zxdsl 9836 product description - zte at versatek...

ZXDSL 9836 ProductDescription

ZXDSL 9836 Product Description

ZTE Confidential & Proprietary1


Version Date Author Reviewer Notes

V1.0.0 2011/1/19Zongming

Lee

Fixed Network

Production

Department

First release

V1.0.1 2011/8/24Zongming

Lee

Fixed Network

Production

Department

Errata of uplink sub-card;

Erase SSTDF from system

V1.1.0 2012/1/6Zongming

Lee

Fixed Network

Production

Department

Latest ADSL2+/VDSL2/SHDSL/COMBO line

cards and some new features

V1.1.1 2012/5/25Yang

Guoliang

Fixed Network

Production

Department

Update the power

V2.0.0 2012/11/6Yang

Guoliang

Fixed Network

Production

Department

Latest line cards and some new features

V2.1.0 2013/8/29Yang

Guoliang

Fixed Network

Production

Department

V2.1.1 2013/11/7Yang

Guoliang

Fixed Network

Production

Department

Cabinets ,VDSL2 and VDSL2 COMBO cards

V2.1.2 2014/7/2 ZhouYaqiang

Fixed Network

Production

Department

Lightning protection feature

© 2015 ZTE Corporation. All rights reserved.

ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used

without the prior written permission of ZTE.

Due to update and improvement of ZTE products and technologies, information in this document is subjected to

change without notice.


2ZTE Confidential & Proprietary

TABLE OF CONTENTS

1 Overview............................................................................................................................8

2 Features.............................................................................................................................92.1 Advanced System Architecture....................................................................................... 92.2 Innovative techniques..................................................................................................... 102.3 Green Environment Protection Design.........................................................................102.4 High Reliability................................................................................................................. 112.5 Convenient Installation and Fast Deployment............................................................ 112.6 High Maintainability and Touch-Free O&M................................................................. 122.7 Multiple Types of Application Environment................................................................. 122.8 Cost Effectiveness and Investment Protection........................................................... 13

3 System Architecture.................................................................................................... 153.1 Product Appearance....................................................................................................... 153.2 Hardware Architecture.................................................................................................... 163.2.1 Hardware Architecture Diagram.................................................................................... 163.2.2 Cards................................................................................................................................. 173.3 Cabinet..............................................................................................................................453.3.1 OUT50ET..........................................................................................................................453.3.2 EC50EC-S........................................................................................................................ 463.4 Software Architecture......................................................................................................463.4.1 NM Sub-system............................................................................................................... 473.4.2 Broadband Sub-system.................................................................................................. 473.4.3 Narrowband Sub-system................................................................................................473.4.4 Bearer Sub-system..........................................................................................................473.4.5 Operation Support Sub-system.....................................................................................47

4 Functions........................................................................................................................ 484.1 DSL Specification............................................................................................................ 484.1.1 ADSL2/2+..........................................................................................................................484.1.2 VDSL2............................................................................................................................... 504.1.3 SHDSL...............................................................................................................................544.1.4 Interworking Function (IWF)...........................................................................................554.1.5 Vectoring (G.VECTOR / DSM L3).................................................................................564.2 GPON................................................................................................................................ 584.2.1 Standards Followed.........................................................................................................584.2.2 Bandwidth Allocation.......................................................................................................594.2.3 GEM Adaptation...............................................................................................................594.2.4 T-CONT.............................................................................................................................59



4.2.5 Operation and Maintenance...........................................................................................594.2.6 Optical Linkage Measurement and Diagnosis............................................................ 604.2.7 Fiber Protection Alternation............................................................................................604.3 EPON.................................................................................................................................604.3.1 Standards Followed.........................................................................................................604.3.2 System Registration and Authentication...................................................................... 614.3.3 Logical Link Identification (LLID)...................................................................................624.3.4 Operation Administration and Maintenance (OAM)................................................... 624.3.5 Dynamic Bandwidth allocation (DBA)...........................................................................624.3.6 Fiber Protection Alternation............................................................................................624.3.7 Optical Linkage Measurement and Diagnosis............................................................ 634.4 10GEPON.........................................................................................................................634.4.1 Standards Followed.........................................................................................................634.4.2 System Registration and Authentication...................................................................... 644.4.3 Logical Link Identification (LLID)...................................................................................654.4.4 Operation Administration and Maintenance (OAM)................................................... 654.4.5 Dynamic Bandwidth allocation (DBA)...........................................................................654.4.6 Fiber Protection Alternation............................................................................................664.4.7 Optical Linkage Measurement and Diagnosis............................................................ 664.5 L2 Functions.....................................................................................................................664.5.1 L2 BRIDGE Functions.....................................................................................................664.5.2 VLAN Functions...............................................................................................................694.5.3 Ethernet OAM Functions................................................................................................ 724.6 QoS....................................................................................................................................754.6.1 Service Stream Classification and Identification........................................................ 754.6.2 Congestion Management............................................................................................... 754.6.3 Traffic Analysis and Integer............................................................................................764.7 Multicast Functions..........................................................................................................764.7.1 IGMP..................................................................................................................................764.7.2 Multicast Control.............................................................................................................. 774.8 VoIP................................................................................................................................... 804.8.1 Voice processing protocol and encoding..................................................................... 804.8.2 Voice management module........................................................................................... 824.8.3 Other services.................................................................................................................. 834.8.4 Line Test (112)..................................................................................................................854.8.5 Voice Quality Guarantee.................................................................................................854.9 IPv6 Function................................................................................................................... 864.9.1 IPv6 Transparent Transmission.................................................................................... 864.9.2 IPv6 Stateless Address Auto Configuration (SLAAC) Port Positioning.................. 864.9.3 IPv6 DHCPv6 Port Positioning...................................................................................... 864.9.4 IPv6 Source Guard..........................................................................................................874.9.5 IPv6 Multicast...................................................................................................................88



4.9.6 MLD Proxy........................................................................................................................ 894.9.7 IPv6 Management........................................................................................................... 904.10 Security............................................................................................................................. 904.10.1 xPON Interface Data Security....................................................................................... 904.10.2 Port Location.................................................................................................................... 904.10.3 Traffic Restraint................................................................................................................914.10.4 MAC Filter.........................................................................................................................924.10.5 IP Filtering.........................................................................................................................934.10.6 ACL.................................................................................................................................... 944.10.7 Interface Security.............................................................................................................954.10.8 802.1x................................................................................................................................954.11 Network Management.....................................................................................................964.11.1 Management modes....................................................................................................... 964.11.2 Fault Management...........................................................................................................974.11.3 Performance Management.............................................................................................984.11.4 Security Management.....................................................................................................984.11.5 Modem Remote Management.......................................................................................994.12 Environment Detection................................................................................................. 100

5 Application Mode........................................................................................................1025.1 Network Architecture.....................................................................................................1025.1.1 P2MP Network............................................................................................................... 1025.1.2 P2P Network.................................................................................................................. 1035.2 Service Type.................................................................................................................. 1055.2.1 Broadband data Service and Network....................................................................... 1055.2.2 VoIP Service and Network........................................................................................... 1065.2.3 Video Service and Network......................................................................................... 1075.2.4 DDN Service and Network...........................................................................................1075.2.5 Triple-play Service and Network................................................................................. 108

6 Technical Specifications.......................................................................................... 1106.1 Equipment Specifications and Environment Indices................................................1106.2 Interface Indices and Parameters...............................................................................1116.3 Key Technical Specifications.......................................................................................1176.4 Indicators........................................................................................................................ 118

7 Glossary........................................................................................................................121

8 Standard Compliance................................................................................................126



FIGURES

Figure 3- 1 ZXDSL 9836 Appearance (Front view)..................................................................... 15

Figure 3- 2 ZXDSL 9836 Appearance (Front view)-with Vectoring...........................................15

Figure 3- 3 ZXDSL 9836 Appearance (Side view)...................................................................... 16

Figure 3- 4 ZXDSL 9836 Appearance (Side view) -with Vectoring...........................................16

Figure 3- 5 ZXDSL 9836 System Module Layout........................................................................ 16

Figure 3- 6 ZXDSL 9836 System Architecture............................................................................. 17

Figure 3- 7 ZXDSL 9836 SCMF Panel.......................................................................................... 25

Figure 3- 8 ZXDSL 9836 SCMF Hardware Architecture.............................................................25

Figure 3- 9 ZXDSL 9836 CTMV Panel.......................................................................................... 28

Figure 3- 10 ZXDSL 9836 CTMV Hardware Architecture.......................................................... 28

Figure 3- 11 ZXDSL 9836 SVCE Panel........................................................................................ 29

Figure 3- 12 ZXDSL 9836 ADSL2/2+ Panel.................................................................................30

Figure 3- 13 ZXDSL 9836 ADSL2/2+ Card Hardware Architecture..........................................31

Figure 3- 14 ZXDSL 9836 VDSL2 Card Panel.............................................................................33

Figure 3- 15 ZXDSL 9836 VDSL2 Card Hardware Architecture............................................... 33

Figure 3- 16 ZXDSL 9836 SSTDF Card Panel............................................................................ 35

Figure 3- 17 ZXDSL 9836 SHDSL Card Hardware Architecture...............................................35

Figure 3- 18 ZXDSL 9836 COMBO Panel.................................................................................... 37

Figure 3- 19 ZXDSL 9836 COMBO Card Hardware Architecture.............................................37

Figure 3- 20 ZXDSL 9836 POTS Card Panel...............................................................................39

Figure 3- 21 ZXDSL 9836 POTS Card Hardware Architecture................................................. 39

Figure 3- 22 ZXDSL 9836 ETCD Panel........................................................................................ 40

Figure 3- 23 ZXDSL 9836 ETCF Panel.........................................................................................40

Figure 3- 24 ZXDSL 9836 Ethernet Card Hardware Architecture.............................................40

Figure 3- 25 ZXDSL 9836 AC Power Card Panel........................................................................42

Figure 3- 26 ZXDSL 9836 DC Power Card Panel....................................................................... 42

Figure 3- 27 ZXDSL 9836 Fan Unit Panel.................................................................................... 44

Figure 3- 28 ZXDSL 9836 fan unit and main control card relationship.................................... 44



Figure 3- 29 ZXDSL 9836 Software Architecture........................................................................ 46

Figure 4- 1 Schematic Diagram of ATM-Ethernet IWF............................................................... 55

Figure 4- 2 ZXDSL 9836 Fiber Protection (GPON)..................................................................... 60

Figure 4- 3 ZXDSL 9836 Fiber Protection (EPON)......................................................................63

Figure 4- 4 ZXDSL 9836 Fiber Protection (10GEPON)..............................................................66

Figure 4- 5 Ethernet OAM Architecture......................................................................................... 73

Figure 4- 6 IEEE 802.1ag Architecture..........................................................................................74

Figure 4- 7 Schematic Diagram of ZXDSL 9836 IPv6 Multicast................................................88

Figure 5- 1 ZXDSL 9836 Application in P2MP Network (FTTC/Cab).....................................103

Figure 5- 2 ZXDSL 9836 Application in P2P Network.............................................................. 104

Figure 5- 3 ZXDSL 9836 Data Service Application................................................................... 105

Figure 5- 4 ZXDSL 9836 VoIP Service Application...................................................................106

Figure 5- 5 ZXDSL 9836 IPTV Service Application...................................................................107

Figure 5- 6 ZXDSL 9836 DDN Service Application...................................................................108

Figure 5- 7 ZXDSL 9836 Triple-play Application....................................................................... 109

TABLES

Table 3- 1 Cards Specifications......................................................................................................18

Table 3- 2 Uplink Sub-card Description.........................................................................................26

Table 3- 3 SCMF Key Features......................................................................................................27

Table 3- 4 CTMV Features..............................................................................................................28

Table 3- 5 SVCE Features.............................................................................................................. 29

Table 3- 6 ADSL2/2+ Cards............................................................................................................ 30

Table 3- 7 ADSL2/2+ Card Features............................................................................................. 31

Table 3- 8 VDSL2 Cards..................................................................................................................32

Table 3- 9 VDSL2 Card Features...................................................................................................34

Table 3- 10 SHDSL Cards...............................................................................................................34



Table 3- 11 SHDSL Card Features................................................................................................35

Table 3- 12 COMBO Card............................................................................................................... 36

Table 3- 13 COMBO Card Features.............................................................................................. 37

Table 3- 14 POTS Cards................................................................................................................. 38

Table 3- 15 POTS Card Features.................................................................................................. 39

Table 3- 16 Ethernet Card Features.............................................................................................. 41

Table 3- 17 Power Card Features..................................................................................................43

Table 3- 18 Fan Unit Features........................................................................................................44

Table 6- 1 ZXDSL 9836 Specifications....................................................................................... 110

Table 6- 2 ZXDSL 9836 Environment Indices............................................................................111

Table 6- 3 ZXDSL 9836 ADSL2/2+ Interfaces...........................................................................111

Table 6- 4 ZXDSL 9836 VDSL2 Interfaces.................................................................................112

Table 6- 5 ZXDSL 9836 SHDSL Interfaces................................................................................112

Table 6- 6 ZXDSL 9836 POTS Interfaces.................................................................................. 112

Table 6- 7 ZXDSL 9836 Ethernet Megabit Interface (SNI and UNI).......................................113

Table 6- 8 ZXDSL 9836 Ethernet Gigabit Interface (SNI and UNI)........................................ 114

Table 6- 9 ZXDSL 9836 GPON Optical Interfaces....................................................................114

Table 6- 10 ZXDSL 9836 EPON Optical Interfaces.................................................................. 115

Table 6- 11 ZXDSL 9836 10GEPON Interfaces........................................................................ 116

Table 6- 12 ZXDSL 9836 Key Technical Specifications...........................................................117

Table 6- 13 ZXDSL 9836 Indicators............................................................................................ 118

Table 7- 1 Glossary........................................................................................................................ 121

Table 8- 1 Standard Compliance..................................................................................................126



1 OverviewIn a new wave of bandwidth acceleration campaign, Telcos increasingly keep their eye

on FTTx solution with high bandwidth while no extra investment. Medium or small size

all-service MDU with capacity of 200L or so is a good combination of cost and bandwidth,

offering one-stop services including VoIP, HSI, IPTV as well as legacy DDN.

The ZXDSL 9836, a 3U-height box, is medium/small size MDU customized for various

FTTx scenarios, providing up to 192L for broadband, 384L for narrowband, with the aim

of cutting TCO tremendously while raising bandwidth. Highest integration and density

just in 3U-height box, provides up to 192L ADSL2/2+, 192L VDSL2, 96L SHDSL.bis,

384L POTS, 192L COMBO (ADSL2/2+ or VDSL2 and POTS) and 96L FE. Various uplink

interfaces including GE, EPON, GPON and even 10G EPON, support diverse uplink

protection mechanisms and various topologies like P2P, P2MP, ring, star and chain to

meet operators’ different requirements.

The ZXDSL 9836 is designed on the basis of IP technology. It adopts the same

architecture, hardware and software platform as the ZXDSL 9806H series, backward

compatible with the ZXDSL 9806H in terms of all line cards to cut the cost of logistics,

warehousing and maintenance. Compact 3U-height design, fits FTTC/B application

scenarios, easy to be installed in various integrated closure and outdoor cabinet, meets

operator requirements for fast time-to-delivery, flexible and economical deployment.

The ZXDSL 9836 (3U), with the ZXDSL 9806H (2U) and the ZXDSL 9816 (1U) together,

cover all FTTx scenarios from 16, 24, 48, 96 to 128, 192, 256 and 384 lines of narrow,

broadband or hybrid narrowband and broadband access, meet network developing trend,

which features increasing flatter network, less node while larger node capacity.



2 FeaturesThe ZXDSL 9836 is the world’s first system-level VDSL2 vectoring equipment,

exhibited as prototype in BBWF as early as in October, 2010.

In BBWF, 2011, the ZXDSL 9836 was shortlisted for two InfoVision awards:

“Broadband Innovation of the Year” and “Broadband Access Network Technologies

and Services-Fixed” for its’ innovative VDSL2 vectoring solution.

On September 19, at the 13th edition of the annual ICCC (International Common

Criteria Conference) held in Paris, France, the ZXDSL 9836 was issued by

Norway’s National Certification Authority a “CC Certificate for ZTE’s Access

System”.

2.1 Advanced System Architecture

The ZXDSL 9836 has advanced system architecture with the following features:

It applies integration theory in design with proper chip layout thus reducing the

difficulties in production and process while increasing system stability.

Its system architecture has powerful scalability which ensures meeting the

increasing requirements for future bandwidth and services.

It adopts 3U-height plug-in card design which features high integration and flexibility，

thus gaining leading position in capacity and performance.

Excellent performance enables VDSL2 and FE symmetric 100 Mbps bandwidth.

It is able to provide carrier-class operation and management, and multi-service

integration and multi-access methods.

It is a multi-service integrated platform which effectively decreases networking

nodes and layers.



2.2 Innovative techniques

ZTE has released world’s first system-level VDSL2 vectoring prototype, the ZXDSL 9836,

with following features:

The introduction of the special vectoring card allows the ZXDSL 9836 to be

smoothly upgraded and configured to support vectoring. It can support up to 192

VDSL2 lines with centralized vectoring processing, the transmitted and received

signals on every copper can be corporately processed in the central vectoring

engine.

It automatically analyzes crosstalk between copper pairs and cancels it, achieving

improved VDSL performance.

Based on system-level vectoring technology, it supports from 32L up to 192L

vectoring, covering from small-capacity FTTB (Fiber-to-the-Building) node to

large-capacity FTTC (Fiber-to-the-cabinet) node.

The introduction of vectoring technology increases the performance of copper lines,

extend the network’s reach and prolong the life cycle of copper cables.

2.3 Green Environment Protection Design

The ZXDSL 9836 features environment-friendly design as follows:

Unique system architecture and good layout design reduce system power

consumption dramatically.

It uses eco-friendly and lead-free material to protect users from being hurt.

Speed-adjustable fan based on ambient temperature make it suitable for working in

quiet environment such as offices and residential area.

Intelligent power-saving policy can prolong duration of voice services by powering

off broadband services when battery begins to work.



