Huawei BBU3900 Installation Manual page 55

Appendix
b
Pin Assignment for the BBU Signal Cables
Monitoring signal cable between the APMI and the BBU
Pin of the RJ45
Connector
X1.1
X1.2
X1.4
X1.5
EMUA monitoring signal cable
Pin on the RJ45
Connector
X1.1
X1.2
X1.4
X1.5
Wire Color Pins of X2,
X3, X4, and
X5
White X2
Orange X3
Blue X4
White X5
Pin of the DB9
Male Connector
X2.3
X2.7
X2.2
X2.6
Wire Type
Twisted pair
Twisted pair
Twisted pair
Twisted pair
Wire Color Wire Type
White Twisted pair
Orange Twisted pair
Blue Twisted pair
White Twisted pair
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Port on the
APMI
TX+
TX-
RX+
RX-
Port on the
APMI
TX+
TX-
RX+
RX-