CAUTION
SW1 and SW2 are set to OFF (balanced mode) by default. When the eight E1s are faulty, all the
DIP bits of SW1 and SW2 should be set to ON to rectify faults. SW1 corresponds to E1s No.4
to No.7 and SW2 corresponds to E1s No.0 to No.3.
Table 4-42
DIP switch SW3 on the UTRP
DIP
Switch
DIP Status
Description
1
2
3
4
SW3
OFF
OFF
ON
ON
T1 Mode
ON
ON
OFF
OFF
The E1
impedance is
set to 120
ohms.
ON
ON
ON
ON
The E1
impedance is
set to 75
ohms.
Other settings of the DIP bits
Disabled
UBRI
The Universal Baseband Radio Interface Board (UBRI) provides extended CPRI optical or
electrical ports to implement convergence, distribution, and multi-mode transmission on the
CPRI.
Panel
shows the panel of the UBRI.
Figure 4-30
Panel of the UBRI
Functions
The UBRI performs the following functions:
l
Provides extended CPRI optical or electrical ports
l
Performs convergence, distribution, and multi-mode transmission on the CPRI
BTS3900
Hardware Description
4 BTS3900 Components
Issue 04 (2011-02-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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