Appearance and description of Huawei OLT (MA5608T)

Appearance and description function of hardware

• Power Board

Parameter	Specification
Power supply mode	DC or AC
Rated voltage	DC power supply: -48 V / -60V AC power supply: 110 V / 220V
Working voltage range	DC power supply: -38.4 V to -72 V AC power supply: 100 V to 240 V
Maximum input current	DC power supply: 10A AC power supply: 6A

• ESD Jack

The ESD wrist strap is used to prevent the electrostatic discharge from damaging the equipment.One end of the ESD wrist strap should be connected to the ESD jack on the subrack.

Wear an ESD wrist strap during the installation. Insert one end of the ESD wrist strap into theESD jack (labeled with ESD)

• Grounding

Ground the chassis shell securely so that the influence electricity, leakage electricity can flow to the ground, improving the protection against electromagnetic interference.

Use a ground cable to connect the ground point of the chassis shell to the ground bar of the telecommunications room or to the ground directly. It is recommended that the grounding resistance of the telecommunications room should be less than 10 ohms. Refer to the local standards to ground the chassis.

The ground point of the chassis shell is on the left of the chassis, and there is a ground point on the front of the left mounting bracket as shown

• Fan Tray

Specification of the fan tray

Item	Specification
Dimensions (W x D x H)	29mm*220mm*85.5mm
Weight	0.5kg
Power consumption (including FCBB board)	·         Static: 4 W ·         Maximum: 39 W

Function

Heat dissipation

The fan tray is at the left of the service subrack and blows air for heat dissipation of the service subrack. The cool air flows to the subrack from the left of the subrack and then is exhausted from the right of the subrack after passing the boards.

Monitoring

The fan tray is configured with a fan monitoring board. The fan monitoring board transmits speed adjustment signals to the fan tray, collects the rotating speed signals of the fans, and reports the rotating speed signals to the control board.

Speed adjustment

The rotating speed of the fans can be adjusted according to the detected temperature automatically or be adjusted by software manually.

LED

Silkscreen	Status	Description
STATUS	Steady green	The fan tray functions properly
	Steady red	The fan tray is abnormal

Fan Speed Adjustment

Fans in the fan tray of the MA5608T chassis have the following modes:

- Self-check mode: Fans start running at full speed when the device is powered on for the first time or is reset. After fans start up, the duty ratio of fans is initialized.

- Troubleshooting mode: Fans run at the old speed and related alarms are reported when faults occur.

- Board-based fan speed adjustment mode: According to the temperatures detected by temperature sensors on all boards, fans automatically adjust their speed.

- Temperature mode: According to the temperature of the fans, fans automatically adjust their speed.

• Cabling teeth

Used to manage cable

• Service Board

We used H802GPDF 16-port GPON OLT interface board for our MA5608T. It works with the optical network terminal (ONT) to provide GPON access service.

Parameters

Board	Dimensions (W x D x H)	Power Consumption	MTU
H802GPFD	22.86 mm x 237.00 mm x 395.40 mm	·         Static: 45 ·         Maximum: 73	·         For V800R011C00 and earlier version: 2000 bytes ·         For V800R012C00 and later versions: 2004 bytes

Working principle of the H802GPFD board

The basic working principle of the H802GPFD board is as follows:

• The control module loads the board software, controls the running of the board, and manages the board.

• The switching module aggregates the signals from sixteen GPON ports.

• The interface module converts between GPON signals and Ethernet packets.

• The power module supplies power to other functional modules of the board.

• The clock module provides the working clock for other functional modules of the board.

PORT

Port	Function	Connection
PON port	Each provides sixteen channel of GPON access service Capacity 1.238G per PON port.	After an optical module is installed. Use an optical fiber to connect each port to the ONT. Connect: 128 ONTs per PON port.

Front Panel and LED

RUN ALM: running status LED
Red: blinks every 0.25s	The board enters the APP start phase during the board startup.
Green: blinks every 0.25s	The board enters the phase of communication with the control board during its startup.
Green: blinks every 1s	The board works in the normal state.
Orange: blinks every 0.25s(supported in V800R009C00 and later versions)	A high-temperature alarm is generated.
Red: on	The board is faulty
BSY: port status LED
Green: blinks every 0.25s	The board carries services.
Green: of	The board carries no service
0-15: PON port LED
Green: on	The ONT of the related PON port is online.
Green: blinks every 0.25s	The optical module does not take effect. Check whether the optical module is properly used.
Green: off	The ONT of the related PON port is offline.

• Control Board (H801MCUD)

The basic working principle of the H801MCUD board is as follows:
- The control module manages the entire board and the service boards.
- The logic module implements logic control.
- The power module supplies power to other functional modules of the board.
- The clock module provides clock signals for other functional modules of the board.
- The switching module provides the GE port and the 10GE port to switch and aggregate services at Layer 2 or Layer 3
  Providing four GE ports for transmitting traffic upstream
  Providing 2 GE/10 GE port for implementing GE/10GE switching on each service board.
  Providing one 10 GE port for load sharing with the standby control board.

Indicator

Indicator	Name	Status	Meaning
RUN ALM	Running status indicator	Green: blinks	The board functions properly
		Red: blinks	The board is starting up
		Orange: blinks	A high-temperature alarm is generated
		Red: on	The board is faulty
ACT	Active indicator	Green: on	In active/standby mode or load-sharing mode, the board is active
		Green: blinks	In load-sharing mode, the board is standby
		Green: off	In active/standby mode, the board is standby
GE0-GE3	Link and Data status indicator	Green: on	A link is set up on the port
		Green: blinks	Data is being transmitted on the port
		off	No link is set up on the port, or no data is being transmitted on the port