Zte ZXDSL 9210 (V3.1) User manual

ZXDSL 9210 (V3.1)
Broadband Universal Access
Equipment
Technical Manual
ZTE CORPORATION

ZXDSL 9210 (V3.1) Broadband Universal Access Equipment
Technical Manual
Document version 20040803-R1.2
Product version V3.1
Copyright © ZTE Corporation
All rights reserved.
No part of this documentation may be excerpted, reproduced, translated, annotated or
duplicated, in any form or by any means without the prior written permission of ZTE
Corporation.
ZTE CORPORATION ZTE DO BRASIL LTDA
ZTE Plaza, Keji Road South, Hi-Tech
Industrial Park, Nanshan District,
Shenzhen, P.R.China
ADD: Alameda Juari 522, Tamboré,
Barueri, São Paulo, Brasil - CEP
06460-090
Tel: [phone] 800-9830-
9830 Tel: + 0055-11-4208 3888
Fax: [phone] Fax: + 0055-11-42086888
Email: [email protected] Email: [email protected]
Technical Support Website: http://support.zte.com.cn

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Preface
About this Manual
ZXDSL 9210 (V3.1) Broadband Universal Access Equipment (called ZXDSL 9210 for
short) is a high-speed digital subscriber transmission line developed by ZTE based on
VDSL and ADSL. The system implements bi-directional transmission of high-speed
digital signals over a common pair of twisted telephone wires, which greatly improves
the line utilization of a PSTN.
In order for you to better understand the equipment and grasp the methods of
engineering installation, operations, and routine maintenance, we have compiled a
whole suite of user documents, including
Guide to Suite of Documents for ZXDSL 9210 (V3.1) Broadband Universal Access
Equipment
ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual
ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Hardware Manual
ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Installation Manual -
Hardware
ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Installation Manual -
Software
ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Command Manual
ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Interface Manual
ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Operation Manual
ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Maintenance Manual
How to use this Manual
This ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual
introduces the composition, performance, and technical indices of the ZXDSL 9210
system, the operating principles of the system and boards, together with its network
configuration, to help the user understand and grasp the ZXDSL 9210 system
comprehensively.

This manual includes:
Chapter 1 “Elementary Knowledge” introduces briefly the basic principles of the
ADSL and VDSL, and basic equipment-related concepts.
Chapter 2 “System Structure” introduces the overall structure, operating principles, and
features of the ZXDSL 9210 system.
Chapter 3 “Technical Indices” introduces the basic indices of the ZXDSL 9210 system
and various indices of the boards.
Chapter 4 “Hardware Structure” introduces the hardware structure of the ZXDSL 9210
system, and that of boards.
Chapter 5 “System Software” introduces the software structure of the ZXDSL 9210
system and that of an embedded BAS;
Chapter 6 “Interfaces & Communication” introduces the physical interfaces of the
ZXDSL 9210 system and the protocols applicable to this system.
Chapter 7 “Service Functions” describes the service functions of the ZXDSL 9210
system.
Chapter 8 “Networking Modes and System Configuration” introduces various
networking modes of the ZXDSL 9210 system and corresponding system
configurations.
Appendix A “Terms and Definitions” gives a brief interpretation of the key terms used
in this document.
Appendix B “Applicable Standards” introduces the standards govern the ZXDSL 9210
equipment comply with.
Appendix C “Abbreviations” makes a list of abbreviations used in this document.
Appendix D “Index” presents an index for this document.
Conventions
1. Notational convention
Angular brackets “<and>” identify names of keys and buttons, and the
information typed by an operator from a terminal

Square brackets “[and]” indicate a man-machine interface, menu item, data list
or field name. The symbol “Æ” separates a multi-level menu, e.g.,
[FileÆNewÆFolder] indicates the [Folder] menu item under the [New]
submenu of the menu [File].
2. Keyboard Operation Convention
Format Description
Characters within
angular brackets
Indicate a key or button name, e.g., <Enter>, <Tab>, <Backspace>,
and <a>
<Key 1+Key 2> Press Key 1 and Key 2 at the same time.
<Key 1, Key 2> Press Key1 first. Then release Key 1 and press Key 2
3. Mouse Operation Convention
Format Description
Click Refers to clicking the primary mouse button (usually the left mouse
button) once
Double-click Refers to quickly clicking the primary mouse button (usually the left
mouse button) twice
Right-click Refers to clicking the secondary mouse button (usually the right mouse
button) once.
Drag Refers to pressing and holding a mouse button and move the mouse
4. Danger, Warning, Caution and Note Statements
Danger, Warning, Caution and Note statements
are used throughout this manual to emphasize important and critical information.
You must read these statements to help ensure safety and to prevent product
damage. The statements are defined below.
Danger:
Indicates an imminently hazardous situation which, if not avoided, will result in death
or serious injury. This signal word is to be limited to the most extreme situations.

