Table 5-16 DIP switch on the UELP
DIP
Switch
Bit Status Description
1 2 3 4
S1 OFF OFF OFF OFF Not grounded
Other status Grounded
NOTE
The 75-ohm E1 cable can be either grounded or not grounded, whereas the 120-ohm E1 cable and the 100-
ohm T1 cable cannot be grounded.
5.8.4 UFLP
The universal FE/GE lightning protection (UFLP) board is a universal FE surge protection unit,
each UFLP supports 2-way FE surge protection.
Panel
Figure 5-18 shows the panel of the UFLP.
Figure 5-18 Panel of the UFLP
Ports
Table 5-17 describes the ports on the panel of the UFLP.
Table 5-17 Ports on the panel of the UFLP
Port Location
Label Connector Type Description
INSIDE side FE0, FE1 RJ-45 Connected to the
board for
transmission in the
base station
OUTSIDE side FE0, FE1 RJ-45 Connected to the
external
transmission
devices
5 Auxiliary Devices of the BBU3900
BBU3900
Hardware Description
5-22 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 11 (2010-11-10)