System information

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.
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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: First Edition.
August 2007: Second Edition.
April 2011: 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 con-
tained herein.
ISBN: 978-0-596-51734-2
[LSI]
1302181785