Huawei RTN 905 V100 - Cable Layout; Cable connections

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8
Preparing and Installing External Alarm Cables
Make an external alarm cable based on pin assignments.
a
Install an external alarm cable.
b
16 mm
Pin 1
Pin 8
Pin Assignments for External Alarm Cables
Pin Color Relationship Function
1
2
3
6
4
5
7
8
White/Orange
Orange
White/Green
Green
Blue
White/Blue
White/Brown
Brown
Twisted pair
Twisted pair
Twisted pair
Twisted pair
First alarm signal input
Ground of first alarm
signal input
Second alarm
signal input
Ground of second alarm
signal input
Third alarm signal input
Ground of third alarm
signal input
Positive of first alarm
signal output
ALMI/ALMO
Negative of first alarm
signal output
Pin 1
Pin 8