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ZXDSL 9806HZTE Broadband Universal Access System
Hardware Description Manual
Version 2.0
ZTE CORPORATIONZTE Plaza, Keji Road South,Hi-Tech Industrial Park,Nanshan District, Shenzhen,P. R. China518057Tel: (86) 755 26771900Fax: (86) 755 26770801URL: http://ensupport.zte.com.cnE-mail: [email protected]
LEGAL INFORMATION
Copyright © 2006 ZTE CORPORATION.
The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution ofthis document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPO-RATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations.
All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATIONor of their respective owners.
This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are dis-claimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-in-fringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on theinformation contained herein.
ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subjectmatter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee,the user of this document shall not acquire any license to the subject matter herein.
ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice.
Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information.
The ultimate right to interpret this product resides in ZTE CORPORATION.
Revision History
Revision No. Revision Date Revision Reason
1.0 31/01/2009 First version
Serial Number: sjzl20090272
Contents
Preface...............................................................i
Overview...........................................................1System Components ....................................................... 1
Application Scenarios ...................................................... 1
Features........................................................................ 1
Interfaces...................................................................... 2
Power Supply Requirements............................................. 2
System Hardware..............................................5Overview....................................................................... 5
Shelf............................................................................. 6
SCCB Card..................................................................... 7
Subcards......................................................................11
ASTEB Card ..................................................................13
ASTDE Card..................................................................14
VSTDC Card..................................................................15
SSTEB Card ..................................................................16
ATLC/ATLA Card ............................................................17
Power Cards .................................................................18
Backplane ....................................................................19
Fan Box........................................................................19
Figures ............................................................21
Tables .............................................................23
List of Glossary................................................25
Preface
Purpose This manual provides ZXDSL 9806H (V2.0) ZTE Broadband Uni-versal Access System hardware description.
IntendedAudience
This manual is intended for engineers and technicians who performinstallation and operation activities on the ZXDSL 9806H (V2.0)ZTE Broadband Universal Access System.
Prerequisite Skilland Knowledge
To use this document effectively, users should have a basic conceptof xDSL technologies, telecommunications technology, and AccessNetwork.
What Is in ThisManual
This manual contains the following chapters:
Chapter Summary
Chapter 1, Overview Introduces the systemcomponents, applicable scenarios,features, interfaces and powersupply requirements.
Chapter 2, System Hardware Describes the system hardwaresuch as shelf, cards, backplaneand fan box.
RelatedDocumentation
The following documentation is related to this manual:
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemDocumentation Guide
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemFeature Description Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemProduct Description Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemExpansion Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemCutover Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemTroubleshooting Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemAlarms Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemRoutine Maintenance Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemVersion Update Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemNetwork Management User Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemConfiguration Manual (CLI)
Confidential and Proprietary Information of ZTE CORPORATION i
ZXDSL 9806H Hardware Description Manual
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemConfiguration Manual (NetNumen)
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemCommand Manual (Volume I)
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemCommand Manual (Volume II)
� ZXDSL 9806H (V2.0) ZTE Broadband Universal Access SystemCommand Manual (Volume III)
How to Get inTouch
The following sections provide information on how to obtain sup-port for the documentation and the software.
If you have problems, questions, comments, or sugges-tions regarding your product, contact us by e-mail at [email protected]. You can also call our customer support centerat (86) 755 26771900 and (86) 800-9830-9830.
ZTE welcomes your comments and suggestions on the quality andusefulness of this document. For further questions, comments, orsuggestions on the documentation, you can contact us by e-mailat [email protected]; or you can fax your comments and sugges-tions to (86) 755 26772236. You can also browse our websiteat http://support.zte.com.cn, which contains various interestingsubjects like documentation, knowledge base, forum and servicerequest.
