Book Image

FreeSWITCH 1.2 - Second Edition

Book Image

FreeSWITCH 1.2 - Second Edition

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 skill."FreeSWITCH 1.2" comes to your rescue to help you set up a telephony system quickly and securely using FreeSWITCH. It is rich with practical examples and will give you all of the information and skills needed to implement your own PBX system.You will start with a detailed description of the FreeSWITCH system architecture. Thereafter you will receive step-by-step instructions on how to set up basic and advanced features for your telephony platform.The book begins by introducing the architecture and workings of FreeSWITCH before detailing how to plan a telephone system and then moves 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."FreeSWITCH 1.2" is an indispensable tool for novice and expert alike.
Table of Contents (24 chapters)
FreeSWITCH 1.2
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Sending events


You can send events into the FreeSWITCH core via mod_event_socket over the same TCP connection you receive events over (the connection is bi-directional). All commands are formatted with a command name and arguments. Some commands require additional fields after the command itself. The formatting for additional fields when you send events is similar to the format you use when you receive events. You send FreeSWITCH a list of key/value pairs specifying the event name and specific flags related to the event, and FreeSWITCH injects the message into the event subsystem for modules or the FreeSWITCH core to handle.

An example of a basic command is as follows:

api sleep 5000

This would run the API command sleep and pass it the argument 5000, causing the system to sleep for five seconds.

A more complicated example might be injecting messages directly into the FreeSWITCH event queue system. You can inject events into the FreeSWITCH system with the sendevent command, followed by associated...