Highly efficient power application solution decreases system power consumption

and saves energy.

It adopts management chips and auxiliaries with advanced technique and low

power consumption to save energy.

It adopts POTS short-loop voice technology to ensure its performance and

decrease power consumption at the same time.

2.4 High Reliability

The ZXDSL 9836 has high reliability with the following features:

Strict in components selection, advanced processing technique and outstanding

thermal design enable equipment to work in various environments.

Advanced system architecture greatly saves internal interfaces thus promote

product performance and reliability.

Anti-corrosion design of cards and assemblies enables the ZXDSL 9836 to work in

various types of hard environment with extremely low fault rate.

Its outstanding heat dispersing design ensures equipment stable operation.

Supports reliable lightning protection of 6 kV for the power interface and 4 kV for the

user interface.

It has an overheat alarm mechanism to protect equipment from overheat damage.

2.5 Convenient Installation and Fast Deployment

The ZXDSL 9836 features convenient installation and fast deployment as follows:

The ZXDSL 9836 is a type of small-sized equipment which occupies small space

and is convenient for deployment.

Plug and play design ensures simple commission.



On-site deployment and batch configuration without the need of extra software

debugging.

2.6 High Maintainability and Touch-Free O&M

The ZXDSL 9836 features high maintainability and touch-free O&M as follows:

Unified remote operation and maintenance solution.

Multiple remote diagnosis and test methods: Supports broadband port loop check

and POTS internal and external line check.

OLS check: Supports fiber breakage check, optical linkage test and diagnosis,

auxiliary fiber trouble positioning and troubleshooting.

Real-time and remote environment surveillance including temperature, power and

door alarm.

Periodically key devices self-inspection: Supports intelligent reset mechanism,

providing critical fault early warning and self-recovery mechanism.

Software version rollback: Providing safer upgrading policy.

2.7 Multiple Types of Application Environment

The ZXDSL 9836 has multiple types of application environment with the following

features:

Various networking topologies, including P2P, P2MP, star, chain and ring.

Supports data, voice and video service and can work as DSLAM, MDU or AG

equipment, providing multi-play services for residential and commercial subscribers.

Supports FTTN, FTTB, FTTC and FTTCab application in PON network with

powerful scalability.



Provides multiple broadband access technologies such as ADLS2, VDSL2 and FE,

and provides flexible solutions for subscribers who are different in terms of distance

and bandwidth.

Supports indoor and outdoor installation.

Provides AC and DC power supply application and adapts to various power

environments and supports high-voltage DC input.

High temperature adaptability.

2.8 Cost Effectiveness and Investment Protection

The ZXDSL9836 features low cost and high investment conservation and return as

follows:

Backward compatibility with the ZXDSL 9806H in terms of line card, which cuts the

cost of logistics, warehousing and maintenance.

PON technology adaptation, which leads to fiber saving, decreases CAPEX

effectively.

Green environment protection technology adoption, which leads to consumption

decreasing, decreases OPEX effectively.

The ZXDSL 9836 fulfills main-stream carriers’ requirements of less equipment

dimensions and more density. Comparing with other dimension-similar products,

the ZXDSL 9836 is able to provide higher integration and wider subscriber coverage,

thus decreasing cost per line and carriers’ investment.

The ZXDSL 9836 is able to make use of the existing copper lines so to decrease

carriers’ investment and protect carriers’ previous investment.

Flexible card configuration design enables various networking modes in all kinds of

environment. It is simple and convenient for carriers to expand capacity or upgrade

access method. This effectively protects carriers’ investment.



Super scalability of system architecture is able to fulfill sustainable development

requirements of bandwidth and services. This also protects carriers’ investment.

Convenient installation design requires no special technicians thus decreases

carriers’ labor cost.



3 System Architecture

3.1 Product Appearance

Figure 3- 1, Figure 3- 2, Figure 3- 3 and Figure 3- 4 display the ZXDSL 9836 front view

and side view.

The ZXDSL 9836 is standard plug-in box with dimensions of 132.9 mm × 482.6 mm ×

240 mm (Height x Width x Depth).

Figure 3- 1 ZXDSL 9836 Appearance (Front view)

Figure 3- 2 ZXDSL 9836 Appearance (Front view)-with Vectoring



Figure 3- 3 ZXDSL 9836 Appearance (Side view)

Figure 3- 4 ZXDSL 9836 Appearance (Side view) -with Vectoring

3.2 Hardware Architecture

3.2.1 Hardware Architecture Diagram

The ZXDSL 9836 is a box type of equipment with configurable plug-in cards.

Figure 3- 5 ZXDSL 9836 System Module Layout



The ZXDSL 9836 system is composed of one plug-in box, one backplane, one fan card,

one power card, one co-process card, one vectoring co-process card, one main control

card containing uplink sub-card, and multiple types of subscriber cards including

ADSL2/2+ subscriber card, VDSL2 subscriber card, SHDSL subscriber card, Ethernet

subscriber cards, COMBO subscriber card (ADSL2/2+ and POTS) and POTS subscriber

card. Figure 3- 5 displays cards layout in the ZXDSL 9836 system.

Figure 3- 6 ZXDSL 9836 System Architecture

Figure 3- 6 depicts logical connection among the ZXDSL 9836 cards. There are multiple

mutually connected buses between main control card, co-process card and subscriber

cards. Local bus is in charge of control signals transmission and service bus is in charge

of service data transmission. Service bus includes xDSL service bus, Ethernet service

bus and narrowband service bus.

3.2.2 Cards

Table 3- 1 lists all the ZXDSL 9836 cards.



Table 3- 1 Cards Specifications

Type NameSpecification

sFunctions Interfaces

Maincontrolcard

SCMFMain controlcard

Core systemcontrol andswitch card

One localmanagementconsole/environmentdetecting console(RJ45), oneout-of-band networkmanagementinterface/cascadeinterface (RJ45), fourdry contacts (6-pinsocket)

Other interfaces areprovided by uplinksub-cards. Fordetails, see uplinksub-card interfacedescription.

Uplinksub-card

OGSDAGigabitEthernet uplinksub-card A

GigabitEthernetuplink

Two 10/100/1000Mself-adaptationEthernet electricinterfaces (RJ45),with synchronousEthernet

OGSDBGigabitEthernet uplinksub-card B

One 10/100/1000Mself-adaptationEthernet electricinterface (RJ45), one1000M Ethernetoptical interface, withsynchronousEthernet

OGSDCGigabitEthernet uplinksub-card C

Two 1000M Ethernetoptical interfaces,with synchronousEthernet





OGSDDGigabitEthernet uplinksub-card D

Two 1000M Ethernetoptical interfaces,without synchronousEthernet

OGSQCGigabitEthernet uplinksub-card C

Four 1000M Ethernetoptical interfaces,with synchronousEthernet

OGSQDGigabitEthernet uplinksub-card D

Four 1000M Ethernetoptical interfaces,without synchronousEthernet

SGGA/10Single GPONONT uplinksub-card GPON ONT

uplink

One GPON ONToptical interface

SGGA/11Dual GPONONT uplinksub-card

Two GPON ONToptical interfaces

SGGP/4

Single GPONand singleGigabitEthernet ONTuplinksub-card

One GPON ONToptical interfaces and

One 1000M Ethernetelectric interfaces

SGGP/7

Single GPONand singleGigabitEthernet ONTuplinksub-card

One GPON ONToptical interfaces and

One 1000M Ethernetoptical interfaces

SEGB/1Single EPONONT uplinksub-card EPON ONT

uplink

One EPON ONToptical interface

SEGB/4Dual EPONONT uplinksub-card

Two EPON ONToptical interfaces





SEGB/7Dual EPONONT uplinksub-card

Two EPON ONToptical interfaces withtwo MAC

SEGD/1Single EPONONT uplinksub-card

One EPON ONToptical interface

SEGD/4Dual EPONONT uplinksub-card

Two EPON ONToptical interfaces

SEGD/10

Single EPONand SingleGigabitEthernet ONTuplinksub-card

One EPON ONToptical interfaces and

One 1000M Ethernetelectric interfaces

XEQB/1

Single10GEPONONT uplinksub-card 10GEPON

ONT uplink

One 10GEPON ONToptical interface

XEQB/4

Dual10GEPONONT uplinksub-card

Two 10GEPON ONToptical interfaces

Co-Process Card

CTMVNarrowbandco-processingcard

TDM switch,synchronismand VoIPserviceprocess

-

VectoringCo-Process Card

SVCEVectoringco-processingcard

controlenginecalculationprocessing

for vectoring

-





ADSL2/2+subscribercard

ASTGC32-lineADSL2/2+over POTSsubscriberinterface card

ADSL2/2+subscriberaccess withbuild-indistributor

32-line PSTN(1*SCSI68) and 32-lineADSL2/2+ subscriberline socket (1*SCSI68)

ASTGF

32-line PSTN(1*SCSI68) and 32-lineADSL2/2+ subscriberline socket (1*SCSI68)

AITGF

32-lineADSL2/2+over ISDNsubscriberinterface card

32-line ISDN(1*SCSI68) and 32-lineADSL2/2+ subscriberline socket (1*SCSI68)

AMTGF

32-lineADSL2/2+over POTSsubscriberinterface cardwith MELT

ADSL2/2+subscriberaccess

32-line ADSL2/2+subscriber linesocket (1*SCSI 68)

VDSL2subscribercard

VTTDN

16 -line VDSL2over POTSsubscriberinterface card(profile 30a)

VDSL2subscriberaccess withbuild-indistributor

16-line PSTN(1*SCSI68) and 16-lineVDSL2 subscriberline socket (1*SCSI68)

VSTEG

24-line VDSL2over POTSsubscriberinterface card(profile 17a)


VSTGC







VITGC

32-line VDSL2over ISDNsubscriberinterface card(profile 17a)

32-line ISDN(1*SCSI68) and 32-lineVDSL2 subscriberline socket (1*SCSI68)

VSTGH



VSTGD

32-line VDSL2over POTSsubscriberinterface cardwithvectoring(profile 17a)


VMTGD

32-line VDSL2over POTSsubscriberinterface cardwith vectoringandMELT(profile17a)

VDSL2subscriberaccess

32-line VDSL2subscriber linesocket (1*SCSI 68)

SHDSLsubscribercard

SSTDF

16-lineSHDSL.bissubscriberinterface card

SHDSLsubscriberaccess

16-line SHDSLsubscriber linesocket (1*SCSI 68)

COMBOsubscribercard

APTGC

32-lineADSL2/2+ and32-line POTSsubscriberinterface card

ADSL2/2+and POTSsubscriberaccess

32-line ADSL2/2+and POTS subscriberline socket (1*SCSI68)





VPTGC

32-line VDSL2and 32-linePOTSsubscriberinterface card

VDSL2 andPOTSsubscriberaccess

32-line VDSL2 andPOTS subscriber linesocket (1*SCSI 68)

Ethernetsubscribercard

ETCD

2 GE and 14FE Ethernetelectricsubscriberinterface card Ethernet

subscriberaccess

2-line 10/100/1000Mand 14-line 10/100Mself-adaptationEthernet electricinterface (RJ45)

ETCF

2 GE and 12FE Ethernetopticalsubscriberinterface card

2-line 1000M and12-line 100MEthernet opticalinterface

POTSsubscribercard

ATLDI 64-line POTSsubscribercard

POTSsubscriberaccess

64-line PSTNinterface (2*SCSI 68)ATLDZ

Powercard

PWDM

DC power card

-48 V DC3-core power supplysocket

PWDME -48 V DC3-core power supplysocket

PWAM

AC power card

220V/100 VAC (batterypowerbackup)

Internationalstandard AC 3-pinplug and 5.08 pitchpower supply socket

PWAME

220V/100 VAC (batterypowerbackup)

Internationalstandard AC 3-pinplug and 3-corepower supply socket

Fan card FCBM Fan cardSpeed-adjustable fans

-

3.2.2.1 Plug-in Box and Backplane

The details of the plug-in box and backplane are as follows:



Plug-in Box

The ZXDSL 9836 plug-in box is standard plug-in box with dimensions of 132.9 mm x

482.6mm x 240 mm (Height x Width x Depth).

Backplane

The ZXDSL 9836 backplane provides internal interfaces as following lists:

− Main control card interface, co-process card interface and subscriber card

interface

− Power interface: -48 V, -48V GND, 3.3 V GND

− Fan socket: -48 V, -48 V GND, pulse interface.

3.2.2.2 Main Control Card:

Introduction:

Main control card (SCMF) mainly provides following functions:

System configuration, management and control of subscriber cards

Broadband service management:

− Access xDSL subscribers through broadband bus (including ITU-T G.999.1

G.int) provided by backplane.

− Access Ethernet subscribers through broadband bus provided by backplane.

− Data exchange between uplink /cascade interface and subscriber interface is

accomplished on main control card

Provides one or two GE, EPON ONT, GPON ONT, 10GEPON ONT interfaces by

plugging in different types of uplink sub-cards.

Narrowband service management: plugs Co-process card and POTS or COMBO

subscriber card to realize voice access.



Panel Diagram:

Main control card (SCMF) typical configuration with Ethernet uplink sub-card and xPON

uplink sub-card installation is displayed in Figure 3- 7.

Figure 3- 7 ZXDSL 9836 SCMF Panel

Hardware Architecture:

Figure 3- 8 shows SCMF hardware architecture:

Figure 3- 8 ZXDSL 9836 SCMF Hardware Architecture

FPGACore Processer

Backplane Interface

Power Supply

Control Bus

Broadband Service Bus

Uplink S

ub-card

CPU

Narrowband Service Bus

Co-Process Card

External Interfaces:

Main control card (SCMF) panel provides various uplink service interfaces by inserting

different uplink service sub-cards. Table 3- 2 lists sub-cards and their external interfaces.



Table 3- 2 Uplink Sub-card Description

UplinkSub-card

NameFunctions External Interfaces

OGSDA

Gigabit Ethernetuplink service

Two 10/100/1000M self-adaptation Ethernetelectric interfaces (RJ45), with synchronousEthernet

OGSDB

One 10/100/1000M self-adaptation Ethernetelectric interface (RJ45), one 1000MEthernet optical interface, with synchronousEthernet

OGSDCTwo 1000M Ethernet optical interfaces, withsynchronous Ethernet

OGSDDTwo 1000M Ethernet optical interfaces,without synchronous Ethernet

OGSQCFour 1000M Ethernet optical interfaces, withsynchronous Ethernet

OGSQDFour 1000M Ethernet optical interfaces,without synchronous Ethernet

SGGA/10

GPON ONT uplinkservice

One GPON ONT optical interface

SGGA/11 Two GPON ONT optical interfaces

SGGP/4One GPON ONT optical interfaces and

One 1000M Ethernet electric interfaces

SGGP/7One GPON ONT optical interfaces and

One 1000M Ethernet optical interfaces

SEGB/1

EPON ONT uplinkservice

One EPON ONT optical interface

SEGB/4 Two EPON ONT optical interfaces

SEGB/7Two EPON ONT optical interfaces with twoMAC

SEGD/1 One EPON ONT optical interface

SEGD/4 Two EPON ONT optical interfaces

SEGD/10One EPON ONT optical interfaces and

One 1000M Ethernet electric interfaces

XEQB/1 10GEPON ONTuplink service

One 10GEPON ONT optical interface

XEQB/4 Two 10GEPON ONT optical interfaces



Besides uplink interfaces, SCMF provides the following interfaces as well:

CONSOLE (RJ45): One local console interface for maintaining terminal and one

local console interface for environment detecting device

MGT (RJ45): One out-of-band network interface for local network management and

one network interface for network cascade

MON (6-pin socket): One detecting socket for external alarm Boolean input

Key Features:

Main control card (SCMF) can be configured with different uplink sub-cards and provide

different uplink service interfaces. Table 3- 3 lists main control card key index.

Table 3- 3 SCMF Key Features

Item Features

Dimensions 41.4 mm x 100 mm x 215 mm(Height x Width x Depth)

Max subscriberlines and types

192 ADSL2/2+ subscriber lines, or 192 VDSL2 subscriberlines, or 96 SHDSL.bis subscriber lines, or 192 COMBO(ADSL2/2+ and POTS) subscriber lines, or 96 Ethernetsubscriber lines, or 384 POTS subscriber lines

Max powerconsumption

15 W

Hot swapping No

3.2.2.3 Co-Process Card

Overview:

Co-Process card (CTMV) realizes narrowband service and clock process, including TDM

switch and VoIP service process. It is an optional card.

Picture:

Figure 3- 9 displays the ZXDSL 9836 CTMV panel.



Figure 3- 9 ZXDSL 9836 CTMV Panel


Figure 3- 10 depicts CTMV hardware architecture. VoIP processor takes charge of

packet transformation between TDM and IP, Phase-Locked Loop module realizes clock

synchronism and maintenance in case of clock input.

Figure 3- 10 ZXDSL 9836 CTMV Hardware Architecture

TDM switch

Backplane interface

Power Supply

Sync

HW

Crystal Oscillator

Phase-Locked Loop

VoIPProcessor

HW

Key Features:

Table 3- 4 lists CTMV key features.

Table 3- 4 CTMV Features

Item Features

Card Name CTMV

Density ---

Dimensions 20.7 mm×100 mm×215mm (Height x Width x Depth)


3.3 w

Hot swapping Yes

3.2.2.4 Vectoring Co-Process Card

Overview:



The vectoring Co-Process card (SVCE) implements ES packet processing to offset the

crosstalk between lines. It is an optional card.

Picture:

Figure 3- 11 displays the ZXDSL 9836 SVCE panel

Figure 3- 11 ZXDSL 9836 SVCE Panel

Key Features:

Table 3- 5 lists SVCE key features.

Table 3- 5 SVCE Features

Item Features

Card Name SVCE

Density ---

Capacity 192 line vectoring

Dimensions 20.7 mm×100 mm×215mm (Height x Width x Depth)

3.2.2.5 ADSL2/2+ Card

Overview:

ADSL2/2+ card realize ADSL2/2+ service access and service separation of broadband

access and voice message.

