DIP
Switch
DIP Setting
Description
1
2
3
4
ON
OFF
ON
OFF
Supporting E1 bypass
of level-2 cascaded
base stations
OFF
OFF
ON
OFF
Supporting E1 bypass
of level-3 cascaded
BTSs
ON
ON
OFF
OFF
Supporting E1 bypass
of level-4 cascaded
BTSs
OFF
ON
OFF
OFF
Supporting E1 bypass
of level-5 cascaded
BTSs
3.1.9 LMPT
The LTE main processing and transmission unit (LMPT) manages the entire eNodeB system in
terms of OM and signaling processing and provides system clock for the BBU3900.
Specifications
lists the specifications of the LMPT.
Table 3-39
Specifications of the LMPT
Board
Mode
Transmissi
on Mode
Number of
ports
Port
Capacity
Full/Half-
Duplex
LMPT
LTE
Transmissio
n over FE/
GE optical
ports
2
10 Mbit/s,
100 Mbit/s,
and 1000
Mbit/s
Full-duplex
Transmissio
n over FE/
GE electrical
ports
2
10 Mbit/s,
100 Mbit/s,
and 1000
Mbit/s
Full-duplex
The following table lists the signaling specifications of the LMPT.
BTS3900C (Ver.C)
Hardware Description
3 BTS3900C Modules
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