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HUAWEI SmartAX MA5818 IP Dslam

The SmartAX MA5818 multi-service access module (MA5818 for short) is a new-generation large-capacity multi-service gigabit access device that provides ultra-high bandwidth access capability and flexible capacity expansion capability.

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 HUAWEI SmartAX MA5818 IP Dslam

Product Overview

 

The SmartAX MA5818 multi-service access module (MA5818 for short) is a new-generation large-capacity multi-service gigabit access device that provides ultra-high bandwidth access capability and flexible capacity expansion capability.

 

Application Scenarios

The MA5818 provides the following user ports: G.fast, very-high-speed digital subscriber line 2 (VDSL2), Vectoring, SuperVector and plain old telephone service (POTS). The MA5818 provides GPON/XG-PON/GE/10GE upstream transmission modes and can be used in fiber to the building (FTTB), fiber to the curb (FTTC), and dedicated line access scenarios.

Figure 1 Position of the MA5818 on the network
 

Product Highlights

Ultra-High Bandwidth

  • The backplane has an ultra-large capacity, supports non-converged forwarding for various access technologies, and supports 20 Gbit/s upstream transmission.
  • The bandwidth over copper lines can be boosted to about 50 Mbit/s.
  • The bandwidth of VDSL2 lines on an FTTB/FTTC network can be boosted to about 100 Mbit/s by using the vectoring technology to eliminate the remote crosstalk of VDSL2 lines.
  • Based on VDSL2 vectoring, SuperVector greatly speeds up the copper line rate to 300 Mbit/s. In this way, copper lines can meet users' high-bandwidth requirement.
  • Pioneers the use of G.fast, an innovative high-bandwidth copper access technology. G.fast enables networks to use wider spectrums to provide up to 1 Gbit/s symmetric or asymmetric bandwidths over the traditional twisted pairs. With G.fast, copper networks can meet the growing bandwidth demands from users.

Large Capacity

One MA5818 device can support:

  • A maximum of 96 G.fast (106M) ports.
  • A maximum of 256 VDSL2 ports.
  • A maximum of 256 Vectoring ports.
  • A maximum of 192 SuperVector ports.
  • A maximum of 192 combo ports.
  • A maximum of 256 POTS ports.

Two MA5818 devices can support:

  • A maximum of 198 G.fast (106M) ports
  • A maximum of 512 VDSL2 ports
  • A maximum of 512 Vectoring (NLV) ports
  • A maximum of 384 SuperVector (NLV) ports
  • A maximum of 384 combo (NLV) ports
  • A maximum of 512 POTS ports

Four MA5818 devices can support:

  • A maximum of 1024 VDSL2 ports
  • A maximum of 1024 POTS ports

Flexible Capacity Expansion

  • Provides separate VP slots to support smooth capacity expansion.
  • Supports various access technologies and evolution by simply replacing boards.

Fast Deployment

  • Reuses copper cables to avoid digging trenches and burying cables, shortening the construction period.
  • Supports one-stop site deployment for the FTTB/C application scenarios with a low cost and quick coverage.
  • Supports plug and play and offline deployment without onsite software commissioning.

Appearance

An MA5818 chassis has 7 slots and 1 fan tray. It can be secured in a 19-inch cabinet or rack using mounting ears.

Appearance of the MA5818 Chassis

Figure 1 Appearance of the MA5818 chassis (AC power board) 
Figure 2 Appearance of the MA5818 chassis (DC power board) 

Electrostatic Discharge (ESD) Jack

When installing or removing a board, wear an ESD wrist strap. One end of the ESD wrist strap must be inserted into the ESD jack of the fan tray.

Figure 3 Position of the ESD jack on the MA5818 chassis 

Grounding

The chassis of the MA5818 must be grounded properly so that the lightning can flow to the ground, which improves the capability of the chassis to resist the electromagnetic interference.

  • The ground cable must be connected properly to protect the MA5818 chassis against lightning and interference and also to ensure personnel safety.
  • The ground resistance of the chassis is recommended to be smaller than 0.1 ohms. In addition, the national or local standards and specifications need to be referenced.