Warning:
Indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury.
Caution:
Indicates a potentially hazardous situation which, if not avoided, could result in minor
or moderate injury. It may also be used to alert against unsafe practices.
Note:
A Note statement is used to notify people of installation, operation, or maintenance
information that is important, but not hazard-related.
Tips:
Indicates a suggestion or hint to make things easier or more productive for the reader
Statement: The actual product may differ from what is described in this
manual due to frequent update of ZTE products and fast development of
technologies. Please contact the local ZTE office for the latest updating
information of the product.

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Contents
1 Elementary Knowledge........................................................................................................................... 1-1
1.1 Overview........................................................................................................................................1-1
1.2 Fundamental Principles of DSL .....................................................................................................1-4
1.2.1 Fundamental Principles of VDSL .......................................................................................1-4
1.2.2 Basic Principles of ADSL ...................................................................................................1-5
1.3 Related Basic Concepts..................................................................................................................1-7
1.3.1 ATM Technology.................................................................................................................1-7
1.3.2 ADSL Access Mode ............................................................................................................1-9
1.3.3 VDSL Access Mode ..........................................................................................................1-10
2 System Structure .....................................................................................................................................2-1
2.1 Brief Introduction to the System ....................................................................................................2-1
2.1.1 Background .........................................................................................................................2-1
2.1.2 Applicable Standards...........................................................................................................2-2
2.1.3 Functions.............................................................................................................................2-3
2.2 System Features .............................................................................................................................2-9
3 Technical Indices .....................................................................................................................................3-1
3.1 System Indices ...............................................................................................................................3-1
3.1.1 Physical Performance..........................................................................................................3-1
3.1.2 Power Supply of Equipment ...............................................................................................3-2
3.1.3 Environment Conditions .....................................................................................................3-3
3.1.4 Interface Indices..................................................................................................................3-4
3.1.5 Capacity Indices................................................................................................................3-16
3.2 Board Indices ...............................................................................................................................3-16

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3.2.1 SCBF ................................................................................................................................ 3-16
3.2.2 VTIEF............................................................................................................................... 3-17
3.2.3 ATIGN .............................................................................................................................. 3-17
3.2.4 Splitter Board.................................................................................................................... 3-18
3.2.5 EICM ................................................................................................................................ 3-18
3.2.6 FEC................................................................................................................................... 3-19
3.2.7 Enhanced Ethernet Subboard (FNC card)......................................................................... 3-20
3.2.8 EICG................................................................................................................................. 3-20
3.2.9 Line Protection & Control Board (LTC)........................................................................... 3-21
3.2.10 Embedded BAS (RPCK) ................................................................................................ 3-21
3.2.11 Backplane (MDSLA) ...................................................................................................... 3-21
4 Hardware Structure................................................................................................................................ 4-1
4.1 Overall Architecture of the System................................................................................................ 4-1
4.1.1 Cabinet................................................................................................................................ 4-3
4.1.2 Frame .................................................................................................................................. 4-5
4.1.3 Single-frame Configuration ................................................................................................4-5
4.1.4 Arrangement Diagram of Integrated Equipment................................................................. 4-6
4.2 Introduction to Boards ................................................................................................................... 4-8
4.2.1 SCBF .................................................................................................................................. 4-8
4.2.2 VTIEF............................................................................................................................... 4-10
4.2.3 ATIGN .............................................................................................................................. 4-12
4.2.4 VDSL Splitter Board (VSEN/VSET)................................................................................ 4-14
4.2.5 PSUN/PSUT ..................................................................................................................... 4-15
4.2.6 EICM ................................................................................................................................ 4-16
4.2.7 EICG................................................................................................................................. 4-18
4.2.8 LTC ................................................................................................................................... 4-20

