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FreeSWITCH Cookbook

4.5 (8)

FreeSWITCH Cookbook

4.5 (8)

Overview of this book

FreeSWITCH is an open source telephony platform designed to facilitate the creation of voice, chat, and video applications. It can scale from a soft-phone to a PBX and even up to an enterprise-class softswitch.In the FreeSWITCH Cookbook, members of the FreeSWITCH development team share some of their hard-earned knowledge with you in the book's recipes. Use this knowledge to improve and expand your FreeSWITCH installations.The FreeSWITCH Cookbook is an essential addition to any VoIP administrator's library.The book starts with recipes on how to handle call routing and then discusses connecting your FreeSWITCH server to the outside world.It then teaches you more advanced topics like CDR handling, practical examples of controlling FreeSWITCH with the event socket, and configuring many features commonly associated with a PBX installation.

FreeSWITCH Cookbook

FreeSWITCH Cookbook

Credits

Credits

About the Authors

About the Authors

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Preface

Free Chapter

Routing Calls

Routing Calls

Introduction

Internal calls

Incoming DID 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 To: headers on registered endpoints to reflect DID numbers

Connecting Telephones and Service Providers

Connecting Telephones and Service Providers

Introduction

Configuring a SIP phone to register with FreeSWITCH

Connecting audio devices with PortAudio

Using FreeSWITCH as a softphone

Configuring a SIP gateway

Configuring Google Voice

Codec configuration

Processing Call Detail Records

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

External Control

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

PBX Functionality

PBX Functionality

Introduction

Creating users

Accessing voicemail

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

Listening to live calls with telecast

Recording calls

Index

Index

Using the event socket to handle CDRs

Sometimes you need to get CDR information immediately. FreeSWITCH accommodates those needs with the powerful event socket. This recipe will briefly describe how to receive CDR information on the event socket. You will also find more useful information on the event socket interface in the following chapter.

Getting ready

This recipe relies on the event socket interface to FreeSWITCH. However, there are many different ways of connecting to the event socket. Because of this we will use a simple Perl script with the event socket library (ESL) to demonstrate the principles involved. Any language that supports ESL can use the techniques demonstrated here.

Follow the steps in the Setting up the event socket library recipe found in Chapter 4. Specifically, build the Perl module in order to run the example script.

How to do it...

Enter this script (or download it from the Packt website at http://www.packtpub.com):

#!/usr/bin/perl
# handle_cdr.pl 
# Connect to event...

Visually different images

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83

Tech Concepts

36

Programming languages

73

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