Zte ZXDSL 9210 (V3.1) Technical Manual
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Zte ZXDSL 9210 (V3.1) Technical Manual

Zte ZXDSL 9210 (V3.1) Technical Manual

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

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  • Page 1 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual ZTE CORPORATION...
  • Page 2 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 ADD: Alameda Juari 522, Tamboré,...
  • Page 3 FAX: +86-755-26770160 Suggestions and Feedback To improve the quality of ZTE product documentation and offer better services to our customers, we hope you can give us your suggestions and comments on our documentation and fax this form to +86-755-26770160; or mail to “Marketing center 3...
  • Page 5 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.
  • Page 6 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.
  • Page 7 Square brackets “[and]” indicate a man-machine interface, menu item, data list or field name. The symbol “ ” separates a multi-level menu, e.g., [File New Folder] indicates the [Folder] menu item under the [New] submenu of the menu [File]. Keyboard Operation Convention Format Description Characters...
  • Page 8 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...

  • Page 9: Table Of Contents

    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...
  • Page 10 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) ....................
  • Page 11 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 .....................
  • Page 12 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........................
  • Page 13 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...
  • Page 14 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........................
  • Page 15 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.
  • Page 16 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.
  • Page 17 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.
  • Page 19 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) ....

  • Page 21: Elementary Knowledge

    1 Elementary Knowledge As the basis for subsequent chapters, this chapter introduces the elementary knowledge of VDSL and ADSL, including the basic principles of VDSL and ADSL, ATM technology and ADSL, together with common access modes of VDSL. 1.1 Overview With rapid development of Internet and gradual finalization of backbone access layer networks, the so-called user-oriented “last mile”...
  • Page 22 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual High-speed Digital Subscriber Line (HDSL) technology HDSL adopts the coding type 2B1Q code or CAP code. Two pairs of subscriber lines among existing telephone lines can be used to provide full-duplex T1/E1 signal transmission.
  • Page 23 Chapter Erro! Estilo não definido. Erro! Estilo não definido. the bi-directional transmission rate of the VDSL can reach 10 Mbps. There may be greater coverage when the line width becomes larger. Just like ADSL, VDSL may share the same subscriber line with ordinary telephone services. Because of small distance, the VDSL technology overcomes some ADSL problems such as low line selection ratio and unstable rate.

  • Page 24: Fundamental Principles Of Dsl

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual technologies solves the problem of accessed subscribers’ data security and quality of service. Besides, this solution provides operators with convenient methods of accounting, which solve the complicated problem existing in previous Ethernet management and accounting. 1.2 Fundamental Principles of DSL 1.2.1 Fundamental Principles of VDSL Generally, QAM is adopted by the IP-based VDSL, and connects both ends of the...

  • Page 25: Basic Principles Of Adsl

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. distance, that is, the longer a line is, the lower rate it has. The lowest uplink rate is 1.5 Mbps while the lowest downlink rate is 4 Mbps. Fig. 1.2-2 is the allocation of the VDSL channel frequency.

  • Page 26: Fig. 1.2-4 Allocation Of Adsl Channel Frequency

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Table 1.2-2 Transmission Rates of High-Speed Channels and Medium-Speed Channels Channel Average Rate Lowest Rate Highest Rate High-speed downlink channel 6 Mbit/s 1.5 Mbit/s 8 Mbit/s Medium-speed duplex channel 512 kbit/s 64 kbit/s 1 Mbit/s Note: This table is for reference only.

  • Page 27: Related Basic Concepts

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. ZXDSL 9210 employs two kinds of channels with different delay and reliability: Fast channels (Fastonly) and interleaved channels (Interleave). The function of the “Fastonly” channel is to make bit stream sent at the transmitting end reach the receiving end within the shortest period of time via this path.

  • Page 28: Fig. 1.3-2 Relationship Between Vp And Vc

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual waiting time is far shorter than that of IP packets since an ATM cell is only 53 bytes long. These advantages of ATM make it an extremely popular technology in the whole ADSL-based service network.

  • Page 29: Adsl Access Mode

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 1.3.2 ADSL Access Mode Depending on the way it is accessed to Internet, ADSL employs slightly different protocols. No matter what protocol is used by ADSL, ADSL is based on the most fundamental protocol - TCP/IP, and supports all TCP/IP program applications.

  • Page 30: Vdsl Access Mode

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 1.3.2.3 Commonly Used PPPoE Software PPPoE software is used to connect the PPP of the operating system with the Ethernet protocol, and connect to the ISP via the PPPoE. EnterNet EnterNet is developed by NTS.COM (which has been merged into Efficient Networks, one equipment development &...

  • Page 31: System Structure

    2.1 Brief Introduction to the System 2.1.1 Background ZTE has developed ZXDSL 9210 (V3.1) Broadband Universal Access Equipment (called ZXDSL 9210 or 9210 for short) to meet users’ requirements. This product employs the VDSL and ADSL technologies. In the VDSL technology, the FDM and Quadrature Amplitude Modulation (QAM) technologies are combined to transmit voice and high-speed digital signals over an ordinary copper twisted pair.

  • Page 32: Applicable Standards

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual VDSL access, and Ethernet access). The convergence layer functions are implemented by an IP network and a Broadband Access Server (BAS). The IP network converges data and transmits them fast while the BAS provides the accounting and background management of DSL subscribers (the BAS is connected to a Radius server and a subscriber database server).

  • Page 33: Functions

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 2.1.2.2 Related ATM Standards The ATM standards ZXDSL 9210 complies with are shown in Table B.2-1 in Appendix 2.1.2.3 Related Ethernet/L2 STANDARDS The Ethernet/L2 standards ZXDSL 9210 complies with are shown in Table B.3-1 in Appendix B.
  • Page 34 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual electrical/optical interfaces and 1000M Ethernet optical interfaces to enable users over IP network to achieve dial-up access via LAN or leased line Internet access. 2.1.3.3 VLAN Services Virtual Local Area Network (VLAN) is a new technology for fulfilling virtual workgroups by dividing LAN devices logically, not physically, into different network segments.
  • Page 35 Chapter Erro! Estilo não definido. Erro! Estilo não definido. different VLANs are identified, and the whole-network VLAN interconnection is possible. Supports the PVLAN mode Private VLAN (PVLAN) consists of two kinds of ports: Normal VLAN ports and PVLAN ports. Normal ports may interwork with all same VLAN ports while a PVLAN port can only interwork with normal ports instead of any other PVLAN port.
  • Page 36 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The xDSL line test system is designed to test high-/low-frequency characteristics of lines (including the test and analysis of 12 narrowband parameters). This system employs the advanced TDR technology to test the characteristics of the xDSL line so as to determine whether lines is suitable for carrying xDSL service, whether there exists any broken/short circuit, whether there exists any bridge tap, whether there is any noise interference, and whether...
  • Page 37 Chapter Erro! Estilo não definido. Erro! Estilo não definido. line. This enables the user to restore service within the shortest possible period of time, thus reducing operation loss and winning more time to eliminate these faults. Attention: Current versions only support M+1 protection for ADSL subscriber interface boards instead of for VDSL subscriber interface boards.
  • Page 38 (128K × N). Provides flow prepaid service and duration prepaid service (ZTE provides a whole set of solutions in combination with the RADIUS Server).

