Exterior
The E1/T1 surge protection transfer cable has a DB26 male connector at one end and a DB25
male connector at the other end, as shown in Figure 7-26.
Figure 7-26 E1/T1 surge protection transfer cable
(1) DB25 male connector (2) DB26 male connector
Pin Assignment
Table 7-30 describes the pin assignment for the wires of the E1/T1 surge protection transfer
cable.
Table 7-30 Pin assignment for the wires of the E1/T1 surge protection transfer cable
Pin on the DB25 Male
Connector
Type Pin on the DB26 Male
Connector
X1.20 Twisted pair cable X2.2
X1.19 X2.3
X1.4 Twisted pair cable X2.4
X1.3 X2.5
X1.22 Twisted pair cable X2.6
X1.21 X2.7
X1.6 Twisted pair cable X2.8
X1.5 X2.9
X1.24 Twisted pair cable X2.10
X1.23 X2.11
X1.8 Twisted pair cable X2.12
X1.7 X2.13
X1.1 Twisted pair cable X2.14
X1.2 X2.15
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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