l When both the RFU and RRU support the GSM mode, the BBU3900 must be configured
with a GTMUb. In addition, the RFUs supporting the GSM mode are connected to the
GTMUb, and the RRUs supporting the GSM mode are connected to the UBRI.
NOTE
When a BTS3900L (Ver.C) is configured with RFUs and RRUs, a DCDU-11B is installed on a wall to
distribute power to RRUs.
Cabinet Configurations for a Single- or Dual-Mode Base Station
Figure 3-4 shows the interior of a single- or dual-mode BTS3900L.
Figure 3-4 Single- or dual-mode base station
Cabinet Configurations for a Triple-Mode Base Station
Figure 3-5 shows the interior of a triple-mode BTS3900L..
BTS3900L (Ver.C)
Installation Guide
3 Information About the Installation
Issue 07 (2013-11-08) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
13
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