  • Page 39: System Features

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Performs power-on self-test, and sends status signals to the background. Controls the ON/OFF status of a buzzer via software. 2.2 System Features ZXDSL 9210 features the following: High transmission rate The downlink rate of ADSL generally ranges from 1.5 Mbits/s to 8 Mbit/s while its uplink rate ranges from 64 kbit/s to 1 Mbit/s.
  • Page 40 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Implements embedded BAS functions Capable of access, protocol conversion, management & access AAA, and statistics. Supports SNMP NM Supports CLI, Telnet, and SNMP NM; supports inband and outband NM modes. Implements broadband O & M functions Implements line test system functions, Modem remote management functions, and M+1 protections.

  • Page 41: Technical Indices

    3 Technical Indices This chapter introduces such indices as the dimensions, weight, power supply, power consumption, grounding, environmental parameters and capacity, indices and specifications of equipment interfaces, power consumption of boards, interface parameters, and input/output indices of interfaces of ZXDSL 9210. 3.1 System Indices 3.1.1 Physical Performance 3.1.1.1 Dimensions, Color and Structure...

  • Page 42: Power Supply Of Equipment

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Simple, neat and hidden cabling. There are lots of installation holes inside the cabinet, with sufficient binding holes in the height, depth and width directions for easy wiring. There are cabling holes at the top and bottom of a cabinet. Subscriber cables, trunk cables, and optical cables can be laid upward or downward according to actual conditions of the equipment room.

  • Page 43: Environment Conditions

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Board Name Power Consumption (W) Function 32 channels/board ADSL over POTS user circuit ATIGN interface board VSEN Voice splitter board for VTIEF VSET Test splitter board for VTIEF PSUN Voice splitter board for ATIGN PSUT Test splitter board for ATIGN Ethernet uplink interface board (without Layer 2...

  • Page 44: Interface Indices

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 3.1.3.4 Lighting The equipment room must not be exposed to direct sunshine to prevent circuit boards and other components from aging and deforming due to long-time exposure to sunshine. The average illumination is 150 to 200lx without any flare. The equipment room is lighted by fluorescent lamps embedded in the ceiling.

  • Page 45: Table 3.1-2 Psd Of Adsl Over Pots

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Table 3.1-2 shows the transmitting PSD at downlink ATU. Table 3.1-2 PSD of ADSL over POTS Frequency Band f (kHz) PSD (dBm/Hz) Maximum: -97.5. The maximum power on this frequency band is 0<f<4 +15dBrn.

  • Page 46: Fig. 3.1-2 Rl Indices Of Z Interface

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The line interface of the ADSL device must be able to be free from any fire risk within 15 minutes when it contacts directly one or two 220 V (50 Hz) conductors.
  • Page 47 Chapter Erro! Estilo não definido. Erro! Estilo não definido. Loss/frequency distortion The loss/frequency distortion at any frequency band within 300 to 3,400 Hz relative to loss of 1 kHz should not be greater than ± 1.0 dB. Delay distortion The additional value of signal group delay distortion at 0.6 to 3.2 kHz caused by two POTS splitters must not be greater than 200 ms.
  • Page 48 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 100M Ethernet interface parameters Transmitter interface parameters Differential mode output voltage of transmitter Differential mode output voltage is the difference between the voltages at both ends of a balanced circuit. The differential mode output voltage of a transmitter is the voltage difference between TD+ and TD- of a differential line pair.
  • Page 49 Chapter Erro! Estilo não definido. Erro! Estilo não definido. voltage. It is usually calculated as 10% to 90% of Vout. The rise and fall edges meet the following requirements: 3.0 ns ≤ trise/tfall ≤ 5.0 ns, and maximum value of difference between trise and tfall <...

  • Page 50: Table 3.1-3 Parameters Of 100M Ethernet Multimode Optical Interface (Transmitting)

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 60 to 80MHz: > 10dB Common mode rejection capability The input end must be able to resist sinusoidal common mode interference with the frequency of 0 to 125MHz and amplitude of 1.0Vpp. 3.1.4.4 100BASE-FX Interface Indices General characteristics of the 100M optical interface Rate: 100 Mbit/s...

  • Page 51: Table 3.1-4 Parameters Of The 100M Ethernet Multimode Optical Interface (Receiving)

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Table 3.1-4 Parameters of the 100M Ethernet Multimode Optical Interface (Receiving) Parameter Symbol Min. Value Typical Value Max. Value Unit Minimum of input optical power IN Min (edge of eye pattern) (average) Minimum of input optical power IN Min...

  • Page 52: Table 3.1-6 Parameters Of The 100M Ethernet Single-Mode Optical Interface (Receiving)

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Parameter Symbol Min. Value Typical Value Max. Value Unit Bellcore TR-NWT-000253 and the ITU G.957 Recommendations Optical pulse rise time Optical pulse fall time Data input current (low) -200 Data input current (high) Data input voltage (low level) Vil-Vcc -1.81...

  • Page 53: Table 3.1-7 Parameters Of The 1000M Multimode Optical Transmitter

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Parameter Symbol Min. Value Typical Value Max. Value Unit time (1-0) Power supply noise suppression PSNR 3.1.4.5 1000M Ethernet Optical Interface Indices General characteristics of the 1000M optical interface Rate: 1000 Mbit/s; Format: 1000BASE-SX/LX(IEEE802.3z);...

  • Page 54: Table 3.1-8 Parameters Of The 1000M Multimode Optical Receiver

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Optical characteristics of the receiver (ambient temperature: 0°C to 70°C): See Table 3.1-8. Table 3.1-8 Parameters of the 1000M Multimode Optical Receiver Min. Typical Max. Parameter Symbol Unit Note Value Value Value Input optical power Note 7...

