Thomas Starr I John M. Cioffi I Peter J. Silverman
`
`U n d e rsta n d i ng __ -------a
`Digital Subscriber
`line Technology
`
`• DSL technologies explained
`by the experts who created
`the standards
`
`• The most complete coverage
`anywhere: ISDN, HDSL,
`ADSL, and VDSL
`
`CD-ROM Included
`
`

`
`Communication Engineering
`
`CD-ROM Included
`
`Understanding Digital Subscriber Line Technology
`Thomas Starr I John M. Cioffi I Peter J. Silverman
`
`The basic infrastructure for the global broadband network of the future is already
`in place in most homes and offices. Ordinary telephone lines can provide low-cost,
`high-volume access to the exploding world of telecommunications services that
`users increasingly rely on.
`
`Now, leading experts in the field have come together to share their insights in a
`single volume, explaining the past, present, and future of all the DSL technologies.
`Understanding Digital Subscriber Line Technology:
`• Covers the entire DSL family, from ISDN at 144 kb/s to VDSL at 52 Mb/s
`• Details DSL at all layers of protocol, with special emphasis on the physical layer
`• Discusses applications from both provider and end-user points of view
`• Gives an insider's view of the telecommunications standards process
`
`Key standards are explained, including transmission line characteristics, data rates,
`modulation and coding methods, operations procedures, transconvergence layers,
`protocols, and network architectures.
`
`With its inside track and extensive level of detail, Understanding Digital Subscriber
`Line Technology will be indispensable to telecom and datacom engineers at every
`level. It also offers a comprehensible explanation of issues in this growing field to
`managers, marketing experts, and consumers of DSL technology.
`
`About the CD-ROM
`The enclosed CD-ROM includes drafts of the XDSL standards, as well as the top papers
`presented at the T1E1.4 Standards Committee meetings between 1990 and 1998.
`
`About the Authors
`THOMAS STARR develops and manages new local access technologies for Ameritech.
`He also chairs ANSI's TIE1.4 working group, which develops XDSL standards
`for the United States. Mr. Starr also serves as a member of the Board of Directors
`of the ADSL Forum.
`
`JOHN M. CIOFFI is the founder of Amati Inc., the company that wrote most of the ADSL
`standard. He is an associate professor of electrical engineering at Stanford University.
`He has been the editor for VDSL requirements development in the ANSI T1E1.4 group
`and holds the original patent on VDSL and many other patents in ADSL and VDSL.
`
`PETER J. SILVERMAN is a Senior Architect at 3COM, responsible for planning the
`implementation, provisioning, and management of DSL services in a multi-vendor,
`multi-provider environment and a member of the T1E1.4 working group. Mr.
`Silverman is a contriblltor to the International
`Telecommunications Union development of XDSL
`Recommendations.
`
`ISBN 0-13-780545-4
`
`90000
`
`Prentice Hall
`Upper Saddle River, NJ 07458
`http://www.phptr.com
`
`9 780137 805457
`
`

`
`

`
`Understanding Digital
`Subscriber Line Technology
`
`ISBN 0-13-780545- 4
`
`

`
`Prentice Hall Communications Engineering
`and Emerging Technologies Series
`Theodore S. Rappaport, Series Editor
`
`RAPPAPORT, Wireless Communication: Principles & Practice
`RAzAVI, RF Microelectronics
`GARG & WILKES, Principles and Applications ofGSM
`STARR, CIOPFI, & SILVERMAN, Understanding Digital Subscriber Line Technology
`
`FORTHCOMING
`
`LIBERTI & RAPPAPORT, Smart Antennas {or Wireless CDMA: 18-95 and Wideband
`CDMA Applications
`TRANTER, KOSBAR, RAPPAPORT, & SHANlI1UGAN, Simulation of Modern Communications
`Systems with Wirele ss Applications
`
`

`
`Understanding Digital
`Subscriber Line Technology
`
`Thomas Starr
`SeniorMTS
`Ameritech
`
`John M. Cioffi
`Professor of Electrical Engineering
`Stanford University
`
`Peter Silverman
`Senior Architect - New Business Initiatives
`3COM Corporation
`
`Prentice Hall PTR, Upper Saddle River, NJ 07458
`http://www.phptr.com
`
`

`
`Library of Congress Catalog-in-Publication Data
`
`Starr, Thomas J. J.
`Understanding digital subscriber line technology I Thomas J. J.
`Starr, John M. Cioffi, Peter Silverman.
`cm.
`p.
`Includes bibliographical references and index.
`ISBN 0-13-780545-4
`1. Digital telephone systems.
`I. Cioffi, John M.
`Electronic.
`TK6421.S85 1999
`dc.387'8--dc21
`
`2. Telephone switching systems.
`II. Silverman, Peter.
`Ill. Title.
`
`98-47586
`CIP
`
`EditoriaVproduction 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
`
`@ 1999 Prentice Hall PTR
`Prentice-Hall, Inc.
`Upper Saddle River, NJ 07458
`
`Prentice Hall books are widely used by corporations and govemment 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
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`ISBN 0-13-780545-4
`
`Prentice-Hall International (UK) Limited, London
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`
`

