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VoIP Telephony with Asterisk BY Paul Mahle ISBN 09759992-0-6 Mahler, P.S. Asterisk and IP Telephony / Paul Mahle Copyright 2003, 2004 by Signate, LLC. All rights reserved. No part of this book may be reproduced in any form or by any means without permission in writing from the publisher Printed in the United States of America 20 19 18 17 16 15 14 13 12 11 Preface This book is a beginner's guide to Asterisk and VoIP. This book is a road map to your first successful installation of an Asterisk telephone system. The path you need to take is documented step-by-step The information you need is all here in a single place. This is not a beginner's guide to Linux in that assume you already are a skilled Linux and network administrator. However, you do not need grea expertise in telephony or IP telephony to benefit from this book Asterisk software turns an inexpensive PC architecture server running Linux or Unix into a reliable, sophisticated, full-featured enterprise telephone system. Because Asterisk is free and runs on an industry standard PC platform, an Asterisk system will cost you far less than any traditional, proprietar PBX. With Asterisk, you can quickly and easily build a sophisticated business telephone system for any enterprise, no matter how large or small. Because it is reliable, free and effective, and because it i based on modernInternet protocols, Asterisk will replace many legacy telephone systems in the marketplace. Asterisk is far less expensive and much more effective that any competing telephone system. Asterisk provides all the functionality of a traditionalPBX, but it also provides new features and capabilities a legacyPBX can't offer. Because Asterisk is open you can change it and tune it as needed, unlike legacy systems which only provide closed black boxes with closed interfaces. With Asterisk you will neve again get locked into proprietary obsolete eq