Working Principle
Figure 3-7 Working principle of the H802SCUB board
H802SCUB
B
a
c
k
p
l
a
n
e
C
o
n
n
e
c
t
o
r
Uplink
board
(slot 2)
Service
board
-48V DC
power
Power
module
Voltage required
by the board
Clock
module
Clock required
by the board
Daughter
board
S
w
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t
c
h
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n
g
m
o
d
u
l
e
Control
module
U
p
p
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r
-
l
a
y
e
r
d
e
v
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c
e
o
r
c
a
s
c
a
d
i
n
g
d
e
v
i
c
e
TX0/RX0
16*GE
4*GE
3*GE
GE
Backplane
TX3/RX3
Service
signal
Control
signal
Monitoring
signal
Power
signal
Clock
signal
M
a
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n
t
e
n
a
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c
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t
e
r
m
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a
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Maintenance
serial port
Maintenance
network port
Monitoring
serial port
E
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v
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o
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m
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t
m
o
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i
t
o
r
Electronic
Switch
Module
Electronic
Switch
Module
Uplink
board
(slot 1)
The basic working principle of the H802SCUB board is as follows:
l The control module manages the H802SCUB board and service boards, and
communicates with the fan tray through the extended serial port.
l The power module supplies power to other functional modules of the board.
l The clock module provides clock signals for other functional modules of the board.
l The switching module provides the GE port to switch and aggregate services at Layer 2
or Layer 3.
– Providing 16 GE ports to implement GE switching on each service board
– Providing four GE ports for upstream transmission using the control board or
upstream board (in the first of the two slots for the upstream board), which is
controlled by the electronic switch.
– Providing four GE ports for upstream transmission using the upstream board (in the
second of the two slots for the upstream board). Either the last GE port or VoIP
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
3 Board
Issue 24 (2018-07-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
207
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