User Manual

RBS 2107
External Connections to Transmission Equipment
Optical fibre and MiniLink radio cables are connected to the transmission
equipment through connection field 3. Twisted pair cables are connected to
the transmission equipment through the DF-OVP.
6.2 Test Interface
The RBS 2107 is equipped with test interfaces for the connection of external
equipment.
CLU Self-test button
OMT The Operation and Maintenace
Terminal (OMT) interface is located
on the front of the DXU.
System voltage test The system voltage test port
provides a test point to the system
voltage (+24 V DC). It is located on
the IDM.
6.3 Operator Interface
The Man-Machine Interface (MMI) in the RBS 2107 is consists of indicators and
buttons located on the hardware units in the cabinet.
Indicators Unit Description
Bat disconnect BFU Battery disconnected
Battery mode DXU Indicates that the RBS is running on
battery
EPC bus fault DXU, PSU,
FCU, CCU,
BFU
Communication to superior RU is
lost
External alarm DXU One or more supervised external
alarms are active
Fan fault FCU A fan is faulty
Fault All RUs Fault detected and localised to the
RU
Heater fault CCU The heater is faulty
H/E external fan fault CCU A fan in the external circuit is faulty
H/E internal fan fault CCU A fan in the internal circuit is faulty
Local mode dTRU, DXU The RU is in local mode
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EN/LZT 720 0491 Uen R2A