1、 TECHNICAL REQUIREMENT T1.TRQ.12-2004 Technical Requirement on Interface between Networks and Customer Installation Very-high-bit-rate Digital Subscriber Lines (VDSL) Metallic Interface (QAM-based) Prepared by T1E1.4 Working Group on Digital Subscriber Line Access Problem Solvers to the Telecommunic
2、ations Industry A Word from ATIS and Committee T1 Established in February 1984, Committee T1 develops technical standards, reports and requirements regarding interoperability of telecommunications networks at interfaces with end-user systems, carriers, information and enhanced-service providers, and
3、 customer premises equipment (CPE). Committee T1 is sponsored by ATIS and is accredited by ANSI. T1.TRQ.12-2004 Published by Alliance for Telecommunications Industry Solutions 1200 G Street, NW, Suite 500 Washington, DC 20005 Committee T1 is sponsored by the Alliance for Telecommunications Industry
4、Solutions (ATIS) and accredited by the American National Standards Institute (ANSI). Copyright 2003 by Alliance for Telecommunications Industry Solutions All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior
5、written permission of the publisher. For information contact ATIS at 202.628.6380. ATIS is online at . Printed in the United States of America. T1.TRQ.12-2004 Technical Requirements on Interface between Networks and Customer Installation Very-high-bit-rate Digital Subscriber Lines (VDSL) Metallic In
6、terface (QAM-based) Secretariat Alliance for Telecommunications Industry Solutions Approved May 2004 Abstract This document specifies Metallic Interface of the Very-high-speed Digital Subscriber Lines (VDSL). The document defines the VDSL functional requirements and the transceiver specification bas
7、ed on Quadrature Amplitude Modulation (QAM). These items include the duplexing method, spectral frequency plan, power spectral density (PSD) mask, operation and maintenance (OAM) and electrical characteristics of the service splitter. The transport medium for VDSL signals is a single twisted pair th
8、at may simultaneously support Plain Old Telephone Service (POTS), voice-band data service and Basic Rate Integrated Service Digital Network (BR ISDN) service. T1.TRQ.12-2004 ii FOREWORD The information contained in this Foreword is not part of this Technical Requirements document (TRQ). As such, For
9、eword may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the standard. This specification of the Very-high-bit-rate Digital Subscriber Line (VDSL) Metallic Interface based on QAM was dev
10、eloped by Committee T1 Telecommunications. The VDSL Metallic Interface specification defines the VDSL functional requirements and the transmitter specification based on Quadrature Amplitude Modulation (QAM). These items include the duplexing method, spectral frequency plan, power spectral density (P
11、SD) mask, operation and maintenance (OAM) and transceiver specification. Specification of these items for VDSL technique is considered vital to the spectral compatibility with other services - i.e., Asymmetric Digital Subscriber Line (ADSL), Symmetric Digital Subscriber Line (SDSL), etc. - that migh
12、t be sharing the distribution cable. The transport medium for VDSL signals is a single twisted pair that may simultaneously support Plain Old Telephone Service (POTS), voice-band data service and Basic Rate Integrated Service Digital Network (BR ISDN) service. The specification provides the minimal
13、requirements for satisfactory transmission between network and customer installation equipment when both utilize QAM technology. Equipment may be implemented with additional functions and procedures. VDSL Metallic Interface has 2 normative annexes, which are considered part of this document, and 7 i
