Huawei OptiX PTN Series Quick Installation Manual page 23

4 Installing/Routing Housekeeping Alarm Cables
One end of the alarm input cable is connected to the
ALMI interface, and the other end of the cable is
connected to the external device.
S T A T MA J
Alarm input
CRIT MIN
LAMP CLK1
ALMI CLK2
TOD1
ALMO1
ALMO2 TOD2
Overhead cabling
cable
External
environment
monitoring
ALMI device
Underfloor cabling
The alarm output cable is used to output the alarm signals to the
central alarm monitoring equipment. One end of the alarm output
cable is connected to the ALMO interface on an EFI board, and the
other end of the cable is connected to the central alarm monitoring
device. When any of the ALMO1 and ALMO2 interfaces functions
as the alarm output interface, the other one can be used as the
alarm concatenation interface.
Alarm output
cable
Connect to
the
centralized
alarm
monitoring
system
Alarm input cable
NOTE
1. The alarm input/output cable is routed
through the cable trough either in overhead
cabling or underfloor cabling mode.
2. Two cable saddle clamps are mounted
on each side (left and right sides) of the
OptiX PTN 7900-32 subrack for routing
SCA board fibers. The two cable saddle
clamps are next to the SCA boards. Route
the NM cables through these cable saddle
clamps.
20
ALMO1
ALMO2
Alarm output cable