The ZXDSL 9836 ADSL2/2+ subscriber cards provide various types of splitter in

compliance with ITU-T G.992, YDT (Chinese Telecommunications standards), ETSI

(European Telecommunications Standards Institute), etc, and support ADSL2/2+ over

POTS and ADSL2/2+ over ISDN.

Table 3- 6 lists the ZXDSL 9836 ADSL2/2+ cards.



Table 3- 6 ADSL2/2+ Cards

Name Card Density Functions External Interface

ASTGC

32 lines

ADSL2/2+ overPOTS subscriberaccess with abuilt-in splitter

32-line PSTN (1*SCSI 68)and 32-line ADSL2/2+subscriber line socket(1*SCSI 68)

ASTGF

32-line PSTN (1*SCSI 68)and 32-line ADSL2/2+subscriber line socket(1*SCSI 68)

AITGFADSL2/2+ overISDN subscriberinterface card

32-line ISDN (1*SCSI 68) and32-line ADSL2/2+ subscriberline socket (1*SCSI 68)

AMTGF

ADSL2/2+ overPOTS subscriberinterface card withMELT

32-line ADSL2/2+ subscriberline socket (1*SCSI 68)

Picture:

Figure 3- 12 displays the ZXDSL 9836 ADSL2/2+ panel. Take ASTGC card as an

example.

Figure 3- 12 ZXDSL 9836 ADSL2/2+ Panel


Figure 3- 13 displays ADSL2/2+ card hardware architecture. ADSL2/2+ over POTS and

ADSL2/2+ over ISDN are the same in terms of card architecture. They are different due

to the splitter they adopt. One splitter is over POTS and the other one is over ISDN.

ASTGF, AITGF and AMTGF are compliant with the latest ITU-T G.999.1 G.int.



Figure 3- 13 ZXDSL 9836 ADSL2/2+ Card Hardware Architecture

Key Features:

Table 3- 7 lists ADSL2/2+ card key features.

Table 3- 7 ADSL2/2+ Card Features

Item Features

Card Name ASTGF/AITGF/AMTGF ASTGC

Density 32

Dimensions 20.5mm×274mm×231.2mm （Height x Width x Depth）

Typical powerconsumption

23.08W 19.80W

Hot swapping Yes

Note: Typical power consumption is tested under following conditions:

50% subscribers are activated (L0 mode).

Test cable crosssection is 0.5 mm.

The test takes place in the distance of 3000 m from equipment.

3.2.2.6 VDSL2 Card

Overview:

VDSL2 card realizes VDSL2 service access and service separation of broadband access

and voice message. With the standard VDSL2 profiles, VDSL2 card is able to provide

100 Mbps transmission rate in maximum in bi-direction. The ZXDSL 9836 VDSL2 card

supports types of VDSL2 profiles configuration.



The ZXDSL 9836 VDSL2 subscriber cards provide various types of splitter in compliance

with ITU-T G.992, YDT (Chinese Telecommunications standards), ETSI (European

Telecommunications Standards Institute), etc, and support VDSL2 over POTS and

VDSL2 over ISDN.

Table 3- 8 lists the ZXDSL 9836 VDSL2 cards.

Table 3- 8 VDSL2 Cards

Name Density Functions External Interfaces

VTTDN 16

VDSL2 over POTSsubscriber interfacecard (profile 30a)with a built-insplitter

16-line PSTN(1*SCSI 68) and16-line VDSL2 subscriber socket(1*SCSI 68)

VSTEG 24 VDSL2 over POTSsubscriber interfacecard (profile 17a)with a built-insplitter


VSTGC

32


VITGCVDSL2 over ISDNsubscriber interfacecard (profile 17a)

32-line ISDN(1*SCSI 68) and32-line VDSL2 subscriber socket(1*SCSI 68)

VSTGH

VDSL2 over POTSsubscriber interfacecard (profile 17a)with a built-insplitter


VSTGD

VDSL2 over POTSsubscriber interfacecard withvectoring(profile17a)


VMTGD

VDSL2 over POTSsubscriber interfacecard with vectoringand MELT(profile

32-line VDSL2 subscriber socket(1*SCSI 68)




17a)

Picture:

Figure 3- 14 displays the ZXDSL 9836 VDSL2 panel. Take VSTEG card as an example.

Figure 3- 14 ZXDSL 9836 VDSL2 Card Panel


Figure 3- 15 displays VDSL2 card hardware architecture. VDSL2 over POTS and VDSL2

over ISDN are the same in terms of card architecture. They are different due to the

splitter they adopt. One splitter is over POTS and the other one is over ISDN.

VSTGC, VITGC, VSTGH, VSTGD and VMTGD are compliant with the latest ITU-T

G.999.1 G.int.

The VSTGD or VMTGD card works with the Vectoring Co-Process card to provide

system-level vectoring function.

Figure 3- 15 ZXDSL 9836 VDSL2 Card Hardware Architecture

Key Features:

Table 3- 9 lists VDSL2 card key features.



Table 3- 9 VDSL2 Card Features

Item Features

Name VSTGD/VMTGD VSTGH VSTGC/VITGC VSTEG VTTDN

Density 32 24 16

Dimensions 20.5mm×274mm×231.2mm （Height x Width x Depth）

Typicalpowerconsumption

40.63W 26.85W 29.95 W 30.40W 22.8 W

Hotswapping

Yes




For VTTDN card, it is configured with profile 30a and tested in the distance of 300

m.

For VSTEG, VSTGC, VSTGH, VITGC, VSTGD and VMTGD card, it is configured

with profile 17a and tested in the distance of 750 m.

3.2.2.7 SHDSL Card

Overview:

SHDSL card realizes SHDSL service access. The ZXDSL 9836 provides 16-line

SHDSL.bis broadband access or TDM service access, including 4 lines E1 or 16 lines

n*64k narrowband services.

Table 3- 10 lists the ZXDSL 9836 SHDSL cards.

Table 3- 10 SHDSL Cards

Name Density Functions External Interface




SSTDF 16

SHDSL.bis broadbandaccess, ATM/PTM mode.TDM service access (DDN),including E1 or n*64k.

16-line socket (1*SCSI68)

Picture:

Figure 3- 16 displays the ZXDSL 9836 SHDSL card panel..

Figure 3- 16 ZXDSL 9836 SSTDF Card Panel


Figure 3- 17 displays SHDSL card hardware architecture.

Figure 3- 17 ZXDSL 9836 SHDSL Card Hardware Architecture

Core Switch Module

Backplane Interface

Power Supply


SHDSL access module

CESoPmodule

System Control Unit


SHDSL Interface

Management Bus

Key Features:

Table 3- 11 lists SHDSL card features.

Table 3- 11 SHDSL Card Features

Item Features

Name SSTDF

Density 16



Item Features

Dimensions 20.5 mm×274 mm×231.2 mm （Height x Width x Depth）


ATM/PTM mode:21.1 W

TDM mode:26.1 W

Hot swapping Yes




The test takes place in the distance of 3000 m from equipment.

3.2.2.8 COMBO Card

Overview:

COMBO card integrate 32-line ADSL2/2+ or VDSL2 access, 32-line POTS access, and

32-line embedded splitter, providing high-density access services for subscribers.

Via COMBO card deployment, carriers can decrease the construction cost, save the

space of equipment room and MDF, shorten the wire arranging time. Moreover, COMBO

card is easier to be maintained and energy-effective.

Table 3- 12 lists the ZXDSL 9836 COMBO cards.

Table 3- 12 COMBO Card


APTGC

32

32-line ADSL2/2+access, 32-line POTSaccess and 32-lineembedded splitter

32-line socket (1*SCSI 68)

VPTGC

32-line VDSL2access, 32-line POTSaccess and 32-lineembedded splitter



Picture：

Figure 3- 18 displays the ZXDSL 9836 COMBO (APTGC) panel.

Figure 3- 18 ZXDSL 9836 COMBO Panel


Figure 3- 19 displays COMBO card hardware architecture. Two parts are integrated in

same board, one is for broadband service access, comprising of Line Driver modules,

AFE modules and DSP modules. Another is for narrowband service access, comprising

of splitter modules, SLIC modules, CODEC modules and VCP modules. APTGC and

VPTGC are compliant with the latest ITU-T G.999.1 G.int.

Figure 3- 19 ZXDSL 9836 COMBO Card Hardware Architecture

Backp

lane

In

terfa

ce

Interfaces

Key Features:

Table 3- 13 lists COMBO card features.

Table 3- 13 COMBO Card Features

Item Features

Name APTGC VPTGC

Density 32

Dimensions 20.5 mm×274 mm×231.2 mm (Height x Widthx Depth)



Item Features


Short distance mode 45.50W 57.8W

Long distance mode 50.90W 63.8W

Hot swapping Yes


100% ADSL2/2+ subscribers are activated (L0 mode), test cable crosssection is 0.5

mm and in the distance of 3000 m from equipment.

30% narrowband subscribers are off-hook working. Long distance is more than 1

km and short distance is less than 1 km.

For VDSL2 COMBO card, it is configured with profile 17a and tested in the distance

of 750 m

3.2.2.9 POTS Card

Overview:

POTS card provides POTS subscriber interfaces to realize narrowband voice service

access.

POTS card provides two kinds of working modes automatically: long distance mode

(longer than 1 Km), and short distance mode (within 1 Km). And short distance working

mode saves energy.

The ZXDSL 9836 provides POTS access with 64 lines card.

Table 3- 14 lists the ZXDSL 9836 POTS cards.

Table 3- 14 POTS Cards


ATLDI64

POTSsubscriberaccess

64-line PSTN interface(2*SCSI 68)ATLDZ



Picture:

Figure 3- 20 displays the ZXDSL 9836 POTS card panel. Take ATLDI card as an

example.

Figure 3- 20 ZXDSL 9836 POTS Card Panel


Figure 3- 21 displays POTS card hardware architecture.

Figure 3- 21 ZXDSL 9836 POTS Card Hardware Architecture

Bac

kpl

ane

Int

erf

ace

InterfacesKey Features:

Table 3- 15 lists POTS card features.

Table 3- 15 POTS Card Features

Item Features

Name ATLDI ATLDZ

Density 64

Dimensions 20.5 mm×274 mm×231.2 mm (Height x Width xDepth)

Typicalpowerconsumption

Shortdistancemode

21.60W 23.20W

Longdistancemode

32.60W 33.60W



Item Features

Hot swapping Yes

Note: Typical power consumption is tested under condition that 25% subscribers are

off-hook working.

3.2.2.10 Ethernet Card

Overview:

Ethernet card provides Ethernet subscriber interfaces to realize Ethernet broadband

service access. ETCD is able to support 2 lines GE (electric) and 14 lines FE (electric),

ETCF is able to support 2 lines GE (optical) and 12 lines FE (optical).

Picture:

Figure 3- 22 and Figure 3- 23 display the ZXDSL 9836 ETCD and ETCF panel.

Figure 3- 22 ZXDSL 9836 ETCD Panel

Figure 3- 23 ZXDSL 9836 ETCF Panel


Figure 3- 24 displays Ethernet card hardware architecture.

Figure 3- 24 ZXDSL 9836 Ethernet Card Hardware Architecture

Bac

kpl

ane

Int

erf

ace



Key Features:

Table 3- 16 lists Ethernet card features.

Table 3- 16 Ethernet Card Features

Item Features

Name ETCD ETCF

Density 2 GE (electric)+ 14 FE(electric)

2 GE (optical)+ 12 FE(optical)

Dimensions 20.5 mm × 274 mm × 231.2 mm (Height x Width x Depth)


8.76 W 9.76 W

Hot swapping Yes

3.2.2.11 Power Card

Overview:

The ZXDSL 9836 supports DC or AC power supply.

The DC power card (PWDM/PWDME) adopts -48 V DC power supply with working

voltage ranging from -40 V to -57 V.

The AC power card (PWAM/PWAME) adopts 110 V / 220 V AC power supply with

working voltage ranging from 88V to 290V, and high voltage DC power input ranging

from 130 to 380V DC. The power card is able to provide battery backup power supply

interface for Li/Fe or lead-acid battery connection.

The ZXDSL 9836 supports the following typical power configuration scenario:

1. Single DC power supply.

2. Single AC power supply.

3. AC and battery supply (built-in battery charging and discharging management

function).



The DC power card (PWDM/PWDME) is for scenario 1, AC power card (PWAM/PWAME)

is for scenario 2--3.

Picture:

Figure 3- 25 and Figure 3- 26 display the ZXDSL 9836 AC power card (PWAM/PWAME)

and DC power card (PWDM/PWDME).

Figure 3- 25 ZXDSL 9836 AC Power Card Panel

Figure 3- 26 ZXDSL 9836 DC Power Card Panel

Key Features:



Table 3- 17 lists power card features.

Table 3- 17 Power Card Features

Item Features

Name PWDM PWDME PWAM PWAME

Size 62.1 mm × 100 mm × 215 mm (Height x Width x Depth)


11.46W 21.46W

Lightning &surge protection

±1Kv/±2Kv ±2Kv/±4Kv/±3kA ±6kV/±5kA ±6kV/±5kA

3.2.2.12 Fan Unit

Overview:

The ZXDSL 9836 Fan Unit is installed in the left side of plug-in box and works in the

draught-to-external mode. It contains two built-in adjustable speed fan modules with the

maximal speed of 4500 rpm. Fan speed can be controlled by the main control card.

In real time, the main control card detects ambient temperature and records system

temperature curve by built-in sensors. According to the pre-configured policy, fan

modules are informed to run under certain speed, to maintain the system running in

normal temperature, and to keep the appropriate balance between noise and heat

dissipation.

The fan unit is able to provide one -48 V DC power supply outlet, which is able to supply

power to peripheral devices such as environment detecting device. The rated current of

peripheral device is supposed to be less than 0.5A.

Picture:

Figure 3- 27 displays the ZXDSL 9836 Fan Unit.



Figure 3- 27 ZXDSL 9836 Fan Unit Panel


Figure 3- 28 displays relationship between the fan unit and the main control card.

Figure 3- 28 ZXDSL 9836 fan unit and main control card relationship

Back

plane

In

terf

ace

Key Features:

Table 3- 18 lists Fan Unit features.

Table 3- 18 Fan Unit Features

Item Features

Name FCBM

Dimensions 126.9 mm × 48.1 mm × 225 mm (Height x Width x Depth)

Speed Two adjustable speed fans with the maximum speed of4500 rpm


4.6 W (room temperature, 35% full speed)

Hot Swapping Yes



3.3 Cabinet

Table 3-19 Cabinet Specification

Num of

ONUs

installed

TypeDimensions（Height x

Width x Depth）

MDF capacity

(inner/outer)

Install

method

1 OUT50ET 1035×770×460 16/10 Loop, 384/ 400 pole/wall/floor

2 EC50EC-S 1500 ×850 ×500 16/10 Loop, 896/ 960floor/elevated

platform

3.3.1 OUT50ET

Item Feature

Type Equipped with Heat exchanger and

sealed

Space for main equipments 4U+2U

Rectifier (Maximum

Output:A)

40



Battery capacity (AH) 24 / 38

3.3.2 EC50EC-S

Item Feature

Type Equipped with Heat exchanger and

sealed

Space for main equipments 10U

Rectifier (Maximum

Output:A)

40

Battery capacity (AH) 50 / 100

3.4 Software Architecture

Figure 3- 29 displays the ZXDSL 9836 software architecture.

Figure 3- 29 ZXDSL 9836 Software Architecture



The ZXDSL 9836 software architecture is composed of an NM sub-system, a broadband

sub-system, an narrowband sub-system, a bearer sub-system and an operation support

sub-system.

3.4.1 NM Sub-system

The NM sub-system supports broadband and narrowband commands and NM

operations. It distributes commands to the broadband sub-system and the narrowband

sub-system for operation and management. It also provides management on both

broadband and narrowband alarms.

3.4.2 Broadband Sub-system

The broadband sub-system is composed of a protocol sub-system and a service

sub-system.

The protocol sub-system implements TCP/IP protocol management.

The service sub-system implements system management, service management

and operation.

3.4.3 Narrowband Sub-system

The narrowband sub-system implements narrowband service, narrowband bearer and

narrowband protocol management.

3.4.4 Bearer Sub-system

The bearer sub-system implements broadband service and narrowband traffic

distribution and control.

3.4.5 Operation Support Sub-system

It works as system shielding module and provides support for broadband and

narrowband protocol and service.



4 Functions

4.1 DSL Specification

4.1.1 ADSL2/2+

The ZXDSL 9836 supports ADSL2/2+ and complies with ITU-T992.x.

It supports Annex A, Annex B, Annex I, Annex J, and Annex L, Fast and Interleave delay,

and link activation and connection according to line conditions and adaptive mode of the

user terminal devices.

It supports the following ADSL2 features:

bit Constellation

It uses 1-bit encoding. When the channel quality is bad and the channel is allocated with

only one bit, the channel can still bear data, which is very important in long-distance

transmission.

Pilot Channel Floating

In early xDSL specifications, the pilot subchannel and the subchannel for initialization are

the fixed frequency bands. In actual application, conditions of other subcarrier channels

might be good but the pilot channel might be influenced by interferences such as Bridge

Tap or Radio Frequency Interference (RFI), so the xDSL link cannot be activated. It is

supplemented in the ADSL2 specification that the locations of the pilot and the

initialization channel can be changed in initialization phase so that anti-interference

capability of ADSL2 is improved.

Bit Swapping (BS)

Bit swapping increases adaptive capability of ADSL2 in dynamic environment and

improves the line stability. When discovering a subchannel is interfered by noise, the



transceiver transmits the bearing bit on the subchannel to other subchannel with good

signal quality.

Seamless Rate Adaptation (SRA)

With the environment changes, interference from environmental noises on a certain link

varies in different time period, for example, the electromagnetic interference caused by

power cables is different in the daytime and at night. Besides, the user cables in one

bundle interfere with each other and the interference changes a lot when other user

cables are activating or deactivating. The SRA technology can solve this problem. When

ADSL2 detects the channel environment changes, it will provide rate adaptation for the

new environment and guarantee no link disconnection when the Bit Error Rate (BER) is

less than 10-7.