`
`Dedicated to our dear wives,
`
`&itarilynn 0!5tarr
`0!5haron '(Jioffi
`
`GDatricia .;Pane 0!5ilverman
`
`

`
`Generic DSL Reference Model
`
`co
`'" LTI "-
`
`Switch
`
`Multi-
`plexer
`
`~
`M
`0
`F
`
`I-
`
`L...,
`
`Customer Premises
`
`I repeater I
`
`Local lOOp
`
`r;<
`
`I
`~
`-I
`
`NT
`
`-
`
`TE
`
`co: Central Office-
`A building where local
`loops connect to
`transmission and switching
`equipment.
`
`LT: Line Termination(cid:173)
`DSL modem at the network
`end of the local loop.
`
`MDF: Main Distributing
`Frame - A wire cross(cid:173)
`connecting field used to any
`loop to any CO equipment.
`
`Repeater - A signal
`regeneration device
`located near the
`midpoint of a cable.
`Used to enable
`transmission on long
`loops. Repeaters are
`not needed for the
`majority of loops.
`
`Local loop - The
`telephone wire
`connecting the CO
`to the customer
`premises.
`
`NID: Network Interface
`Device - The point of
`demarcation between the
`customer installation and the
`telephone company outside
`wire.
`
`NT: Network Termination(cid:173)
`DSL modem at the customer
`end of the local loop.
`
`TE: Terminal Equipment(cid:173)
`End-user equipment such as a
`personal computer or a
`telephone.
`
`

`
`Contents
`
`Preface
`
`xv
`
`Acknowledgments
`
`xvi
`
`About the Authors
`
`xvii
`
`2
`
`3
`
`1
`Chapter 1 DSL Fundamentals
`1.1 Alternatives to DSLs: Fiber, Wireless , a nd Coax
`1.2 Worldwide Extent
`2
`1.3 Voice-Band Modems and DSLs
`1.4 Transmission Modes
`8
`1.4.1 Direction
`8
`1.4.2 Timing
`9
`1.4.3 Channels 10
`1.4.4 Single and Multipoint Topologies
`1.5 DSL Terminology
`12
`1.6 Rate Versus Reach
`12
`1.7 Crosstalk
`13
`1.8 Enabling and Disabling Forces
`1.9 Applications
`17
`1.10 Evolution of Digital Tra nsmission
`
`11
`
`16
`
`21
`
`Chapter 2 Types of DSLs
`2.1 DSL Design Margin
`2.2 DSL Precursors
`
`24
`
`23
`
`23
`
`vii
`
`

`
`viii
`
`Contents
`
`26
`
`53
`
`2.3 Basic Rate ISDN
`25
`25
`2.3.1
`ISDN Basic Rate Origins
`2.3.2 Basic Rate ISDN Capabilities and Applications
`2.3.3 Basic Rate ISDN Rate Transmission
`26
`2.3.4 Extended·Range Basic Rate ISDN
`27
`2.3.5 DigitaL Added Main Line
`29
`2.3.6
`lDSL
`30
`2.4 HDSL
`30
`30
`2.4.1 HDSL Origins
`2.4.2 HDSL CapabiLities and Application
`2.4.3 HDSL Transmission
`32
`2.4.4 Second·Generation HDSL
`2.5 ADSL
`41
`2.5.1 ADSL Definition and Reference Model
`2.5.2 ADSL Origins
`42
`2.5.3 ADSL Capabilities and Application
`2.5.4 ADSL Transmission
`43
`2.5.5 ADSL's Future
`46
`2.6 VDSL
`49
`2.6.1 VDSL Definition and Reference Model
`2.6.2 VDSL Origins
`51
`2.6.3 VDSL Capabilities and Applications
`
`31
`
`41
`
`43
`
`49
`
`5 1
`
`35
`
`53
`
`54
`56
`
`Chapter 3 Twisted -Pair Transmission
`3.1
`'I'wisted~Wire· Pair Origins
`53
`3.2 Telephone Network and Loop Plant Characteristics
`3.2.1 Feeder PLant
`54
`3.2.2 Digital Loop Carrier
`3.2.3 Distribution Plant
`3.2.4 Wire Gauge
`56
`3.2.5 Bridged Tap
`57
`58
`3.2.6 Loaded Loop
`59
`3.2.7 Loop Length Distribution
`3.2.8 Customer Premises Configuration
`3.3 Line Powering
`63
`3.3.1 Actiuationl Deactiuation
`3.4 Sealing Current
`63
`
`60
`
`63
`
`

