Preparing And Installing Asynchronous Data Cables - Huawei RTN 905 V100 Quick Installation Manual

9

Preparing and Installing Asynchronous Data Cables

a
Make an asynchronous data cable according to the pin assignment.
Pin 8
Pin
1
2
3
6
4
5
7
8
b
Install asynchronous data cables on the RTN 905.
Pin 1
Pin assignments for Asynchronous Data Cables
Relationship
Color
White/Orange
Twisted pair
Orange
White/Green
Twisted pair
Green
Blue
Twisted pair
White/Blue
White/Brown
Twisted pair
Brown
Function
Positive for transmitting data by the NMS
cascading port
Negative for transmitting data by the NMS
cascading port
Positive for receiving data by the NMS
cascading port
Negative for receiving data by the NMS
cascading port
Ground for the 19.2 kbit/s asynchronous
data port
Receiving data by the 19.2 kbit/s
asynchronous data port
Reserved
Transmitting data by the 19.2 kbit/s
asynchronous data port
EXT/S1
27
Pin 8
Pin 1
To a
asynchronous
data
communication
device