Ericsson RBS 2106 Hardware Reference Manual page 338

4(10)
4 Function Description
13 MHz test
Ext. Sync. Source (GPS)
Ext. Sync. Source (ESB)
Ext. O&M (EOM)
O&M Terminal (OMT)
Transm.
lines
G.703-A
G.703-B
G.703-C
G.703-D
Ylinks (12 pcs)
Figure 1 DXU-21, block diagram
EN/LZT 720 0244 R1A
Part of
timing
system
OVCXO+DAC
CPU System
MMI
EPC bus
Transm.
Communication
Interface
switch system
Controller
Compact
OPT-inputs
Flash
Card
Interface
OPT-outputs
External alarms
Vcc for backplane memory
Cabinet LEDs
Rack/Shelf/unit pos
Ext. Ref source
DXU
IOM-bus
Timing bus
Local bus
Local bus
Power
+24 V
supply
P007457C