Figure 4-7 E1/T1 Surge Protection Transfer Cable; Table 4-7 Pin Assignment For The Wires Of The E1/T1 Surge Protection Transfer Cable - Huawei BBU3900 Hardware Description

BBU3900
Hardware Description

Figure 4-7 E1/T1 surge protection transfer cable

(1) DB25 male connector
Pin Assignment
Table 4-7

Table 4-7 Pin assignment for the wires of the E1/T1 surge protection transfer cable

Pin on the DB26 Male
Connector
X1.20
X1.19
X1.4
X1.3
X1.22
X1.21
X1.6
X1.5
X1.24
X1.23
X1.8
X1.7
X1.1
X1.2
X1.25
X1.26
Issue 11 (2010-11-10)
describes the pin assignment for the wires of the E1/T1 surge protection transfer cable.
Type
Twisted pair cable
Twisted pair cable
Twisted pair cable
Twisted pair cable
Twisted pair cable
Twisted pair cable
Twisted pair cable
Twisted pair cable
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
(2) DB26 male connector
Pin on the DB25 Male
Connector
X2.2
X2.3
X2.4
X2.5
X2.6
X2.7
X2.8
X2.9
X2.10
X2.11
X2.12
X2.13
X2.14
X2.15
X2.24
X2.25
4 BBU3900 Cables
4-11