Declaration ofRoHS Compliance
To minimize the environmental impact and take more responsi-bility to the earth we live, this document shall serve as formaldeclaration that manufactured by ZTE CORPORATION is in com-pliance with the Directive 2002/95/EC of the European Parliament- RoHS (Restriction of Hazardous Substances) with respect to thefollowing substances:
� Lead (Pb)
� Mercury (Hg)
� Cadmium (Cd)
� Hexavalent Chromium (Cr (VI))
� PolyBrominated Biphenyls (PBB’s)
� PolyBrominated Diphenyl Ethers (PBDE’s)
This declaration is issued based on our current level of knowledge.Since conditions of use are outside our control, ZTE CORPORATIONmakes no warranties, express or implied, and assumes no liability inconnection with the use of this information.
ii Confidential and Proprietary Information of ZTE CORPORATION
C h a p t e r 1
Overview
Table of ContentsSystem Components ........................................................... 1Application Scenarios .......................................................... 1Features............................................................................ 1Interfaces.......................................................................... 2Power Supply Requirements................................................. 2
System ComponentsZXDSL 9806H is a broadband and narrowband integrated compactaccess equipment.
ZXDSL 9806H system structure consists of the following parts:
Part Name Number
Backplane 1
Power card 1
Master control card 1
User card 4 (maximum)
Fan box 1
Application ScenariosZXDSL 9806H is an integrated compact access equipment. It isdesigned for small number of users.
FeaturesTable 1 lists ZXDSL 9806H features.
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ZXDSL 9806H Hardware Description Manual
TABLE 1 ZXDSL 9806H FEATURES
Feature Number
ADSL/ADSL2+ users 96/64
VDSL2 users 64
Uplink port 2 gigabit fiber/electric ports, 2megabit Ethernet electric/fiberport, 1 EPON/GPON ONU port
VoIP sources Supports 128 routes VoIPresources
Total narrowband VoIP users 192
ZXDSL 9806H adopts front panel access. It supports cards (bothmaster control card and user cards) hot swapping. Its power sup-ply can be AC or DC.
InterfacesZXDSL 9806H consists of the following interfaces:
Type Interface Name Number
MGT 1
Console 1
Management
Monitor 1
Gigabit Fiber/ElectricPort
2
Megabit EthernetFiber/Electric Port
2
Uplink/Cascade Port
EPON/GPON Port 1
ADSL Card User interface percard
24/16 in total
VDSL Card User interface percard
16
Narrowband User interface percard
48 (ATLC)
24 (ATLA
Power Supply RequirementsZXDSL 9806H power supply requirements are as follows:
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Chapter 1 Overview
� DC: -48 V (-38.4 V – 60 V)
� AC: 110/220 V (85 V – 264 V)
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C h a p t e r 2
System Hardware
Table of ContentsOverview........................................................................... 5Shelf................................................................................. 6SCCB Card ........................................................................ 7Subcards..........................................................................11ASTEB Card ......................................................................13ASTDE Card......................................................................14VSTDC Card......................................................................15SSTEB Card ......................................................................16ATLC/ATLA Card ................................................................17Power Cards .....................................................................18Backplane ........................................................................19Fan Box............................................................................19
OverviewZXDSL 9806H is composed of cards, backplane and fan template.
Table 2 lists all ZXDSL 9806H cards.
TABLE 2 ZXDSL 9806H CARDS
Name Function Interface
SCCB System control andswitch card
One MGT, one consoleand one monitorinterface
VOPCB VoIP subcard, voicecoding and decoding,packet wrapping andunwrapping and 128route VoIP supply
None
FEUA Uplink subcard Two Megabit electricinterfaces
FEUB Uplink subcard One Megabit electricinterface and oneMegabit fiber interface
FEUC Uplink subcard Two Megabit fiberinterfaces
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ZXDSL 9806H Hardware Description Manual
Name Function Interface
GFUA Uplink subcard Two Gigabit electricinterfaces
GFUB Uplink subcard One Gigabit electricinterface and oneGigabit fiber interface
GFUC Uplink subcard Two Gigabit fiberinterfaces
EPNA Uplink subcard One EPON interface
GPNB Uplink subcard One GPON interface
ASTEB ADSL user access withinside distributor
24 route PSTN and 24route ADSL socket
ASTDE ADSL user access withbuild-in distributor
16 route PSTN andADSL socket
VSTDC VDSL user access withbuild-in distributor
16 route PSTN andADSL socket
SSTEB SHDSL user accesswith build-indistributor
24 route SHDSLsocket
ATLC/ALTA Narrowband VoIPaccess
48/24 narrowbanduser interface
PWDH -48 V DC powersupply
3 core power socket
PWDA 220 V/100 V AC powersupply
3 core power socket
ShelfThis topic covers ZXDSL 9806H shelf structure, configuration andpower consumption.
