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  • Freeswitch 1.6 Cookbook
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Freeswitch 1.6 Cookbook

Freeswitch 1.6 Cookbook

By : Anthony Minessale II, Giovanni Maruzzelli
5 (3)
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Freeswitch 1.6 Cookbook

Freeswitch 1.6 Cookbook

5 (3)
By: Anthony Minessale II, Giovanni Maruzzelli

Overview of this book

FreeSWITCH 1.6 Cookbook is written for anyone who wants to learn more about using FreeSWITCH in production. The information is presented in such a way that you can get up and running quickly. The cookbook approach eschews much of the foundational concepts, and instead focuses on discrete examples that illustrate specific features. If you need to implement a particular feature as quickly as possible, then this book is for you.
Table of Contents (9 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Sections
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Routing Calls
1. Routing Calls
Introduction
Internal calls
Incoming DID (also known as DDI) calls
Outgoing calls
Ringing multiple endpoints simultaneously
Ringing multiple endpoints sequentially (simple failover)
Advanced multiple endpoint calling with enterprise originate
Time-of-day routing
Manipulating SIP To: headers on registered endpoints to reflect DID numbers
2
2. Connecting Telephones and Service Providers
2. Connecting Telephones and Service Providers
Introduction
Configuring an SIP phone to register with FreeSWITCH
Connecting to Skype
Configuring an SIP gateway
Codec configuration
3
3. Processing Call Detail Records
3. Processing Call Detail Records
Introduction
Using CSV CDRs
Using XML CDRs
Inserting CDRs into a backend database
Using a web server to handle XML CDRs
Using the event socket to handle CDRs
Directly inputting CDRs into various databases in real time
4
4. External Control
4. External Control
Introduction
Getting familiar with the fs_cli interface
Setting up the event socket library
Establishing an inbound event socket connection
Establishing an outbound event socket connection
Using fs_ivrd to manage outbound connections
Filtering events
Launching a call with an inbound event socket connection
Using the ESL connection object for call control
Using the built-in web interface
5
5. PBX Functionality
5. PBX Functionality
Introduction
Creating users
Accessing voicemail
The company directory
Using phrase macros to build sound prompts
Creating XML IVR menus
Music on hold
Creating conferences
Sending faxes
Receiving faxes
Basic text-to-speech with mod_flite
Advanced text-to-speech with mod_tts_commandline
Recording calls
6
6. WebRTC and Mod_Verto
6. WebRTC and Mod_Verto
Introduction
Configuring FreeSWITCH for WebRTC
SIP signaling in JavaScript with SIP.js (WebRTC client)
Verto installation and setup
Verto signaling in JavaScript using Verto.js (Verto client)
7
7. Dialplan Scripting with Lua
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7. Dialplan Scripting with Lua
Introduction
Creating a basic Lua script
User interaction and DTMF gathering
Using conditionals, loops, web calls, and regular expressions
Connecting to an external database
8
Index
Index

Introduction

An XML dialplan is the standard and most efficient way to describe how a call must be handled by FreeSWITCH. There are cases where you need loops, conditionals, and other call handling logic that is not easily expressed in XML. Enter scripting, and you can use your programming language of choice.

FreeSWITCH supports many scripting languages (almost all of them). These languages also allow you to use the same primitives and access the same variables, so they're all functionally equivalent. The difference lies in their efficiency and their ability to embed, for example, how much CPU they consume, and how much RAM they need to execute the same call logic.

FreeSWITCH's most efficient and embeddable scripting language is Lua (www.lua.org).

It is a very easy procedural language, reminiscent of C and Perl, so it will be immediately familiar to most of you.

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