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4.2.9 Embedded BAS (RPCK)...................................................................................................4-21
4.2.10 Backplane (MDSLA) ......................................................................................................4-22
5 System Software ......................................................................................................................................5-1
5.1 Overview........................................................................................................................................5-1
5.2 Software Environment Requirements ............................................................................................5-1
5.3 ZXDSL 9210 System Software......................................................................................................5-2
5.4 ZXDSL 9210 System Software Subsystem....................................................................................5-4
5.4.1 Network Management Subsystem.......................................................................................5-4
5.4.2 Subscriber Management Subsystem....................................................................................5-5
5.4.3 System Control Subsystem .................................................................................................5-6
5.4.4 Database Subsystem..........................................................................................................5-10
5.4.5 L3/4 Protocol Subsystem ..................................................................................................5-10
5.4.6 L2 Protocol Subsystem .....................................................................................................5-11
5.4.7 Service Control Subsystem ...............................................................................................5-13
5.4.8 Bearer Subsystem..............................................................................................................5-15
5.4.9 Operation Support Subsystem...........................................................................................5-15
5.4.10 BSP Subsystem ...............................................................................................................5-15
5.5 System Software of Embedded BAS ...........................................................................................5-16
5.6 System Software Subsystem of Embedded BAS .........................................................................5-17
5.6.1 Service Subsystem ............................................................................................................5-17
5.6.2 Bearer Subsystem..............................................................................................................5-20
5.6.3 Operation & Maintenance Subsystem...............................................................................5-21
5.6.4 System Control Subsystem ...............................................................................................5-23
5.6.5 Database Subsystem..........................................................................................................5-24
5.6.6 Service Control Subsystem ...............................................................................................5-25
5.6.7 Operation Support Platform ..............................................................................................5-26

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5.7 Introduction to Basic BAS Concepts ........................................................................................... 5-26
5.7.1 Multiple Contexts ............................................................................................................. 5-26
5.7.2 Interfaces........................................................................................................................... 5-28
5.7.3 Subscribers........................................................................................................................ 5-28
5.7.4 Ports and Circuits.............................................................................................................. 5-28
5.7.5 Bindings............................................................................................................................ 5-29
6 Interfaces and Communication ............................................................................................................. 6-1
6.1 Interfaces ....................................................................................................................................... 6-1
6.1.1 Ethernet Interface................................................................................................................ 6-1
6.1.2 User Interface...................................................................................................................... 6-4
6.2 Introduction to Protocols ............................................................................................................... 6-6
6.2.1 RFC1483 Protocol .............................................................................................................. 6-6
6.2.2 RFC1483 Bridging Protocol ............................................................................................... 6-7
6.2.3 PPP...................................................................................................................................... 6-7
6.2.4 PPPoE Protocol................................................................................................................. 6-11
6.2.5 VLAN Protocol................................................................................................................. 6-14
6.2.6 STP ................................................................................................................................... 6-17
6.2.7 RADIUS Protocol............................................................................................................. 6-17
6.2.8 802.1X Protocol................................................................................................................ 6-20
6.2.9 Multicast ........................................................................................................................... 6-25
6.2.10 VBAS Protocol ............................................................................................................... 6-29
7 Service Functions.................................................................................................................................... 7-1
7.1 Overview ....................................................................................................................................... 7-1
7.2 Introduction to Services Functions ................................................................................................ 7-1
7.2.1 Basic Service Functions...................................................................................................... 7-1
7.2.2 Broadband O&M Functions................................................................................................ 7-4

-v-
8 Networking Modes and System Configuration ....................................................................................8-1
8.1 Networking Mode ..........................................................................................................................8-1
8.1.1 Uplink Router......................................................................................................................8-1
8.1.2 Uplink BAS Equipment ......................................................................................................8-3
8.1.3 Convergence of Multiple 9210 Devices..............................................................................8-4
8.1.4 Chain Networking with Multiple 9210 Devices..................................................................8-5
8.1.5 Star Networking with Multiple 9210 Devices.....................................................................8-6
8.2 System Configuration.....................................................................................................................8-7
8.3 Examples........................................................................................................................................8-9
8.3.1 Networking Analysis...........................................................................................................8-9
8.3.2 Configuration Implementation ............................................................................................8-9
8.3.3 Application Features..........................................................................................................8-10
Appendix A Terms and Definitions.......................................................................................................... A-1
A.1 Asymmetric Digital Subscriber Line (ADSL).............................................................................. A-1
A.2 Access Network (AN) .................................................................................................................. A-1
A.3 Asynchronous Transfer Mode (ATM) .......................................................................................... A-1
A.4 ADSL Transceiver Unit (ATU)..................................................................................................... A-1
A.5 ADSL Transceiver Unit, Central Office End (ATUC).................................................................. A-2
A.6 ADSL Transceiver Unit, Remote End (ATUR) ............................................................................ A-2
A.7 Discrete Multi-Tone (DMT)......................................................................................................... A-2
A.8 Digital Subscriber Line Access Multiplexer (DSLAM)............................................................... A-2
A.9 Integrated Service Digital Network (ISDN)................................................................................. A-2
A.10 Media Access Control (MAC).................................................................................................... A-3
A.11 Management Information Base (MIB) ....................................................................................... A-3
A.12 Network-Network Interface (NNI)............................................................................................. A-3
A.13 Power Spectral Density (PSD) ................................................................................................... A-3