14、nformative annexes, which are provided for information only. Footnotes are not officially part of this TRQ. Future control of this document will reside with the Network Interface, Power, and Protection Committee (NIPP), formerly Technical Subcommittee T1E1. This control of additions to the specifica
15、tion, such as protocol evolution, new applications, and operational requirements, will permit compatibility among U.S. networks. Such additions will be incorporated in an orderly manner with due consideration to the ITU-T layered model principles, conventions, and functional boundaries. Suggestions
16、for improvement of this TRQ are welcome. They should be sent to the Alliance for Telecommunications Industries Solutions (ATIS), 1200 G Street, NW, Suite 500, Washington, DC 20005. Working Group T1E1.4 on DSL Access, has the technical responsibility for this document. Over the course of its developm
17、ent, the following individuals participated in the Working Groups discussions and made significant contributions to the document: Rick Townsend, T1E1 Chair Ed Eckert, T1E1 Vice-Chair Nicole Butler, T1E1 Secretary Massimo Sorbara, T1E1.4 Chair Thomas Starr, T1E1.4 Vice-Chair Neal King, T1E1.4 Secreta
18、ry Vladimir Oksman, Ph.D., T1E1.4 Technical Editor Chad Underkoffler, ATIS Chief Editor Andrew Deczky Craig Valenti Dong Wei Syed A. Abbas Hamlet Abedmamoore Maamoun Abouseido Phil Allen Candare M. Anderson Flemming Andersen R. Barry Angell Hiromitsu Awai Glen Backes George Bailey Greg Bain Robert B
19、aldemair Brian Baldwin Eyal Barnea Michael Beck Bora Biray Trone Bishop Steve Blackwell John Boal R. T. Bobilin Holton Bond David Bono Mike Borsetti Richard Brandt Gerry Briggs David Brockman Dave Brooks Joy Brooks Les Brown Randy Brown Curtis Brownmiller William Buckley Bob Burke Peter Caldera Rob
20、Calderbank Peter Capani Art Carlson Paulus Carpelan Ross Cassan Guy Cerulli Charles Chasszing Ramon Chea Giovanni Cherubini Jacky Chow John Cioffi Terry Cole John W. Cook Mike Cook Todor Cooklev Graham Copley Glen Cotant Vijay Davar Gary Davis Michel Darveau Philip Des Jardins Ronnie Dhaliwal T1.TRQ
21、.12-2004 iii Philip Dillon Henry Do Paul Donaldson Vladimir Drofman Barry Dropping Chris Dunford Edward J. Eckert Alper Erdogen Dave Fenton Pierre Ferland Rocky Flaminio Klaus Fosmark Kevin Foster Howard Frazier Vladimir Friedman Hans-Joerg Frizlen Pierre Gagnon Frank Garcia Nabil Gebrael Mike Gerak
22、oulis Alon Gerza George Ginis Phil Golden Richard G. Gonzalez Richard Goodson Motti Goren Dael Gorreen-Segal Efrain Guevara Danny Gur Bijit Halder Steve Halme Rabah Hamdi Chris Hansen Philip Havens Sam Heidari Rich Hennum Mahbub Hoque Don R. House Les Humphrey Chansoo Hwang Sean Iwasaki Umashankar I
23、yer Stephen S. Jackson Krista S. Jacobsen John M. Jeffers Ralph Jensen Gary Jin Albin Johansson Kelly Johnson David C. Jones Chim Kamdar Amir Kantschuk Richard Kennedy Ken Kerpez Kamran Khadavi Mark Kilgore Marc Kimpe Neal J. King Ken Ko Tetsu Koyama Kanna Krishnan Fred E. Kujawski Dasari Jagadish K
24、umar Yatish Kumar Leonard Kuenstler Philip J. Kyees Amir Leshem George Landsburg Justine Lau Marc Lavoie Stefan Lehmann Steve Levy Jingdon Lin Stan Ling Gin Liu Wayne LLoyd Guozhu Long Michelle Lynch John Maas Henry Mar Marcus Maranhao Dan Marchok Alan Marion Joseph Markee Ron Marquardt Paul Marrang
25、oni Doug W. Marshall Al Martin Bill Mason Kazuya Matsumoto Bo Matthys Thomas Maudoux Kent McCammon Oz Micka Celite Milbrandt Steve Mlikan Robert Moore Lane Moss Donovan Nak Randy Nash Bill Nattrass Todd E. Nelson Gunter F. Neumeier Vladimir Oksman Barry OMahony Toshio Ooka Aidan ORourke Peter O. Bra
26、ckett Pacific Rutesh Parikh Michael Jong-Hyuck Park Greg Parma Mark Peden Shimon Peleg Raffaele Penazzi Mark Pennington Miguel Peeters Todd Pett Frank Ploumen Thierry Pollet Carl Posthuma Philip Potter Ling Qin Sigang Qiu Jim Quilici Shabaz Rahmanian Jeffrey M. Rakos Richard Rawson Farooq Raza Dave
