Huawei DBS3900 Installation Manual page 17

RRU3249
Installation Guide
Figure 3-4 Ports on the RRU panels
Table 3-1
Table 3-1 Ports and indicators on the RRU panels
Item
(1) Bottom ports
(2) Ports in the cabling
cavity
Issue DraftA (2015-05-30)
describes ports and indicators on the RRU panels.
Silkscreen
ANT_TX/RXA
ANT_TX/RXB
EXT_ALM
RET
RTN(+)
NEG(-)
CPRI0
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3 Information About the Installation
Remarks
TX/RX port A, supporting RET signal
transmission
TX/RX port B, supporting RET signal
transmission
Alarm monitoring port used for monitoring
one RS485 signal and two dry contact signals
Communication port for the RET antenna,
supporting RET signal transmission
Power supply socket, for details about RRU
power cable experience and specifications,
see RRU Power Cable.
Optical/electrical port 0, connected to the
BBU
9