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truyền đi dưới bất kỳ hình thức nào hoặc bất kỳ phương tiện điện tử hoặc cơ khí, bao gồm cả photocopy, ghi âm, hoặc bằng bất kỳ thông tin lưu trữ và hệ thống thu hồi, mà không có sự cho phép bằng văn bản của nhà xuất bản, ngoại trừ sự bao gồm các trích đoạn ngắn gọn xem xét lại. | 1111.1111 CISCO Authorized Self-Study Guide Cisco Voice over IP CVOICE Third Edition Foundation learning for CVOICE exam 642-436 ciscopress com Kevin Wallace. CCIE No. 7945 ii Authorized Self-Study Guide Cisco Voice over IP CVOICE Authorized Self-Study Guide Cisco Voice over IP CVOICE Third Edition Kevin Wallace Copyright 2009 Cisco Systems Inc. Published by Cisco Press 800 East 96th Street Indianapolis IN 46240 USA All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying recording or by any information storage and retrieval system without written permission from the publisher except for the inclusion of brief quotations in a review. Printed in the United States of America First Printing July 2008 Library of Congress Cataloging-in-Publication Data Wallace Kevin CCNP. Authorized self-study guide Cisco Voice over IP CVoice Kevin Wallace. 3rd ed. p. cm. ISBN 978-1-58705-554-6 hbk. CD-ROM 1. Internet telephony Examinations Study guides. 2. Electronic data processing personnel Certification Study guides. I. Title. II. Title Cisco Voice over IP CVoice . TK5105.8865.W3345 2008 004.69 5 dc22 2008022672 ISBN-13 978-1-58705-554-6 ISBN-10 1-58705-554-6 Warning and Disclaimer This book is designed to provide information about the Cisco Voice over IP CVOICE certification topics. Every effort has been made to make this book as complete and as accurate as possible but no warranty or fitness is implied. The information is provided on an as is basis. The authors Cisco Press and Cisco Systems Inc. shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information contained in this book or from the use of the discs or programs that may accompany it. The opinions expressed in this book belong to the author and are not necessarily those of Cisco Systems Inc. The Cisco Press self-study book series is as described intended for