It may be a while before Internet telephony with VoIP (Voice over Internet Protocol) reaches critical mass, but there's already tremendous movement in that direction. A lot of organizations are not only attracted to VoIP's promise of cost savings, but its ability to move data, images, and voice traffic over the same connection. Think of it: a single Internet phone call can take information sharing to a whole new level.
That's why many IT administrators and developers are actively looking to set up VoIP-based private telephone switching systems within the enterprise. The efficiency that network users can reach with it is almost mind-boggling. And cheap, if the system is built with open source software like Asterisk. There are commercial VoIP options out there, but many are expensive systems running old, complicated code on obsolete hardware. Asterisk runs on Linux and can interoperate with almost all standards-based telephony equipment. And you can program it to your liking. 
Asterisk's flexibility comes at a price, however: it's not a simple system to learn, and the documentation is lacking. Asterisk: The Future of Telephony solves that problem by offering a complete roadmap for installing, configuring, and integrating Asterisk with existing phone systems. Our guide walks you through a basic dial plan step by step, and gives you enough working knowledge to set up a simple but complete system.
What you end up with is largely up to you. Asterisk embraces the concept of standards-compliance, but also gives you freedom to choose how to implement your system. Asterisk: The Future of Telephony outlines all the options, and shows you how to set up voicemail services, call conferencing, interactive voice response, call waiting, caller ID, and more. You'll also learn how Asterisk merges voice and data traffic seamlessly across disparate networks. And you won't need additional hardware. For interconnection with digital and analog telephone equipment, Asterisk supports a number of hardware devices. 
Ready for the future of telephony? We'll help you hook it up.

Asterisk: The Future of Telephony

Computers & Technology

Smith, Jared

Madsen, Leif

Van Meggelen, Jim

Web Development & Design

O'Reilly Media

This bestselling book is now the standard guide to building phone systems with Asterisk, the open source IP PBX that has traditional telephony providers running scared! Revised for the 1.4 release of the software, the new edition of Asterisk: The Future of Telephony reveals how you can save money on equipment and support, and finally be in control of your telephone system. If you've worked with telephony in the past, you're familiar with the problem: expensive and inflexible systems that are tuned to the vendor's needs, not yours. Asterisk isn't just a candle in the darkness, it's a whole fireworks show. Because Asterisk is so powerful, configuring it can seem tricky and difficult. This book steps you through the process of installing, configuring, and integrating Asterisk with your existing phone system. You'll learn how to write dialplans, set up applications including speech synthesis and voice recognition, how to script Asterisk, and much more -- everything you need to design a simple but complete system with little or no Asterisk experience, and no more than rudimentary telecommunications knowledge. The book includes:
<ul>
<li>A new chapter on managing/administering your Asterisk system</li>
<li>A new chapter on using Asterisk with databases </li>
<li>Coverage of features in Asterisk 1.4</li>
<li>A new appendix on dialplan functions</li>
<li>A simplified installation chapter</li>
<li>New simplified SIP configuration, including examples for several popular SIP clients (soft phones and IP telephones)</li>
<li>Revised chapters and appendicies reviewed and updated for the latest in features, applications, trends and best-practices</li>
</ul>Asterisk is revolutionizing the telecom industry, due in large part to the way it gets along with other network applications. While other PBXs are fighting their inevitable absorption into the network, Asterisk embraces it. If you need to take control of your telephony systems, move to Asterisk and see what the future of telecommunications looks like.

Meggelen, Jim Van

Computer Science

Design a complete VoIP or analog PBX with Asterisk, even if you have no previous Asterisk experience and only basic telecommunications knowledge. This bestselling guide makes it easy, with a detailed roadmap to installing, configuring, and integrating this open source software into your existing phone system.
Ideal for Linux administrators, developers, and power users, this book shows you how to write a basic dialplan step by step, and quickly brings you up to speed on the latest Asterisk features in version 1.8.
<ul>
<li>Integrate Asterisk with analog, VoIP, and digital telephony systems</li>
<li>Build a simple interactive dialplan, and dive into advanced concepts</li>
<li>Use Asterisk’s voicemail options—including a standalone voicemail server</li>
<li>Build a menuing system and add applications that act on caller input</li>
<li>Incorporate a relational database with MySQL and Postgre SQL</li>
<li>Connect to external services such as LDAP, calendars, XMPP, and Skype</li>
<li>Use Automatic Call Distribution to build a call queuing system</li>
<li>Learn how to use Asterisk’s security, call routing, and faxing features</li>
</ul>

