this separation, contexts can be used to implement a multitenant system (one only FreeSWITCH serving both companyA and companyB, without worries about extensions overlapping).

Based on where the call come from (that is, which protocol, network interface, or port) or based on an explicit "context attribute" of the user originating the call, the incoming call is "sent" to a specific dialplan context. At the end of that context the call exits the dialplan.

Contexts are so much separated one from each other that often people talks about different dialplans, while actually they mean different contexts. Formally there is only one dialplan, the XML one. For all practical purposes, you too can think of different contexts as different dialplans. That's OK, we all do.

There are three contexts in the demo configuration you get out of the box after a fresh FreeSWITCH installation (you...