27、Reilly John Reister Behrooz Rezvani Scott Robbins Rodrigo Rubiano Jimmy Salinas Guatam Sameer Wayne Sanderson Sabit Say Sigurd Schelstraete Kevin Schneider Martin Schwan Jay Shah Ahmed Shalash Tom Shen Greg Sherrill Mazen Shihabi Jun-ichi Shirasu Zion Shohet Kevin Sievert Mark Simkins Don Skipwith P
28、. Norman Smith Edwin J. Soltysiak Ranjan Sonalkar Massimo Sorbara Matt Squire Patrick Stanley Tom Starr Mark Steenstra Dick Stillwell James Stiscia Richard Stuart Kurt Sundstrom Henri Suyderhoud Steve Swam Hiroshi Takatori Daryl C. Tannis Franco A. Tavella Vivek Telang Gary Tennyson Cherry Tom Andre
29、w Tomilson J. Alberto Torres Richard L. Townsend Markos Troulis Michail Tsatsanis Marcos Tzannes Craig Valenti Danny Van Bruyssel Frank Van der Putten Dale Veeneman Rami Verbin Pieter Versavel Mark A. Visbal Jin-Der Wang Min Wang Qi Wang Xiaofeng Wang Dong Wei Andy Weirich Alan Weissberger Adam Wia
30、Josh Wilken Arlynn Wilson Ben Wiseman Maynard Wright Paul Wyar Clifford Yackle Jack Yang Tet Yeap Irvin Youngberg Nelson Zagalsky Xuming Zhang Brent Zitting T1.TRQ.12-2004 iv TABLE OF CONTENTS FOREWORD .II 1 SCOPE AND PURPOSE. 1 1.1 SCOPE 1 1.2 PURPOSE 1 2 NORMATIVE REFERENCES 1 3 DEFINITIONS. 2 4 A
31、CRONYMS AND ABBREVIATIONS 5 5 REFERENCE CONFIGURATIONS AND DESCRIPTION . 9 5.1 VDSL REFERENCE MODEL 9 5.1.1 VDSL transmission units 10 5.1.2 Network termination 10 5.1.3 Service splitter . 10 5.1.4 Network Interface Device (NID) 10 5.1.5 U reference points 10 5.2 INTERFACE PROTOCOL REFERENCE MODEL 1
32、0 5.3 VTU REFERENCE MODEL 11 5.4 COEXISTENCE WITH OTHER SERVICES ON THE SAME PAIR 13 5.5 REMOTE POWERING 13 5.6 REPEATERED OPERATION . 13 6 TRANSPORT CAPABILITY. 14 6.1 DATA RATE 14 6.2 PERFORMANCE REQUIREMENTS 14 6.2.1 Error performance requirements . 14 6.2.2 Fast channel latency requirements 14 6
33、.2.3 Impulse noise immunity requirements 14 7 TRANSMISSION MEDIUM INTERFACE CHARACTERISTICS. 15 7.1 TRANSMIT SIGNAL CHARACTERISTICS. 15 7.1.1 Wide-band power . 15 7.1.2 Power spectral density (PSD) 15 7.1.2.1 Central office deployment scenario (FTTEx) 16 7.1.2.1.1 Downstream PSD template 16 7.1.2.1.
34、2 Upstream PSD template. 16 7.1.2.2 Cabinet deployment scenario (FTTCab). 17 7.1.2.2.1 Downstream PSD template 17 7.1.2.2.2 Upstream PSD template. 18 7.1.3 Transmit PSD control 18 7.1.3.1 Upstream power back-off 18 7.1.3.1.1 UPBO PSD template 19 7.1.3.1.2 Upstream power back-off procedure 20 7.1.3.2
35、 Downstream power back-off . 20 7.1.3.3 Egress control . 20 7.1.3.4 PSD setup 20 7.2 TERMINATION IMPEDANCE . 21 7.3 RETURN LOSS. 21 7.4 OUTPUT SIGNAL BALANCE 21 7.5 DUPLEXING METHOD 22 8 PHYSICAL MEDIUM-DEPENDENT (PMD) SUBLAYER . 22 8.1 PMD FUNCTIONAL MODEL . 22 8.2 TRANSMITTER FUNCTIONALITY 24 8.2.
36、1 Splitting 24 T1.TRQ.12-2004 v 8.2.2 Timing 25 8.2.3 Coding and modulation 25 8.2.3.1 Constellation encoder . 25 8.2.3.2 Modulator . 30 8.2.3.2.1 Symbol rates and carrier frequencies 30 Spectral shaping filters . 31 8.3 RECEIVER FUNCTIONALITY. 32 8.4 TRANSMISSION PROFILE . 33 9 TRANSMISSION CONVERG
37、ENCE (TC) SUBLAYER. 33 9.1 TC SUBLAYER FUNCTIONALITY 33 9.1.1 Generic reference model 33 9.1.2 ATM transport 35 9.1.2.1 Functional model of ATM transport 35 9.1.2.2 Transport of ATM data 35 9.1.3 STM transport 36 9.1.3.1 Functional model of STM transport 36 9.1.3.2 Transport of STM data 37 9.1.4 Pac
38、ket Transport mode 37 9.1.4.1 Functional Model of PTM transport . 37 9.1.4.2 Transport of PTM data. 38 9.2 TC SUBLAYER INTERFACE SPECIFICATION. 38 9.2.1 I-interface. 38 9.2.1.1 Data flow. 38 9.2.1.2 Synchronization flow. 38 9.2.2 ()-interface. 39 9.2.2.1 Data flow. 39 9.2.2.2 Synchronization flow. 3
39、9 9.2.2.3 OAM flow 40 9.2.3 Application interface description (-interface) 40 9.2.3.1 Operation channel transport-specific TC (OC-TC) 41 9.2.3.1.1 Data flow 41 9.2.3.1.2 Synchronization flow 41 9.2.3.2 OC-TC functionality 42 9.2.3.2.1 Multiplexing of VOC and eoc. 42 9.2.3.2.2 De-multiplexing 42 9.2.
