FreeSWITCH Cookbook

FreeSWITCH Cookbook

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

Credits

About the Authors

About the Reviewers

www.PacktPub.com

Preface

Free Chapter

Routing 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

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

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

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

Using phrase macros to build sound prompts

Creating XML IVR menus

Basic text-to-speech with mod_flite

Advanced text-to-speech with mod_tts_commandline

Listening to live calls with telecast

Recording calls

Index

Customer Reviews

5 star

4 star

3 star

2 star

1 star

Using FreeSWITCH as a softphone

The previous recipe described the process of setting up FreeSWITCH to use a local audio device such as a USB headset or a sound card. This recipe builds on the previous one by showing you how to use a custom FreeSWITCH configuration that is tailored specifically for use as a softphone (be sure to have PortAudio working before trying this recipe). Lastly, we will direct your attention to a few open source softphone projects that utilize FreeSWITCH as the VoIP engine.

Getting ready

This operation requires that we download a preconfigured FreeSWITCH configuration file. Follow these steps:

Stop FreeSWITCH with this command:
```
freeswitch –stop
```
Back up your existing configuration (if desired). In a Linux/Unix environment a command like this would suffice:
```
mv /usr/local/freeswitch/conf /usr/local/freeswith/conf.bak
```
Windows users can use the File Manager to rename the conf folder.
You can retrieve the softphone configuration from the FreeSWITCH sample configs git repository...

FreeSWITCH Cookbook

FreeSWITCH Cookbook

Overview of this book

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FreeSWITCH Cookbook

Using FreeSWITCH as a softphone

Getting ready