User Manual

Architecture
Nortel Networks Confidential
3–32
PE/DCL/DD/0063
411–9001–063
Standard 12.07/EN September 2000
GSM/BSS V12
AMNU
DCU8
ÌÌÌÌÌ
Ì
ÌÌÌ
Ì
Ì
ÌÌÌ
Ì
ÌÌÌÌÌ
RX
Test Ethernet
BDT
DRX digital
FH
bus
Privte PCM
Radio DRX
Logical TX
ÌÌÌÌ
Ì
ÌÌ
Ì
Ì
ÌÌ
Ì
ÌÌÌÌ
TX
Power
supply
board
ÌÌÌÌÌÌ
Ì
ÌÌÌÌ
Ì
Ì
ÌÌÌÌ
Ì
ÌÌÌÌÌÌ
+ 5.4V
+ 12V
– 12V
+ 48Vdc
Frequency
reference unit
Figure 3–9 DRX board: functional block diagram