  • Page 55: Table 3.1-9 Parameters Of The 1000M Single-Mode Optical Transmitter

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Table 3.1-9 Parameters of the 1000M Single-Mode Optical Transmitter Min. Typical Max. Parameter Symbol Unit Note Value Value Value Output optical power 9 mm SMF -9.5 Note 1 (Average) Output optical power -11.5 -3 -3...

  • Page 56: Capacity Indices

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Note 5: TP is the turning point defined in IEEE 802.3 z 38.2.1. Note 6: The receiver sensitivity is sampled in the center of the eye pattern and measured in the worst deterioration of the extinction ratio.

  • Page 57: Vtief

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 3.2.2 VTIEF A VTIEF provides 24 VDSL subscriber interfaces, with the maximum transmission distance of 1 km. Its indices include: Height of VTIEF: 9U. Each VDSL line provides 10 Mbps bi-directional transmission rate over 0.4 mm line width within 1 km transmission distance.

  • Page 58: Splitter Board

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 3.2.4 Splitter Board Splitter boards consist of passive splitter boards and active splitter boards: Splitter boards include PSUN/VSEN. The passive splitter board detaches voice signals from DSL signals and prevents performance and reliability of DSL lines from being affected by phone hook-off/hook-on and other interference.

  • Page 59: Fec

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. An EICMB is composed of the EICM on the base plate of Ethernet uplink unit and an enhanced Ethernet subboard FNC. The subboard FNC provides four channels of 10/100M Ethernet electrical interfaces conformable to IEEE 802.3u Standards and four channels of 100M optical interfaces.

  • Page 60: Enhanced Ethernet Subboard (Fnc Card)

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 3.2.7 Enhanced Ethernet Subboard (FNC card) An enhanced Ethernet subboard provides four channels of 10/100M self-adaptive Ethernet electrical interfaces conformable to IEEE 802.3u Standards and four channels of 100M optical interfaces. Various interfaces may be used as uplink interfaces or Ethernet user interfaces.

  • Page 61: Line Protection & Control Board (Ltc)

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 3.2.9 Line Protection & Control Board (LTC) The LTC is used to control the M+1 protection part on each splitter board and enable line capturing from the test bus to external test interfaces. This board communicates with a SCBF by means of a serial interface.

  • Page 63: Hardware Structure

    4 Hardware Structure This chapter introduces the hardware structure of the system, including the single-frame configuration and integrated equipment configuration of the system. Besides, it introduces the functions, principles, and interfaces of the system boards. And this helps the user better understand the hardware structure of the system. 4.1 Overall Architecture of the System The ZXDSL 9210 system adopts a 17U 2-layer frame structure.
  • Page 64 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Between modules in the system, point-to-point connections are adopted and we call them switching bus. The switching bus within the system falls into two groups: Data (G.Link) paths and control (HDLC) paths. The SCBF implements its own and external network management, conducts management and control of line interface boards, and processes communication protocols.

  • Page 65: Cabinet

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 4.1.1 Cabinet The ZXDSL 9210 frame can be inserted into a DSL cabinet (Depth: 800) or a DSL cabinet (Depth: 600). Dimensions of the DSL cabinet (800 deep): 2,000 mm × 600 mm × 800 mm (H × W × D).

  • Page 66: Fig. 4.1-3 Size Of The Dsl Cabinet (Depth: 600)

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Fig. 4.1-3 Size of the DSL Cabinet (Depth: 600)

  • Page 67: Frame

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 4.1.2 Frame The ZXDSL 9210 frame is structurally shown in Fig. 4.1-4. up link up link CONSOLE CONSOLE Fig. 4.1-4 ZXDSL 9210 Frame 4.1.3 Single-frame Configuration The structure of a single frame of ZXDSL 9210 with full configuration is shown in Fig. 4.1-5.

  • Page 68: Arrangement Diagram Of Integrated Equipment

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Fig. 4.1-5 Board Configuration of Single Frame Fig. 4.1-5 shows the board slot No. Slot No.s, from left to right, are in turn 1 to 17. The single frame (full configuration) of the ZXDSL 9210 equipment is composed of two SCBFs (one active and the other standby), 14 line interface boards, and one uplink board.

  • Page 69: Fig. 4.1-6 Configuration Of The Integrated Equipment (Dsl Cabinet (Depth: 800))

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. up link up link CONSOLE CONSOLE up link up link CONSOLE CONSOLE POWER TESTING CableSHARK Rackmonut x DSL Cable Qualifier ERROR 1. Power distributor 2. ZXDSL 9210 frame 3. Fan plug-in box 4.

  • Page 70: Introduction To Boards

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The power distributor supports the input of two lines of –48 VDC. It outputs three lines of –48 VDC at the output terminal to three busbar segments, providing power supplies for two ZXDSL 9210 frames and one EPM monitoring plug-in box.

  • Page 71: Fig. 4.2-1 Operating Principles Of Scbf

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Control the operation of various line interface boards. CPU is connected via an HDLC control channel with line interface board to control all ports in the system; Extract the running information of various line interface boards; Implement the NM functions of the system.

  • Page 72: Vtief

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The CPU module controls boards in the system and implements external network management. The HDLC controller is used to control the HDLC information between boards in the system. The Ethernet processor is responsible for data switching & convergence between boards in the system.

  • Page 73: Fig. 4.2-2 Operating Principles Of Vtief

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Implements the transfer of bi-directional 10M Ethernet frame information 1.15 km away over AWG26 twisted pairs (and 1.3 km away over AWG24 twisted pairs). The Central Office (CO) equipment implements software/hardware control of the CPE MODEM by means of the internal bus.

  • Page 74: Atign

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 4.2.3 ATIGN 4.2.3.1 Functions of ATIGN The ATIGN provides access of ADSL service subscribers. It can be accessed by 32 ADSL users and converts ATM cells into IP cells. The major functions of the board are as follows: Provides 32 channels of ADSL user access in ATM mode.

  • Page 75: Fig. 4.2-3 Operating Principles Of Atign

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 4.2.3.2 Operating Principles of ATIGN The operating principles of ATUG board are shown in Fig. 4.2-3. ADSL module ATM/IP transfer module HDLC controller Ethernet processor HDLC channel G. Link bus Backplane Fig.

  • Page 76: Vdsl Splitter Board (Vsen/Vset)

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 4.2.4 VDSL Splitter Board (VSEN/VSET) 4.2.4.1 Functions of VDSL Splitter Board The VDSL splitter board detaches voice signals from VDSL signals to avoid the impacts such as telephone hook-on/hook-off and interferences on the performance and reliability of the VDSL line.

