Ericsson RBS 2106 Reference Manual page 371

46.4.1 Supervision of Buses
Purpose
The purpose of this function is to check the integrity of the data on the
buses.
Preconditions and Initiation
The function is automatically initiated at the start of the functions
driving and receiving information on the buses.
Description
Receive and transmit bus supervision encompasses buses between three
or more RUs or major functional blocks. The address or data buses of
the processors are not supervised by this specific function. The
supervision of the buses is achieved by comparison of data sent to the
bus driving function with the information on the bus, and by control
information embedded in the data. The function looks for expected
traffic on the bus. Traffic must be generated in absence of normal
traffic. Disturbances are reported to fault handling for filtering and fault
detection.
46.4.2 Supervision of Cables
Purpose
To detect removal of a cable.
Preconditions and Initiation
Initiates automatically at start of application software.
Description
All cables between the RUs are supervised. Removal of a cable during
operation is always detected by one of the following conditions:
•
•
•
It is possible to disable and enable the fault reporting for the cables
listed below using the OMT.
•
•
•
•
When the OMT is disconnected, the fault reporting is always enabled.
EN/LZT 720 0008 P2A
2001-11-28
No current in the cable
Missing logical signal
Missing traffic message
CDU TRU PFWD cables
CDU TRU PREF cables
FU CU PFWD cables
FU CU PREF cables
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Self Test and Supervision
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