Board
Optional/
Mandatory
Maximum
Quantity
Slot
Configuration
Restriction
USCU
Optional
1
Slot 1 or slot 0
Preferentially
configured in
slot 1
Configured in
slot 1 in the case
of 1 U dual-
satellite-card (in
this case, slot 0
is also occupied)
shows the typical configurations of the BBU3900 in UO mode.
Figure 3-6
Typical configuration of the BBU3900 in UO mode
BBU3900 in LO Mode
describes the principles for configuring the boards in the BBU3900 in LO mode.
Table 3-4
Principles for configuring the boards in the BBU3900 in LO mode
Board
Optional/
Mandatory
Maximum
Quantity
Slot
Remarks
LMPT
Mandatory
2
Slot 6 or slot 7
Configured only
in slot 7 in the
case of a single
LMPT
LBBP
Mandatory
3
Slots 0 to 3
Configured in a
slot, with slot
priority of slot 3,
slot 1, and slot 2
in the case of a
single LBBP
3 BTS3900 Hardware Configuration
BTS3900
Hardware Description
3-8
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Issue 04 (2011-02-15)