Structure Figure 1 shows shelf structure.
FIGURE 1 SHELF STRUCTURE
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Chapter 2 System Hardware
Dimensions: 88.1 mm x 482.6 mm x 240 mm Height x Width xDepth
Full Configuration In full configuration, the shelf can hold one backplane, one powercard, one SCCB card, four user cards and one fan box. Figure 2shows shelf full configuration.
FIGURE 2 FULL SHELF CONFIGURATION
MinimumConfiguration
One backplane, one power card, one SCCB card and one fan box.
PowerConsumption
ADSL full configuration power consumption: 135 W
VDSL full configuration power consumption: 121 W
SCCB CardFunctions The following are the SCCB card functions:
� User card configuration, management and control
� 4 × 24 route ADSL/ADSL2+ and 4 × 16 VDSL2 route integra-tion
� Using backplane interfaces to execute Ethernet switch card ser-vice access and data exchange between uplink port and cas-cade port on main control card
� Route chips control and management
� Provides two GE/FE electric/fiber interfaces, one GE/FE elec-tric/fiber interface or one GPON/EPON interface with uplinksubcard
� Provides voice service with VoIP subcard
� Two interfaces: MGT interface and Monitor interface
Structure Figure 3 shows SCCB card hardware structure.
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ZXDSL 9806H Hardware Description Manual
FIGURE 3 SCCB CARD STRUCTURE
Panels SCCB card panels can adopt eight interface configurations depend-ing on different uplink subcard types. Figure 4, Figure 5, Figure6, Figure 7, Figure 8, Figure 9, Figure 10 and Figure 11 show thecard interface configuration.
FIGURE 4 SCCB CARD PANEL - TYPE 1
FIGURE 5 SCCB CARD PANEL - TYPE 2
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FIGURE 6 SCCB CARD PANEL - TYPE 3
FIGURE 7 SCCB CARD PANEL - TYPE 4
FIGURE 8 SCCB CARD PANEL - TYPE 5
FIGURE 9 SCCB CARD PANEL - TYPE 6
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ZXDSL 9806H Hardware Description Manual
FIGURE 10 SCCB CARD PANEL - TYPE 7
FIGURE 11 SCCB CARD PANEL - TYPE 7
Besides uplink interfaces, SCCB card contains three managementinterfaces:
� One MGT for out-of-band management and equipment adjust-ment
� One Console for local super terminal management
� One Monitor for switches input signal
Indicators Table 3 lists SCCB card indicators.
TABLE 3 SCCB CARD INDICATORS
Indicator Color Status Description
RUN Green ON The deviceis runningnormally.
ON Power ONPWR Green
OFF Power OFF
ON Optical link ONL1, L2 Green
OFF Optical link OFF
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Chapter 2 System Hardware
Indicator Color Status Description
ON Link ONGreen
OFF Link OFF
ON Data flowoccurs
OFF No data flowoccurs
LAN indicators
Yellow
Flashing Data flowoccurs
Features Table 4 lists SCCB card features.
TABLE 4 SCCB CARD FEATURES
Items Features
Dimensions 44 mm x 120 mm x 225 mm(Height x Width x Depth)
Maximum user number 96 ADSL/ADSL2+ or 64 VDSL or192 POTS users
Power Consumption 7.49 W
Hot Swapping Yes
SubcardsSubcards include VoIP subcard and uplink subcards.