40、3.3 ATM transport protocol specific TC (ATM-TC) 42 9.2.3.3.1 Application interface description. 42 9.2.3.3.1.1 Data flow. 43 9.2.3.3.1.2 Synchronization flow. 43 9.2.3.3.1.3 Control flow 44 9.2.3.3.1.4 OAM flow 44 9.2.3.3.2 ATM-TC functionality 44 9.2.3.3.2.1 Cell rate de-coupling 45 9.2.3.3.2.2 HEC
41、 generation/verification. 45 9.2.3.3.2.3 Cell payload randomization and de-randomization 45 9.2.3.3.2.4 Cell delineation. 45 9.2.3.4 STM transport protocol specific TC (STM-TC). 46 9.2.3.4.1 Application interface description. 46 9.2.3.4.1.1 Data flow. 46 9.2.3.4.1.2 Synchronization flow. 46 9.2.3.4.
42、1.3 OAM flow 46 9.2.3.4.1.4 STM TPS-TC functionality 47 9.2.3.5 Packet transport protocol specific TC (PTM-TC). 47 9.2.3.5.1 Application interface description. 47 Data flow 47 9.2.3.5.1.2 Synchronization flow. 48 9.2.3.5.1.3 Control flow 48 9.2.3.5.1.4 OAM flow 49 9.2.3.5.2 PTM-TC functionality 49 9
43、.3 PHYSICAL MEDIA SPECIFIC TC (PMS-TC) SUBLAYER 49 9.3.1 Functional model . 49 9.3.2 Transmission frame 50 9.3.2.1 Frame format 50 T1.TRQ.12-2004 vi 9.3.2.1.1 Fast codeword 51 9.3.2.1.2 Slow codeword . 51 9.3.2.2 Frame header 52 9.3.2.2.1 Syncword octets . 53 9.3.2.2.2 Control 1 octet . 53 9.3.2.2.3
44、 Control 2 octet . 53 9.3.2.2.4 Control 3 octet . 54 9.3.2.2.5 CRC-bits. 54 9.3.2.3 Frame transport classes 55 9.2.3.4 NTR transport and NTR marker generation 55 9.3.2.5 Frame delineation algorithm 55 9.3.2.6 Randomization and de-randomization 56 9.3.2.7 Forward error correction . 56 9.3.2.8 Interle
45、aving. 57 10 OPERATION AND MAINTENANCE (OAM). 58 10.1 OAM FUNCTION MODEL. 58 10.2 OAM COMMUNICATION CHANNELS 59 10.2.1 Indicator Bits (IB) 60 10.2.2 VDSL embedded operations channel (eoc) 60 10.2.3 VDSL overhead control (VOC) channel. 60 10.2.4 Partitioning of OAM data 60 10.3 OAM PRIMITIVES. 61 10.
46、3.1 Line-related primitives. 61 10.3.1.1 Near-end anomalies 62 10.3.1.2 Far-end anomalies 62 10.3.1.3 Near-end defects . 62 10.3.1.4 Far-end defects . 63 10.3.1.5 Near-end failures 63 10.3.1.6 Far-end failures 63 10.3.2 Path-related primitives 63 10.3.2.1 Anomalies, defects, and failures for ATM tra
47、nsport . 64 10.3.2.1.1 Near-end anomalies . 64 10.3.2.1.2 Far-end anomalies . 64 10.3.2.1.3 Near-end defects 64 10.3.2.1.4 Far-end defects 64 10.3.2.1.5 Near-end failures . 65 10.3.2.1.6 Far-end failures . 65 10.3.2.2 Anomalies, defects, and failures of STM transport . 65 10.3.2.3 Anomalies, defects
48、, and failures for PTM transport . 65 10.3.2.3.1 Near-end anomalies . 65 10.3.2.3.2 Far-end anomalies . 65 10.3.2.3.3 Near-end defects 65 10.3.2.3.4 Far-end defects 66 10.3.2.3.5 Near-end failures . 66 10.3.2.3.6 Far-end failures . 66 10.3.3 Power-related primitives 66 10.3.3.1 Near-end primitives.
49、66 10.3.3.2 Far-end primitives. 66 10.3.4 A minimum set of far-end indicators 67 10.4 OAM PARAMETERS 68 10.4.1 Performance parameters 68 10.4.1.1 Line-related performance parameters. 68 10.4.1.2 Path-related performance parameters 68 10.4.1.2.1 ATM data path-related performance parameters. 68 10.4.1.2.2 STM data path-related performance parame
