Copyright

Copyright

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 Addison-Wesley, Inc. was aware of a trademark claim, the designations have been printed with initial capital letters or in all capitals.

Lido Telecommunications Essentials is the registered trademark of The Lido Organization, Inc.

The author and publisher have taken care in the preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connection with or arising out of the use of the information or programs contained herein.

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Library of Congress Cataloging-in-Publication Data

Goleniewski, Lillian.

Telecommunications essentials : the complete global source for communications fundamentals, data networking and the Internet, and next-generation networks / Lillian Goleniewski.

p. cm.

Includes bibliographical references and index.

ISBN 0-201-76032-0

1. Telecommunication. I. Title.

TK5101 G598 2002

621.382 dc21 2001053752

Copyright 2002 by Pearson Education, Inc.

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior consent of the publisher. Printed in the United States of America. Published simultaneously in Canada.

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Pearson Education, Inc.

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Text printed on recycled paper

1 2 3 4 5 6 7 8 9 10 CRS 0504030201

First printing, December 2001

Dedication

To all students of telecom worldwide, who continue to inspire me with their desire to learn about the industry and reward me with their genuine enthusiasm about the subject when they understand it!