  • Page 77: Psun/Psut

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. to even channels of subscriber lines are converged; all test and protective buses are converged to the LTC, which implements protective switchover and tests. The operating principles of the VTIEF are illustrated in Fig. 4.2-5. VTIEF VSET board Relay...

  • Page 78: Eicm

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The operating principles of PSUN are shown in Fig. 4.2-6. PSUN board Over-current and over-voltage Subscriber PSTN Transformer Transformer protection line components Peripheral components Fig. 4.2-6 Operating Principles of PSUN Two relays are used in each subscriber line. The relay outside the splitter provides the test function while that inside the splitter provides the protection.

  • Page 79: Fig. 4.2-8 Operating Principles Of Ethernet Interface Subcards

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. EICMA provides four 10/100M Ethernet electrical interfaces and four 100M single-mode optical interfaces in compliance with IEEE 802.3u via FEC subcard. EICMB provides four 10/100M Ethernet electrical interfaces and four 100M single-mode optical interfaces in compliance with IEEE 802.3u via FNC subcard.

  • Page 80: Eicg

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The Ethernet processor implements switching between ports within boards and provides the G.Link bus responsible for switching and convergence between SCBF and other boards in the system. The Ethernet module implements Ethernet user access. The Ethernet uplink subcard and Ethernet interface base plate implement G.Link bus switching between subcard and backplane by means of a switching chip.

  • Page 81: Fig. 4.2-9 Operating Principles Of Eicg

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 4.2.7.2 Operating Principles of EICG EICG is used to provide uplink ports or networking, and its operating principles are shown in Fig. 4.2-9. 1,000M Ethernet module HDLC controller Ethernet processor G.Link bus HDLC channel Backplane Fig.

  • Page 82: Ltc

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 4.2.8 LTC 4.2.8.1 Functions of LTC The LTC provides the following functions: It communicates with the SCBF by means of the backplane, to obtain configurations and commands for protection and test functions. The test bus leading out of the test splitter board is connected via a backplane with the LTC, and with a tester via the RJ45 interface (silkprinted as T1) on the backplane to implement line test functions.

  • Page 83: Embedded Bas (Rpck)

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 4.2.9 Embedded BAS (RPCK) 4.2.9.1 Functions of RPCK RPCK implements the following functions: Connection with wide area broadband data networks. Responsible for deep-level protocol processing. Implements Layer 3 forwarding of Ethernet user data and implements embedded BAS functions.

  • Page 84: Backplane (Mdsla)

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual tables; the main control unit and protocol processor process control packets, establish user forwarding tables, and deliver them to the network processor. 4.2.9.3 RPCK Interfaces RPCKG provides one Gigabit Ethernet optical interface (GE interface) used for uplink on the network side.
  • Page 85 Chapter Erro! Estilo não definido. Erro! Estilo não definido. and line interface boards, board selection signals, protection bus and test bus between splitter boards and LTC. 4-23...

  • Page 87: System Software

    5 System Software This chapter introduces the overall software structure of the system and software structure of various boards. And this will help the user better understand the software structure of the system. 5.1 Overview The system software of ZXDSL 9210 consists of two parts: ZXDSL 9210 system software which runs on the SCBF and embedded BAS system software which runs on the embedded BAS.

  • Page 88: Zxdsl 9210 System Software

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 5.3 ZXDSL 9210 System Software The overall block diagram of the ZXDSL 9210 system software is shown in Fig. 5.3-1. L3/4 protocol subsystem L2 switching protocol subsystem Bearer subsystem Operation support subsystem BSP subsystem Hardware platform Fig.
  • Page 89 Chapter Erro! Estilo não definido. Erro! Estilo não definido. forwarded from the SCBF. The SNMP PROXY module is responsible for unified management of multiple pieces of equipment. L2 switching protocol subsystem The L2 switching protocol subsystem consists of the modules STP, IGMP SNOOPING, and TRUNKING.

  • Page 90: Zxdsl 9210 System Software Subsystem

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Bearer subsystem The bearer subsystem is composed of the MUX module, SWAPI module, switching chip drive module, VDSL chip drive module, and ADSL drive module. It isolates the upper-level software system from the details of switching chip hardware operations so that the specific hardware system structure and operations is unnecessary to be considered in service layer design.

  • Page 91: Subscriber Management Subsystem

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. SNMP PROXY module This module is responsible for unified management of multiple pieces of equipment and forwards SNMP-related messages between the SCBF and embedded BAS. 5.4.2 Subscriber Management Subsystem The subscriber management subsystem provides authentication and authority capabilities over VDSL and ADSL access subscribers, and delegates authorities for access to subscriber connection access ports according to the RADIUS Server authentication result.

  • Page 92: System Control Subsystem

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual This module provides RADIUS Client. It sends users’ information a specified RADIUS server and then takes actions according to different responses made by the server. The RADIUS server generally runs on a workstation. Its task is to receive requests from customers, authenticates users’...
  • Page 93 Chapter Erro! Estilo não definido. Erro! Estilo não definido. Save, clear, and read configuration information. This function is used to save configuration information in NVM, clear and read configuration information from NVM. Read all configuration information from NVM when the SCBF is started. Read all configuration information from NVM to the memory when the SCBF is started, and send it to related modules.
  • Page 94 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual responsible for board slot status detection, reporting of board slot information, restarting of line interface board, active/standby switchover detection, status indicator control, and hot-swap control. Active/standby switchover part Active/standby switchover detection is implemented by software and hardware. First, an interlock circuit is created in hardware and software is enabled to start the output of interlock signals and lock an opposite end control board.
  • Page 95 Chapter Erro! Estilo não definido. Erro! Estilo não definido. registered at various modules from the module, and sends it to the standby board. Control module on the line interface board The control module on the line interface board completes the following tasks: Control the initialization of the whole line interface board.

  • Page 96: Database Subsystem

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual board is powered on, the kennel program in BootRom will be first run to call an application program version. During the system running, users may download a new version by means of remote NM requests. Any new version will be downloaded to the SCBF and sent via the HDLC link to the line interface board.

  • Page 97: L2 Protocol Subsystem

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 5.4.6 L2 Protocol Subsystem The L2 protocol subsystem is responsible for implementation of Layer 2 switching protocol. The L2 switching protocol subsystem consists of the STP module, TRUNKING module, and IGMP SNOOPING module. They are described as follows: STP module This module implements STPs.
  • Page 98 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual establishes a high-performance link between a pair of systems. Besides, when a certain link becomes invalid, though available bandwidth is reduced, the aggregation link is still able to run normally. Simply speaking, the link aggregation technology means binding multiple point-to-point connections between two pieces of Ethernet equipment to form a logic connection.

