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

User Directory concepts


The User Directory is a (possibly big and complex) XML document that is accessed by FreeSWITCH and all of its modules whenever they need to know about users' attributes. It is in the User Directory that the user's password, which groups (if any) the user belongs to, various and arbitrary variables and parameters related to the user or to the group, and so on are defined.

Each time the FreeSWITCH core or one of its modules needs such an information, it will issue an internal request. That internal request will use one of many different methods to end up with an XML snippet that defines the information requested. So, that XML snippet can be the result of a query to a database or to a webserver, or it can be built starting from the XML tree FreeSWITCH composed in its own memory at startup based on the configuration XML documents found on the filesystem.

In this chapter we'll mostly look at the User Directory we find on the filesystem after a default fresh install, in the...