`Exhibit 1019 Page 1
`
`
`
`Understanding Digital
`Subscriber Line Technology
`
`Thomas Starr
`
`Senior MTS
`
`Ameritech
`
`John M. Cioffi
`
`Professor ofElectrical Engineering
`Stanford University
`
`Peter Silverman
`
`Senior Architect — New Business Initiatives
`
`3COM Corporation
`_
`
`Prentice Hall PTR, Upper Saddle River, NJ 07458
`http://www.phptr.com
`
`DISH
`
`Exhibit 1019 Pae 2
`
`DISH
`Exhibit 1019 Page 2
`
`
`
`Library of Congress Catalog—in-Publication Data
`
`Starr, Thomas J. J.
`Understanding digital subscriber line technology/ Thomas J. J.
`Starr, John M. Cioffi, Peter Silverman.
`p.
`cm.
`Includes bibliographical references and index.
`ISBN 0-13-780545-4
`1. Digital telephone systems.
`Electronic.
`I. Ciofii, John M.
`TK642l.S85
`1999
`dc.387’8——dc21
`
`2. Telephone switching systems.
`II. Silverman, Peter.
`III. Title.
`
`98-47586
`CIP
`
`Editorial/production supervision: Vanessa Moore
`Interior Formatting: Aurelia Sharnhorst
`Cover design director: Jerry Votta
`Manufacturing manager: Alan Fischer
`Acquisitions editor: Bernard Goodwin
`Series editor: Theodore S. Rappaport
`Marketing manager: Kaylie Smith
`Front cover art is based upon a tapestry designed and woven by Gretchen Starr
`
`© 1999 Prentice Hall PTR
`Prentice-Hall, Inc.
`Upper Saddle River, NJ 07458
`
`Prentice Hall books are widely used by corporations and government agencies for training,
`marketing, and resale. The publisher offers discounts on this book when ordered in bulk
`quantities. For more information, contact Corporate Sales Department, Phone: 800-382-3419,
`Fax: 201-236-7141, Email: corpsales@prenhall.com
`or Write:Prentice Hall PTR
`Corporate Sales Department
`One Lake Street
`Upper Saddle River, NJ 07458
`
`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.
`
`All Trademarks are the property of their respective owners.
`All Figures used in Chapter 11 of this book are reproduced with permission of ATIS.
`Printed in the United States of America
`10
`9
`8
`7
`6
`5
`4
`3
`
`ISBN 0—13—780545—4
`
`Prentice-Hall International (UK) Lim.ited, London
`Prentice-Hall of Australia Pty. Limited, Sydney
`Prentice-Hall of Canada, Inc., Toronto
`Prentice-Hall Hispanoamericana S.A., Mexico
`Prentice-Hall of India Private Limited, New Delhi
`Prentice-Hall of Japan, Inc., Tokyo
`Prentice-Hall Asia Pte. Ltd., Singapore
`Editora Prentice-Hall do Brasil, Ltda., Rio de Janeiro
`
`DISH
`
`Exhibit 1019 Pae 3
`
`DISH
`Exhibit 1019 Page 3
`
`
`
`Reference
`
`determine the loop quality and SNR for each specific 4 kHz DMT tone. The following
`signal tone is used during the channel analysis phase of initialization: MEDLY.
`. Exchange: Having gathered the information about the quality of the connection and
`the requested configuration, the modems configure themselves and exchange informa-
`tion about their configuration. The specific bandwidth allocated to the requested bearer
`channels is assigned,
`the specific DMT tones and the amount of data encoded in each
`tone are determined and assigned. The connection is tested in both directions after
`which each modem notifies its peer that it is ready to enter normal communications,
`known in the standard as “showtime.” The following signal tones are used during the
`
`exchange phase of initialization: R/C-REVERB, and R/C—SEGUE.
`
`Reference
`
`American National Standards Institute. Standards Project Relating to Carrier to Cus-
`[1]
`tomer Connection 0fAsymmetric Digital Subscriber Line (ADSL) Equipment T1.413 Issue 2,
`1998.
`
`DISH
`
`Exhibit 1019 Pae 4
`
`DISH
`Exhibit 1019 Page 4
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