When grounding the MA5818 chassis, connect the shell ground point or mounting ear ground point of the chassis to the cabinet ground point using a PGND cable. Either the shell ground point or the mounting ear ground point is connected to the cabinet ground point based on the actual installation scenario.

Figure 4 Position of the ground point of the MA5818 chassis 

ardware Configuration

On the MA5818 chassis, a control board is installed in slot 0, service boards are installed in slots 1 to 4, a power board is installed in slot 5, and a centralized vectoring processing board is installed in slot 6.

The backplane supported by the MA5818 is H831MABM.

Figure 1 Board configuration of the MA5818 chassis

Power Supply Parameters

The MA5818 chassis is configured with a DC or AC power board to draw in DC or AC power and output power to the backplane. Through the backplane, it passes through power to the service boards, centralized vectoring processing board, control board, and fan monitoring board.

Figure 1 Working principle of the power distribution of the MA5818 Chassis 

Board Structure

A board mainly consists of the printed circuit board (PCB) and the front panel.

Figure 1 shows the board structure.

Figure 1 Board structure 

A board mainly consists of the following parts:

  • PCB
  • The PCB houses various functional chips of the board and is the most important part of the board. Through the front panel, the PCB provides indicators, buttons, and ports. For some boards, the PCB also provides a position for installing a daughter board.

    Different boards provide different indicators, buttons, and ports; not all boards support a daughter board. For details, see the description of each board.

  • Front panel: includes the captive screws, ejector levers, and plate.
    • Captive screws: secure the board in the subrack.
    • Ejector levers: used for installing or removing the board.
    • Plate: connects the PCB and the ejector levers. The plate also provides a surface for attaching some labels (such as the bar code label and laser label).

Board Name and Version

This topic describes the board name and version.

As shown in Figure 1, the board name and version are printed on the printed circuit board (PCB).

Figure 1 Board name and version

Voice Service Board

Voice service boards support VoIP POTS service.

Combo Board

The combo board is a broadband and narrowband combo service board and provides three application modes: combo mode, broadband mode, and narrowband mode. In combo mode, the combo board supports both broadband and voice services.

    Combo Boards Specifications
    H83DCCME
    H83DCCME is a 48-channel VDSL2 and POTS combo service board that provides VDSL2 and POTS integrated access services. It has an embedded splitter. It supports vectoring.
    H83DCSME
    H83DCSME is a 48-channel SuperVector and POTS combo service board that provides the SuperVector and POTS integrated access service. It has an embedded splitter. It supports SuperVector.

VDSL2 Service Board

VDSL2 service boards provide the VDSL2 access service using broadband ports.

    Differences Between VDSL2 Service Boards
    Based on the number of supported users, VDSL2 service boards supported by the MA5818 can be classified into 48-channel VDSL2 service board, and 64-channel VDSL2 service board. These boards support VDSL2 and VDSL2 over POTS/ISDN access services.
    H836VDLE Board Description
    H836VDLE is a 32-channel VDSL2 over POTS service board that provides the VDSL2 over POTS access service. It has an embedded splitter with 600-ohm impedance.
    H83DVCMM
    H83DVCMM is a 48-channel VDSL2 service board that provides the VDSL2 access service. It does not have an embedded splitter. It supports vectoring and metallic line testing (MELT).
    H83DSDMM
    H83DSDMM is a 48-channel SuperVector service board that provides the SuperVector access service. It does not have an embedded splitter. It supports metallic line testing (MELT).
    H83DVCPD
    H83DVCPD is a 64-channel VDSL2 service board that provides the VDSL2 access service. It does not have an embedded splitter and supports vectoring.
    H83DVCPE
    H83DVCPE is a 64-channel VDSL2 over POTS service board that provides the VDSL2 over POTS access service. It has an embedded splitter with 600-ohm impedance and supports vectoring.
    H836VCPE Board Description
    H836VCPE is a 64-channel VDSL2 over POTS service board that provides the VDSL2 over POTS access service. It has an embedded splitter with 600-ohm impedance.