� Uplink subcards provide uplink service for subscribers withmegabit/gigabit optical/electrical interfaces and GPON/EPONinterfaces.
� VoIP subcard provides VoIP function with 128 VoIP sources.
Panels � FEUA/FEUB/FEUC subcards use the same PCB while adopt dif-ferent interface modules. The panel is shown in Figure 12.
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ZXDSL 9806H Hardware Description Manual
FIGURE 12 FEUA/FEUB/FEUC SUBCARD PANEL
� GFUA/GFUB/GFUC subcards use the same PCB while adopt dif-ferent interface modules. The panel is shown in Figure 13.
FIGURE 13 GFUA/GFUB/GFUC SUBCARD PANEL
� EPNA subcard contains an EPON interface. Subcard linksthrough GMII to control exchange card and executes systemuplink function.
� GPNB subcard contains a GPON interface. Subcard linksthrough GMII to control exchange card and executes systemuplink function.
� VOPCB subcard contains no interface and works by beingplugged-in SCCB card. It functions include voice coding anddecoding, packet wrapping and unwrapping and 128 routeVoIP supply.
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Chapter 2 System Hardware
Subcard PowerConsumption
Table 5 lists the subcard power consumption.
TABLE 5 SUBCARD POWER CONSUMPTION
Subcard Power Consumption
GFUA/GFUB/GFUC 3 W
FEUA/FEUB/FEUC 1 W
EPNA 5 W
GPNB 11 W
ASTEB CardASTEB card realizes ADSL/ADSL2+ service access by executingmessage exchange from ATM to IP. Its maximum transmissionlength is 6.5 Km, upstream rate is 24 Mbps and downstream rateis 1 Mbps.
Structure Figure 14 shows ASTEB card structure.
FIGURE 14 ASTEB STRUCTURE
Panel Figure 15 shows ASTEB card panel.
FIGURE 15 ASTEB CARD PANEL
There are two sockets on ASTEB card.
� Socket with interface name ’USER’.
� Socket with interface name ’PSTN’ for VoIP message transmis-sion.
Features Table 6 lists ASTEB card features.
TABLE 6 ASTEB CARD FEATURES
Items Features
Dimensions 22 mm x 280 mm x 225 mm(Height x Width x Depth)
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ZXDSL 9806H Hardware Description Manual
Items Features
For the biggest frame: < 10 msecIP frame transmission delay
For the smallest frame: <1 msec
IP frame transmission losing rate <10-7
IP frame transmission error rate <10-6
Power Consumption 28 W
Hot Swapping Yes
ASTDE CardASTDE card realizes ADSL/ADSL2+ service access by executingmessage exchange from ATM to IP. Its maximum transmissionlength is 6.5 Km, upstream rate is 24 Mbps and downstream rateis 1 Mbps.
ASTDE card works in compliance with ETSI TS101-952-1-1 stan-dards.
Structure Figure 16 shows ASTDE card structure.
FIGURE 16 ASTDE STRUCTURE
Panel Figure 17 shows ASTDE card panel.
FIGURE 17 ASTDE CARD PANEL
There are 2 sockets in ASTDE card.
� Socket with interface name ’USER’.
� Socket with interface name ’PSTN’ for VoIP message transmis-sion.
Features Table 7 lists ASTDE card features.
TABLE 7 ASTDE CARD FEATURES
Items Features
Dimensions 22 mm x 280 mm x 225 mm(Height x Width x Depth)
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Items Features
For the biggest frame: < 10 msecIP frame transmission delay
For the smallest frame: < 1 msec
IP frame transmission losing rate <10-7
IP frame transmission error rate <10-6
Power Consumption 24 W
Hot Swapping Yes
VSTDC CardVSTDC card realizes VDSL2 service access by executing messageexchange from ATM to IP. Its maximum transmission length is 2.5Km, upstream rate is 85 Mbps and downstream rate is 50 Mbps.
Structure Figure 18 shows VSTDC card structure.
FIGURE 18 VSTDC CARD STRUCTURE
Panel Figure 19 shows VSTDC card panel.
