Manual Part 6
EN/LZT 720 0244 Uen R3A
DXU-21
Distribution Switch Unit
Unit Description
The Distribution Switch Unit (DXU) is a unit, which acts as an interface
between the transmission network and the transceivers. It also extracts timing
information from the transmission interfaces and generates a timing reference
for the RBS.
P011947A
Local
Fault
Operational
RBS Fault
Ext Alarms
EPCbus fault
Battery mode
DXU reset
EPC bus
Y7-12
Y 1-6
Port A
Port B
Port B
Port A
Port D
Port C
Port C
Port D
OMT
ESB
GPS
Y link
TD
RD
A
Local
Fault
Operational
RBS Fault
Ext Alarm
EPCbus Fault
EOMbus Fault
DXU reset
Local /remote
Te st
Y7-12
Y 1-6
Port A
Port B
Port B
Port A
Port D
Port C
Port C
Port D
OMT
ESB
GPS
E0M
EPC bus
TD
RD
Y Link
Transmisson OK
Transmisson OK
Transmisson OK
Transmisson OK
Local /remote
E
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