Library of Congress Cataloging-in-Publication Data

Ohrtman, Frank.  Voice over 802.11/Frank Ohrtman.  p. cm.  Includes bibliographical references and index.

TK5105.5668.O34 2004

641.382'12 dc22 2004041074

British Library Cataloguing in Publication Data

Ohrtman, Frank  Voice over 802.11. (Artech House telecommunications library)

621.3'845

ISBN 1-58053-677-8

Cover design by
Gary Ragaglia

685 Canton Street
Norwood, MA 02062

All rights reserved. Printed and bound in the United States of America. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without permission in writing from the publisher.

All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Artech House cannot attest to the accuracy of this information. Use of a term in this book should not be regarded as affecting the validity of any trademark or service mark.

International Standard Book Number: 1-58053-677-8

10 9 8 7 6 5 4 3 2 1

To Michelle Otte

About the Author

Frank Ohrtman has many years of experience in VoIP and wireless applications. Mr. Ohrtman learned to perform in-depth research and write succinct analyses during his years as a Navy Intelligence Officer (1981 1991)...