SN
Description
P7
For details, see
5.5.4 Power Cable for the Fan Box
P8
For details, see
P11, P12
For details, see
5.5.2 Power Cable for the DCDU-01
L, N
For details, see
5.5.1 Input Power Cable for the Cabinet
.
5.2.2 Transmission Cable Connections
The base station supports the GSM only, UMTS only, LTE only, GSM+UMTS, GSM+LTE,
and UMTS+LTE modes. In different modes, board configurations and transmission cable
connections are different.
Transmission Cable Connections in the GSM Only Base Station
In a GSM base station, the E1/T1 cable, FE/GE Ethernet cable, or FE/GE optical cable can be
used for data transmission.
Transmission over the E1 Cable
shows the transmission cable connections when the E1/T1 cable is used for data
transmission in a GSM only base station where only the GTMU is configured as the transmission
board in the BBU3900.
Figure 5-4
E1/T1 cable connections
describes the cable connections.
Table 5-9
E1/T1 cable connections
Cable Number
Cable Description
T1
See
shows the transmission cable connections when the E1/T1 cable is used for data
transmission in a GSM only base station where the GTMU and UTRP4 are configured as
transmission boards in the BBU3900.
Figure 5-5
E1/T1 cable connections
5 BTS3900 Cables
BTS3900
Hardware Description
5-12
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Issue 04 (2011-02-15)