FIGURE 19 VSTDC CARD PANEL
There are two sockets on VSTDC card.
� Socket with interface name ’USER’.
� Socket with interface name ’PSTN’ for VoIP message transmis-sion.
Features Table 8 lists VSTDC card features.
TABLE 8 VSTDC CARD FEATURES
Items Features
Dimensions 22 mm x 280 mm x 225 mm(Height x Width x Depth)
For the biggest frame: < 10 msecIP frame transmission delay
For the smallest frame: <1 msec
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ZXDSL 9806H Hardware Description Manual
Items Features
IP frame transmission losing rate <10-7
IP frame transmission error rate <10-6
Power Consumption 36 W
Hot Swapping Yes
SSTEB CardSSTEB card provides 24 routes SHDSL service access. Its maxi-mum transmission length is 6 Km, symmetric upstream and down-stream rate ranging from 192 kbps to 2312 kbps.
Structure Figure 20 shows SSTEB card structure.
FIGURE 20 SSTEB CARD STRUCTURE
Panel Figure 21 shows SSTEB card panel.
FIGURE 21 SSTEB CARD PANEL
There is one socket on SSTEB card.
� Socket with interface name ’USER’.
Features Table 9 lists SSTEB card features.
TABLE 9 SSTEB CARD FEATURES
Items Features
Dimensions 22 mm x 280 mm x 225 mm(Height x Width x Depth)
For the biggest frame: < 10 msecIP frame transmission delay
For the smallest frame: <1 msec
IP frame transmission losing rate <10-7
IP frame transmission error rate <10-6
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Items Features
Power Consumption 35 W
Hot Swapping Yes
ATLC/ATLA CardATLC card has a 48 route narrowband voice interface and can re-alize 48 route POTS users access. ATLA card has a 24 narrowbandvoice interface and can realize 24 route POTS users access. Bothcards can offer ringing tone and cable test functions.
� ATLC card has a 48 route narrowband voice interface and canrealize 48 route POTS user access.
� ATLA card has a 24 narrowband voice interface and can realize24 route POTS user access.
� Both cards can offer belling stream and cable test functions.
Structure Figure 22 shows ATLC/ATLA card structure.
FIGURE 22 ATLC/ATLA STRUCTURE
Panel Figure 23 shows ATLC card panel.
FIGURE 23 ATLC CARD PANEL
Figure 24 shows ATLA card panel.
FIGURE 24 ATLA CARD PANEL
Interfaces � Two PSTN sockets with interface names ’PSTN1’ and ’PSTN2’on ATLC card.
� One PSTN socket with interface name ’USER’ on ATLA card.
Indicators Table 10 lists ATLC/ATLA card indicators.
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ZXDSL 9806H Hardware Description Manual
TABLE 10 ATLC/ATLA CARD INDICATORS
Indicator Color Status Description
RUN Green ON The deviceis runningnormally.
ALM Red ON The device orits softwareis runningabnormally.
HOOK Green ON One or moreusers hook-on.
Features Table 11 lists ATLC/ATLA card features.
TABLE 11 ATLC/ATLA CARD FEATURES
Items Features
Dimensions 22 mm x 280 mm x 225 mm(Height x Width x Depth)
ATLC: 46.88 WPower Consumption
ATLA: 23.84 W
Hot Swapping Yes
Power CardsPWDH adopts – 48 V DC input current and – 38.4 VDC – 60 VDCinput voltage. Its output is 3.3 V DC-DC or – 48 VDC.
PWAH adopts 110 V- 220 V AC input and its voltage ranges from85 VAC to 264 VAC. Its output is 3.3 V or – 48 VDC.
Panel Figure 25 shows PWDH card panel.
FIGURE 25 PWDH CARD PANEL
Figure 26 shows PWAH card panel.
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FIGURE 26 PWAH CARD PANEL
Indicators Table 12 lists PWDH/PWAH card indicators.
