Pin on the DB26
Male Connector
Type
(1)
Coaxial Unit No.
Wire Label
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-
NOTE
(1) "Tip" refers to a wire in the E1 coaxial cable and "Ring" refers to an external conductor of the cable.
Table 7-28
Pin assignment for the wires of the 120-ohm E1 twisted pair cable
Pin on the DB26
Male Connector
Wire Color
Wire Type
Wire Label
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-
X.7
Brown
Twisted pair
RX4+
X.8
White
RX4-
X.19
Gray
Twisted pair
TX1+
X.20
White
TX1-
X.21
Blue
Twisted pair
TX2+
BTS3900C (Ver.C)
Hardware Description
7 BTS3900C Cables
Issue 03 (2013-05-27)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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