`
`•
`
`Contents
`
`86
`
`119
`
`3.5 Transmission Line Characterization
`64
`"ABeD" Modeling
`3.5.1
`3.5.2 Transmission Line RLCG Characterization
`3.5.3 Characterization of a Bridged-Tap Section
`3.5.4 Loaded Coils - Series Inductance
`75
`3.5.5 Computation of Transfer Function
`75
`3.5.6 Measurements for Computation of RLCC Parameters
`3.5.7 Balance - Metallic and Longitudinal
`84
`3.6 Noises
`85
`3.6.1 Crosstalk Noise
`92
`3.6.2 Radio Noise
`94
`3.6.3
`Impulse Noise
`97
`3.7 Spectral Compatibility
`3.7.1
`Interference Between DSLs and Multiplexing
`3.7.2 Self-Interference
`99
`3.7.3 Crosstalk FEXT and NEXT Power Spectral Density Models
`3.7.4 Emissions from DSLs
`104
`3.8 More Two-Port Networks
`105
`3.8.1 Reciprocal and Lossless Two-Port Circuits
`3.8.2 Analog Filter Design and T(s)
`107
`3.8.3 Lossless Realization of H(s)
`113
`3.8.4 Frequency! Magnitude Scaling and Frequency Transformations
`3.8.5 Active Filters
`116
`3.9 Three-Port Networks for DSLs
`3.9.1 POTS Splitters
`120
`3.9.2 Hybrid Circuits
`128
`References
`129
`
`64
`
`67
`74
`
`78
`
`98
`
`106
`
`100
`
`114
`
`C h a pter 4 Compa r ison with O ther M e dia
`4.1 Fiber-to-the-Home
`133
`4.2 Coax and Hybrid Fiber Coax
`4.3 Wireless Alternatives
`136
`4.4 Satellite Services
`References
`137
`
`134
`
`137
`
`133
`
`C h a pter 5 Tra n smission Duple xing M e thods
`5.1 Four-Wire Duplexing
`139
`
`139
`
`

`
`x
`
`Contents
`
`140
`5.2 Echo Cancellation
`5.2.1 Adaptive Echo Cancellation
`5.3 Time-Division Duplexing
`142
`5.4 Frequency-Division Multiplexing
`References
`144
`
`142
`
`143
`
`147
`
`150
`
`155
`
`161
`
`Chapter 6 Basic Digita l Transmission Methods
`6.1 Basic Modulation and Demodulation
`147
`6.1.1 The Additive White Gaussian Noise Channel
`6.1.2 Margin, Gap, and Capacity
`154
`6.2 Baseband Codes
`155
`6.2.1 The 2BIQ Line Code (ISDN and HDSL)
`6.2.2 Pulse Amplitude Modulation
`159
`6.2.3 Binary Transmission with DC Notches
`6.2.4 4B3T Line Code
`166
`6.2.5 485B Modulation
`168
`6.2.6 Successive Transmission
`6.3 Passband Codes
`172
`6.3.1 Quadrature Amplitude Modulation
`6.3.2 Carrierless AMPM
`174
`175
`6.3.3 Other Quadrature Modulation Schemes
`6.3.4 Constellations for QAM ICAP and Relation to VSB
`6.3.5 Complex Baseband Equivalents
`178
`References
`180
`
`169
`
`173
`
`183
`
`Chapter 7 Loop Impairments, Solutions, and DMT
`7.1
`Intersymbol Interference
`183
`7.1.1 Quantifying IS]
`184
`7.1.2 Equalization
`186
`7.1.3 Transmit Equalization
`196
`200
`7.1.4 Partial·Response Detection
`7.1.5 Maximum·Likelihood Detection (Viterbi Algorithm)
`7.2 Multichannel Line Codes
`205
`7.2.1 Capacity of the AWGN Channel
`7.2.2 Basic Multichannel Transmission
`7.2.3 Loading Algorithms
`208
`7.2.4 Channel Partitioning
`217
`7.2.5 Equalization for Multichannel Partitioning
`
`205
`206
`
`228
`
`176
`
`202
`
`

`
`contents
`
`236
`
`247
`
`256
`
`7.2.6 ADSL Tl.413 DMT
`235
`7.2.7 Clipping and Scaling (Peak-to-Auerage Issues)
`7.2.8 Fast Fourier Transforms for DMT
`242
`7.2.9 Multiplexing Methods for Multicarrier Transmission
`7.2.10 Narrowband Noise Rejection
`251
`7.3 Trellis Coding
`256
`7.3.1 Constellation Partitioning and Expansion
`7.3.2 Enumeration of Popular Codes
`262
`262
`7.3.3 Shaping Effects
`7.3.4 Turbo Codes
`263
`7.4 Error Control
`264
`265
`7.4.1 Basic Error Control
`7.4.2 Reed-Solomon Codes
`270
`274
`Interleauing Methods
`7.4.3
`Concatenated Coding and Multilayer Coding
`7.4.4
`ADSL Special Case
`277
`7.4.5
`CRC Checks
`281
`7.4.6
`Scramblers
`285
`7.4.7
`References
`288
`
`277
`
`297
`
`314
`
`302
`303
`
`Initialization, Timing and Performance
`Chapter 8
`8.1
`Initi alization Methods
`297
`8.1.1 Actiuation
`297
`299
`8.1.2 Gain Estimation
`8.1.3 Synchronization (Clock, Frame)
`8.1.4 First Channel Identification
`8.1.5 Channel Equalization
`311
`8.1 .6 Secondary Channel Identification and Exchange
`8.2 Adaptation of Receiver and Transmitter
`314
`8.2.1 Receiuer Equalization Updating
`315
`318
`8.2.2 Transmitter Adjustment
`8.3 Measurement of Performance
`324
`8.3.1 Test Loops and Noise Generation
`8.3.2 Measure of Performance
`333
`8.4 Timing Recovery Methods
`337
`8.4.1 Basic PLL Operation
`337
`8.4.2 Open-Loop Timing Recouery
`341
`8.4.3 Decision-Directed Timing Recouery
`
`325
`
`344
`
`

