User Manual
Airbridge cBTS3612 CDMA Base Station
System Description
5 System Configuration
5-2
0
B
C
I
M
1
B
C
I
M
2
B
C
P
M
3
B
C
P
M
4
B
C
P
M
5
B
C
P
M
6
B
C
P
M
7
B
C
P
M
8
B
R
D
M
B
R
D
M
B
C
K
M
B
C
K
M
B
R
D
M
B
R
D
M
B
C
P
M
B
C
P
M
B
C
P
M
B
C
P
M
B
C
P
M
B
C
P
M
B
R
D
M
B
R
D
M
Fan box 1
Power distribution box
P
S
U
B
H
P
A
B
T
R
M
RLDU
C
D
U
10
11
12 13 14 15 16 17 18 19 20 21
9
Baseband
subrack
P
S
U
P
S
U
P
S
U
P
S
U
RLDU
RLDU
C
D
U
C
D
U
C
D
U
C
D
U
C
D
U
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
B
H
P
A
B
T
R
M
Fan box 2
Fan
subrack
PSU
subrack
RF
subrack
RLDU
subrack
CDU/DFU
subrack
RF
subrack
Figure 5-1
Configuration of a basic cabinet
Difference between basic cabinet and extended cabinet: Boards are not necessary
in the baseband subrack of the extended cabinet , and the fans also are not
necessary in fan subrack.
The front view of a basic cabinet is shown in Figure 5-2.