Test Results
Power Blazer 399
Alarms/Errors Overview
DS1
Note: For Wander test application only AIS and OOF alarms are supported.
Alarms
AIS (Alarm Indication Signal)
RX: An unframed all-ones signal is received.
OOF (Out-OF-Frame)
RX: Four consecutive frame bit errors are detected.
RAI (Yellow) (Remote Alarm Indication)
RX:
SF framing: Bit 2 in each timeslot contains “0”.
ESF framing: Eight “ones” followed by eight “zeros” pattern is
received continuously in the data link (FDL).
Errors
Framing Bit
RX: An incorrect value appeared in a bit position reserved for framing.
CRC-6 (Cyclical Redundancy Check) is only available with ESF
framing.
RX: One or more bit errors have been detected in a block of data
through cyclical redundancy check.
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