  • Page 99: Service Control Subsystem

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. The IGMP SNOOPING protocol module runs on the SCBF and all user ports support the IGMP SNOOPING protocol. 5.4.7 Service Control Subsystem The service control subsystem controls various services. It is composed of the service control module and test module.
  • Page 100 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Port-based priority control Supports the setting of port priority and ensures that high-priority data stream enjoys higher bandwidth or priority processing. User log User logs are used to trace access users. Employ user logs to record users’ network access IP, MAC, and port No.

  • Page 101: Bearer Subsystem

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. PING test function Users may PING remote users from the SCBF CPU to detect the running status of links. 5.4.8 Bearer Subsystem The bearer subsystem separates the details of hardware operations of upper-layer software and bottom layer switching chips and this makes service layer designers unnecessarily concerned about specific hardware architecture and operations.

  • Page 102: System Software Of Embedded Bas

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 5.5 System Software of Embedded BAS A block diagram of the overall structure of embedded BAS system software is shown in Fig. 5.5-1. Service subsystem (RADIUS/VPN/TOS) Service subsystem (PPP/IP protocol stack) Bearer subsystem (microcode/line speed forwarding)

  • Page 103: System Software Subsystem Of Embedded Bas

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. packet encapsulation processing and routing; makes statistics on the traffic flows at various ports. The bearer subsystem implements priority functions. Operation maintenance subsystem: Provides the system with security management, configuration management, fault management, performance management, and accounting management, and provides operation interface for the users.
  • Page 104 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Update maintenance of system forwarding table. Routing and forwarding for protocol control packets and packets. The control process of setup, maintenance and release of UNI and NNI interface service sessions. AAA for accessed sessions. Routing protocol processing and AAA protocol processing.
  • Page 105 Chapter Erro! Estilo não definido. Erro! Estilo não definido. L2TP submodule: Supports LAC and LNS. AAA submodule: Provides support for the AAA. 10. Routing submodule: Used to update global forwarding tables and local forwarding tables, and provide update interfaces and maintenance interfaces for forwarding tables.

  • Page 106: Bearer Subsystem

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 5.6.2 Bearer Subsystem The structure of the bearer subsystem is shown in Fig. 5.6-1. Forwarding part Line interface Statistics engine Forwarding engine Routing engine submodule submodule submodule Control part Connection control module Fig.

  • Page 107: Operation & Maintenance Subsystem

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Supports priority settings based on user ports, and supports priority functions based on 802.1p, TOS or DSCP. The bearer subsystem consists of four submodules: Forwarding engine submodule, routing engine submodule, statistics engine submodule, and connection control submodule.
  • Page 108 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual the subsystem distributes operations by means of inter-module communication to various specific modules, returns protocol execution results, and sends them to a user terminal. The command execution flow is briefly described as follows: The user logs on to the system via the CONSOLE port or Telnet.

  • Page 109: System Control Subsystem

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 5.6.4 System Control Subsystem The control subsystem consists of four submodules: System configuration submodule, fault management submodule, reliability submodule, and man-machine submodule. Its functions are as follows: Power-on self-test and initialization of hardware. Software initialization.

  • Page 110: Database Subsystem

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 5.6.5 Database Subsystem. The database subsystem is composed of database kernel and application database, the relation between which is shown in Fig. 5.6-3. Application database Application program Database kennel Operating system kennel and BSP Fig.

  • Page 111: Service Control Subsystem

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Alarm data module: Used to classify, record, filter, and shield various pieces of alarm information, and record history alarms. Performance statistics module: Used to record various performance statistics data in realtime operation of the system. Log management module: Daily records related to alarms, operation &...

  • Page 112: Operation Support Platform

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual submitted to this master control process for processing. The master control process admits or rejects a user session setup request depending on the pre-configured system resource allocation and the current resource utilization. These static and dynamic data, such as system resource configuration and the current utilization, are under unified management of the database module.
  • Page 113 Chapter Erro! Estilo não definido. Erro! Estilo não definido. Protocol resource: Establishment of protocol entity. Switching resources: Service-related routing table items and adaptation processing. Management resource: Authentication and accounting of this service. From the viewpoint of management, the above resources can be divided into system resources and user resources.

  • Page 114: Interfaces

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The NM interface of ZXDSL 9210 provides different configuration interfaces for the local contexts and user contexts, so as to ensure the configuration security of the whole system and configuration flexibility for different users. A context has its own IP routing table, RADIUS client and subscriber loop records.

  • Page 115: Bindings

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Before upper-layer user data are able to flow over a physical port or circuit, the physical port or circuit must be associated with an interface, a bypass, or a tunnel in a certain context.

  • Page 117: Interfaces And Communication

    ATM network. Ethernet interfaces, together with the embedded BAS or distributed BAS equipment (for example, ZXDSL 9210 by ZTE), are responsible for user authentication/management/accounting to make an IP network operable and manageable, as shown in Fig. 6.1-1 and Fig. 6.1-2.

  • Page 118: Fig. 6.1-1 Schematic Diagram Of Uplink Networking Of Ethernet Interface

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Public network Modem Fig. 6.1-1 Schematic Diagram of Uplink Networking of Ethernet Interface (Adopting embedded BAS) Public network Modem Fig. 6.1-2 Schematic Diagram of Uplink Networking of Ethernet Interface (Adopting distributed BAS equipment) 6.1.1.2 Brief Introduction to Ethernet Interface Signaling (Physical Layer) Supports RFC1483 bridging protocol.
  • Page 119 Chapter Erro! Estilo não definido. Erro! Estilo não definido. Supports STP. Supports PPPoE protocol. Supports IPoE. 6.1.1.3 Brief Introduction to Ethernet Interface Signaling (Data Link Layer) Multicast. Radius protocol 802.1X protocol NAT protocol VBAS protocol. 6.1.1.4 Type of Ethernet Interfaces ZXDSL 9210 provides different Ethernet uplink interfaces to meet users’...

  • Page 120: User Interface

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 6.1.2 User Interface 6.1.2.1 Overview ZXDSL 9210 provides Telnet remote login access and Command Line Interface (CLI) which hyper terminals are accessed via a serial interface. In addition, ZXDSL 9210 provides external SNMP interfaces for the sake of unified NM of the equipment. Serial port login does not need special software, but needs HyperTerm self-contained in Windows operating system.
  • Page 121 Chapter Erro! Estilo não definido. Erro! Estilo não definido. mode of the SCBF, users may use the command logout to terminate the CLI management mode of the ZXDSL 9210 system. In the SCBF, the system prompt is DSL# (operator mode) or DSL$ (administrator mode).

