Test Results
446 88000 Series
Alarms/Errors Overview
OTUCn
Note: Available with FlexO BERT.
Alarms
AIS (Alarm Indication Signal)
RX: The STAT bits in the SM overhead field (byte 3, bits 6 to 8) of the
OTUC #1 are “111” for at least 15 consecutive frames.
TX: Generates all ones over each OTUC of the signal excluding the OH
framing (FAS and MFAS).
IAE (Incoming Alignment Error)
RX: The STAT bits in the SM overhead field (byte 3, bits 6 to 8) of the
OTUC #1 are “010” for at least 15 consecutive frames.
TX: Generates “010” for the STAT bits in the SM overhead field (byte 3,
bit 6 to 8) of the OTUC #1 continuously.
BDI (Backward Defect Indication)
RX: The BDI bit in the SM overhead field (byte 3, bit 5) of the OTUC #1
is “1” for at least 15 consecutive frames.
TX: Generates “1” for the BDI bit in the SM overhead field (byte 3, bit 5)
of the OTC #1 continuously.
BIAE (Backward Incoming Alignment Error)
RX: The BEI/BIAE bits in the SM overhead field (byte 3, bits 1 to 4) are
“1011” for at least 3 consecutive frames.
TX: Generates “1011” for the BEI/BIAE bits in the SM overhead field
(byte 3, bits 1 to 4) of OTUC continuously.
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