L2 and L3 Low Power Management Mode

The L2 state is a low-power mode that allows fast entering or exiting the low-power mode

according to the ADSL2 link traffic sent by the ADSL Transceiver Unit at the Central

Office End (ATU-C) to reduce the transmission power. In this mode, the subscriber is

unaware of the power change. The L3 idle state enables the ATU-C and ADSL

Transceiver Unit at the Remote Terminal End (ATU-R) enter into sleep or standby status

to reduce the power consumption.

Single-Ended Loop Testing (SELT)

SELT obtains the line parameters and features through the testing methods on the

Central Office (CO) side when there is no CPE (Customer Premises Equipment) on the

user side. SELT tests parameters including Loop Length, Loop Termination,

Downstream/Upstream Shannon Capacity, Inband Noise (0-1.1 MHz), Termination

Response, and Downstream/Upstream Rate vs Margin.

Dual-Ended Line Testing (DELT)

DELT enhances ADSL2 service and diagnosis functions. When the line quality is too bad

to enter into showtime state, DELT can troubleshoot the line problem. The information

obtained by DELT helps fault locating and damage confirmation.

DELT can test the following parameters:



− Channel Characteristics Function H(f) per subcarrier

− Quiet Line Noise (QLN) per subcarrier

− Signal to Noise Ratio (SNR) per subcarrier

− Line Attenuation (LATN)

− Signal Attenuation (SATN)

− Signal-to-Noise Margin (SANRM)

− Attainable Net Data Rate (ATTNDR)

− Far-End Actual Aggregate Transmit Power (ACTATP)

Pair bonding

It supports pair bonding defined in ITU-T 998.1. With the multi-pair bonding technology, it

can provide higher downstream rate and high bandwidth service for the subscriber and

improve service quality for the remote subscribers.

4.1.2 VDSL2

The ZXDSL 9836 supports VDSL2 access and comply with ITU-T 993.2.

It supports Annex A, Annex B 997, Annex B 998, and the eight profiles defined in ITU-T

993.2. It selects the optimal profile to transmit the data according to the rate requirement.

It supports Vector of Profiles (VoP) defined in Broadband Forum TR-165. It optimizes the

configuration division method, segmenting it into nine profiles including service related

profiles, spectrum related profiles, quality management related profiles. This division

method effectively reduces the device requirements for total number of profiles and

enables flexible DSL configuration management.

It supports the following VDSL2 features (the features the same as that of ADSL2 are not

repeated):

Downstream Power Back-Off (DPBO)



When the VDSL2 and ADSL devices are in hybrid deployment, the VDSL2 devices are

usually used for short-distance networking such as FTTB/FTTC, while ADSL devices are

placed at the CO end far from the subscriber. VDSL2 devices and ADSL devices share

the copper cable resource in one area. Under this condition, ADSL signal is attenuated

when it reaches to VDSL2 device, the downstream signal of VDSL2 device on the user

side will cause large Far-End Crosstalk (FEXT). DPBO technology can adjust the

overlapped transmission power spectrum between the VDSL2 and ADSL devices to

reduce the FEXT of ADSL devices.

Upstream Power Back-Off (UPBO)

In VDSL2 device deployment, the distance from each subscriber to the CO device is

different. With less attenuation, the upstream signal near the CO is strong and causes

large FEXT on adjacent lines. With more attenuation, the upstream signal far from the

CO is weak and is more likely to be interfered by FEXT of other lines. UPBO is a

technology to protect the remote subscriber from being interfered by the adjacent

subscriber. By reducing the power of the upstream signal which is strong and near to the

CO, the UPBO technology balances all upstream power spectrums when they reach the

CO and avoid severe interference of the strong lines on the weak lines. The ZXDSL 9836

supports “reference PSD UPBO” and “equalized FEXT UPBO”.

Management Information Base-Power Spectral Density Shaping (MIB-PSD

Shaping)

In VDSL2 technology, the template PSD can be defined within the peak range. The

model of the template PSD is defined through defining series of reference points. Each

reference point contains a spectrum index and one PSD peak value, and can be applied

to the port in profile format.

Radio Frequency Interference (RFI) Notching

The VDSL2 band covers medium and short wave broadcasting and amateur radio

frequency, so it is influenced by RFI of these wireless signals. On the interfered

frequency point, length of the interleaved code or redundancy length of the RS

(Reed-Solomon) code will be increased, which will influence the rate and the channel

delay. By notching the overlapped part of the VSDL2 power spectrum and the wireless



signals and configuring the power spectrum density of the notching no higher than -80

dBm/Hz, these frequency bands will not bear signals to avoid the RFI.

Extended US0 Band

Through extended US0 band, VDSL2 will be able to support long-distance access with

the capability similar to that of ADSL. The US0 band has a lower frequency which can

vary from 4 kHz (without POTS) to 25 kHz (with POTS), and an upper frequency which

can vary from 138 to 276 kHz, depending on whether the upstream requires a higher

rate.

Virtual Noise

Degree of crosstalk varies with number of interference sources. In actual applications,

although there is no interference source in training and a higher rate is achievable, the

crosstalk might be increased when the interference source subscribers are online, which

may affect the BER or even cause re-training when the crosstalk exceeds the margin.

The virtual noise technology obtains a preset template based on statistics of the pervious

crosstalk. The transceiver performs training according to the template to obtain the

parameters such as noise margin and rate which meet the requirements. Namely,

different noise margins are set for different subcarriers and large noise margin is

maintained for the subcarrier with large potential crosstalk interference.

Impulse Noise Protection (INP)

As a key feature to develop video applications on DSL, INP can effectively eliminate the

short noise caused by external interference sources. INP defines the number of

correctable DSL symbols. The channel with bigger INP value has stronger

anti-interleaving capability, but the transmission delay is prolonged and the bandwidth is

affected.

Improved INP (Retransmission)

ITU-T 998.4 defines the improved INP technology as well as retransmission method and

principle. Different from traditional FEC and interleaving technology, the improved INP

technology can correct the DMT symbols affected by the impulse noise through

retransmission mechanism of Physical Media Specific Transmission Convergence

(PMS-TC), and can provide higher bandwidth, lower delay and BER.



INM

Spectrum span of VDSL2 can reach 30MHz. The impulsive noise detect helps to improve

line stability. By detecting the impulsive noise length (IL) and noise inter-arrival time (IAT),

it evaluates the effect of the impulsive noise on DSL signal transmission and takes

effective protective measures according to the characteristics of the impulsive noise.

Emergent rate reduction (SOS)

Similar to Seamless Rate Adaption (SRA), SOS adapts to the burst noise by decreasing

the rate. By sending an On-line Reconfiguration (OLR) command and synchronization

handover command without interchanging bit allocation table and gain table, SOS avoids

large amount of interacting messages between the receiver and the transmitter to

achieve fast response to the burst noise.

Dynamic Spectrum Management (DSM)

By balancing the dynamic spectrum, DSM aims to improve line rate, distance and

stability, or transmit signals with the lowest power when the performance and stability

requirements such as rate, margin, and BER are met. DSM sends PSD by optimizing

and managing parameters and signals to coordinate signal transmission and receiving in

the entire cable bundle, so that the transmission performance of the lines in the entire

cable bundle is optimized. DSM Level 3 eliminates crosstalk through joint transmission

and receiving on the CO side and by signal compensation to make performance of any

line in the bundle close to non-interference performance. In DSM Level 3 processing, the

signals sent on each line contain component signals of its own and the other pairs, so

DSM is often called vectoring (G.vector) or multiple-input-multiple-output (MIMO).

Bonding

In compliance with ITU-T 998.1 and 998.2, the bonding technology provides the

long-distance subscribers with higher upstream rate and high bandwidth service.

Metallic Ended Line Test (MELT)

With IP-based development of the whole network, for IP telephone terminals on the user

side such as IAD, the copper cable is not connected to the PSTN device, so the

traditional copper cable maintenance method is unable to test the metallic line and a new



technology must be adopted for daily line maintenance. MELT can obtain the parameters

such as external voltage and current which are the same as that of the traditional

narrowband copper cable test (112) in pure broadband application scenario. Meanwhile,

MELT can supply wetting current to prevent the copper cable from rusting, which is very

important for maintenance of the copper cable with no feeder cable.

ADSL Compatibility

The same as ADSL, VDSL2 adopts discrete multi-tone (DMT) coding technology. In

addition, it inherits ADSL technology in framing, interleaving, and Trellis coding, so

VDSL2 is compatible with ADSL terminals, which paves the road for smooth evolution of

the access technology to VDSL2.

4.1.3 SHDSL

The ZXDSL 9836 supports SHDSL access and complies with ITU-T G.991.2 standards.

It supports the following broadband features:

− Annex F, data rate is up to 5.69 Mbps over 2-wire links;

− TC-PAM16 and TC-PAM32;

− ATM and EFM;

− Pair bonding over existing wire links, up to 22.76 Mbps data rate at 8-wire

links.

It supports the following CES features:

− SHDSL E1 modem access;

− SHDSL N*64K V.35 modem access;

− Non-structured SAToP and structured CESoPSN;

− RFC396 and RFC3985 for PWE3;

− RFC4197 for TDM.



Notes: In scenario for E1/V.35 service access, the ZXDSL 9836 is able to work in master

mode or slave mode.

4.1.4 Interworking Function (IWF)

As shown in Figure 4- 1, the Access Node is the ZXDSL 9836. The Access Node (AN) is

the first convergence node in the DSL access network, besides terminating the DSL

physical layer signals, it provides the following IWFs:

Terminates ATM layer on the user side

Provides interconnection between Ethernet uplink and the convergence network

Provides IWF of the ATM layer on the user side and IWF of the Ethernet layer on the

network side

Figure 4- 1 Schematic Diagram of ATM-Ethernet IWF

4.1.4.1 PPPoA IWF

When the upstream AN receives PPPoA packets from the user side, the AN shall support

PPPoA IWF, namely, IWF extracts PPP loading from the PPPoA packets, encapsulates

them into PPPoE packets, and send them to the convergence network. The downstream

IWF extracts PPP loading from PPPoE packets received from the convergence network,

encapsulates them into PPPoA packet, and send them to the subscriber.

PPPoA IWF enables a PPPoE Client entity for each PPPoA user, the PPPoE Client

performs the PPPoE Discovery process by interconnecting with PPPoE Server through

the uplink port. When the discovery process ends, PPPoA IWF can obtain MAC address



of PPPoE Server and makes it the destination MAC address for PPPoE packets

construction. PPPoA IWF allocates each PPPoA user with one MAC address which can

be automatically obtained from MAC-pool. PPPoA IWF makes this address as the source

MAC address of PPPoE packets. PPPoE Clients can also obtain session_id in the

discovery process and use it in PPPoE packets construction.

4.1.4.2 IPoA IWF

When the upstream AN receives IPoA (1483R) packets from the user side, the AN shall

support IPoA IWF, namely, IWF converts the IPoA packets into IPoA (1483R) packets

and transmits them to the convergence network. The downstream IWF converts the IPoE

packets received from the convergence network to IPoA packets and transmits them to

the subscriber.

To implement IPoA and IPoE packets conversion, the AN shall provide one subscriber’s

MAC address (automatically obtained from MAC-pool) for each ATM pvc bearing the

IPoA packets, so that the data can be transmitted to the correct ATM link according to the

MAC address. Meanwhile, the AN shall obtain the subscriber IP address to respond to

ARP solicitation of the uplink device and get MAC address of the gateway.

4.1.5 Vectoring (G.VECTOR / DSM L3)

The ZXDSL 9836 supports vectoring which is compliant with ITU-T G.993.5 standards.

Principle:

Vectored DSL technology (Dynamic Spectrum Management Level 3) is able to mitigate

the crosstalk effects that form the most serious performance bottleneck for dense

deployments of DSL lines.

Self crosstalk that generated from almost every pair in the bundle connected to a

node, produces most significant impact to VDSL performance, especially in shorter

loops.

− Near-end crosstalk (NEXT) is not problem since VDSL2 uses different

frequency band for upstream and downstream.



− Far-end crosstalk (FEXT) greatly reduces VDSL2 performance. The basic

principle of vectoring is the reduction or even elimination of crosstalk (self

FEXT).

Vectored system learns and analyzes crosstalk from every pair in the bundle.

Downstream: pre-compensate for FEXT so that signal arrives at CPE receiver

FEXT-free.

Upstream: cancels FEXT in receiver, operating at very-high-speed.

The vectoring-enabled port inspects crosstalk levels and calculates the crosstalk

coefficient matrix by the co-process card during the link establishment process.

Downstream signals are pre-processed according to the crosstalk coefficient matrix

before they are sent. Upstream signals are adjusted according to the crosstalk

coefficient matrix.

The calculation and processing processes of the ZXDSL 9836 are carried out on the

CO end. To enable the modem support the vectoring function, you only need to

upgrade the firmware of the modem.

Product features:

Vectoring is exactly the approach for dramatic performance enhancement. All the lines

connected to the ZXDSL 9836 are coordinated. With vectoring it is irrelevant on which

port of the ZXDSL 9836 an individual line is connected and no rewiring is required.

Vectoring across the entire node, independent of binder, cable or chassis.

Scalable from a few lines to hundreds of lines per node, dynamically identify/cancel

primary disturbers.

Delivering 100 Mbps+ to the subscribers, providing fiber-level performance for

FTTC/FTTB scenarios.

Carrier-class performance, improved power-performance and deployment

predictability.

Benefit:



Via vectoring, Carriers can get such deployment advantages:

Deployable in larger cabinet locations, Scalable to high port count ports, maximal

flexibility and upgradability.

Much lower operational complexity (no rewiring), much lower CAPEX than a pure

fiber deployment, much lower OPEX for service providers.

Stable performance and high speed, ideal for enabling advanced services.

4.2 GPON

4.2.1 Standards Followed

The ZXDSL 9836 is in compliance with ITU-T G.984 series standards:

ITU－T G.984.1/ G.984.2/ G.984.3/ G.984.4

The longest distance between OLT and ONU is no less than 20 km.

Authentication and discovery mechanism:

The authentication mechanism takes serial number with optional password as the

authentication ID. The discovery mechanism realization goes in compliance with ITU-T

G.984.3.

Encryption mechanism:

It adopts AES-128 encryption algorithm regulated in ITU-T G.984.3. Encryption key

update and synchronization go in compliance with G.984 standard.

FEC Function:

Its up/downstream transmission supports FEC function and goes in compliance with

ITU-T G.984.3.



4.2.2 Bandwidth Allocation

Static bandwidth allocation:

It supports static bandwidth allocation in compliance with ITU-T G.983.1.

DBA (Dynamic Bandwidth Allocation):

It supports DBA.

DBA supports fair bandwidth scheduling policy for the same CoS when traffic is jammed.

4.2.3 GEM Adaptation

It supports GEM mode.

It supports GEM frame mapping to GTC payload.

It supports Ethernet frame mapping to GEM frame and Ethernet mapping to GEM port

based on VLAN, VLAN/CoS.

4.2.4 T-CONT

It supports taking T-CONT as basic upstream service unit.

It supports mapping from GEM port to T-CONT Queue based on GEM port.

It supports T-CONT Queue scheduling methods: WRR, SP or WRR/SP.

4.2.5 Operation and Maintenance

It supports OAM management channel defined by ITU-T G.984.4.

It supports PLOAM management channel defined by ITU-T G.984.4.



4.2.6 Optical Linkage Measurement and Diagnosis

The ZXDSL 9836 supports digital diagnostic interface based on SFF-8472 optical

module. It is able to detect the optical module operating temperature, supply voltage,

bias current, transmitted power and received power.

It supports permanent light inspection and automatic shut down.

4.2.7 Fiber Protection Alternation

The ZXDSL 9836 PON interface contains a built-in front optical switch which is able to

check line condition and decide which line is active and the altering time.

Figure 4- 2 ZXDSL 9836 Fiber Protection (GPON)

Alternation Reasons:

Input optical signal loss

Input path channel deteriorating

4.3 EPON


The ZXDSL 9836 is in compliance with IEEE 802.3 series standards:



It provides symmetric up/downstream 1.25G transmission rate and this goes in

compliance with IEEE802.3 ah standard.

It supports wavelength division multiplexing technology and one-fiber bidirectional

transmission. Its downstream central wavelength is 1490 nm and upstream central

wavelength 1310 nm.

It supports Ethernet service transmission in format of 802.3 Ethernet frame and this goes

in compliance with IEEE802.3ah standard.

It adopts 1000BASE-PX20 or 1000BASE-PX20+ physical interface, PMD layer is

compliant with chapter 60, IEEE 802.3-2005.

Multi-Point Control Protocol (MPCP):

Multi-Point control Protocol (MPCP) defines MAC control mechanism in P2MP network, it

is complied with chapter 64, IEEE 802.3-2005.


It supports triple churning mechanism of China Telecom spec (CTC). After MPCP

Discovery and OAM Discovery, system starts interact churing key, then encrypts all

downstream traffic, including data packets, MAC control frames and OAM frames.

4.3.2 System Registration and Authentication

The ZXDSL 9836 supports ONU plug-and-play and automatic registration.

ONU Identifying and Authentication:

The ZXDSL 9836 supports both ONU identifying and authentication methods:

ONU Identified and authenticated by MAC address

ONU identified and authenticated by logical ID (Logical ID is a string of characters

prolonged and can be configured independently.

Dead Mechanism:

The ZXDSL 9836 supports dead mechanism when ONU registration is denied by OLT.



4.3.3 Logical Link Identification (LLID)

The ZXDSL 9836 supports single LLID.

Independent MAC address

Standard MPCP discovery and registration, standard Gate message and Report

message processing.

Independent DBA configuration, independent key generating and exchanging

protocol, independent configuration and management via OAM link.

4.3.4 Operation Administration and Maintenance (OAM)

The ZXDSL 9836 supports OAM as regulated in Clause57, IEEE802.3-2005, Managed

Object Class, Attribute and Action Organization as regulated in Clause30.

It adopts Organization Specific Extension mechanism to realize extended ONU remote

OAM function as regulated by IEEE802.3-2005.

It is compliant with China Telecom spec (CTC) interoperability.