Asterisk: The Definitive Guide (Definitive Guides)

Bryant, Russell

Networking & Cloud Computing

Asterisk has a wealth of features to help you customize your PBX to fill very specific business needs. This short cookbook offers recipes for tackling dialplan fundamentals, making and controlling calls, and monitoring channels in your PBX environment. Each recipe includes a simple code solution you can put to work immediately, along with a detailed discussion that offers insight into why and how the recipe works.
This book focuses on Asterisk 1.8, although many of the conventions and information presented are version-agnostic. These recipes include solutions to help you:
<ul>
<li>Authenticate callers before moving on in your dialplan</li>
<li>Redirect calls received by your auto-attendant</li>
<li>Create an automatic call-back service</li>
<li>Initiate hot-desking to login to and accept calls at any office device</li>
<li>Monitor and interrupt live calls to train new employees at a call center</li>
<li>Record calls from your Asterisk dialplan</li>
</ul>

Asterisk Cookbook: Solutions to Everyday Telephony Problems

Design a complete Voice over IP (VoIP) or traditional PBX system with Asterisk, even if you have only basic telecommunications knowledge. This bestselling guide makes it easy, with a detailed roadmap that shows you how to install and configure this open source software, whether you’re upgrading your existing phone system or starting from scratch.
Ideal for Linux administrators, developers, and power users, this updated edition shows you how to write a basic dialplan step-by-step, and brings you up to speed on the features in Asterisk 11, the latest long-term support release from Digium. You’ll quickly gain working knowledge to build a simple yet inclusive system.
<ul>
<li>Integrate Asterisk with analog, VoIP, and digital telephony systems</li>
<li>Build an interactive dialplan, using best practices for more advanced features</li>
<li>Delve into voicemail options, such as storing messages in a database</li>
<li>Connect to external services including Google Talk, XMPP, and calendars</li>
<li>Incorporate Asterisk features and functions into a relational database to facilitate information sharing</li>
<li>Learn how to use Asterisk’s security, call routing, and faxing features</li>
<li>Monitor and control your system with the Asterisk Manager Interface (AMI)</li>
<li>Plan for expansion by learning tools for building distributed systems</li>
</ul>

Asterisk: The Definitive Guide: The Future of Telephony Is Now

Design a complete Voice over IP (VoIP) or traditional PBX system with Asterisk, even if you have only basic telecommunications knowledge. This bestselling guide makes it easy with a detailed roadmap that shows you how to install and configure this open source software, whether you’re upgrading your existing phone system or starting from scratch.
Ideal for Linux administrators, developers, and power users, this updated fifth edition shows you how to set up VoIP-based private telephone switching systems within the enterprise. You’ll get up to speed on the features in Asterisk 16, the latest long-term support release from Digium. This book also includes new chapters on WebRTC and the Asterisk Real-time Interface (ARI).
<ul>
<li>Discover how WebRTC provides a new direction for Asterisk</li>
<li>Gain the knowledge to build a simple but complete phone system</li>
<li>Build an interactive dialplan, using best practices for Asterisk’s advanced features</li>
<li>Learn how ARI has emerged as the API of choice for interfacing web development languages with Asterisk</li>
</ul>

Asterisk: The Definitive Guide: Open Source Telephony for the Enterprise

See the best price to sell, buy, or rent books by Madsen, Leif. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Books by Madsen, Leif

See the best price to sell, buy, or rent books by Madsen, Leif. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Asterisk: The Future of Telephony

Asterisk: The Future of Telephony

Asterisk: The Definitive Guide (Definitive Guides)

Asterisk Cookbook: Solutions to Everyday Telephony Problems

Asterisk: The Definitive Guide: The Future of Telephony Is Now

Asterisk: The Definitive Guide: Open Source Telephony for the Enterprise