`
`xii
`
`Contents
`
`8.4.4 Pointers and Add I Delete Mechanisms
`8.4.5 Frame Synchronization
`348
`8.4.6 Discrete-Time VCO Implementation
`References
`352
`
`346
`
`349
`
`Chapter 9 Operations, Administration Maintenance,
`and Provisioning
`355
`9.1 OAM&P Features
`358
`9.2 Loop Qualification
`360
`
`Chapter 10 DSL in the Context of the ISO Reference Model
`10.1 The ISO Model
`363
`10.2 Theory and Reality
`365
`365
`The Internet Protocol Suite
`10.3
`ATM in the Seven-Layer Model
`366
`10.4
`367
`10.4.1 Physical Layer Functions
`10.4.2 Link and Higher-Layer Functions
`
`367
`
`363
`
`369
`369
`
`Chapter 11 ADSL: The Bit Pump
`11.1 ADSL System Reference Model
`11.2 ATU-C Reference Model
`370
`11.3 ATU-R Reference Model
`372
`Specific Configurations to Support ATM
`11.4
`Framing
`373
`11.5
`375
`11.5.1 Superframe Structure
`11.5.2 Fast Data Buffer Frame Structure
`375
`11.5.3
`Interleaved Data Buffer Frame Structure
`11.6 Operations and Maintenance
`377
`11. 7
`Initialization
`378
`Reference
`379
`
`373
`
`376
`
`Chapter 12 ATM Transmission Convergence on ADSL
`12.1 Functions of ATM Transmission Convergence
`381
`12.2 Transmission Convergence in an ADSL Environment
`Reference
`384
`
`381
`
`382
`
`Chapter 13 Frame-Based Protocols over ADSL
`13.1 PPP over a Frame-Based ADSL
`385
`13.1.1 RFC 1662~PPPinHDLC-LikeFramine
`
`385
`
`386
`
`

`
`Contents
`
`xiii
`
`13.1.2 RFC 1661 - The Point-To-Point Protocol
`13.2 FUNI over ADSL
`388
`13.2.1 FUNI Frame Structure
`13.2.2 Encapsulation
`389
`Reference
`389
`
`388
`
`387
`
`391
`
`398
`398
`
`402
`
`Chapter 14 ADSL in the Context of End·to-End Systems
`14.1 An Overview of a Generic DSL Architecture
`394
`14.1.1 The Customer's Premises
`394
`The DSL Loop
`395
`14.1.2
`Termination of DSL in the Carrier's Central Office
`14.1.3
`or Remote Site
`395
`396
`14.1.4 The Carrier's Back-End Data Network
`14.1.5 The Interface to the Service Provider's Network
`14.2 Potential ADSL Services and the Service Requirements
`14.3 Specific Architectures for Deploying ADSL in Different
`Business Models
`399
`14.4 Several ADSL Architectures
`402
`14.4.1 A Packet-Based Architecture for Small Deployments
`403
`14.4.2 ATM Access Networks
`405
`14.4.3 RFC 1483
`407
`14.4.4 PPP over ATM
`14.4.5 Tunneled Gateway Architecture
`14.4.6 PPP Terminated Aggregation
`References
`410
`
`408
`409
`
`411
`
`Chapter 15 Network Architecture and Regulation
`15.1 Private Line
`411
`15.2 Circuit Switched
`15.3 Packet Switched
`15.4 ATM
`413
`15.5 Remote Terminal
`414
`15.6 Competitive Data Access Alternatives
`15.7 Regulation
`416
`
`411
`412
`
`414
`
`Chapter 16 Standards
`16.1
`lTV
`420
`16.2 Committee Tl
`16.3 ETSl
`423
`
`421
`
`419
`
`

`
`xiv
`
`Contents
`
`424
`424
`
`16.4 ADSL Forum
`16.5 ATM Forum
`16.6 DA VIC
`425
`IETF
`16.7
`425
`EIAlTlA
`16.8
`426
`IEEE
`16.9
`426
`16.10 The Value of Standards and Participation in Their Development
`16.11 Sta ndards Process
`428
`16.11.1 When to Develop a Standard
`Is a Standard Needed?
`430
`16.11.2
`16.11.3 Standard or Standards?
`431
`
`429
`
`427
`
`Appendix A Glossary
`
`433
`
`Appendix B Selected Standards and Specifications
`
`443
`
`Appendix C Selected TIEl.4 Contributions and ADSL Forum
`Technical Reports (found on CD.ROM)
`447
`
`Index
`
`465
`
`

