Label
Connector Type
Description
ETH
RJ45 connector
Commissioning Ethernet
port
USB
USB connector
USB loading port
TST
USB connector
USB testing port
RST
-
Resetting the BBU
DIP Switches
The WMPT has two DIP switches: SW1 for setting the E1/T1 working mode and SW2 for setting
the protection grounding for the E1/T1 cables receiving 4-way signals.
shows the
DIP switches on the WMPT.
Figure 4-8
DIP switches on the WMPT
describe the settings of SW1 and SW2.
Table 4-11
Settings of SW1
DIP
Switch
DIP Status
Description
1
2
3
4
SW1
ON
ON
OFF
OFF
T1 Mode
OFF
OFF
ON
ON
The E1
impedance is
set to 120
ohms.
BTS3900
Hardware Description
4 BTS3900 Components
Issue 04 (2011-02-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4-13