The WRFUs and LRFUs in a UMTS+LTE base station use the same CPRI cable connection as
the RFUs in a UMTS only base station and LTE only base station respectively, as shown in
.
Figure 5-73
CPRI port connection principles
5.2.4 Monitoring Signal Cable Connections
The monitoring signal cable connections vary according to the BTS3900 cabinet type. The cable
connections are also affected by the number of UPEUs and UEIUs configured in the BBU.
NOTE
If any device is not configured at the site, neglect the device and its cable connection.
Monitoring signal cable connections of the BTS3900 (-48 V DC)
The monitoring signal cable connections of the BTS3900 (-48 V DC) are shown in
5 BTS3900 Cables
BTS3900
Hardware Description
5-50
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 04 (2011-02-15)