Slot
Label
Connecto
r
Quantity
Description
EXT-
ALM1
RJ-45
1
Port for Boolean inputs 4 to 7
MON0
RJ-45
1
Port for RS485 input 0
MON1
RJ-45
1
Port for RS485 input 1
UEIU
The Universal Environment Interface Unit (UEIU) transmits monitoring and alarm signals from
the external devices to the main control and transmission unit.
Panel
shows the panel of the UEIU.
Figure 4-21
Panel of the UEIU
Functions
The UEIU performs the following functions:
l
Provides two ports, each transmitting one RS485 signal.
l
Provides two ports, each transmitting four Boolean signals.
l
Transmits monitoring signals and alarm signals from external devices to the main control
and transmission unit.
Ports
The UEIU is configured in slot 18. It provides four ports with two ports transmitting two RS485
input signals and the other two ports transmitting eight Boolean signals.
describes the ports on the panel of the UEIU.
4 BTS3900 Components
BTS3900
Hardware Description
4-28
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Copyright © Huawei Technologies Co., Ltd.
Issue 04 (2011-02-15)