Checking The Transmission Between The Bbu And The Drfu; Checking The Transmission Between The Bbu And The Bsc - Huawei BTS3900 GSM Commissioning Manual
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Also See for BTS3900 GSM:
- Commissioning manual (129 pages) ,
- Installation manual (20 pages)
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6 Checking the Transmission and Networking
6.1 Checking the Transmission Between the BBU and the
DRFU
By checking the link status, you can rectify the fault caused by abnormal connection, thus
ensuring normal communication between the BBU and the DRFU.
Procedure
Step 1 Check the status of the CPRI0 LED on the GTMU panel and the status of the CPRI0 and
CPRI1 LEDs on the DRFU panel.
If...
All the LEDs are in normal states (the
green LEDs are on),
Some LEDs are not in normal states.
The normal state is green LED on,
Step 2 Check the connection between the cascaded DRFUs.
1.
2.
Step 3 Check the connection between the DRFU and the BBU.
1.
2.
Step 4 Repeat
panel and other DRFUs.
----End
6.2 Checking the Transmission Between the BBU and the
BSC
This describes how to check the status of the LEDs on the GTMU panel, how to check the
connection of the E1 cable and E1 surge protection transfer cable, and how to rectify the fault
caused by improper connections.
6-2
NOTE
The status of the LED corresponding to the CPRI port that is not in use should be Off.
Check that the signal cables between cascaded DRFUs are securely connected to the
CPRI0 and CPRI1 ports.
Check the SFP male connectors at both ends of the signal cable between cascaded DRFUs.
If any connector is damaged, replace it.
Check that one end of the CPRI signal cable is securely connected to the CPRI0 port on
the DRFU, and the other end is securely connected to the CPRI port on the BBU.
Check the SFP male connectors at both ends of the CPRI signal cable. If any connector is
damaged, replace it.
Step 1
through
Step 3
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Then...
The communication between the CPRI0 port on
the BBU and the DRFU is normal. Go to
The communication between the CPRI0 port on
the BBU and the DRFU is not normal. Go to
2.
to check the transmission between other CPRI ports on the GTMU
BTS3900 GSM
Commissioning Guide
Step
4.
Step
Issue 03 (2008-07-15)
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