`
`Preface
`
`V isionaries have spoken of a future where
`the common person has instantaneous access to data spread around the globe .
`Engaging in a live videoconference, or perhaps watching a personalized newscast are
`just two of examples of many. For this vision to become reality, a global broadband
`information infrastructure must be built that provid es low-cost access to the con(cid:173)
`sumers and sources of information. What connects to virtually every home and busi(cid:173)
`ness in the industrialized world? Phone lines connect to 700 million sites today.
`Data rates of several kilobits per second are possible over phone lines using dial-up
`modems. This is enough to spark the appetite of the Internet surfer hut is not nearly
`enough to satisfy the desire for immediate information on demand. Similarly, video
`and audio a pplications at dial-up modem data rates leave users demanding more.
`Digital subscriber line (DSL) technology enables high-speed digital transmis(cid:173)
`sion on conventional telephone lines. A global broadband information in frastructure
`based on telephone lines is emerging, and it relies on DSL technology. The transfor(cid:173)
`mation of the telephone line access has begun ; it is progressing with the addition of
`over one billion U.s. dollars worth of DSL equipment each year.
`Accomplishing the impossible is an engineer's greatest reward. Digital sub(cid:173)
`scriber line development has been most rewarding. In 1975, it was believed that 20
`kb/s was the highest data rate that could be transmitted via telephone Jines. Then,
`breakthrough concepts in digital transmission were enabled by enormous advances
`in very-large-scale integrated (VLSI) circuits and digital signal processing (DSP).
`Transceiver designs of breathtaking complexity (at that t ime) provided 144 kh/s
`basic rate ISDN (BRI) transport via most telephone lines. Experts then said that this
`was very near the capacity limit of telephone lines. This barrier was demolished by
`the 1.5 Mhls high bit rate DSL (HDSL). The breakthrough cycle was repeated by 6
`Mb/s asymmetric DSL (ADSL), and then 52 Mbls very-high bit rate DSL (VDSL).
`This book explains and details the key concepts for DSL technology and its
`applications. The reader will attain a strong familiarity with the crucial aspects and
`technical jargon of the DSL field. The scope encompasses app lications, network
`xv
`
`

`
`xvi
`
`Prefa ce
`
`architecture, network management, network operations, communications protocols,
`standards, regulatory issues, and the underlying technologies. This book was written
`to assist engineers and marketing managers - whether new to DSLs or experts in
`need of a convenient reference.
`Background regarding voice· band transmission via telephone lines may be
`found in the excellent books by Witham Reeves on subscriber loops.
`
`Acknowledgments
`The authors thank Jim Loehndorf for assistance with the sections on data communi(cid:173)
`cations protocols, and Kim Maxwell for providing his input regarding voice-band
`modems and other sections.
`The authors would also like to sincerely thank Dr. Kiho Kim, Richard Goodson,
`and Dr. Martin Pollakowski for their review of this material and their helpful com(cid:173)
`ments and suggestions.
`The second author, John Cioffi, especially would like to thank the following peo(cid:173)
`ple (in alphabetical order) for their significant discussions and direct assistance on
`specific topics of this book: Mike Agah, John Bingham, Jacky Chow, Peter Chow,
`John Cook, Joice DeBolt, Kevin Foster, Mathias Friese, Richard Goodson, Werner
`Henkel, Atul Salvekar, Jose Tellado, Po Tong, Craig Valenti, Jean-Jacques Werner,
`and George Zimmerman. He further wishes to thank Dr. Joe Lechleider for enticing
`him into DSL in 1987, and thanks beyond measure the outstanding technical staff of
`Amati (1989-1997, now Texas Instr uments), and the first to believe: his past and
`present students at Stanford.
`Thanks also go out to Steve Blackwell and Kevin Schneider of Adtran, who
`kindly offered the use of their good summary of HDSL2 work in the T1E1.4 Working
`Group.
`The first author, Tom Starr, has had the pleasure of chairing the T I E1.4
`Working Group for over ten years. Thanks to the professionalism, dedication, and
`expertise of its members, TIE1.4 has done more than merely write the industry's
`DSL standards. Multidisciplinary collaboration has allowed TIE1.4 to set the indus(cid:173)
`try's objectives and chart the course to meeting these objectives. There have been
`moments of agony and disappointment but, on the whole, serving as TIE1.4 chair
`has been rewarding. Thank you, members ofTlE1.4, for being the world's foremost
`creators of DSL technology.
`The views expressed in this book are those of the authors and do not necessarily
`reflect the views of their employers or the organizations in which the authors hold
`office.
`
`Thomas Starr
`John M. Cioffi
`Peter Silverman
`
`

