E1/T1 Surge Protection Transfer Cable - Huawei BTS3900C Hardware Description

BTS3900C (Ver.C)
Hardware Description
Pin on the DB26
Male Connector
X.22
X.23
X.24
X.25
X.26
Table 7-29 Pin assignment for the wires of the 100-ohm T1 twisted pair cable
Pin on the DB26
Male Connector
X.1
X.2
X.3
X.4
X.5
X.6
X.7
X.8
X.19
X.20
X.21
X.22
X.23
X.24
X.25
X.26

7.6.2 E1/T1 Surge Protection Transfer Cable

This section describes the E1/T1 surge protection transfer cable connecting the UELP to the
transmission board. This cable is optional. The length of an E1/T1 surge protection transfer cable
is 0.65 m (2.13 ft).
Issue 03 (2013-05-27)
Wire Color
Red
Orange
Red
Green
Red
Wire Color
Blue and white
White and blue
Orange and white
White and orange
Green and white
White and green
Brown and white
White and brown
Gray and white
White and gray
Blue and red
Red and blue
Orange and red
Red and orange
Green and red
Red and green
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Copyright © Huawei Technologies Co., Ltd.
Wire Type
Twisted pair
Twisted pair
Wire Type
Twisted pair
Twisted pair
Twisted pair
Twisted pair
Twisted pair
Twisted pair
Twisted pair
Twisted pair
7 BTS3900C Cables
Wire Label
TX2-
TX3+
TX3-
TX4+
TX4-
Wire Label
RX1+
RX1-
RX2+
RX2-
RX3+
RX3-
RX4+
RX4-
TX1+
TX1-
TX2+
TX2-
TX3+
TX3-
TX4+
TX4-
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