l In the upstream direction, the interface module transmits subscriber line signals to the
forwarding module. The forwarding module reorganizes the cell flow into ATM packets,
encapsulates the ATM packets into IP packets, and performs CAR on the IP packets.
Controlled by the logical switch, the IP packets are transmitted to the backplane bus
through the backplane interface.
l In the downstream direction, the forwarding module decapsulates the IP packets from the
backplane bus, performs CAR on the IP packets, reorganizes the IP packets into ATM
packets, and transmits the ATM packets to the interface module. The interface module
converts the ATM packets into analog signals and transmits the signals to subscriber
lines.
Front Panel Port
NOTICE
l When cables from the xDSL ports are routed to an outdoor environment or the user side,
the MDF must be installed with a protective unit.
Indicator
Indicato
r
Name Color Status Meaning
RUN
ALM
Running
status
indicator
Green Blinking slowly (on
for 1 s and off for 1 s
repeatedly)
The board works in the
normal state
Green Blinking quickly (on
for 0.25 s and off for
0.25 s repeatedly)
The board is starting up
Red On The board is faulty
BSY Port status
indicator
Green On At least one service port is
activated
- Off No service port is
activated
Pin Assignments
For pin assignment of the xDSL0 port, see Table 3-89; For pin assignment of the xDSL1 port,
see Table 3-90;
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.
548
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