  • Page 122: Introduction To Protocols

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The relationship between various modes of ZXDSL 9210 is shown in Fig. 6.1-3. Control & switching board part Control & switching board Operator exec Embedded BAS part Control & switching Administrator exec board Administrator exec Global configuration...

  • Page 123: Rfc1483 Bridging Protocol

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. field must contain necessary information to identify a routing protocol or bridging protocol. In LLC encapsulation, this information is coded in the LLC header and is put before packets born. The RFC1483 bridging mode uses LLC encapsulation of bridging protocols.

  • Page 124: Fig. 6.2-2 Status Flow Of Ppp

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 6.2.3.1 State Flow of PPP The state flow of PPP is shown in Fig. 6.2-2. opened Establishment Mute Authentication fail fail success/none Link termination Network layer period down closing protocol period Fig.
  • Page 125 Chapter Erro! Estilo não definido. Erro! Estilo não definido. protocol packets, and link quality monitoring packets can be switched, while other types of packets are all discarded without being processed. Network stage After PPP completes the previous stages, it enters this stage. In this case, the corresponding NCP is required to configure the corresponding network protocol.
  • Page 126 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual mainly includes both parties’ network IDs and node numbers. One or more network layer protocols are selected and configured by means of NCP negotiation. After the successful configuration of each selected network layer protocol, this network layer protocol can send messages via this link.

  • Page 127: Pppoe Protocol

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 6.2.3.4 PPP Encapsulation PPP encapsulation makes it possible to multiplex different network layer protocols over the same link. The format of PPP encapsulation is shown in Fig. 6.2-3. Protocol Field 8/16 bits Information Field Filler Field Fig.

  • Page 128: Fig. 6.2-4 Pppoe Protocol Over Ethernet

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual For PPPOE protocol, refer to RFC2516. PPPoE implements PPP frame adaptation over Ethernet, and provides PPP connection over Ethernet. The PPPoE protocol stack over Ethernet is shown in Fig. 6.2-4. PPPoE Ethernet Fig.
  • Page 129 Chapter Erro! Estilo não definido. Erro! Estilo não definido. Discovery stage The discovery stage includes four steps. When this stage completes, both ends of communication know the current PPPOE SESSION_ID and the Ethernet address of the opposite end. These two values are used to uniquely define a PPPOE session.

  • Page 130: Vlan Protocol

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 6.2.4.2 PPPoE Protocol Applications PPPoE technical specifications receive extensive support and have currently become the first priority of broadband access operators in selecting a broadband access mode. Fig. 6.2-6 summarizes various stage of data encapsulation when the PPPoE mode is used.
  • Page 131 Chapter Erro! Estilo não definido. Erro! Estilo não definido. A VLAN is a logic subnet and consists of ports and equipment configured as belonging to this VLAN. These pieces of equipment can be located at any place within a switching area. To enable any information to reach different VLANs, Layer 3 must be used for routing, therefore VLAN is relatively secure.

  • Page 132: Fig. 6.2-7 Format Of Tag Header

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual When frames are transmitted over network, there must be some way to show they belong to this VLAN instead of that one. Thus, a bridge may forward them to those ports belonging to this VLAN instead of all ports as usual. This method is called VLAN tagging.

  • Page 133: Stp

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. any frame received is not tagged, PVID in the VLAN port configuration must be as correct as possible. 6.2.6 STP In Ethernet, a bridge extends physical scope of network. When running, a bridge checks the MAC sublayer address, and uses the destination address and source address in an Ethernet frame as the basis for determine its forwarding direction.

  • Page 134: Fig. 6.2-8 Communication Flow Of Access Authentication And Authorization With One Or Multiple

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The RADIUS protocol is the user access authentication protocol for remote dial-up access. RADIUS information packets are encapsulated as UDP packets. The destination port address of the RADIUS UDP packets is 1812 while that of the RADIUS accounting UDP packet is 1813.
  • Page 135 Chapter Erro! Estilo não definido. Erro! Estilo não definido. The remote user establishes a connection with ZXDSL 9210 via PPP dial-up. The SCBF of ZXDSL 9210 accepts this remote user’s connection and receives the user name and password input by the user. The SCBF sends the user’s user name and password via the G.Link channel to an embedded BAS.

  • Page 136: Protocol

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 11. Upon receiving an authentication success response, the embedded BAS sends an acknowledgment to the remote user (by means of PAP or CHAP). 12. If still unable to receive any response from the RADIUS server, the embedded BAS considers that the RADIUS server has been switched off and denies this user’s Internet access by means of the SCBF.
  • Page 137 Chapter Erro! Estilo não definido. Erro! Estilo não definido. section; it can also be a logic port, for example, the IEEE 802.11 combined entity between a site and an access point. Port access entity A protocol entity associated with a port. It supports the protocol function associated with the authenticator, supplicant or both.
  • Page 138 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual The supplicant PAE may initiate authentication switching and implements EAPOL-Logoff switching. 6.2.8.3 802.1X Protocol Process The authentication occurs during system initialization or when the supplicant system is connected with a port of the authenticator system. Before authentication succeeds, the system can only gain access to the authentication system for authentication switching;...

  • Page 139: Fig. 6.2-9 Session Flow Of Authentication Switching Among The Supplicant, Authenticator, And

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Br i dge Laptop R adi us Ser ver Et her net Por t connect Access bl ocked R AD I U S EAPO L EAPO L- St ar t EAP- R equest / I dent i t y R adi us- Access- R equest EAP- R esponse/ I dent i t y R adi us- Access- C hal l enge...

  • Page 140: Fig. 6.2-10 Eapol Frame Format Of 802.1 Ethernet

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual the correctness in accounting. The process is transparent to the user, that is, the user does not need to put his user name and password again. 6.2.8.4 802.1X Message Encapsulation The EAPOL frame format of Ethernet is shown in Fig. 6.2-10 and starts from the Length/Type domain of the MAC frame.

