NOTE
, "Tip" refers to a wire in the E1 coaxial cable, and "Ring" refers to an external conductor of
the cable.
Table 5-70
Pin assignment for the wires of the 75-ohm E1 coaxial cable
Pins of the DB26
Male Connector
Wire Type
Coaxial Series No.
Cable Label
X1.1
Tip
1
RX1+
X1.2
Ring
RX1-
X1.3
Tip
3
RX2+
X1.4
Ring
RX2-
X1.5
Tip
5
RX3+
X1.6
Ring
RX3-
X1.7
Tip
7
RX4+
X1.8
Ring
RX4-
X1.19
Tip
2
TX1+
X1.20
Ring
TX1-
X1.21
Tip
4
TX2+
X1.22
Ring
TX2-
X1.23
Tip
6
TX3+
X1.24
Ring
TX3-
X1.25
Tip
8
TX4+
X1.26
Ring
TX4-
Table 5-71
Pin assignment for the wires of the 120-ohm E1 twisted pair cable
Pins of the DB26
Male Connector
Wire Color
Wire Type
Cable Labels
X.1
Blue
Twisted pair
RX1+
X.2
White
RX1-
X.3
Orange
Twisted pair
RX2+
X.4
White
RX2-
X.5
Green
Twisted pair
RX3+
X.6
White
RX3-
5 BTS3900 Cables
BTS3900
Hardware Description
5-76
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 04 (2011-02-15)