`
`About the Authors
`
`THOMAS STARR
`Tom Starr is a Senior Member of Technical Staff in Ameritech's Network
`Architecture Planing Department. He is responsible for the development and man·
`agement of new local access technologies for Ameritec.h's network. These technolo(cid:173)
`gies include ADSL, HDSL, VOSL, and ISDN.
`Starr serves at Chairperson of ANSI accredited standards working group
`TIE1.4, which develops XDSL standards for the United States. He also serves on the
`board of directors for the ADSL Forum, which addresses end-to-end systems aspects
`related to ADSL-based services, and participates in the lTV SG15 Q4 group on
`XDSL international standards.
`He previously worked 12 years at AT&T Bell Laboratories on ISDN and local
`telephone switching systems. Seven U.S. patents in the field of telecommunications
`have been issued to Starr. He holds a MS degree in computer science and a BS
`degree in computer engineering from the University of Illinois, Champaign-Urbana.
`
`JOHN M. CIOFFI
`John M. Cioffi received the BSEE in 1978 from Illinois (Champaign-Urbana) and the
`PhDEE degree in 1984 from Stanford. He worked as a modem designer at Bell
`Laboratories from 1978-1986. He has been on the faculty of Stanford since 1986,
`where he is now a tenured associate professor. He also founded Amati
`Communications Corp. in 1991. has served as an officer and director since 1991, and
`is presently Chief Technical Officer of Amati in addition to continuing his Stanford
`position.
`Cioffi's specific interests are in the area of high-performance digital transmis(cid:173)
`sion and storage systems, where he has over 100 publications and 20 patents, all of
`which are licensed. He is a Fellow of the Institute of Electrical and Electronic
`
`xvii
`
`

`
`xviii
`
`About the Authors
`
`Engineers (IEEE), and received the 1991 IEEE Communications Magazine Best
`Paper Award as well as the 1995 T1 Outstanding Achievement Award of the
`American National Standards Institute. Cioffi was an NSF Presidential Investigator
`from 1987-1992 and has served in a number of editorial positions for IEEE maga(cid:173)
`zines and conferences.
`
`PETER SILVERMAN
`Peter Silverman is a Senior Architect in the ADSL Development Group of the New
`Business Initiatives Division at 3COM. Hi s responsibilities include formulating the
`architectural plans for 3COM's DSL product line to allow implementation, provision(cid:173)
`ing, and management of DSL services in a mulitvendor and mulitprovider environ(cid:173)
`ment. He has been active in the ADSL Forum, the TIE1.4, and ITU SG 15 Q4 DSL
`standards efforts.
`Prior to joining 3COM in 1997, Silverma n worked eight years as Senior
`Member of Technical Staff at Ameritech -
`including ADSL and Interactive Digital
`Cable Television. He began his career with eight years as a consu ltant for CAP
`Gemini America, developing digital telephone switching software for their clients.
`His education includes a BS in biology from the University of Chicago and graduate
`work in computer science at the University of Illinois, Chicago.
`
`

`
`ApPEND I X
`
`C
`
`XDSL CD-ROM Contents
`
`Notice: The contents of this CD-ROM arc Copyrighted by Prentice Hall, 1999.
`
`T1 E1.4 Meeting Reports
`
`89-018 July 88
`89-019 Oct 88
`89- 114 March 89
`89-161 June 89
`89-186R I August 89
`89-241 Sept 89
`89-285 Dec 89
`90-077 March 90
`90-135 June 90
`90-203 Sept 90
`90-240 Dec 90
`91-051 Feb91
`91-097 May 9 1
`91-156 August 91
`91- 183 Nov9 1
`92-056 Feb 92
`92-128A May 92
`92-195 AuguSt 92
`92-253 Dec 92
`93- 103A March 93
`
`'"
`
`

`
`.48
`
`Appendix C • XDSL CD·ROM Contents
`
`93-1038 April 93
`93- 147 May 93
`93-244 August 93
`93-277 Oct 93
`93-330 Nov 93
`94-040 Jan 94
`94-077 Feb 94
`94- 109 Apri l 94
`94- 147 June 94
`94-172 Sept 94
`94- 193 Dec 94
`95 -040 Feb 95
`95-083 June 95
`95-120 AugusI95
`95-\68 Nov 95
`96-056 Jan 96
`96-149 April 96
`96-280 July 96
`96-370 Nov 96
`97-134 Feb 97
`97-216 May 97
`97-261 Junc97
`97-362 Sept 97
`97-463 Dec 97
`98-068 Jan 98
`98- \35 March 98
`98-136 Apri l 98
`98-226 May 98
`98-230 June 98
`
`Annual Log of T1 E1 .4 documents
`
`89-000R5
`90-000R4
`91-000R3
`92-000R2 (fi rst half of 1992)
`92-000R3 (iasl half of 1992)
`93-000RS
`94 -000R6final
`95-000R4final
`96-000R2
`
`

