4.1 BBU3900 Equipment
This describes the BBU3900 equipment in terms of the appearance, boards and their panels,
module, LEDs, ports, and engineering specifications.
The BBU3900 has the following functions:
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Provides ports for communication between the base station and the BSC/RNC
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Provides CPRI ports for the communication with the RF modules
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Provides USB ports, which facilitates automatic base station upgrade by allowing a USB
disk to be used for software installation and data configuration
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Provides an OM channel between the base station and the LMT or the M2000
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Processes uplink and downlink data
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Manages the entire dual-mode system in terms of OM and signaling processing
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Provides the system clock
The BBU3900, which has a case structure, is 19 inches wide and 2 U high.
4.1.2 Boards and Module of the BBU3900
4.1.1 Exterior of the BBU3900
The BBU3900, which has a case structure, is 19 inches wide and 2 U high.
The dimensions (W x D x H) of the BBU3900 are 442 mm x 310 mm x 86 mm.
shows the BBU3900.
Figure 4-1
BBU3900
The Electronic Serial Number (ESN) is unique to a network element (NE) for identification, and
is used during the commissioning of the base station.
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If there is a label on the FAN unit of the BBU, the ESN is printed on a label and the mounting
ears of the BBU.
shows the position of the ESN.
BTS3900
Hardware Description
4 BTS3900 Components
Issue 04 (2011-02-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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