Item Silkscreen Remarks
(2) Bottom ports A T/R TX/RX port A, supporting RET signal
transmission
C T/R TX/RX port C
D T/R TX/RX port D
B T/R TX/RX port B, supporting RET signal
transmission
EXT_ALM Alarm monitoring port used for monitoring
one RS485 signal and two dry contact signals
RET Communication port for the RET antenna,
supporting RET signal transmission
(3) Indicator RUN For details, see 3.3 RRU Indicators.
ALM
ACT
VSWR
CPRI0
CPRI1
NOTE
l The port for transmitting RET signals is determined by the software.
l Connect the CPRI0 port to the BBU by default in the single-mode scenario.
3.3 RRU Indicators
This section describes six indicators on an RRU. They indicate the running status of the RRU.
For detailed positions of RRU indicators, see 3.2 RRU Ports.
Table 3-2 describes RRU indicators.
Table 3-2 RRU Indicators
Indicator Color Status Meaning
RUN Green Steady on The power input is available, but the board is
faulty.
Steady off No power input is available or the board is
faulty.
3 Information About the Installation
Issue () Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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