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The UTRP2 provides two 100M/1000M Ethernet optical ports, performs functions of the
MAC layer, receives and transmits data on Ethernet links, and analyzes the MAC address.
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The UTRP3 provides eight E1s/T1s and performs inverse multiplexing and demultiplexing
on a single ATM cell flow on the eight E1/T1 links.
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The UTRP4 provides eight E1s/T1s, frames and deframes HDLC frames, and allocates and
controls the 256 HDLC timeslot channels.
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The UTRP6 supports one unchannelized STM-1/OC-3 port.
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The UTRP9 provides four 10M/100M/1000M Ethernet electrical ports and performs the
functions of the MAC layer and physical layer.
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Cold backup is supported.
LEDs
describes the LEDs on the panel of the UTRP.
Table 3-17
LEDs on the panel of the UTRP
Label
Color
Status
Description
RUN
Green
ON
The board has power
input, but the board is
faulty.
OFF
The board has no
power input, or the
board is faulty.
Blinking (on for one
second and off for
one second)
The board is running
properly.
Blinking (on for
0.125 second and off
for 0.125 second)
The board is not
configured or is
loading software.
ON for 2s and OFF
for 2s
The board is in the
offline state or under
test.
ALM
Red
ON or blinking
rapidly
The board is
reporting alarms.
OFF
The board is running
properly.
ON for 2s and OFF
for 2s
The board is
reporting a minor
alarm.
ON for 1s and OFF
for 1s
The board is
reporting a major
alarm.
BBU3900
Hardware Description
3 BBU3900 Equipment
Issue 11 (2010-11-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3-19
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