Centralized Vectoring Processing Board

The centralized vectoring processing board calculates the line crosstalk for the system.

    Differences Between Centralized Vectoring Processing Boards
    H836VPJA
    H836VPJA is a centralized vectoring processing board. It supports G.fast port system-level vectoring for calculating the line crosstalk for the systems.
    H836VPJB
    H836VPJB is a centralized vectoring processing board. It supports system level vectoring of VDSL2, SuperVector, and G.fast services and is used for calculating and canceling the line crosstalk of the system.
    H836VPQA
    H836VPQA is a centralized vectoring processing board. It supports VDSL2 service system level vectoring (SLV) for calculating the line crosstalk for the systems.
    H838VPDE
    H838VPDE is a centralized vectoring processing board. It supports VDSL2/SuperVector service system level vectoring (SLV) and nodelevel vectoring (NLV) for calculating the line crosstalk for the systems.

G.fast Service Access Board

G.fast service access boards provide broadband access services using G.fast ports.

     

    Differences Between G.fast Service Boards
    The MA5818 chassis supports access of G.fast services.
    H83DFDSH
    H83DFDSH is a 24-channel G.fast service board with no built-in splitter. It is used for access of G.fast services and supports vectoring and metallic line testing (MELT) functions.
    H82DFDSD
    H82DFDSD is a 24-channel G.fast service board with no built-in splitter. It is used for access of G.fast services and supports vectoring functions.
    H83FFDSH
    H83FFDSH is a 24-channel G.fast service board without a built-in splitter. It is used for access of G.fast services and supports vectoring and metallic line testing (MELT) functions.

Power Board

Connected to the external AC or DC power supply, the power board converts the voltage of such power supply into an appropriate voltage using its power module and powers other boards in the chassis.

    Differences Between Power Boards
    The MA5818 chassis supports AC and DC power boards.
    H831PDMA
    H831PDMA is a DC power board that passes through and converts the combined single -48 V DC power. It then outputs -48 V DC and +12 V DC power to the backplane. Through the backplane, it passes through power to the service boards, centralized vectoring processing board, control board, and fan monitoring board.
    H831PAMA
    H831PAMA is an AC power board that converts the 220 V AC or 110 V AC power. It then outputs -48 V DC and +12 V DC power to the backplane. Through the backplane, it passes through power to the service boards, centralized vectoring processing board, control board, and fan monitoring board.
    H831PDMB
    H831PDMB is a DC power board that passes through and converts the combined single -48 V DC power. It then outputs -48 V DC and +12 V DC power to the backplane. Through the backplane, it passes through power to the service boards, centralized vectoring processing board, control board, and fan monitoring board.
    H831PAMB
    H831PAMB is an AC power board that converts the 220 V AC or 110 V AC power. It then outputs -48 V DC and +12 V DC power to the backplane. Through the backplane, it passes through power to the service boards, centralized vectoring processing board, control board, and fan monitoring board.

     

 

 

Item

Description

Dimensions (H×W×D)

88.1 mm x 442.0 mm x 245.0 mm (excluding mounting ears)

88.1 mm x 482.6 mm x 245.0 mm (including mounting ears)

Weight

≤ 3.4 kg (empty chassis)

≤ 12.2 kg (chassis in full configuration)

Ambient temperature

-40°C to +65°C

NOTE:

The device can start up at a lowest temperature of -25°C and run at a lowest temperature of -40°C.

Ambient humidity

5%RH to 95%RH

Atmospheric pressure

70 kPa to 106 kPa

Altitude

< 4000 m

NOTE:

The air density varies with the altitude, which affects the heat dissipation of the device. Therefore, the ambient temperature of the device varies with the altitude.

Working voltage range

-38.4 V DC to –72 V DC or 90 V to 264 V AC

Maximum input current

16 A (DC)/8 A (AC)

UNI

G.fast/SuperVector/Vectoring/VDSL2/POTS

NNI

XG-PON/GPON/10GE/GE

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