4.3.5 Dynamic Bandwidth allocation (DBA)

The ONU supports describing all queues status and reporting local queue status to the

OLT. This enables the OLT to allocate dynamically uplink bandwidth to the ONU.

ONU up/downstream service can be mapped to queues with different priority for

dispatching operation by IEEE802.1D User Priority.


The ZXDSL 9836 supports full-protection type-C scheme of China Telecom. Its PON

interface contains a built-in front optical switch which is able to check line condition and

decide which line is active and the altering time.



Figure 4- 3 ZXDSL 9836 Fiber Protection (EPON)





The ZXDSL 9836 provides SFF-8472 optical module digital diagnostic interface to detect:

operation temperature, supply voltage, bias current, transmitted power and received

power.

The ZXDSL 9836 supports permanent light inspection and automatic shut down.

4.4 10GEPON


In compliance with IEEE 802.3 series standards:

The ZXDSL 9836 is an IEEE 802.3av-compliant 10GEPON ONU, and supports both

10/1G asymmetric and 10/10G symmetric mode.

Because of backward compliance with 1G EPON, ODN can be reused and shared

among 1G EPON and 10GEPON devices. The ZXDSL 9836 supports wavelength



division multiplexing technology and one-fiber bidirectional transmission. Its downstream

central wavelength is 1577 nm and upstream central wavelength 1310 nm (10/1G

asymmetric) or 1270 nm (10/10G symmetric).

It adopts 64B/66B codec which is same as IEEE 802.3ae 10G Ethernet, codec efficiency

gets big promotion in comparison with 8B/10B of 1G EPON.

It supports increasing distance and split ratios for PON deployments, in both 10/10G

symmetric and 10/1G asymmetric modes.

Multi-Point Control Protocol (MPCP):

MPCP gets some adaptive improvement based on 1G EPON.

Different rate ONUs can be coexisted over same ODN.


It supports triple churning mechanism of China Telecom spec (CTC). After MPCP

Discovery and OAM Discovery, system starts interact churing key, then encrypts all

downstream traffic, including data packets, MAC control frames and OAM frames.

Forward Error Correction (FEC):

It supports mandatory stream-based RS (255, 223) FEC for symmetric 10G data path.

4.4.2 System Registration and Authentication

The ZXDSL 9836 supports ONU plug-and-play and automatic registration.

ONU Identifying and Authentication:

The ZXDSL 9836 supports both ONU identifying and authentication methods:

ONU Identified and authenticated by MAC address

ONU identified and authenticated by logical ID (Logical ID is a string of characters

prolonged and can be configured independently.

Dead Mechanism:



The ZXDSL 9836 supports dead mechanism when ONU registration is denied by OLT.

4.4.3 Logical Link Identification (LLID)

The ZXDSL 9836 supports single LLID.

Independent MAC address

Standard MPCP discovery and registration, standard Gate message and Report

message processing.

Independent DBA configuration, independent key generating and exchanging

protocol, independent configuration and management via OAM link.

4.4.4 Operation Administration and Maintenance (OAM)

The ZXDSL 9836 supports OAM as regulated in Clause57, IEEE802.3-2005, Managed

Object Class, Attribute and Action Organization as regulated in Clause30.

It adopts Organization Specific Extension mechanism to realize extended ONU remote

OAM function as regulated by IEEE802.3-2005.

It is compliant with China Telecom spec (CTC) interoperability.

4.4.5 Dynamic Bandwidth allocation (DBA)

10GEPON and 1GEPON adopt consistent DBA schedule.

The ONU supports describing all queues status and reporting local queue status to the

OLT. This enables the OLT to allocate dynamically uplink bandwidth to the ONU.

The ONU up/downstream service can be mapped to queues with different priority for

dispatching operation by IEEE802.1D User Priority.




The ZXDSL 9836 supports full-protection type-C scheme of China Telecom. The ZXDSL

9836 PON interface contains a built-in front optical switch which is able to check line

condition and decide which line is active and the altering time.

Figure 4- 4 ZXDSL 9836 Fiber Protection (10GEPON)





The ZXDSL 9836 provides SFF-8472 optical module digital diagnostic interface to detect:

operation temperature, supply voltage, bias current, transmitted power and received

power.

The ZXDSL 9836 supports permanent light inspection and automatic shut down.

4.5 L2 Functions

4.5.1 L2 BRIDGE Functions

IVL:



It supports standard IEEE802.1D L2 Bridge functions.

It supports MAC+S-VID learning and forwarding mechanism.

It supports Ethernet frames which are in compliance with Ethernet V2 standard

format.

It supports packets line-speed forwarding.

It supports JUMBO frames forwarding.

It supports special packets such as IGMP, BPDU packets capture and transparent

transmission

Basic Functions of Ethernet Interface:

Port rate limitation and self-adaptation supports 10 / 100 M restriction and

self-adaptation.

Port mode restriction and self-adaptation supports full-duplex and half-duplex

modes and self-adaptation.

It supports IEEE802.3x traffic control protocol.

MAC address learning and aging:

It supports MAC address automatic learning mechanism.

It supports MAC address automatic aging mechanism.

It supports static MAC address configuration.

It supports reserved MAC address filtering.

It supports MAC address statistics, based on port or VLAN.

STP (Spanning-Tree Protocol):

All Ethernet interfaces support STP defined by IEEE802.1d.

All Ethernet interfaces support RSTP defined by IEEE802.1w.



All Ethernet interfaces support MSTP defined by IEEE802.1s.

L2 link aggregation:

Ethernet interfaces support L2 link aggregation mode to realize traffic balance and

redundancy backup.

It complies with LACP defined by IEEE 802.3ad.

Subscriber interface L2 isolation:

A subscriber can only exchange with uplink port. Subscribers are isolated from each

other.

Mirroring:

It supports mirroring based on physical interfaces.

It supports mirroring based on traffic.

It supports Ingress and Egress independent mirroring.

Virtual MAC:

Because of untrustable source MAC address, the operators hope the source MAC

addresses are manageable and controllable, virtual MAC address can solve this problem.

For the Ethernet frames received in the upstream direction, the source MAC A

(subscriber address) is replaced with VMAC. For the Ethernet frame received in the

downstream direction, the destination VMAC is replaced with MAC A (subscriber

address). VMAC contains the MAC of the ETH header and the ARP request or DHCP

Bootp. The VMAC function can be managed based on port and VLAN. Both the illegal

all-zero MAC addresses in the upstream direction and the multicast MAC addresses in

the downstream direction will not be processed.

Virtual MAC can be divided into 1:1 and N:1 mode according to allocation mode of MAC

A’ (system address):

In 1:1 mode, each subscriber’s MAC will be replaced into an unique manageable

VMAC that includes the customization contents such as MSANID(This MSANID can



be used for distinguishing different MAC area and can be used for VMAC of the

ZXDSL 9806H.), slot and port information, and one MAC collision domain (different

values are allocated to different subscriber source MAC address. Each port

supports maximum 64 VMAC processing). Meanwhile, both VMAC and MAC

addresses support ageing with the default ageing time of 300s..

In N:1 mode, all subscribers’ MAC addresses are replaced with the same system

MAC address. In PPPoE application, SessionId is the only identifier of PPPoE

session, so when the PPPoE session obtains a SessionID, it establishes dynamic

relationship between the subscriber’s MAC address and SessionID as the basis for

MAC address replacement. In IPoE application, IP address is the only identifier for

IPoE, so when DHCP obtains an IP address, it establishes dynamic relationship

between the subscriber’s MAC address and the IP address as the basis for MAC

address replacement.

4.5.2 VLAN Functions

VLAN protocol:

It supports IEEE 802.1q VLAN (Q-VLAN ID ranging from 1 to 4094).

It supports IEEE 802.1ad VLAN Stacking (C-VLAN ID and S-VLAN ID ranging from

1 to 4094).

It supports VLAN definition and application regulated in Broadband Forum TR-101.

VLAN ID:

It supports adding S-Tag to untagged or priority tagged frames from subscriber

interfaces on demands.

It supports adding C-Tag and S-Tag to untagged or priority tagged frames from

subscriber interfaces on demands.

It supports transforming Q-Tag to S-Tag for Q-Tagged frames from subscriber

interfaces on demands.



It supports reserving Q-Tag or transforming Q-Tag to C-Tag and adding S-Tag to

Q-Tagged frames from subscriber interfaces on demands.

It supports removing VLAN ID from downstream frames from NSI before being sent

to subscriber interfaces. Removing VLAN ID means to remove S-Tag or to remove

S-Tag and C-Tag both.

It supports configuring subscriber interfaces in terms of frame types the interfaces

can receive. The interface can be configured to be VLAN tagged, untagged, priority

tagged or admit all. The frames will be discarded if they are not in compliance with

the interface configuration.

It supports Selective QinQ VLAN ID, supports adding or mapping S-Tag based on

subscriber interfaces type or command keywords including C-VID, C-Tag priority,

Ethernet type.

VLAN membership list:

The system configures VLAN membership list to transparent VLAN ports to classify

VLAN tagged frames. VLAN-tagged frames whose IDs are not listed in the VLAN

membership list are to be forwarded as TLS service. Otherwise they are forwarded as

non-TLS service.

The system configures VLAN membership list to none transparent VLAN ports to receive

or discard VLAN tagged frames. VLAN-tagged frames whose IDs are being listed in the

VLAN membership list are to be received and forwarded. Otherwise they are discarded.

VLAN translation list:

The system configures VLAN translation list for specific VLAN members. These listed

VIDs can be translated between Q-VID and S-VID, Q-VID and C-VID or Q-VID and

C-VID / S-VID pair.

1:1 VLAN:

1:1 mapping from subscriber interfaces (physical interface or logical interface) to VLANs.

The mapping is unique at ONU/OLT node or convergence network.

Forwarding mechanism in 1:1 VLAN mode:



It supports subscriber MAC address learning.

Service stream should be S-Tagged when it is accessing OLT. And C-Tag is

optional.

The S-Tag / C-Tag pair is unique in the system.

N:1 VLAN:

N:1 VLAN mapping is the mapping from subscriber interfaces (physical interfaces or

logical interfaces) to VLANs. The subscriber interfaces can belong to one ONU / OLT

node or different ONU / OLT nodes.

Forwarding mechanism in N:1 VLAN mode:

It supports prohibiting service forwarding among different subscriber interfaces and

realizing L2 isolation.

It supports subscriber MAC address learning.

Service stream should be S-Tagged when it is accessing OLT.

VLAN transparent port:

VLAN transparent port is the subscriber port which is able to bear TLS and non-TLS, and

TLS is a must. VLAN transparent port forwards directly TLS stream without modifying

its initial framehead or payload.

Untagged and priority-tagged service stream beared by VLAN transparent port is

forwarded as TLS service.

Untagged service stream beared by VLAN transparent port can be forwarded as TLS if

its VLAN ID belongs to this port VLAN membership list otherwise it can be forwarded as

non-TLS if its VLAN ID does not belong to this VLAN membership list.

The port configures one TLS S-VID for TLS to encapsulate S-Tag. The TLS S-VID is

unique for each VLAN transparent port.



For non-TLS stream, corresponding VLAN translation list is configured to VLAN

membership list to implement bidirectional translation between Q-VID and S-VID, Q-VID

and C-VID or Q-VID and C-VID / S-VID pair.

For downstream, the operation is just the opposite of the upstream.

Non VLAN transparent port:

Non VLAN transparent port is the subscriber port which is able to bear non TLS only.

The system adds S-Tag or both C-Tag and S-Tag to untagged and priority-tagged

service stream beared by non VLAN transparent port. It is able to support:

Configuring default S-Tag and C-Tag to the port

Configuring Ethernet type filter which supports PPPoE, IPoE and ARP and

implements VLAN allocation (C-Tag and S-Tag) based on Ethernet protocol

For VLAN tagged service stream which is not beared by non VLAN transparent port, the

operation is:

Discarding those VLAN tagged frames whose VID does not belong to VLAN

membership list.

Configuring VLAN translation list to VLAN membership list to implement

bidirectional translation between Q-VID and S-VID, Q-VID and C-VID or Q-VID and

C-VID / S-VID pair.

For downstream, the operation is just the opposite of the upstream.

4.5.3 Ethernet OAM Functions

According to their functions and application coverage, Ethernet OAM standards can be

classified into:

UNI to UNI Service-layer OAM: used by service suppliers

Connectivity OAM: used by carriers

Linkage-level OAM: used for physical linkage detecting



Ethernet local management interfaces

These protocols are supplementary to each other and are able to provide end-to-end

service operation, management and maintenance. Their system architecture is displayed

in Figure 4- 5.

Figure 4- 5 Ethernet OAM Architecture

The ZXDSL 9836 supports IEEE 802.1ag and IEEE 802.3ah. It is able to provide real

end-to-end Ethernet service management and all service-layer OAM application.

IEEE 802.1ag:

IEEE 802.1ag can run end-to-end and realize connectivity OAM functions.

The ZXDSL 9836 supports MEP. MEP is applied to uplink interface / cascade interface /

subscriber interface which starts or terminates CFM.



Figure 4- 6 IEEE 802.1ag Architecture

LBM function: diagnoses and checks bidirectional connectivity between MEP and MIP or

and relatively equal MEP. The function includes bandwidth throughput check, bit error

check. This function is similar to the ping function.

LTM function: identifies neighboring relationship sorting between MEP and MIP or and

relatively equal MEP. When system fault (such as linkage or equipment problem) or

forwarding planar loop takes place, it is possible the sorting relationship of MIP and / or

MEP does not go in accordance with the expectation. The disordered sorting relationship

can result in trouble location information.

IEEE 802.3ah:

IEEE 802.3ah is limited to single linkage (direct P2P connection) detect to realize

linkage-level OAM function. OAM can only be transmitted between two directly

connected devices and cannot be forwarded. IEEE 802.3 ah has been combined into

802.3-2005 as its Chapter 57.

The ZXDSL 9836 supports the following functions:

Remote looping: to provide data linkage-level looping function

There is content repetition in both OAM protocols of IEEE 802.1ag and IEEE802.3ah. But

to provide end-to-end Ethernet service management in a sense, the two protocols must

work together.



4.6 QoS

4.6.1 Service Stream Classification and Identification

Service stream classification:

It supports upstream service classification based on physical port and source MAC

address, destination MAC address, VLAN ID, VLAN priority (IEEE802.1D), Ethernet type

(such as IP, PPPoE, ARP/RARP), destination IP address, source IP address, IP type

(such as TCP, UDP, ICMP, IGMP), IP DSCP, TCP/UDP port. It also supports packets

in-depth check (check the first 96 bytes).

It supports 802.1D priority and service mapping.

Service stream identification:

It supports identifying upstream service with priorities based on stream classification. It

supports 802.1D subscriber priority identification reuse, addition and modification. It

supports ToS / DSCP priority identification modification.

It supports service priority ID configuration for subscriber interface.

4.6.2 Congestion Management

Queue scheduling:

It supports up / downstream service mapping to queues with different priorities and

scheduling according to 802.1D subscriber priority ID.

It supports implementing upstream service local scheduling according to OLT bandwidth

authorization. And PON port supports eight queues.

Scheduling algorithm supports SP / WRR / SP+WRR.

It supports NSI / USI queue number: 8 / 4.

Buffer management:



It supports buffer management and its buffer is exclusive for each user port.

Congestion avoidance mechanism:

It supports Tail-Drop algorithm.

4.6.3 Traffic Analysis and Integer

It supports status report DBA. It can realize up service stream speed limit through up

service stream scheduling according to OLT DBA authorization.

User-side Ethernet interface supports up/down service stream port speed limit.

It supports service stream speed limit based on source MAC address, destination MAC

address, VLAN ID, VLAN priority (IEEE802.1D), Ethernet type, destination IP address,

source IP address, IP type and IP DSCP, TCP/UDP port.

4.7 Multicast Functions

4.7.1 IGMP

IGMP Snooping:

IGMP Snooping is configured to snoop on IEEE 802.1 Bridge IGMP messages sent by

multicast router or by main machine which receives multicast for purpose to promote

multicast stream distribution on L2 networks.

IGMP Snooping includes IGMP Transparent Snooping and IGMP Snooping with Proxy

Reporting.

IGMP Transparent Snooping is to implement IGMP Snooping function without creating,

intercepting or modifying IGMP message.

IGMP Snooping contains three function sub-items:

Report restraint: To intercept and manage Report packets sent from IGMP main

machine and forward only when it is necessary



Leaving restraint: To intercept and manage Leave packets sent from IGMP main

machine and forward only when it is necessary such as when the last member in

multicast group is leaving

Query restraint: To intercept and manage Query packets

The system supports IGMP Version1 / Version2 / Version3.

IGMP Proxy:

IGMP Proxy, which contains one main machine interface and several router interfaces,

learns and forwards multicast data through IGMP. The main machine interface works as

IGMP main machine to start IGMP packets adding and leaving. Router interfaces work to

query user side. Main machine interface and router interfaces belong to different

sub-nets.

It supports IGMP Version1 / Version2 / Version3.

4.7.2 Multicast Control

Multicast VLAN:

MVLAN is the VLAN to bear multicast traffic. In MVLAN, multicast traffic forwarding is

under control of IGMP Snooping if the function is configured and executed. MVLAN can

be specialized or shared, or N:1 mode.

CAC (Channel Access Control):

It supports channel list and subscriber interface privilege list configuration, query and

storage.

It supports multicast CAC based on physical interface and logical VLAN (PVC / VLAN).

Interface CAC list application privilege includes denial, previewing and subscription.

It supports getting CAC multicast control privilege list information in dynamic method

from network management (in SNMP mode) SMS.

Multicast channel preview (PRV):



Based on CAC, it realizes preview privilege for subscribers who did not make a purchase.

It is used to configure previewing duration, previewing times per 24 hours and previewing

interval.

Multicast channel calling statistics (CDR):

CDR is the detailed multicast subscriber access information records including channels

that subscribers play, subscriber channel privilege, time stamp information, long-term

online and unprivileged subscribers statistics for commercial analysis and planning

purpose.

