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. Figure 4-8 shows the
DIP switches on the WMPT.
Figure 4-8 DIP switches on the WMPT
Table 4-11 and Table 4-12 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
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