TABLE 12 PWDH/PWAH CARD INDICATORS
Indicator Color Status Description
Green ON The deviceis runningnormally.
RUN
Red ON Alarm
Features Table 13 lists PWDH/ PWAH card features.
TABLE 13 PWDH/PWAH CARD FEATURES
Items Features
Dimensions 22 mm x 280 mm x 225 mm(Height x Width x Depth)
PWDH: 20 WPower Consumption
PWAH: 12.5 W
BackplaneInterface The following lists backplane build-in interfaces:
� SCCB and user cards interfaces
� Power card interface: - 48 V GND, 3.3 V GND
� Fan socket: - 48 V, - 48 V GND, fan tester and control
Features Dimensions: 320 mm x 84 mm (Height x Width)
Fan BoxFeatures Fan box is fitted on the left side of shelf and it acts as an exhaust
for the inside hot air. There is a fan control card built inside to testand control its operation. Fan unit can be hot swapped.
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ZXDSL 9806H Hardware Description Manual
PowerConsumption
11 W
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Figures
Figure 1 Shelf Structure ...................................................... 6
Figure 2 Full Shelf Configuration ........................................... 7
Figure 3 SCCB Card Structure .............................................. 8
Figure 4 SCCB Card Panel - Type 1........................................ 8
Figure 5 SCCB Card Panel - Type 2........................................ 8
Figure 6 SCCB Card Panel - Type 3........................................ 9
Figure 7 SCCB Card Panel - Type 4........................................ 9
Figure 8 SCCB Card Panel - Type 5........................................ 9
Figure 9 SCCB Card Panel - Type 6........................................ 9
Figure 10 SCCB Card Panel - Type 7.....................................10
Figure 11 SCCB Card Panel - Type 7.....................................10
Figure 12 FEUA/FEUB/FEUC Subcard Panel............................12
Figure 13 GFUA/GFUB/GFUC Subcard Panel...........................12
Figure 14 ASTEB Structure..................................................13
Figure 15 ASTEB Card Panel................................................13
Figure 16 ASTDE Structure .................................................14
Figure 17 ASTDE Card Panel ...............................................14
Figure 18 VSTDC Card Structure..........................................15
Figure 19 VSTDC Card Panel ...............................................15
Figure 20 SSTEB Card Structure ..........................................16
Figure 21 SSTEB Card Panel................................................16
Figure 22 ATLC/ATLA Structure............................................17
Figure 23 ATLC Card Panel ..................................................17
Figure 24 ATLA Card Panel ..................................................17
Figure 25 PWDH Card Panel ................................................18
Figure 26 PWAH Card Panel ................................................19
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Tables
Table 1 ZXDSL 9806H Features............................................. 2
Table 2 ZXDSL 9806H Cards................................................. 5
Table 3 SCCB Card Indicators ..............................................10
Table 4 SCCB Card Features................................................11
Table 5 Subcard Power Consumption ....................................13
Table 6 ASTEB CARD FEATURES...........................................13
Table 7 ASTDE Card Features ..............................................14
Table 8 VSTDC Card Features ..............................................15
Table 9 SSTEB Card Features ..............................................16
Table 10 ATLC/ATLA Card Indicators .....................................18
Table 11 ATLC/ATLA Card Features.......................................18
Table 12 PWDH/PWAH Card Indicators..................................19
Table 13 PWDH/PWAH Card Features....................................19
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List of Glossary
AC - Alternating Current
ADSL - Asymmetrical Digital Subscriber Line
ATM - Asynchronous Transfer Mode
DC - Direct Current
EPON - Ethernet Passive Optical Network
GPON - Gigabit Passive Optical Network
IP - Internet Protocol
ONU - Optical Network Unit
PCB - Physical Control Block
POTS - Plain Old Telephone Service
PSTN - Public Switched Telephone Network
SHDSL - Single-pair High Digital Subscriber Line
VDSL - Very High Speed Digital Subscriber Line
VDSL2 - Very High Bit Rate Digital Subscriber Line 2
VoIP - Voice over Internet Protocol
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