Channel Package:

It supports channel packages. The package is the combination of channels and every

program in these channels is configured with Permit or Preview privilege. One channel

can be configured to any package or packages with respectively independent privilege.

Package is configured to one specific subscriber interface as a result with specific

multicast access privilege. One subscriber interface can have several packages.

It supports channel packages based on physical interface and logical interface (PVC /

VLAN).

Multicast SMS (Service Management System):

SMS, in combination of NM, is a friendly visual management interface and is used to

configure multicast management information and control privilege information, CAC list

and CDR information.

SMS and NM are independent logically.

Fast Leave:

When a multicast subscriber is leaving the multicast group or switch off device after

program previewing, the device is able to stop copying and forwarding multicast stream

to the multicast subscriber.

Multicast channel prejoin:



Multicast channel prejoin function enables specified multicast group to send enquiry

packets to network side consistently. The prejoin is able to leading the multicast service

to the device consistently and so to decrease subscriber channel shift delay.

Multiple STBs:

There can be more than one STB in one subscriber interface. To avoid other STBs

play-on-demand breakage when one of them is leaving, the system needs to clarify if

there are other STBs working by recording relationship of STB address (MAC or IP) with

multicast group.

STBs can have different play-on-demand privilege although they are in one subscriber

interface. To avoid unprivileged STB playing certain programs, CAC must match STB IP

address and discard IGMP enquiry from unprivileged STB.

Subscriber interface multicast channel number limit:

This is used to limit subscriber number and access multicast group number thus

increasing multicast management and security.

Subscriber interface multicast service bandwidth check:

When a subscriber is joining in a multicast group, he need check bandwidth occupation.

If the unoccupied bandwidth cannot fulfill requirements of play-on-demand, the enquiry is

denied to ensure previous programs quality.

System level MVLAN multicast service bandwidth check:

When a subscriber is joining in a multicast group which is belong to one MVLAN, the

9836 need check bandwidth occupation based on preset bandwidth for the system level

MVLAN. If the unoccupied bandwidth cannot fulfill requirements of play-on-demand, the

enquiry is denied to ensure previous programs quality.

Multicast services pause:

Multicast service pause and recovery based on subscriber interfaces are applied to

payment delay subscribers or initial subscription application. It is to temporarily stop the

subscriber multicast service but not to cancel the subscriber configuration permanently.



General Leave All functions:

General Leave All functions solve the following problem:

After STB recovery, the previous programs played-on-demands keep unknown. So the

STB cannot leave fast and need wait for general check overtime. During this period, the

previous programs cannot be delivered. And if the subscriber plays a program at this

moment, it is possible that the play fails due to insufficient bandwidth.

Illegal multicast stream restraint:

It prohibits illegal multicast server establishment which interferes normal service

subscription.

4.8 VoIP

The ZXDSL 9836 supports built-in VoIP management module. It adopts H.248 protocol

or IMS SIP protocol to implement voice encoding/decoding (G.711，G.726，G.723.1，

G.729A/B, etc), fax (T.30, T.38), VoIP, and FoIP services under the control of SS or IMS.

The service includes basic service, supplementary service, Fax and Modem service.

The ZXDSL 9836 supports single IP and multiple IP allocation mechanism. Voice service

can use single IP which is same as NMS or be configured separately, the media stream

IP and signal stream IP can be different in voice service and can be captured dynamically

through DHCP Option60.

4.8.1 Voice processing protocol and encoding

4.8.1.1 H.248 protocol:

H.248/Megaco functions:

The ZXDSL 9836 implements VoIP services including voice and fax services between

PSTN and IP network or in the internal IP network through the control of the media

gateway controller on the media gateway. The ZXDSL 9836 supports the following

H.248/Megaco functions



IPv4 and smooth migration to IPv6

Media and call control functions

Temporary termination point for generating and transmitting RTP flows

POTS subscriber access

IP QoS analysis

Self-adaptive MGC overload control

Real-time statistics report

4K digital map

The fax and the modem support auto switch of voice to G.711 VBD mode

(complying with ITU-T Recommendation V.152)

Reporting DTMF signals via voice encoding

DTMF generation, detection, and forwarding process

Complies with ITU-T and ETSI standards.

− ITU-T H.248.1 gateway control protocol: V1/V2/V3, including H.248 Sub-series

− ETSI ES 283 002 Telecommunications and Internet converged Services and

Protocols for Advanced Networking (TISPAN);H.248 Profile for controlling

Access and Residential Gateways.

Complies with IETE standards.

Complies with YD/T 1292-2003.

4.8.1.2 IMS SIP:

The ZXDSL 9836 supports connecting with universal SIP servers or SS:

Supports connecting IMS network defined by 3GPP



Supports two-party and multiple party conference

Supports complementary services relevant to the switch hook

Supports UDP bearing

Complies with IETF and ETSI standards

Complies with YD/T 1522-2006

Voice signal coding and encoding:

Supports G.711 (A/U)

Supports G.729A/B

Supports G.723.1

4.8.2 Voice management module

Voice management functions:

The system provides functions including G.168 echo restraint, mute check and

compaction, comfort noise generation, adaptive jitter buffer VAD (Voice Activity

Detection), heartbeat, self-switching, hairpin and second time dialing.

Call management and control:

It provides DTMF check and building.

The system is able to receive and implement digital map sent by SS.

It supports identifying subscriber hookon, hookoff, hookflash or dialing events,

inspecting occupied lines and busy number dialing answer. Under the SS control, it

can send all types of signals such as dialing tone, ringing tone and ringing back

tone.

It supports voice signals and Fax / Modem signals recognization and operates

accordingly.



Resource control:

It supports reporting to SS equipment physical entity status change caused by

trouble, recovery or managing activity occurrence. It is able to report the termination

point is in or free of service operation.

It supports allocating related resources according to SS commands. It also supports

releasing current or prejoin resources according to SS enquiry.

Status control and troubleshooting:

It supports disconnection inspection caused by communication linkage fault, traffic

jam or SS fault. It is able to reconnect linkage after fault recovery or troubleshooting.

It supports reporting abnormal situation in process of event management to SS.

Synchronization and timing:

It supports synchronization and timing, it supports NTP V3.

Registration:

It supports registration and deregistration.

It supports dual homing MGC.

4.8.3 Other services

Besides basic voice service, the system also supports the following services:

Supplementary services under SS control:

It supports the following supplementary services:

Caller number display

Caller number display restrictions

No-answer call forwarding

Unconditionally call forwarding



Busy call forwarding

Cut-off service

Disturbance-free

Call restriction

Hotline services

A malicious call searching

Busy call-back

Call waiting

The three-party conversation

Voice conference

Distinctive ringing

Polarity reversal

Abnormal calls under SS control:

It supports:

Caller hookoff no-dialing

Caller hookoff dialing and called party hookon

Caller hookoff dialing number missing

Not to hang up after the call

Caller hookoff dialing the number that does not exist

Fax service under SS control:

Supports Fax services with Fax tone inspection functions.



Supports T.30 and T.38 protocols to provide IP Fax services under SS control.

Modem services under SS control:

Supports Modem tone inspection functions.

Supports Modem service realization in transparent mode to provide Modem service

under SS control.

4.8.4 Line Test (112)

Subscriber line test:

Subscriber line test includes infrared voltage, capacity, insulation resistance, loop

resistance / loop current and group tests.

Circuit line test:

Circuit line test includes dialing tone, ringing tone stream voltage, feeding voltage, and

bidirectional circuit tests.

4.8.5 Voice Quality Guarantee

The ZXDSL 9836 takes the following measures to ensure the voice service quality:

Echo canceling function (complies with G.165/G.168)

Voice activity detection (VAD) function

Comfortable noise generation (CNG) function

Packet loss concealment (PLC) function

Dynamic adjustment of jitter buffer

Tx/Rx gain control

The ZXDSL 9836 takes the following measures to isolate the VoIP flows and broadband

data flows to ensure the voice service quality:



Configures different VLAN for the VoIP media flows, signaling flows, management

flows, and broadband data flows

Configures different CoS for the VoIP media flows, signaling flows, management

flows, and broadband data flows

Configures different type of service (ToS) for the VoIP media flows, signaling flows,

management flows, and broadband data flows

Configures different differentiated services code point (DSCP) for the VoIP media

flows, signaling flows, management flows, and broadband data flows

4.9 IPv6 Function

As an AN, the ZXDSL 9836 meets the requirement for architecture and function defined

in Broadband Forum TR-177 and supports IPv6/IPv4 dual stacking function.

4.9.1 IPv6 Transparent Transmission

It supports IPv4 by default. It does not need to process IPv6 services but transparently

transmits IPv6 protocol and data. It does not sense the IPv4 and IPv6 attributes. This

characteristic enables the device in the current network support IPv6 service.

4.9.2 IPv6 Stateless Address Auto Configuration (SLAAC) Port Positioning

In SLAAC access mode typical of IPv6, IETF is working on draft-krishnan-6man-rs-mark

to help the BNG differentiate users. It inserts a Line Identification Destination Option (LIO)

in RS sent by the subscriber in the upstream direction and brings the subscriber

positioning information to Broadband Network Gateway (BNG). In the draft, the LIO

process of AN and BNG as well as packet encapsulation format are defined.

4.9.3 IPv6 DHCPv6 Port Positioning

In N:1 VLAN application scenario, to facilitate the BNG differentiate the subscriber,

DHCPv6 L2 relay agent is adopted in DHCPv6 interaction between the subscriber and

the BNG. The access device inserts an interface-id or remote-id in the upstream



DHCPv6 packets and sends it to the BNG. Format of interface-id and remote-id is

defined by the operators according to their requirements. The downstream DHCPv6

packets are forwarded to the subscriber after the interface-id and remote-id are deprived

in the access device.

4.9.4 IPv6 Source Guard

IP spoofing exist in IPv6oE access scenarios in which other IP address or services are

stolen or the network is forcibly accessed without obtaining configuration information

through DHCP. All of these deeds disturb uniform management of the operator, affect

services of legal users, and threaten the system security. By adopting the IPv6 Source

Guard technology, the ZXDSL 9836 can effectively prevent IP spoofing or malicious DoS

attack to improve the device security.

4.9.4.1 DHCPv6/ND Snooping

The IPv6 Snooping technology effectively prevents IP snooping of malicious users. IPv6

has two types of snooping method: single IPv6 address and IPv6 address suffix.

In DHCPv6 mode, the mapping relationship between the user port and the IP address is

established through DHCPv6 Snooping. In SLAAC mode, the subscriber sends RS to the

BNG after the link local address is automatically generated, the BNG returns Prefix

Information Option (PIO) to specify the IPv6 prefix allocated to the subscriber, the

subscriber generates a global unicast address according to the prefix and the link local

address. Through snooping DAD information, the AN can set up the mapping

relationship between the subscriber and the IP address to achieve ND Snooping in

SLAAC mode.

Through DHCPv6/ND snooping, the system establishes and maintains the DHCPv6/ND

Snooping binding table that includes subscriber’s MAC address, IPv6 address/IPv6

address prefix, lease time, VLAN-ID interface, etc. The DHCPv6/ND snooping

invalidates the items in the DHCPv6/ND snooping binding table according to the auto

lease time aging.



4.9.4.2 DHCPv6/ND Protection

Based on the DHCPv6/ND Snooping binding table, the IPv6 Source Guard technology is

achieved by binding the applied IPv6 address/IPv6 address prefix with the port. The

system analyzes the packets between the subscriber and DHCPv6 Server/Relay or ND.

Before the subscriber obtains the configuration information, the upstream packets are all

dropped except for the packets with the unspecified source IP address and FE80 prefix

or ND packets. Once the DHCPv6 Ack/RA packets are detected, bind the allocated IP/IP

prefix and subscriber’s MAC address to the user port to enable upstream packets

transmission and ensure the allocated IP address /IP address prefix and MAC address

are the same as these of the upstream data, if not, drop the packets. When the rental

period expires, cancel the binding and stop transmitting non-DHCPv6/RS upstream

packets.

4.9.5 IPv6 Multicast

The system supports IPv6 multicast. The control plane establishes the multicast

forwarding table through processing the MILD packets to implement L2 forwarding of the

data platform according to the multicast forwarding table. The process flows are shown in

Figure 4- 7.

Figure 4- 7 Schematic Diagram of ZXDSL 9836 IPv6 Multicast

IPv6 multicast uses MLD protocol which is different from IGMP for IPv4 but the same in

multicast control.



4.9.5.1 MLD Snooping

In the upstream direction, MLD Snooping deals with the MLD Report/Done packets sent

by the host, translates the subscriber VLAN to the multicast VLAN, forwards it to the

upper-layer router, and builds multicast group information. In the downstream direction,

MLD Snooping deals with the MLD Query packets transmitted by the specific router and

forwards them to the subscriber. Through setting aging time of the multicast group

member, the system deletes the subscribers with no response within a period to maintain

the L2 multicast forwarding table.

MLD Snooping with Proxy Reporting increases the report suppression, last leave, and

query suppression functions.

Report suppression : It intercepts, absorbes, and integrates the report messages

from the MLD host, and transmis the summarized MLD report messages to the

upstream interface where the multicast router is located, such as when the first

subscriber joins the multicast group and when the multicast group corresponds to

the MLD query.

Last leave : It intercepts, absorbes, and integrates the report messagess from the

MLD host, and transmis the summarized MLD leave messages to the upstream

interface where the multicast router is located, such as when the last subscriber

leaves the multicast group.

Querey suppression : It intercepts and processes the MLD query information.

Specified MLD queries are not transmitted to the user port. The general MLD

querey message is transmitted to the user port through relay mode when the user

port receives at least one multicast group.

4.9.6 MLD Proxy

In MLD Proxy mode, the system takes place of the router to periodically send MLD Query

packets to the subscriber and takes place of the subscriber to respond to the Query

packets from the upper-layer router.

MLD Proxy includes MLD Host and MLD Router. MLD Router runs on the interfaces on

the user side to terminate the report messages of the host. MLD Host runs on the



interfaces on the network side and responds to the query packets of the multicast router.

MLD Proxy only forwards the join packet of the first subscriber and the leave message of

the last subscriber in the same multicast group, responds to the query packets of the

router, and takes places of the router to periodically send the query packets.

4.9.7 IPv6 Management

The same as the application in IPv4 network, the system possesses the general network

management capability in IPv6 network environment and is able to visit and control

through multiple protocols.

The system supports IPv4 and IPv6 dual stack. The applications above the TCP/UDP

layer are invisible. The system can configure the IPv4 and IPv6 addresses. The

application layer determines whether to use IPv4 protocol or IPv6 protocol according to

the type of the IP address. Under each condition, the characteristics of the application

layer remain the same. The services and network management supported by the system

can coexist under the dual stack.

4.10 Security

4.10.1 xPON Interface Data Security

xPON system transmits downstream in mode of broadcast and it is easy for a malicious

subscriber to intercept other subscribers information. To increase subscribers’ privacy, it

supports downstream:

Triple Churning

AES-128

4.10.2 Port Location

It identifies subscriber service stream channel and port, and implements port mapping

with each port numbered. The number can be used for AAA server to protect subscriber

accounts from theft and used for subscriber location locking.



Layer2 DHCP relay agent:

Layer2 DHCP relay agent can change DHCP packets relay agent options (Option82)

defined by RFC3046 but not Giaddr domain.

It supports various formats, including TR-101 flexible format and multiple vendor

specified formats. It is configurable on port basis and VLAN basis.

PPPoE intermediate agent:

PPPoE intermediate agent adds port ID information to frames in PPPoE discovery

phase.

It supports various formats, including TR-101 flexible format and multiple vendor

specified formats. It is configurable on port basis and VLAN basis.

SVLAN:

SVLAN is used to encapsulate 802.1q protocol tag before 802.1q protocol tag. One layer

encapsulation is to identify customer network and the other is to identify service provider

network and it can be extended to realize subscriber line identification.

VBAS:

It reports subscriber practical slot / port number to BRAS through VBAS protocol.

It is in compliance with China information industry standard - VBAS Protocol Standard.

4.10.3 Traffic Restraint

Broadcast Storm Restraint:

It supports broadcast / flood restraint. It will discard broadcast stream when broadcast

stream including unicast and multicast exceeds the threshold the subscriber configures.

This decreases the broadcast occupation ratio in data stream to a reasonable level and

can avoid network traffic jam and ensure normal operation.

Its realization is based on port configuration.

IGMP/MLD packets restraint:



It supports IGMP/MLD protocol packets restraint based on subscriber port to limit system

protocol packets access in one unit of time. This can prevent malicious attack and

provide system security.

DHCP protocol packets restraint:

It supports DHCP protocol packets restraint based on subscriber port to limit system

protocol packets access in one unit of time. This can prevent malicious attack and

provide system security.

CPU interface traffic restraint:

It supports storm control for the NM channel to control packets traffic which accesses

management system to ensure system light load under malicious attack.

4.10.4 MAC Filter

MAC address learning number limit:

It supports limiting MAC address learning number. If the learned MAC address number is

over configured threshold, new MAC address will be ignored and its packets will be

discarded unless there is MAC address which is aging.

Subscriber interface MAC address binding:

The subscriber interface with MAC address bound discards packets whose source

address is not this MAC address.

It only controls interface access side.

MAC address anti-migration (anti-cheating):

It prohibits subscriber interface learned MAC address to migrate to other subscriber

interfaces before aging.

It prohibits uplink port learned MAC address to migrate to other subscriber

interfaces.

MAC address filtering:



It supports MAC address blacklist and whitelist.

Blacklist: It discards the data stream if its MAC address is listed in blacklist. For

those are not listed in blacklist, data streams are processed for next-step switching

management. It supports source and destination MAC address differentiation.

Whitelist: It discards the data stream if its MAC address is not listed in whitelist. For

those are listed in whitelist, data streams are processed for next-step switching

management. It supports source and destination MAC address differentiation.

