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You're reading from FreeSWITCH 1.8 Get to grips with VoIP and WebRTC communication and quickly build robust telephony systems with FreeSWITCH

Product type Paperback

Published in Jul 2017

Publisher Packt

ISBN-13 9781785889134

Length 434 pages

Edition 1st Edition

Tools

FreeSWITCH

Concepts

Networking

Authors (2):

Anthony Minessale II

Giovanni Maruzzelli

View More author details

Table of Contents (17) Chapters

Preface

1. Architecture of FreeSWITCH FREE CHAPTER

2. Building and Installation

3. Test Driving the Example Configuration

4. User Directory, SIP, and Verto

5. WebRTC, SIP, and Verto

6. XML Dialplan

7. Phrase Macros and XML IVRs

8. Lua FreeSWITCH Scripting

9. Dialplan in Deep

10. Dialplan, Directory, and ALL via XML_CURL and Scripts

11. ESL - FreeSWITCH Controlled by Events

12. HTTAPI - FreeSWITCH Asks Webserver Next Action

13. Conferencing and WebRTC Video-Conferencing

14. Handling NAT

15. VoIP Security

16. Troubleshooting, Asking for Help, and Reporting Bugs

Summary

In this chapter, we've identified the pitfalls of NAT and if even one reader is spared the searing pain caused by a first encounter with an ALG or NAT router then our journey into madness was not in vain.

We've also covered most of the options you have in FreeSWITCH to mitigate NAT-related problems. Before we move on to VoIP security, I'll leave you with a few more tips so hopefully you will get things working even when plagued by NAT. The following are the tips you should remember:

Learn the four pitfalls of NAT and keep your eyes open for them
It's very easy to get distracted and fall prey to one of the pitfalls. If you notice it's taking too long, start over and make sure that you haven't made a mistake somewhere that is leading you astray.
Try to make the least changes necessary to get NAT working
The more you mess with NAT settings,...

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Authors (2)

Anthony Minessale II

Anthony Minessale II is the primary author and founding member of the FreeSWITCH Open Source Soft-Switch. Anthony has spent around 20 years working with open source software. In 2001, Anthony spent a great deal of time contributing code to the Asterisk PBX and has authored numerous features and fixes to that project. In 2005, Anthony started coding a new idea for an open source voice application. The FreeSWITCH project was officially open to the public on January 1 2006. In the years that followed, Anthony has been actively maintaining and leading the software development of the FreeSWITCH project. Anthony also founded the ClueCon Technology Conference in 2005, and he continues to oversee the production of this annual event. Anthony has been the author of several FreeSWITCH books, including FreeSWITCH 1.0.6, FreeSWITCH 1.2, FreeSWITCH Cookbook, FreeSWITCH 1.6 Cookbook, and Mastering FreeSWITCH

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Giovanni Maruzzelli

Giovanni Maruzzelli (gmaruzz@OpenTelecom.IT) is heavily engaged with FreeSWITCH. In it, he wrote a couple of endpoint modules, and he is specialized in industrial grade deployments and solutions. He's the curator and coauthor of FreeSWITCH 1.6 Cookbook (Packt Publishing, 2015), and of Mastering FreeSWITCH (Packt Publishing, 2016) He's a consultant in the telecommunications sector, developing software and conducting training courses for FreeSWITCH, SIP, WebRTC, Kamailio, and OpenSIPS. As an Internet technology pioneer, he was the cofounder of Italia Online in 1996, which was the most popular Italian portal and consumer ISP. Also, he was the architect of its Internet technologies Italia Online (IOL). Back then, Giovanni was the supervisor of Internet operations and the architect of the first engine for paid access to il Sole 24 Ore, the most-read financial newspaper in Italy, and its databases (migrated from the mainframe). After that, he was the CEO of the venture capital-funded company Matrice, developing telemail unified messaging and multiple-language phone access to e-mail (text to speech). He was also the CTO of the incubator-funded company Open4, an open source managed applications provider. For 2 years, Giovanni worked in Serbia as an Internet and telecommunications investment expert for IFC, an arm of the World Bank. Since 2005, he has been based in Italy, and he serves ICT and telecommunication companies worldwide.

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