-vi-
A.14 Quadrature Amplitude Modulation (QAM) ............................................................................... A-3
A.15 Very high-speed Digital Subscriber Line (VDSL) .................................................................... A-4
A.16 Video on Demand (VOD) .......................................................................................................... A-4
Appendix B Applicable Standards ...........................................................................................................B-1
B.1 ADSL Standards............................................................................................................................B-1
B.2 ATM-Related Standards ................................................................................................................B-1
B.3 Ethernet/L2/L3 Related Standards ................................................................................................B-2
B.4 National Standards ........................................................................................................................B-4
Appendix C Abbreviations....................................................................................................................... C-1
Appendix D Index..................................................................................................................................... D-1

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List of Figures
Fig. 1.2-1 VDSL Communication Duct ............................................................................................1-4
Fig. 1.2-2 Allocation of VDSL Channel Frequency..........................................................................1-5
Fig. 1.2-3 ADSL Communication Duct ............................................................................................1-5
Fig. 1.2-4 Allocation of ADSL Channel Frequency..........................................................................1-6
Fig. 1.3-1 ATM Cell..........................................................................................................................1-7
Fig. 1.3-2 Relationship between VP and VC.....................................................................................1-8
Fig. 2.1-1 Networking Diagram of ZXDSL 9210 ............................................................................. 2-2
Fig. 3.1-1 PSD of ADSL over POTS Interface .................................................................................3-4
Fig. 3.1-2 RL Indices of Z Interface..................................................................................................3-6
Fig. 4.1-1 Overall Hardware Architecture of the System..................................................................4-1
Fig. 4.1-2 Size of the DSL Cabinet (Depth: 800)..............................................................................4-3
Fig. 4.1-3 Size of the DSL Cabinet (Depth: 600)..............................................................................4-4
Fig. 4.1-4 ZXDSL 9210 Frame .........................................................................................................4-5
Fig. 4.1-5 Board Configuration of Single Frame ..............................................................................4-6
Fig. 4.1-6 Configuration of the Integrated Equipment (DSL cabinet (Depth: 800)).........................4-7
Fig. 4.2-1 Operating Principles of SCBF ..........................................................................................4-9
Fig. 4.2-2 Operating Principles of VTIEF.......................................................................................4-11
Fig. 4.2-3 Operating Principles of ATIGN ......................................................................................4-13
Fig. 4.2-4 Operating Principles of VSEN........................................................................................4-14
Fig. 4.2-5 Operating Principles of VSET ........................................................................................4-15
Fig. 4.2-6 Operating Principles of PSUN........................................................................................4-16
Fig. 4.2-7 Operating Principles of PSUT ........................................................................................4-16
Fig. 4.2-8 Operating Principles of Ethernet Interface Subcards......................................................4-17