4.10.5 IP Filtering

MAC-Forced Forwarding (MFF):

MAC-Forced Forwarding is in compliance with RFC4562. MAC-Forced Forwarding uses

a feature of proxy Address Resolution Protocol (ARP) to stop MAC address resolution

between clients. Without MAC-Forced Forwarding, the Ethernet Access Nodes in a

network forward valid ARP messages to the requested destination. With MAC-Forced

Forwarding, Ethernet Access Nodes intercept all ARP messages from clients and send

proxy ARP replies on behalf of the client’s Access Router. This stops the clients from

learning the MAC addresses of any other devices, and directs all traffic from the client

directly to the Access Router.

Subscriber interface IP binding:

IP address binding is to bind IP address with a specific subscriber interface. This can limit

subscriber access for only subscribers with their IP address bound with the interface can

access networks through the interface. This prevents illegal subscriber access through IP

address copy or theft.

DHCP Snooping:

In IPoE access scenario, the activities of using IP illegally, stealing service or forcefully

accessing network without DHCP configuration severely interfere unified management of

carriers and services for legal subscribers. It brings great threat to subscriber and system

security. DHCP Snooping technology ensures security through establishing and

maintaining DHCP Snooping binding list to filter unbelievable DHCP packets. The DHCP



Snooping binding list includes unbelievable subscriber MAC address, IP address, lease

period, VLAN ID interface information. The technology can manage entities aging

through lease period.

DHCP Source Guard:

DHCP Source Guard technology realization depends on DHCP Snooping binding list. It

can bind the applied IP addresses with the interface and manage filtering based on

source IP addresses. This can effectively prevent IP address cheat and malicious

subscriber DOS attack thus increasing the system and subscriber security.

DHCP Spoofing:

UNI prohibits subscribers to set up DHCP Server illegally. All upstream protocol packets

which should be sent by DHCP Server will be discarded, such as OFFER-type protocol

packets.

4.10.6 ACL

UNI ACL:

Supports frame filter and restraint based on physical interfaces, source/destination

MAC address, VLAN ID, Ethernet type.

Supports frame filter and restraint based on source/destination IP address,

source/destination TCP or UDP interface, protocol type.

Supports illegal frame and illegal multicast filter such as customer-side multicast

stream filter.

NM channel ACL:

NM channel ACL is specialized in NM channel access policy. It supports IP address

whitelist configuration. Only main machine whose IP address is listed in the whitelist can

manage equipment. Management commands from other main machines are denied.



4.10.7 Interface Security

Customer interface loop inspection:

If the physical loop exists in self-organized network in subscriber interface, the special

packets sent by the system can be back looped and snooped. Then the system blocks

the subscriber interface and configures this interface status to be loopback shut down.

This is different from the disabling by executing NM commands. At the same, it sends

alarm report to EMS.

UAPS (Uplink Auto Protection Switching):

UAPS adopts linkage hot backup mechanism for P2P application. Only one main linkage

is active and all services are beared on it. The backup/standby linkage is in IDLE status

and keeps real-time analyzing on main linkage working status.

When main linkage is broken due to physical layer signal loss such as fiber break,

disconnection and optical module damage, the backup/standby linkage inspects

immediately and automatically replaces to be new main linkage. At the same time, all

services move to this new linkage. An automatic protection alternation is successfully

accomplished.

When the faulty linkage is recovered, the system configuration decides if services will

return to it.

4.10.8 802.1x

IEEE 802.1x takes IEEE 802 LAN as its basic architecture and defines authorization and

authentication modes for equipment connected with a specific interface in LAN with P2P

characteristics. It can limit unauthorized subscribers or equipment access the interface to

enjoy access services supplied by LAN based on Client/Server access control and

authentication protocol. Before acquiring services supplied by LAN, 802.1x protocol must

implement subscriber/equipment authentication.

Interface role:



The system interface supports authenticator and supplicant role-play and does not

support combining authenticator with authentication server. The authentication server

uses external Radius Server.

EAPOL protocol:

EAPOL is an encapsulation technology to exchange EAP packets between authenticator

and supplicant in LAN.

It supports 802.3 Ethernet EAPOL frame format. It supports priority ID and pure EAPOL

frames. It supports EAPOL frame exchanged between authenticator and supplicant and

EAP over Radius exchanged between authenticator and authentication server.

Interface network access control:

Interface network access control is for P2P connection. It supports authenticator PAE,

supplicant PAE, interface in and out of control, control interface authentication aging and

logoff mechanism.

4.11 Network Management

4.11.1 Management modes

SNMP:

It is in compliance with SNMP standards and provides SNMP V1 and V2c standards

support. It supports MIB II.

Telnet management:

It supports Telnet management interfaces and four Telnets connected to the system

synchronically.

It supports Telnet Agent to log in other equipment for management and maintenance

purpose through Telnet.

Console local management:



It supports console management interface and man-machine commands are the same to

Telnet commands in aspects of execution and functions.

SSH management:

It supports SSH (V1, V2) to encrypt all transmission data to avoid person in-between

attack and DNS and IP cheat. Since the transmission data is compressed, the

transmission speed is increased.

OAM:

It supports OAM functions regulated in IEEE802.3-2005 Clause 57. It supports extended

OAM management defined in China Telecom EPON equipment technology regulation.

OMCI：

It supports OMCI functions regulated in ITU-T G.984.4/G.988 to manage GPON

configuration.

4.11.2 Fault Management

System onpower self-inspection:

It provides onpower self-inspection function to test core devices. If the self-inspection

fails, the system will not start.

Crash files:

The system records information of the latest CPU register running status, main service

management chip running features, and latest operation system running status. The

information is recorded for deeper analysis.

System log:

System log records system events such as subscriber logon events and system restart

events.

System operation log:

It records history of system operation through SNMP or Telnet/CLI.



System remote reset:

It supports remote reset. The equipment reset adopts hard reset method with key parts

completely reset. The reset is similar to remote power off restart.

Configuration files recovery:

It supports configuration file local/remote up/download. This function enables

configuration file backup and recovery.

Configuration file automatic saving:

It supports periodically saving configuration files to avoid configuration modification

missing.

Dying Gasp:

It sends Dying Gasp alarm to EMS through SNMP or CTC specific extended OAM, when

the system is power OFF.

4.11.3 Performance Management

Interface traffic statistics:

It records the real-time interface traffic account including both input and output directions.

CPU occupation ratio statistics and alarm:

It supports CPU occupation dynamic inspection and static check.

Memory usage ratio statistics and alarm:

It supports memory usage dynamic inspection and static check.

4.11.4 Security Management

Username and password management:

It implements privilege management for login user and password to realize user and user

operation authorization. It provides VIP function.



Managing user local/remote authentication:

It supports managing user local authentication. All authentication information is saved

locally.

It supports managing user remote authentication. User information is sent to Radius

server through Radius client for authentication purpose. No user information is saved

locally.

Multiple system versions support:

It supports saving multiple system versions locally and backwards when version

download fails.

Management channel real-time breaking check:

It supports real-time checking the connectivity with NM server to ensure management

linkage working normally.

4.11.5 Modem Remote Management

It supports ADSL2/2+ and VDSL2 Modem remote management.

Configuration management:

PVC connectivity and encapsulation configuration and management

IP address configuration and management

DHCP and NAT configuring switch function and DNS configuration

Factory configuration recovery

Troubleshooting:

Check CPE detailed information including CPE firmware version and software

version, CPE factory, set chip supplier, CPE interface type, CPE service

configuration, customer side interface information such as status, working rate and

mode.



Remote reset and restart

Management methods:

SNMP PROXY

Telnet PROXY

HTTP PROXY

4.12 Environment Detection

Temperature alarm:

The system built-in temperature sensor can send temperature alarm to EMS when

working temperature is over configured threshold. The alarm informs system manager

that working environment has changed and equipment should not keep on running.

Fan detecting and controlling:

In dynamic mode, fan control card is able to detect fan rotating speed automatically in the

basis of ambient temperature, and provide real-time adjusting on it.

Dry contacts detecting (externally connected with environment detecting device):

The system supports four Boolean switch detecting. Working together with external

environment detecting device, it can realize various environment signals alarm report

related with power, heat exchanger, smog sensor, doorset sensor, and lightning

protection device.

Dry contacts detecting interface is the 6-pin interface located on main control card.

Console RJ45 interface can also connect with ZTE environment detecting device such as

EPM/EPS. It shares lines with Console, one part of threads can be used for Console,

another part can be used to transmit detecting data to EPM/EPS. For detailed

information, please see EPM/EPS operation manual.

Built-in battery management and intelligent power-saving policy:



PWAM or PWAME card is able to provide backup power supply interface with which -48

V backup battery is connected.

In typical scenarios, battery is deployed as backup power. When 110/220V AC is in

working, it supplies power for 9836 and charges battery. Once 110/220V AC break down,

battery will supply power for 9836 in very short time.

When battery is supplying power, the system is able to activate intelligent power-saving

policy and prolong time of voice services endurance by shutting off broadband services

when battery voltage has fallen down below preconfigured safe value.

When battery is applied, whether serious service modules are power on are configurable.

Battery alarm management:

Connect Li/Fe batteries such as ZXA10 4810 through Console interface of main control

card. It supports following three types of alarms:

Input power OFF alarm: The external power supply is off and the Li/Fe battery

begins to supply power.

Low battery voltage alarm: In Li/Fe battery power supply mode, battery voltage is

below the threshold which is determined by battery and cannot be configured.

Battery trouble alarm: Li/Fe battery is faulty.



5 Application Mode

5.1 Network Architecture

The end user requirements have changed from pure voice communication to multi-play

integration of voice, video, data and pictures. The newly emerged value-added services

such as IPTV and network phone call are having higher requirements in terms of network

bandwidth, QoS and security. The trend, cable withdrawal and fiber extension, is a

challenge for carriers in network especially access network construction. Both carriers

and equipment producers are taking efforts to fulfill variation and customization

requirements by introducing new technology and taking a maximum use of current

network resources as a condition. The ZXDSL 9836 is right the solution for such

application.

The ZXDSL 9836 is multi-service integration access equipment based on IP. It is working

as an all-service access platform. It can be used as traditional DSLAM as well as MDU or

AG in FTTB/C and FTTCab application scenario to provide various network architecture

modes such as xPON or GE network-side interfaces, VDSL2/ADSL2+/SHDSL/FE and

POTS network-side interfaces.

The following sections introduce the ZXDSL 9836 application in network architecture with

P2MP and P2P modes.

5.1.1 P2MP Network

Compared with P2P architecture, P2MP takes advantages in respect of network cost

saving such as feeding fiber saving, power saving, fast and flexible network deployment

and high standardization. Its maximum transmission distance can be 20 km with xPON

technology introduction. It supports multiple-level splitting configuration which enables

great flexibility in network deployment.



Figure 5- 1 shows typical application of the ZXDSL 9836 in FTTC/Cab scenario. It adopts

GPON, EPON or 10GEPON to uplink and xDSL for subscriber access to realize far away

subscriber access.

Figure 5- 1 ZXDSL 9836 Application in P2MP Network (FTTC/Cab)

In FTTC and FTTCab scenarios, use the ZXDSL 9836 to differentiate coverage. The

ZXDSL 9836 can provide different bandwidth for different coverage such as 1.5 km, 500

m and 300 m radius coverage. It qualifies both indoor and outdoor installation methods

and can be installed in community central equipment room as well as in greenbelt or on

wall mounted poles to save network construction cost.

In P2MP network architecture, the ZXDSL 9836, as MDU equipment, connects with PON

equipment OLT to realize multi-service integration. Typical application in FTTC / FTTCab

scenario can provide subscribers with wide bandwidth and multiple services as well as

network protection.

5.1.2 P2P Network

P2P network qualifies with private subscriber bandwidth, small convergence rate and

flexible network architecture. It not only fulfills top-end subscriber high bandwidth

requirements but also provides enough protection and security. It mainly serves densely



populated community, VIP customers with strict requirements of privacy protection or

commercial customers with broad band and high value requirements.

P2P system transmission distance can be as long as 70 km. So it is able to solve POP

moving down problem in Cable Withdrawal and Fiber Extension project. It allows access

node getting to subscribers as close as possible and this can promote services with

higher bandwidth.

Figure 5- 2 ZXDSL 9836 Application in P2P Network

In P2P network architecture, the ZXDSL 9836 can be installed in street cabinet. It is

connected to subscriber homes through twisted pair or Cat 5 cable. It supplies

subscribers with various access services including broadband, VoIP and IPTV. It uplinks

a network switch or a router through optical fiber in the mode of P2P to accomplish

service convergence.



5.2 Service Type

5.2.1 Broadband data Service and Network

In both P2MP and P2P network architecture, one ZXDSL 9836 is able to support 192

ADSL2/2+ subscriber lines, 192 VDSL2 subscriber lines, 96 SHDSL.bis subscriber lines

or 96 FE subscriber lines. It also supports subscriber cards mixed-plugging. A subscriber

card can be plugged in any subscriber slot. It provides subscribers with high-speed

Internet broadband data services as well.

Figure 5- 3 ZXDSL 9836 Data Service Application

The ZXDSL 9836 supports flexible configuration of access modes. It can fulfill data

access requirements of residential inhabitants or commercial customers by providing 100

Mbps bidirectional high-speed Internet data service.



5.2.2 VoIP Service and Network

Figure 5- 4 ZXDSL 9836 VoIP Service Application

The

ZXDSL 9836 contains a built-in VoIP processing unit which supports PSTN voice service

with POTS cards.

Internal IAD method: It is better used in newly established nodes to provide

subscribers with voice and broadband package service through built-in voice

management module.

External IAD method: It is better used for old nodes development or network

capacity extension to provide broadband access service for current IAD

subscribers.

VoIP service adopts highest priority and strict scheduling policy to decrease forwarding

delay and improve service experience.



5.2.3 Video Service and Network

Figure 5- 5 ZXDSL 9836 IPTV Service Application

The ZXDSL 9836 features powerful QoS and multicast control and transmission

capability. It not only provides operational multicast and unicast control technologies but

also brings subscribers with vivid view enjoyment.

It is recommended to set the ZXDSL 9836 as multicast control point. On one hand, it

decreases workload of routers or BRAS for multicasting. On the other hand, it can control

subscribers privilege precisely, decrease multicast delay and increase service quality.

5.2.4 DDN Service and Network

The ZXDSL 9836 is a multi-service integration platform which is able to provide multiple

accesses. With SHDSL cards, 9836 is able to migrate traditional services based on

copper formerly, such as DDN, from PSTN network to PON network.



Figure 5- 6 ZXDSL 9836 DDN Service Application

The ZXDSL 9836 is able to support CESoPSN (structured) or SAToP (non-structured),

encapsulate users’ TDM service in IP packets and transport them over PON network. On

the other side of backbone, MSAN or other devices are able to de-encapsulate them, and

send TDM service to the destination. In downstream, the ZXDSL 9836 is able to

de-encapsulate the CES packets to TDM data and transport them to users.

5.2.5 Triple-play Service and Network

The ZXDSL 9836 is a multi-service integration platform which is able to provide

triple-play service and gets payoff in maximum.



Figure 5- 7 ZXDSL 9836 Triple-play Application

The ZXDSL 9836 is a multi-service integrated platform with the support of data, voice

and video services. It realizes integration of different network layers. These features

enable carriers to decrease network construction, operation and maintenance cost and to

promote network intelligence and fast response service.



6 Technical Specifications

6.1 Equipment Specifications and Environment Indices

Table 6- 1 ZXDSL 9836 Specifications

Parameter Value

Dimensions240 mm x 482.6 mm x 132.9 mm (Depth x Width xHeight)

Weight 10.3--12 kg (full configuration)

Power consumption

192-line VDSL2: 216.6 W (50% subscribers active,profile 17a, tested in distance of 750m, DC powersupply)

192-line ADSL2/2+: 155.7 W (50% subscribersactive, tested in distance of 3000 m, DC powersupply)

384-line POTS: 170.0W (25% narrowbandsubscribers off-hook working, tested in short-loopmode, DC power supply)

192-line ADSL2/2+ and 192-line POTS: 313.2 W(100% broadband subscribers active, tested indistance of 3000m; 30% narrowband subscribersoff-hook working, tested in short-loop mode, DCpower supply)

Notes: Above power consumption is based on thetest with Ethernet (Optical * 2) uplink. If Ethernet(Electric * 2) uplink is configured, powerconsumption has an decrease of 2.0W in total. IfEPON(Optical * 1) uplink is configured, then powerconsumption has a decrease of 2.1W in total. If10GEPON uplink is configured, powerconsumption has an increase of 1.2W in total. IfGPON uplink is configured, power consumptionhas a decrease of 0.3W in total.



Parameter Value

Heat ventilation Built-in speed-adjustable, active heat ventilation

Power supply

DC working voltage: - 48 V DC, ranging from – 40V DC to -57 V DC

AC working voltage: 110V AC / 220 V AC, rangingfrom 88 V AC to 290 V AC, and high voltage DCpower input ranging from 130 to 380V DC

Application environment &installation method

Indoor or outdoor installation, rack, indoor oroutdoor closure mounting

Table 6- 2 ZXDSL 9836 Environment Indices

Parameter Value

Environment temperature -30ºC - 60ºC

Environment humidity 5% - 95% (no condensation)

Cleanliness

Dust with the diameter of more than 5um andconcentration of less than 3 x 104 particles / m3 ,and non electrical conductivity, non magneticconductivity and non corrosive

Atmospheric pressure 70 – 106 Kpa

6.2 Interface Indices and Parameters

The ZXDSL 9836 provides various external interfaces as following tables list.

