Table 5-46
Transmission cables for a UMTS+LTE base station in IP over FE/GE common
transmission mode (1)
SN
Description
T1
For details, see
T2
For details, see
shows the transmission cable connections for a UMTS+LTE base station when the
FE/GE electrical port on the LMPT is connected to the transmission equipment and the FE/GE
optical port on the LMPT is interconnected to the FE/GE optical port on the WMPT.
Figure 5-42
Transmission cable connections for a UMTS+LTE base station in IP over FE/GE
common transmission mode
Table 5-47
Transmission cables for a UMTS+LTE base station in IP over FE/GE common
transmission mode
SN
Description
T1
.
T2
For details, see
Route Backup Mode with IP Common Transmission
In route backup mode, the FE ports of one type (either optical or electrical ports) on the WMPT
and LMPT are interconnected, and the FE ports of the other type (either optical or electrical
ports) on the two boards are connected to the transmission equipment.
In a UMTS+LTE base station, the route backup transmission mode has the following
characteristics:
l
IP transmission is applied. The WMPT and LMPT are connected to the transport network
through the primary channel.
l
The WMPT and the LMPT are interconnected through FE ports on their panels.
l
If the primary channel is faulty, the secondary channel takes over. After the primary channel
is restored, the route is switched back to the primary one.
5 BTS3900 Cables
BTS3900
Hardware Description
5-32
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Issue 04 (2011-02-15)