  • Page 141: Multicast

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 6.2.9 Multicast 6.2.9.1 Overview Multicast, a network technology, allows one or multiple senders (multicast source) to send a single packet to multiple receivers (at one time and simultaneously). Multicast sources send packets to a specific multicast group; only those addresses in this multicast group can receive packets.
  • Page 142 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual means that the host requires multiple IP and Ethernet addresses. The IP address scheme allocates an address range specially for the multicast. IPv4 contains class-D addresses within the range of 224.0.0.0 to 239.255.255.255; class-D addresses are classified into partial link multicast addresses, reserved multicast addresses, and management authority multicast addresses.
  • Page 143 Chapter Erro! Estilo não definido. Erro! Estilo não definido. Exit from a multicast group In the IGMP v1, when a host leaves a multicast group, it will exit automatically. The multicast router periodically (for example, once every 120 seconds) uses the "member qualification query"...
  • Page 144 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual hierarchical DVMRP is proposed, which divides multicast network into areas; the multicast in each area can be executed according to any protocol; trans-area multicast can be executed by a border router via the DVMRP. Routing overhead can be greatly reduced.

  • Page 145: Vbas Protocol

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. Multicast route within the OSPF area: Used to know about multicast members within various network segments, and construct right SPTs (Source network: S. Group: G); Multicast route between MOSPF areas: Used to gather the member relations in an area and release the group member relationship records in the backbone (Area 0) of the Autonomous System (AS);...
  • Page 146 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual After the user host receives the confirmation packet from the selected BAS, it begins PPP session with the BAS according to the Session ID and enters the PPP session stage. Meanwhile, it sends an identity authentication request packet to the BAS (implemented by means of LCP in point-to-point);...

  • Page 147: Fig. 6.2-12 Ppp Authentication When Vbas Process Is Added

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. The whole login interaction is shown in Fig. 6.2-12: RADIUS User ZXDSL 9210 Server 1. Session origination request broadcast packet 2. Service provision data packet 3. Session request data packet 4. Session request confirmation data packet 5.

  • Page 149: Service Functions

    In addition, the transmission rate of DSL access is absolutely unmatchable for dial-up Internet access and ISDN Internet access. The ZXDSL 9210 system by ZTE can reach a bi-directional transmission rate of 10M. Therefore, it is especially suitable for those enterprises which expect to know about the information about scientific &...

  • Page 150: Fig. 7.2-1 High-Speed Internet Access (Adopting Distributed Bas Equipment)

    The ZXDSL 9210 system can be used together with an embedded BAS or a distributed BAS (for example, ZXDSL 9210 by ZTE) to perform users’ access authentication and accounting. ZXDSL 9210 can also implement the 802.1q VLAN function and can isolate different subscribers completely to guarantee security of subscriber access.

  • Page 151: Fig. 7.2-3 Vod (Take For Example The Case When An Embedded Bas Is Installed)

    The ZXDSL system, together with a distributed BAS equipment (for example, ZXDSL 9210 by ZTE), implements the VPN function and establishes the connection between organization users and their branches. The VPN function guarantees information security in a WAN. Furthermore, the VLAN function of ZXDSL 9210 guarantees information security at the access layer.

  • Page 152: Broadband O&M Functions

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual MODEM ZXDSL 9210 SERVER router SERVER router PSTN Company branch Headquarters of the company Fig. 7.2-4 Remote Enterprise LAN Access Attention: The embedded BAS in this version cannot implement any VPN function, which is only implemented by a distributed BAS.
  • Page 153 Chapter Erro! Estilo não definido. Erro! Estilo não definido. Routine deployment tests Conduct tests of line performance parameters and estimated deployment rate after user ports are installed on a distribution frame. Users can pre-evaluate user lines and save pre-evaluation results to a database for the sake of future maintenance and troubleshooting.

  • Page 155: Networking Modes And System Configuration

    8 Networking Modes and System Configuration This chapter introduces the networking modes of ZXDSL 9210 and describes system configurations. It exemplifies different configuration methods when the system is in mode of IP uplink networking. 8.1 Networking Mode Mainly in IP networking mode, ZXDSL 9210 supports ADSL, VDSL, and Ethernet user access.

  • Page 156: Fig. 8.1-1 Schematic Diagram Of Uplink Router Networking (Adsl And Vdsl User Access)

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Subscribe premises ZXDSL 9210 Twisted equipment pair Splitter Splitter 9210 Phone Network service provider MODEM PSTN backbone Router switch network AAA server Fig. 8.1-1 Schematic Diagram of Uplink Router Networking (ADSL and VDSL user access) Fig.

  • Page 157: Uplink Bas Equipment

    If ZXDSL 9210 is not equipped with any embedded BAS, the equipment is connected uplink with a BAS (ZTE UAS2500 or UAS5000 can be used) to implement user AAA. Fig. 8.1-3 shows the connection between ZXDSL 9210 and BAS when ADSL and VDSL users are accessed.

  • Page 158: Convergence Of Multiple 9210 Devices

    ADSL, VDSL, and Ethernet user access are similar to each other, therefore ADSL or VDSL user access networking is taken for example. As shown in Fig. 8.1-5, the equipment is connected uplink with a BAS (ZTE UAS2500 or UAS5000 can be used).

  • Page 159: Chain Networking With Multiple 9210 Devices

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 8.1.4 Chain Networking with Multiple 9210 Devices The chain networking with multiple ZXDSL 9210 devices implements cascade of multiple ZXDSL 9210 devices for the sake of user access in a large-scale cell. The chain networking is shown in Fig.

  • Page 160: Star Networking With Multiple 9210 Devices

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual 8.1.5 Star Networking with Multiple 9210 Devices The star networking with multiple ZXDSL 9210 devices implements cascade of multiple ZXDSL 9210 devices for the sake of user access in a large-scale cell. The chain networking is shown in Fig.

  • Page 161: System Configuration

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 8.2 System Configuration This section introduces typical configurations of ZXDSL 9210, which are combined and configured flexibly as required by users in practical applications. The system provides six kinds of subscriber interface boards. The capacity of each kind of subscriber interface board is calculated as follows.
  • Page 162 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual ADSL access mode ADSL access is also a major access mode of the ZXDSL 9210 system. Its typical configuration is as follows: 1 SCFB + 1 FEC + 1 LTC + 15 ATIGN + 15 PSUN + backplane + frame The capacity is 480 (32*15) ADSL subscribers;...

  • Page 163: Examples

    Chapter Erro! Estilo não definido. Erro! Estilo não definido. 8.3 Examples 8.3.1 Networking Analysis The networking diagram as shown in Fig. 8.3-1 is a typical configuration of ZXDSL 9210. The Ethernet Layer 2 subboard is responsible for Ethernet user access. Twisted Network pair...