Table 6- 3 ZXDSL 9836 ADSL2/2+ Interfaces

Parameter Value

Standards complied ITU-T G.992.3, G.992.5 and ANSI T1.413

Port number per card 32

Port transmission rateMaximal upstream rate: 1 Mbps

Maximal downstream rate: 24 Mbps

The maximum transmissiondistance

6.5 km

Cable type Twisted cable



Parameter Value

Spectrum occupationUpstream frequency: 30 kHz – 138 kHz

Downstream frequency: 138 kHz - 2.208 MHz

Modulation technology DMT (Discrete Multi-Tone) modulation

Table 6- 4 ZXDSL 9836 VDSL2 Interfaces

Parameter Value

Standards complied ITU-T G.993.2, G.992.1, G.992.3, G.992.5

Port number per card 32/24/16

Port transmission rate VDSL2 profiles 30a, downstream rate: 100 Mbps


Backward compliant with ADSL2/2+


Frequency occupation Frequency range division defined by 993.2

Modem technology DMT (Discrete Multi-Tone) modulation

Table 6- 5 ZXDSL 9836 SHDSL Interfaces

Parameter Value

Standards complied ITU-T G.991.2, ETSI 101 524

Port number per card 16 (SHDSL.bis)

Port transmission rate 5.69Mbps over 2-wire, 22.76Mbps over 8-wire


6.5 km


Frequency occupation Frequency range division defined by 991.2

Modem technology TC-PAM16, TC-PAM32

Table 6- 6 ZXDSL 9836 POTS Interfaces

Parameter Value

Standards complied ITU Q552

Port number per card 64

Port transmission rate 64k bit/s



Parameter Value


5.5-6 km

Cable type Twisted pair

Codec PCM

Protocol TDM

Table 6- 7 ZXDSL 9836 Ethernet Megabit Interface (SNI and UNI)

Parameter Value

Interface name 100BASE-Tx100BASE-Fxsingle- mode

100BASE-Fxmultiple-mode

Standardscomplied

IEEE 802.3u IEEE 802.3u IEEE 802.3u

Interface type RJ-45 LC LC

Port number percard (SNI)

2 / /

Port number percard (UNI)

14+2(ETCD) 12(ETCF) 12(ETCF)

Interfacetransmission rate

Self-adaptive, 10 /100 Mbps

Full-duplex, 100Mbps

Full-duplex, 100Mbps

The maximumtransmissiondistance

100 m9 / 125 umsingle-mode fiber:15 km

62.5/125ummultiple-modefiber: 2 km

Cable / fiber typeCat 5 twistedcable or above

LD LD

Central wavelength

/ 1310 nm 1310 nm

Opticaltransmissionpower

/ -8 dBm - -14 dBm -23.5 dBm

Extinction ratio / 8.2 dB 8 dB

Maximumreceivingsensibility

/ -31dBm -29 dBm



Table 6- 8 ZXDSL 9836 Ethernet Gigabit Interface (SNI and UNI)

Parameter Value

Interface name 1000BASE-Tx 1000BASE-Lx 1000BASE-Sx

Standardscomplied

IEEE 802.3ab IEEE 802.3z IEEE 802.3z

Interface type RJ-45 LC LC

Port number percard (SNI)

2 2 2

Port number percard (UNI)

2(ETCD) 2(ETCF) 2(ETCF)

Interfacetransmission rate

Self-adaptive,10/100/100 Mbps

1000 Mbps 1000 Mbps

The maximumtransmissiondistance

100 m9/125 umsingle-mode fiber:10 km

62.5/125ummultiple-modefiber: 275 m；

50/125ummultiple-modefiber: 550 m

Cable / fiber typeCat 5 twistedcable or above

LD LD

Centralwavelength

/ 1310 nm 850 nm

Opticaltransmissionpower

/ -9.5 dBm -9.5 dBm

Extinction ratio / 8.2 dB 9 dB

Maximumreceivingsensibility

/ -31 dBm -17 dBm

Table 6- 9 ZXDSL 9836 GPON Optical Interfaces

Parameter Value

Plug type SC / PC

PON number 1 or 2

Fiber type Single-mode fiber



Parameter Value

Wave lengthTransmission end: 1310 nm (PON interface)

Receiving end: 1490 nm (PON interface)

PON interface standards ITU-T 984.x

Optical interface receivingrate

2.488 Gbps

Optical interface sendingrate

1.244 Gbps

Transmission wave lengthrange

1260 - 1360nm

Transmission end rootmean square spectral width

< 1mn (-20 dB)

Average output opticalpower

Minimum: 0.5dBm, Maximum: 5dBm

optical power while thegenerator is in outputswitch off status

< -45 dBm

Extinction ratio > 10 dB

Receiving wave lengthrange

1480 – 1500 nm

Receiver sensibility Better than -28 dBm

Linkage budget 28dB

Receiver full optical power Better than -8 dBm

Optical linkage length 20 km

Table 6- 10 ZXDSL 9836 EPON Optical Interfaces

Parameter Value

Plug type SC / PC

PON number 1 or 2


Wave lengthTransmission end: 1310 nm (PON interface)

Receiving end: 1490 nm (PON interface)

PON interface standards IEEE802.3-2005 1000BASE-PX10/20

Optical interface receiving 1.25 Gbps



Parameter Value

rate


1.25 Gbps


Minimum: 1260 nm；Maximum: 1360 nm


< 3 nm

Average output opticalpower

Minimum: -1 dBm；Maximum: +4 dBm

optical power while thegenerator is in outputswitch off status

Maximum: -45 dBm

Extinction ratio > 9 dB

Receiving wave lengthrange

Minimum: 1480nm；Maximum: 1500nm

Receiver sensibilityBetter than -28 dBm (Test conditions: [email protected] Gbps)

Linkage budget > 26 dB

Receiver full optical power Minimum: -3 dBm

Receiver damage threshold 4 dBm

Optical linkage length Maximum: 20 km

Table 6- 11 ZXDSL 9836 10GEPON Interfaces

Parameter Value

Plug type SC / PC (SFP+)

PON number 1 or 2


Wave length

Transmission end: 1310 nm (10/1G asymmetric) or1270 nm (10/10G symmetric)

Receiving end: 1577 nm (10/1G asymmetric or10/10G symmetric)

PON interface standards IEEE 802.3av 10GBASE-PRX30/PR30



Parameter Value

Optical interface receivingrate

10.3125 Gbps


1.25 Gbps (10/1G asymmetric)

10.3125 Gbps (10/10G symmetric)


1260~1360 nm (10/1G asymmetric)

1260~1280 nm (10/10G symmetric)


1 nm

Output optical power0.6~5.6 dBm (10/1G asymmetric)

4~9 dBm (10/10G symmetric)

Side mode suppressionmode

Minimum: 30 dBm

Extinction ratio> 9 dB (10/1G asymmetric)

> 6 dB (10/10G symmetric)

Receiving range 1574~1580 nm

Receiver sensibilityBetter than -28 dBm (10/1G asymmetric)

Better than -29 dBm (10/10G symmetric)

Receiver full optical power Minimum: -8 dBm

Optical linkage length More than 20 km

6.3 Key Technical Specifications

Table 6- 12 ZXDSL 9836 Key Technical Specifications

Parameter Value

VLAN list 4K

Q-VLAN ID，C-VLAN ID，S-VLAN IDrange

1 – 4094

VLAN translation list 2 K

Multicast list 2 K

MVLAN number 4

MAC address list capacity 4 K

MAC address number limit 1- 511 / port



Parameter Value

ACL 1K

IGMP joining delay < 15 ms (single route)

IGMP leaving delay < 15 ms (single route)

System start time Default: < 3 minutes

MTBF 150000 hours

MTTR 30 minutes

6.4 Indicators

Table 6- 13 ZXDSL 9836 Indicators

Indicator Picture Status Description

Powercard

Powerindicator-RUN

GreenON

Power normal

RedON

Power fault

OFF Power OFF

Fan cardAlarmindicator-ALARM

RedON

Fan fault

OFFFan normalworking

Maincontrolcard

Runindicator-RUN

GreenON

Equipmentfault

OFFEquipmentrunning fault

FLASHEquipmentnormalworking

Powerindicator-PWR

GreenON

Power normal

OFF Power OFF




Optical linkageindicator-L1

GreenON

Opticallinkagenormal

GreenFLASH

Trafficthroughopticalinterface

GreenOFF

Optical linkOFF

POTS orCOMBOsubscribercard

Runindicator-RUN

GreenON

Normalrunning

OFF Running fault

Alarmindicator-ALARM

RedON

Fault alarm

OFFNormaloperation

Hookon/offindicator-HOOK

GreenON

Hookoffsignal

OFFNo hookoffsignal

Ethernetsubscribercard

Interface linkageindicator (RJ45)

GreenON

Normallinkage

GreenOFF

Disconnection

Interface datareceiving andsending indicator(RJ45)

YellowFLASH

Data throughEthernetelectric port

YellowOFF

No datathroughEthernetelectric port

OFFNormaloperation

Interface linkageindicator

GreenON

Normallinkage




OFF Disconnection



7 Glossary

Table 7- 1 Glossary

Abbreviations Full Characteristics

ACL Access Control List

AES Advanced Encryption Standard

Alloc-ID Allocation Identifier

AN Access Network

ANI Access Node Interface

ARC Alarm Report Control

ARP Address Resolution Protocol

ATM Asynchronous Transfer Mode

AVC Attribute Value Change

BAS BAS Broadband Access Server

BSP Board Support Package

BW Bandwidth

CAC Channel Access Control

CAR Committed Access Rate

CATV Community Antenna Television

CDR Call Detail Record

CES Circuit Emulation System

CLI Command Line Interface

COS Class of Service

CRC Cyclic Redundancy Check

CVLAN Customers VLAN

DBA Dynamic Bandwidth Allocation

DBR Deterministic Bit Rate

DBRu Dynamic Bandwidth Report upstream

DSL Digital Subscriber Line

DTMF Dual Tone Multi-Frequency

EDFA Erbium Doped Fiber Amplifier




EMS Element Management System

EPON Ethernet Passive Optical Network

ERP Ethernet Ring Protection

FE Fast Ethernet

FEC Forward Error Correction

FTP File Transfer Protocol

FTTB Fiber to the Building

FTTB/C Fiber to the Building/Curb

FTTBusiness Fiber to the Business

FTTC Fiber to the Curb

FTTCab Fiber to the Cabinet

FTTH Fiber to the Home

GCP Gateway Control Protocol

GE Gigabits Ethernet

GEM GPON Encapsulation Method

GFP Generic Framing Procedure

GPM GPON Physical Media (Dependent)

GPON Gigabit Passive Optical Network

GTC GPON Transmission Convergence

GUI Graphical User Interface

ICMP Internet Control Message Protocol

IMS IP Multimedia Subsystem

IP Internet Protocol

HDTV High Definition TV

HSI High Speed Internet

HSIA High Speed Internet Access

HW Highway

IP Internet Protocol

IPTV Internet Protocol Television

ITU International Telecommunication Union

L2 Layer 2




L3 Layer 3

LACP Link Aggregation Protocol

LAG Link Aggregation

LAN Local Area Network

MAC Media Access Control

MDU Multi-Dwelling Unit

MIB Management Information Base

MPLS Multi-Protocol Label Switching

MSAN Multi-Service Access Network

MTU Multi-Tenant Unit

NAT Network Address Translation

NGN Next Generation Network

NE Network Element

NMS Network Management System

OAM Operations, Administration and Maintenance

OAN Optical Access Network

ODN Optical Distribution Network

OLT Optical Line Termination

OMCC ONU Management and Control Channel

OMCI Open Manage Client Instrumentation

ONT Optical Network Terminal

ONU Optical Network Unit

OSE Operation System Encapsulation

OSS Operation Support Subsystem

PCM Pulse Code Modulation

PIM-SM Protocol Independent Multicast - Sparse Mode

PIR Peak Information Rate

PLC Planar Light wave Circuit

PON Passive Optical Network

Port-ID Port Identifier

POTS Plain Old Telephone Service




PSTN Public Switched Telephone Network

QoS Quality of Service

RARP Reverse Address Resolution Protocol

RR Round Robin

SBU Single Building Unit

SCB Single Copy Broadcast

SDH Synchronous Digital Hierarchy

SDTV Standard Definition TV

SFP Small Form-Factor Pluggable

SIR Sustained Information Rate

SLA Service Level Authentication

SN Serial Number

SNMP Simple Network Management Protocol

SNI Service Node Interface

SP Service Priority

SP Strict Priority

SS Soft Switch

STB Set Top Box

STP Spanning Tree Protocol

SVLAN Service VLAN

TC Transmission Convergence

TCP Transmission Control Protocol

T-CONT Transmission Container

TTL Transistor To Transistor Logic

UDP User Datagram Protocol

UNI User Network Interface

VAS Value-Added Services

VC Virtual Channel

VCC Virtual Channel Connection

VCI Virtual Channel Identifier

VLAN Virtual Local Area Network




VoD Video on Demand

VoIP Voice over Internet Protocol

VP Virtual Path

VPC Virtual Path Connection

VPI Virtual Path Identifier

VPLS Virtual Private LAN Services

VPN Virtual Private Network

WDM Wavelength Division Multiplexing

WRR Weight Round Robin



8 Standard Compliance

Table 8- 1 Standard Compliance

IEEE Std802.3ah-2004

Media Access Control Parameters, Physical Layers andManagement Parameters for Subscriber AccessNetworks

IEEE 802.3avPhysical Layer Specifications and ManagementParameters for 10 Gb/s Passive Optical Networks

YD/T 1475-2006 Access Network Technology Requirements – EPON

YD/T 1531-2006Test Method for Access NetworkEquipment——Passive Optical Network Based onEthernet(EPON)

YD/T 1771-2008Technical Requirements for AccessNetworks——Interoperability of EPON Systems

YD/T 1809-2008Testing Methods for Access Network——Interoperabilityof EPON Systems

China Telecom EPON Equipment TechnologyRequirements

ITU-T G.984.1General characteristics for Gigabit-capable PassiveOptical Networks (GPON)

ITU-T G.984.2Gigabit-capable passive optical networks (GPON):Physical media dependent (PMD) layer specification

ITU-T G.984.3Gigabit-capable Passive Optical Networks (G-PON):Transmission convergence layer specification

ITU-T G.984.4Gigabit-capable Passive Optical Networks (G-PON):ONT management and control interface specification

ITU-T G.984.5Gigabit-capable Passive Optical Networks (G-PON):Enhancement band

Broadband ForumTR-101

Migration to Ethernet-Based DSL Aggregation, April2006

Broadband ForumTR-156

Using GPON Access in the context of TR-101,December 2008

broadband forumTR-165

Vector of Profiles



IEEE Std802.1D-2004

Media Access Control (MAC) Bridges

IEEE Std802.1Q-2005

Virtual Bridged Local Area Networks

IEEE Std802.1ad-2005

IEEE Standards for Local and Metropolitan AreaNetworks --Virtual Bridged Local Area Networks--Revision--Amendment 4: Provider Bridges(Amendmentto 802.1Q？-2005)

IEEE 802.3-2008

IEEE Standard for Informationtechnology—Telecommunications and informationexchange between systems—Local and metropolitanarea networks—Specific requirements Part 3: Carriersense multiple access with collision detection(CSMA/CD) access method and physical layerspecifications (Includes: IEEE Std 802.3ae-2002, IEEEStd 802.3af-2003, IEEE Std 802.3ah-2004, IEEE Std802.3aj-2003, IEEE Std 802.3ak-2004)(Revision ofIEEE 802.3-2002)

IEEE 802.1X-2004IEEE Standards for Local and Metropolitan AreaNetworks: Port-Based Network Access Control

ITU-T Y.1291An architectural framework for support of Quality ofService in packet networks

ITU-T H.248.1 Gateway control protocol: Version 2

ITU-T H.248.1 v3 Gateway control protocol: Version 3

YD/T 1292-2003 Media Gateway Control Protocol Based on H.248

IETF RFC3261 SIP: Session Initiation Protocol

IETF RFC1112 Host extensions for IP multicasting

IETF RFC2236 Internet Group Management Protocol, Version 2

IETF RFC 3376 Internet Group Management Protocol, Version 3

ITU-T G.992.1 Asymmetrical digital subscriber line (ADSL) transceivers

ITU-T G.992.3Asymmetric digital subscriber line transceivers 2(ADSL2)

ITU-T G.992.5Asymmetric Digital Subscriber Line (ADSL) transceivers- Extended bandwidth ADSL2 (ADSL2+)

ITU-T G.993.2Very high speed digital subscriber line transceivers 2(VDSL2)



ITU-T G.993.5Self-FEXT Cancellation (Vectoring) for use with VDSL2transceivers

ITU-T G.991.2Single-Pair High-Speed Digital Subscriber Line (Shdsl)transceivers

ITU-T G.993.5Self-FEXT Cancellation (Vectoring) for use with VDSL2transceivers

ITU-T G.997.1Physical layer management for digital subscriber line(DSL) transceivers

ITU-T G.998.1 ATM-based multi-pair bonding

ITU-T G.998.2 Ethernet-based multi-pair bonding

ITU-T G.998.4Improved Impulse Noise Protection (INP) for DSLTransceivers

ITU-T G.999.1 LINK layer to PHY layer interface

YD/T 1185-2002 Access Network Technology Requirements –SHDSL

YD/T 1244-2002XDSL Equipment Electromagnetic ComplianceRequirements and Test Methods

SFF-8472Specification for Diagnostic Interface for OpticalTransceivers (Rev 10.3 Dec.1, 2007)

ITU I.430BASIC USER-NETWORK INTERFACE –LAYER 1SPECIFICATION

ETS 300 324-1

Signalling Protocols and Switching(SPS) V interfaces atthe digital Local Exchange(LE);V5.1 interface for thesupport of Access Network(AN);Part 1:V5.1 interfacespecification

ETS 300 347-1

Signalling Protocols and Switching(SPS);V interfaces atthe digital Local Exchange(LE);V5.2 interface for thesupport of Access Network(AN);Part 1:V5.2 interfacespecification

ETS 300 011Integrated Services Digital Network (ISDN); Primary rateuser-network interface, Layer 1 specification and testprinciples

ETS 300 166

Transmission and Multiplexing (TM); Physical andelectrical characteristics of hierarchical digital interfacesfor equipment using the 2 048 kbit/s-basedplesiochronous or synchronous digital hierarchies

ETS 300 233Integrated Services Digital Network (ISDN); Accessdigital section for ISDN primary rate



ITU-T Rec. G.704Synchronous frame structures used at primary andsecondary hierarchical levels

ITU-T Rec. G.706Frame Alignment and Cyclic Redundancy Check (CRC)Procedures Relating to Basic Frame Structures Definedin Recommendation G.704 (Study Group XVIII) 19 pp

zxdsl 9836 product description - zte at versatek...

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