Huawei 3900 Series Commissioning Manual page 173

3900 Series Multi-Mode Base Station
Commissioning Guide
Prerequisite
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Procedure
Step 1 Check whether the UTRP is installed. If it is installed, perform the check based on the following
table. If it is not installed, go to
If ...
The RUN LED is oN for 1s and off for 1s
and the ALM LED is off.
The RUN LED is on for 0.125s and off
for 0.125s.
The RUN and ALM LED are in other
states.
Step 2 Check whether the settings of DIP switch meet the field requirements. if not, modify the settings
of DIP switch as required.
Step 3 Check the status of the LEDs LIU0 to LIU3 on the panel of the GTMU in the BBU. The LEDs
LIU0 to LIU3 correspond to links 1 to 4 of the E1/T1 cable respectively. Each link has one TX
line and one RX line.
If ...
The LED is OFF
The LED is on or on for 0.125s and off for 0.125s. The E1/T1 link is faulty. Go to
Step 4 Check the connections and connectors at both ends of the cables. If a connector is damaged,
replace it.
Issue 02 (2010-07-30)
The BBU is properly connected to the BSC through an E1/T1 cable.
The BBU and the BSC are successfully powered on.
NOTE
You need to check the status of only the LIU LED corresponding to the E1/T1 link in use. The LIU LEDs
corresponding to the unused E1/T1 links are on.
For the BBUs that are not connected in cascading mode, if the LIU LED for the E1/T1 link is off, the
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communication between the BBU and the BSC is normal. If the LIU LED is on, the communication
is abnormal.
For the BBUs that are connected in cascading mode, if the LIU LEDs on the E1 ports corresponding
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to level 1 BBU and level 2 BBU are off, the communication is normal. If multiple BBUs are connected
in cascading mode, check the LEDs of the corresponding links.
If the BBU and the BSC form a ring, check the LIU LEDs corresponding to the links in the ring. To
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check the inter-BBU connections, check the corresponding LEDs of the cascaded BBUs.
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7 Commissioning the MBTS by Using Local Maintenance
Step 2.
Then ...
The board properly works according to the
configuration. Then, go to
The board is not configured or software is being
loaded to the board. After the board is configured
or the loading is complete, go to
The E1/T1 link is faulty. Go to
Then ...
The E1/T1 link is normal. End this task.
Terminal and M2000
Step 2.
Step 2.
Step 4.
Step 4.
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