  • Page 164: Application Features

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Part Name Code Unit Quantity Remarks Backplane MDSLA Frame Piece 19-inch Rack Piece 2m (standard) Subscriber cable Actual length Uplink network cable ADSL MODEM VDSL MODEM This system provides 10M bandwidth for each VDSL user and each Ethernet user with, and the downlink rate of up to 8M for each ADSL user.
  • Page 165 Chapter Erro! Estilo não definido. Erro! Estilo não definido. load. The ZXDSL 9210 system adopts frequency-division multiplexing to transmit both voice and data signals, and uses the voice splitter to divert data services effectively. This practice effectively prevents IP services from flowing into the telephone network, which not only relieves switch load, but saves a large amount of unnecessary expenditures for users.

  • Page 167: Appendix A Terms And Definitions

    Appendix A Terms and Definitions A.1 Asymmetric Digital Subscriber Line (ADSL) ADSL, a digital subscriber line technology, adopts the advanced digital modulation mode. It transmits high-speed digital signals over traditional analog subscriber lines and its downlink rate is higher than its uplink rate. A.2 Access Network (AN) AN is a implementation system which consists of a series of transmission entities (such as line facilities and transmission facilities) between the Service Node Interface (SNI)

  • Page 168: Adsl Transceiver Unit, Central Office End (Atuc

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual A.5 ADSL Transceiver Unit, Central Office End (ATUC) ATUC is required to be high-density, but low power consumption. It receives uplink data stream and transmits downlink data stream. A.6 ADSL Transceiver Unit, Remote End (ATUR) ATUR is required to be low-cost and low power consumption.

  • Page 169: Media Access Control (Mac

    Erro! Estilo não definido. Erro! Estilo não definido. image network provides image service alone. Each user using different communication services has a special set of independent use access lines, user-network interfaces, and terminals for each service. This leads to much waste. The concept of ISDN simply solves this problem logically, that is, an integrated network is used to substitute multiple separate private Networks.

  • Page 170: Very High-Speed Digital Subscriber Line (Vdsl

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual A.15 Very high-speed Digital Subscriber Line (VDSL) IP-based VDSL generally adopts QAM. uses unique modulation/demodulation hardware to connect both ends of existing twisted pairs and creates a 3-channel duct: A high-speed uplink channel, a high-speed downlink channel (to subscriber premises), and a low-frequency channel (0kHz to 900kHz).

  • Page 171: Appendix B Applicable Standards

    Appendix B Applicable Standards B.1 ADSL Standards Table B.1-1 ADSL Standards Standard No. Standard Name YDN 078-1998 Technical Specifications for AN -ADSL YD/T 1055-2000 AN Equipment Tests-ADSL with Voice Splitter YD/T 1064-2000 Technical Requirements for AN –Low-speed ADSL.Lite without Voice Splitter ANSI T1.413-1998 Telecom.

  • Page 172: Ethernet/L2/L3 Related Standards

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Standard No. Standard Name Standard No. Standard Name B-ISDN Users- Network Interface Physical Layer Specifications: 155 520 kbit/s and 622 ITU-T I.432.2(1999.2) 080 kbit/s ITU-T I.610(1999.2) Principles and Functions of B-ISDN Operation & Maintenance (OAM) ITU-T I.630(1999.2) B-ISDN Operation &...
  • Page 173 Erro! Estilo não definido. Erro! Estilo não definido. Standard No. Standard Name IETF RFC1661 Point-to-Point Protocol (PPP) Management Information Base of TCP/IP-based Internet Network Management: MIB-II. RFC1213 K. McCloghrie, M.T. Rose.Mar.1 1991 RFC1643 Definitions of Managed Objects of Ethernet Interface Types. F. Kastenholz. July 1994 RFC1757 Remote Network Monitoring MIB.

  • Page 174: National Standards

    ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Standard No. Standard Name IEEE 802.3x Full Duplex and Flow control on 10BaseT and 100BaseT ports. IEEE 802.3u, 100BaseTX and 100BaseFX specification. IEEE 802.3z 1000BaseX specification. B.4 National Standards Table B.4-1 National Standards Standard No.
  • Page 175 Erro! Estilo não definido. Erro! Estilo não definido. Standard No. Standard Name (Shock) Noise Immunity Experiments (idt IEC 61000-4-5:1995) Electromagnetic Compatibility Experiments and Measurement Technologies RF Field GB/T 17626.6 -1998 Induction Conduction Disturbance Noise Immunity (idt IEC 61000-4-6:1996) Electromagnetic Compatibility Experiments and Measurement Technologies Industrial GB/T 17626.8 -1998 Frequency Magnetic Field Noise Immunity Experiments (idt IEC 61000-4-8:1993) Radio Disturbance Limit Value and Measurement Methods of Information Technology...

  • Page 177: Appendix C Abbreviations

    Appendix C Abbreviations Abbreviations Full Name AAL5 ATM Adaptation Layer 5 ADSL Asymmetric Digital Subscriber Line ANSI American National Standard Institute Asynchronous Transfer Mode ATUC ADSL Termination Unit-Center Office ATUR ADSL Termination Unit-Remote Broad-band Access Server Bit Error Rate Carrierless Amplitude/Phase Modulation Command Line Interface Central Office Customer Premises Equipment...
  • Page 178 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual Abbreviations Full Name Internet Protocol Internet Server Provider International Telecommunications Union International Telecommunications Union- ITU -T Telecommunications Standard Sector Local Area Network LVDS Low Voltage Differential Signaling Media Access Control Management Information Base Multi-Virtual Line Network-Network Interface Optical Line Terminal...
  • Page 179 Erro! Estilo não definido. Erro! Estilo não definido. Abbreviations Full Name User Network Interface Universal Serial Bus UTOPIA Universal Test & Operations PHY Interface for ATM Virtual Connection Virtual Channel Virtual Channel Connection Virtual Channel Identifier VDSL Very high-speed Digital Subscriber Line VLAN Virtual Local Area Network Video On Demand...

  • Page 181: Appendix D Index

    Appendix D Index 100BASE-FX interface indices........................3-10 ADSL access mode ............................1-9 Applicable standards ............................2-2 ATM technology ............................1-7 Basic service functions..........................7-1 Board indices .............................3-16 Broadband O&M functions..........................7-4 Capacity indices ............................3-16 Environment conditions ..........................3-3 Examples..............................8-9 Functions..............................2-3 Fundamental principles of DSL ........................1-4 Interface indices ............................3-4 Interfaces..............................6-1 Introduction to basic BAS concepts......................5-26 Introduction to boards ..........................4-8...
  • Page 182 ZXDSL 9210 (V3.1) Broadband Universal Access Equipment Technical Manual VDSL access mode............................ 1-10 ZXDSL 9210 system software........................5-2...

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