TAILIEUCHUNG - Asterisk: The Definitive Guide, 3rd Edition

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 | THIRD EDITION Asterisk The Definitive Guide Leif Madsen Jim Van Meggelen and Russell Bryant O REILLY Beijing Cambridge Farnham Koln Sebastopol Tokyo Asterisk The Definitive Guide Third Edition by Leif Madsen Jim Van Meggelen and Russell Bryant Copyright 2011 Leif Madsen Jim Van Meggelen and Russell Bryant. All rights reserved. Printed in the United States of America. Published by O Reilly Media Inc. 1005 Gravenstein Highway North Sebastopol CA 95472. O Reilly books may be purchased for educational business or sales promotional use. Online editions are also available for most titles http . For more information contact our corporate institutional sales department 800 998-9938 or corporate@. Editor Mike Loukides Production Editor Teresa Elsey Copyeditor Rachel Head Proofreader Andrea Fox Production Services Molly Sharp Indexer Fred Brown Cover Designer Karen Montgomery Interior Designer David Futato Illustrator Robert Romano Printing History June 2005 August 2007 April 2011 First Edition. Second Edition. Third Edition. Nutshell Handbook the Nutshell Handbook logo and the O Reilly logo are registered trademarks of O Reilly Media Inc. Asterisk The Definitive Guide the images of starfish and related trade dress are trademarks of O Reilly Media Inc. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book and O Reilly Media Inc. was aware of a trademark claim the designations have been printed in caps or initial caps. While every precaution has been taken in the preparation of this book the publisher and authors assume no responsibility for errors or omissions or for damages resulting from the use of the information contained herein. ISBN 978-0-596-51734-2 LSI 1302181785 Table of Contents Foreword. xix 1. A Telephony Asterisk and VoIP Bridging the Gap Between Traditional and Network Telephony 2 The Zapata .

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