Chapter 1, Architecture of FreeSWITCH, gives a brief, but thorough introduction to the underlying architecture of FreeSWITCH.
Chapter 2, Building and Installation, shows how to download and install FreeSWITCH on Windows and Unix-like operating systems.
Chapter 3, Test Driving the Example Configuration, provides a hands-on look at the powerful and feature-rich example FreeSWITCH configuration.
Chapter 4, User Directory, SIP, and Verto, offers an introduction to the concept of users and the directory as well as a brief look at SIP and Verto user agents.
Chapter 5, WebRTC, SIP, and Verto, introduce WebRTC and its FreeSWITCH implementation, for both SIP and Verto signaling protocol, with an example web video conferencing application written for both protocols.
Chapter 6, XML Dialplan, explains the basic dialplan concepts and how to create and edit extensions to add advanced functionality to a FreeSWITCH install.
Chapter 7, Phrase Macros and XML IVRs, discusses how to create menus and sound phrases for interacting with callers as well as the useful Phrase Macro system.
Chapter 8, Lua FreeSWITCH Scripting, introduces the concept of advanced call handling using the lightweight scripting language Lua.
Chapter 9, Dialplan in Deep, builds upon the foundation laid in Chapter 6, and shows how to handle more challenging routing scenarios.
Chapter 10, Dialplan, Directory, and ALL via XML_CURL and Scripts, discusses how to configure and control FreeSWITCH dynamically, such as from a database.
Chapter 11, ESL - FreeSWITCH Controlled by Events, introduce Event System and Event Socket Library, how to tap into FreeSWITCH internal messaging bus to interact with calls in real time.
Chapter 12, HTTAPI - FreeSWITCH Asks Webserver Next Action, explains how to have FreeSWITCH to interrogate a webserver in real time at each step of a call interaction: a handy way to create IVRs.
Chapter 13, Conferencing and WebRTC Video-Conferencing, discusses how to create and manage audio and video conferences that allows for legacy, mainstream and WebRTC users to interact and collaborate. Also shows the special advanced features of Verto Communicator, our sleek Web Real Time Communication client.
Chapter 14, Handling NAT, provides much needed insight into understanding how NAT causes issues with SIP and how to work around them.
Chapter 15, VoIP Security, offers suggestions on how to secure VoIP communications from prying eyes as well as securing a FreeSWITCH server against various attacks.
Chapter 16, Troubleshooting, Asking for Help, and Reporting Bugs, shows how to find out what's wrong when you encounter a problem, how to interact with the wonderful FreeSWITCH community for getting help, and what to do when you think you've hit a bug.