`
`Appendix C
`
`• XDSL CD-ROM Con tents
`
`97-000R4
`98-000Q3
`
`.. ,
`
`Draft of XDSL Standards and Technical Reports
`
`9 1-oo6R3 - T I.410 DDS interface
`91-005 - TI.605 Basic Rate ISDN srr interface
`92-004 - TI.601 Basic Rate ISDN U interface
`92-oo2R2 - TR28 HOSL
`96-006 - Draft Version 2 TR28 HOSL
`94-oo7R7 - Final draft version of Issue I AOSL Standard Tl.413
`97-oo7R6 - Issue 2 ADSL Standard TI.413 as provided for default ballot July 1998
`98-002Rl - Early Draft of Spectral Compatibility Standard
`TlEI/97- I04R2a - Draft Proposed RADSL CAP/QAM Standard as provided for ballot
`October 1997
`TlEl.J/98-003R 1 - T 1.40 1.03 Analog Phone interface
`TIEI.2I94-003Rl - TI.403 DSI UTI Carrier" interface
`T IEl.2I98-006R2 - TIA03 Robbed Bit Signaling
`TIEl.l/98-028 - TR-005 T IE l Connector Catalog
`
`Selected T1 E1.4 Documents
`
`1992
`
`92-026 - Bellcore, ADSL DMT and QAM Performance
`92-027 - Cambridge Univ. , AOSL, HDSL, ISDN Spectral Compatibility
`92-037 - UCLA, QAM ADSL Performance
`92-143 - BelJcore, Impulse Noise
`92-144 - Bellcore, ADSL CAP and QAM Complexity
`92-147 - Bellcore, ADSL Testing and Selection
`92-148 - Bellcore, ADSL Crosstalk Testing
`92-149 - Bellcore, CAP ADSL Design
`92-152 - Bellcore, QAM ADSL Performance
`92-153 - Bellcore, ADSL Coding
`92-154 - BeHcore, ADSL Impulse Noise Cancellation
`92-155 - Bellcore, ADSL Echo Canceller
`92-161 - Bellcore, HDSL Sealing Current
`92-164 - Sellcore, ADSL Maintenance
`92-165 - SSC, ADS L Deployment
`92~ 166 - SBC, ADSL Overhead
`
`

`
`'"
`
`Appendix C
`
`• XDSL CD·ROM Contents
`
`92-167 _ Adtran, HDSL Transmit Power and Pulse Shape
`92-\69 _ Norte! , ADSL. HDSL, ISDN Spectral Compatibility
`92-197 - Arnall, ADSL Market Requirements
`92-\98 - Amali, ADSL DMT Design
`92-200 _ Amali , ADSL Programmable Trellis Coder
`92-204 - Arnall, ADSL Migration
`92-205 - Amali, ADSL Performance
`92-2 10 - Amali, ADS L Impulses from POTS
`92-212 - GTE, ADS L Standards Process
`92·214 - BT, AD5L Impulse Noise
`92-2 19 - Bel1core, ADSL Test Plan
`92-221 - Bel!core, Insertion Loss of HDSL Test Loops
`92-227 - Bel1core, Loop and Inside Wire Background Noise
`92-233 - AT&T, HDSL Spectral Compatibility
`
`1993
`
`93-007 - November 1993Drafl of TI.413 ADSL Standard
`93-014 - Bell Atlantic, Focus for ADSL Work
`93-0[5 - Amcritcch, ADSL Requirements
`93-018 - Amati , Why DMT for ADSL
`93-020 - Amati, Echo Cancelled ADSL
`93-026 - Amati. DMT ADSL Spectral Compatibility
`93-029 - Bellcore, ADSL Test Method
`93-030 - Bellcorc, QAM ADSL Measured Performance
`93-031 - Bellcore, DMT ADSL Measured Performance
`93-032 - Bellcore, CA P ADSL Measured Performance
`93-033 - Bellcore, Impact of ADSL o n Tl
`93-034 - Bellcore, Impulse noise testing fo r ADSL
`93-035 - Bellcore, RS code for ADSL
`93-037 - Bellcore, DMT, CAP, QAM ADSL Performance
`93-038 - Bell Atl:lntic, VDSL
`93- 040 - Bell Atlantic, ADSL Capabilities
`93-047 - Bellcore, Sealing Current
`93-048 - GTE, DMT ADS L Measured Performance
`93-054 - AT&T, CAP ADS L Un its Tested
`93-059 - AT&T, CAP vs. DMT ADSL
`93-067 - Aware, DWMT ADSL
`93-077R I - Chair, ADSL Working Agreement
`93-079 - Chair, ADSL Consensus
`93-083R3 - Amati, DMT Specification Overview
`
`

