Huawei BBU3900 - Monitoring Principles of the Cabinets; Figure 2-4 Slot Assignment for the UPEU and UEIU; Figure 3-1 BBU3900; Table 2-3 Ports on the UPEU and UEIU

Figure 2-4 Slot assignment for the UPEU and UEIU
Table 2-3 lists the ports on the UPEU and UEIU.
Table 2-3 Ports on the UPEU and UEIU
Slot Board Label Connector Quantity Description
Slot19 UPEU EXT-ALM0 RJ-45
connector
1 Port for
Boolean
inputs 8 to 11
EXT-ALM1 RJ-45
connector
1 Port for
Boolean
inputs 12 to
15
MON0 RJ-45
connector
1 Port for
RS485 input
0
MON1 RJ-45
connector
1 Port for
RS485 input
1
Slot18 UEIU
(optional)
EXT-ALM0 RJ-45
connector
1 Port for
Boolean
inputs 0 to 3
EXT-ALM1 RJ-45
connector
1 Port for
Boolean
inputs 4 to 7
MON0 RJ-45
connector
1 Port for
RS485 input
0
MON1 RJ-45
connector
1 Port for
RS485 input
1
2.3 Monitoring Principles of the Cabinets
The DBS3900 cabinet is monitored by various boards. The boards collect alarms from sensors
and fans, and then transmit the alarm signals to the MON port on the BBU through the RS485
serial bus. In this manner, the boards monitor the cabinet.
BBU3900
Hardware Description 2 DBS3900 Monitoring System
Issue 11 (2010-11-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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