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

Using phrases with IVRs


You may have noticed that the greet-long and greet-short options in the examples use phrase:demo_ivr_main_menu as opposed to a specific sound filename and path. IVRs allow you to specify sound files using the phrase and Text-To-Speech macros. This is useful for several reasons; most notably the ability to chain together multiple sounds into one phrase and the ability to have different languages presented to the caller, based on the caller's information.

Calling Phrase Macros

Phrase Macros can be called from the Dialplan, from an IVR, or from a Dialplan script (such as Lua script, which is discussed in the next chapter). The latter will be covered in the next chapter. Phrase Macros can be used virtually in all places where a sound filename can be used. Phrase Macros are used only for playback purposes, so they cannot be used when specifying a filename for a recording operation. We have already seen examples of using phrases in our XML IVR configuration files. The following...