`
`Appendix C
`
`• XOSL CD-ROM Contents
`
`'"
`
`93-084 - Amali, DMT Transmitter
`93-086R I - Amali , TEQ for ADSL
`93-087 - Amali, ADSL Training
`93-088 - Amati , ADSL DMT Loading Algorilhm
`93-090 - Amali, ADSL PSD
`93-091 - Amati , ADSL FEC
`93-095 - Nynex, ADSL Impu lse Noise Performance: DMT, CAP, QAM
`93-109 - AT&T, ISDN Sealing Current
`93-113R I - Amali , ADSL Activation
`93-114 - Amati, ADSL Reveille Sequence
`93-116 - Amali. ADSL Echo Cancelled Mode
`93- 117 - Amali , ADSL Revised FEC and Inlerleaving
`93-118 - Amali , ADSL Trellis Coding & Tone Ordering
`93-119R2 - Amali. ADSL Framing and Synchronization
`93-122 - Amati , ADSL Channel Analysis
`93- 123 - Amali, ADSL Coding and Echo Cancellalion
`93- I 36 - Ameritech, ADSL System Reference Model
`93-127 - Amcrilech, ADSL in the Customer Premises
`93-128 - Amati, ADSL Scrambler
`93- 129 - Alealel , ADSL - Impact of l itter
`93-1 30 - AlcatcJ, ATM for ADS L
`93-131 - Alcalci , ADSL FDM vs. Echo Cancelled
`93-132 - Conslironics, Tesl Loops
`93-149 - Amali. ADSL FDMIEC and Coding
`93-150 - Bell Allan tic, ADS L Loop Reach , Rates, PSD
`93-151 - GTE, ADSL Testing
`93-160 - Aleatel, ADSL FDM vs. EC
`93-177 - Amali, ADSL Coding
`93-178 - Amali, ADSL & TI Crosstalk
`93-179 - Amali, ADSL Trellis Coding
`93-180 - Amali , ADSL Trellis Coding
`93-182 - Amali, ADSL Scrambler
`93- 184 - Amali, ADSL Bit Swap
`93- 185 - Amati, ADSL Echo Canceler Performance
`93- [97 - Ameritech, ADSL POTS Splitter Location
`93-199 - Ameritech. TI Carrier Loops
`93-206 - Bell Atlantic, ADSL Loop Reach. Rates, PSD
`93-220 - Bellcore, ADSL Nexi & Fext
`93-225 - BT, ADSL Operations and Maintenance
`93-229 - NTI, ADSL Premises Wiring
`
`

`
`452
`
`Appendill C
`
`• XDSL CD· ROM Contents
`
`93-237 - Amati, ADSL Coding and Echo Cancellation
`93-238 - Bellcore, ADSL Operations
`93-239 _ Bell Atlantic, ADSL Loop Reach , Rates, P$D
`93-240 - GTE ADS L Impairments, Noise, Testing
`93-246 - Amali, Multidrop ADSL
`93-247 - Amati, ADSL Coding
`93-248 _ Amati, ADSL & Tl Crosstalk
`93-25 8 - Bc1lcore, ADSL Premises Wiring
`93-262 - Bellcorc, ADSL Transmit Power
`93-263 - Bellocore, ADSL RFI
`93-264 - Orckit, ADSL Trellis Code
`93-268 - NT!, ADSL & TI Crosstalk
`93-272 - Aware, ADSL Trellis Codes
`93-274 _ Aware, ADSL Trellis Code Recommendation
`93-276 - Aware , Amati , ADSL Activation & Training
`
`1994
`
`94-019 _ Bel1core, ADSL performance in the presence ofTl carrier
`94-021 _ Bellcore, HDSL performance in the presence of ADSL
`94-026 - NTI , Distribution with the customer premises
`94-032 _ Amali , Collocation of POTS splitter for ADSL
`94-033 - Amati , Customer premises configurations
`94-040 - Minutes of January 1994 meeting
`94-041 _ Minutes of ad-hoc conference call on testing
`94-042 _ Minutes 0 ad-hoc conference call on POTS splitter location
`94-043 - BT, POTS Splitters
`94-068 - Telecom Australia, Impulse noise from ring trip
`94-077 - Minutes of February meeting
`94-087 _ Arnall, Improved performance from doubling the number of ADSL carrier tones
`94-088 _ Amati, 15 Mb/s ADSL via doubling the number of ADSL carrier tones
`94-109 - Minutes of interim meeting
`94-117 - Intellectual ProperlY Rights Notice
`94-126 - Amali, Multidrop ADSL
`94-129 - Aware, I-bit DMT constellation
`94- 131 - Bel1corc, POTS splitter filter characteristics
`94-132 _ Bel1core, Downstream ADSL power spectral density
`94-133 - ADI, Specification of analog components
`94-134 - ADI, D/A converter aspects
`94-135 - Bellsouth, POTS splitter characteristics
`94-147 - Minutes o f June meeting
`
`

`
`Appendix C
`
`• XOSL CO-ROM Conten ts
`
`'"
`
`94-153 - Results of TI EI LB 94-05 (ADSL)
`94-155 - ADC, Overhead bits for HDSL repeaters to report eRC errors
`94-156 - Telecom Australia, Extended impulse noise test
`94-161 R I - ECI, Method for ADSL bit swap
`94- [65 - Motoro[a, Announcement of ADS L Forum meeting
`94-166 - Westcll , Return loss simulalion results
`94-172 - Minutes of September meeting
`94-176 - Results of ADSL default letter ballot
`94- 182 - Ameritech,