Fig. 4.2-9 Operating Principles of EICG ........................................................................................ 4-19
Fig. 4.2-10 Operating Principles of LTC ........................................................................................ 4-20
Fig. 4.2-11 Operating Principles of RPCK ..................................................................................... 4-21
Fig. 5.3-1 Overall Block Diagram of ZXDSL 9210 System Software ............................................. 5-2
Fig. 5.5-1 Overall Block Diagram of Embedded BAS System Software ....................................... 5-16
Fig. 5.6-1 Structure of Bearer Subsystem....................................................................................... 5-20
Fig. 5.6-2 Structure of Control Subsystem ..................................................................................... 5-23
Fig. 5.6-3 Relationship between Data Subsystems......................................................................... 5-24
Fig. 6.1-1 Schematic Diagram of Uplink Networking of Ethernet Interface (Adopting embedded
BAS) .................................................................................................................................................... 6-2
Fig. 6.1-2 Schematic Diagram of Uplink Networking of Ethernet Interface (Adopting distributed
BAS equipment) .................................................................................................................................. 6-2
Fig. 6.1-3 Relationship between Operation Modes of ZXDSL 9210................................................ 6-6
Fig. 6.2-1 Protocol Stack of RFC1483 Bridged................................................................................ 6-7
Fig. 6.2-2 Status Flow of PPP........................................................................................................... 6-8
Fig. 6.2-3 PPP Encapsulation Format ............................................................................................. 6-11
Fig. 6.2-4 PPPoE Protocol over Ethernet ....................................................................................... 6-12
Fig. 6.2-5 Communication Flow of PPPoE .................................................................................... 6-12
Fig. 6.2-6 Stages Involved in PPPoE Data Encapsulation.............................................................. 6-14
Fig. 6.2-7 Format of Tag Header .................................................................................................... 6-16
Fig. 6.2-8 Communication Flow of Access Authentication and Authorization with One or Multiple
RADIUS Servers ............................................................................................................................... 6-18
Fig. 6.2-9 Session Flow of Authentication Switching Among the Supplicant, Authenticator, and
Authentication Server ........................................................................................................................ 6-23
Fig. 6.2-10 EAPOL Frame Format of 802.1 Ethernet..................................................................... 6-24
Fig. 6.2-11 Format of EAP Packet.................................................................................................. 6-24
Fig. 6.2-12 PPP Authentication when VBAS Process is Added ..................................................... 6-31

iii
Fig. 7.2-1 High-speed Internet Access (Adopting distributed BAS equipment)...............................7-2
Fig. 7.2-2 High-speed Internet Access (Adopting embedded BAS) .................................................7-2
Fig. 7.2-3 VOD (Take for example the case when an embedded BAS is installed)..........................7-3
Fig. 7.2-4 Remote Enterprise LAN Access .......................................................................................7-4
Fig. 8.1-1 Schematic Diagram of Uplink Router Networking (ADSL and VDSL user access)........8-2
Fig. 8.1-2 Schematic Diagram of Uplink Router Networking ( Ethernet user access) .....................8-2
Fig. 8.1-3 Networking Diagram of Uplink BAS Equipment.............................................................8-3
Fig. 8.1-4 Networking Diagram of Uplink BAS Equipment ( Ethernet user access)........................8-3
Fig. 8.1-5 Networking Diagram when Multiple 9210s are Converged.............................................8-4
Fig. 8.1-6 Schematic Diagram of Chain Networking with Multiple ZXDSL 9210 Devices.............8-5
Fig. 8.1-7 Star Networking with Multiple ZXDSL 9210 Devices ....................................................8-6
Fig. 8.3-1 Actual Networking Diagram of ZXDSL 9210..................................................................8-9

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List of Tables
Table 1.2-1 Transmission Rates of High-Speed Uplink/Downlink Channels ...................................1-4
Table 1.2-2 Transmission Rates of High-Speed Channels and Medium-Speed Channels ................1-6
Table 3.1-1 Power Consumption Indices of Boards..........................................................................3-2
Table 3.1-2 PSD of ADSL over POTS ..............................................................................................3-5
Table 3.1-3 Parameters of 100M Ethernet Multimode Optical Interface (Transmitting)................3-10
Table 3.1-4 Parameters of the 100M Ethernet Multimode Optical Interface (Receiving) .............. 3-11
Table 3.1-5 Parameters of 100M Ethernet Single-Mode Optical Interface (Transmitting)............. 3-11
Table 3.1-6 Parameters of the 100M Ethernet Single-Mode Optical Interface (Receiving) ...........3-12
Table 3.1-7 Parameters of the 1000M Multimode Optical Transmitter ..........................................3-13
Table 3.1-8 Parameters of the 1000M Multimode Optical Receiver...............................................3-14
Table 3.1-9 Parameters of the 1000M Single-Mode Optical Transmitter .......................................3-15
Table 3.1-10 Parameters of 1000M Single-Mode Optical Receiver ...............................................3-15
Table 8.3-1 User’s Hardware Configuration of ZXDSL 9210 ..........................................................8-9
Table B.1-1 ADSL Standards........................................................................................................... B-1
Table B.2-1 ATM-Related Standards ............................................................................................... B-1
Table B.3-1 Ethernet/L2/L3 Related Standards................................................................................ B-2
Table B.4-1 National Standards ....................................................................................................... B-4