EXFO FTB-8510B Guia Del Usuario página 914

SONET Tabs
LOP RX (SONET)
RFI-V (Remote Failure Indication - VT): The RFI-V alarm is declared
when bit 4 of the V5 byte contains "1" in five consecutive superframes.
TIM-V (Trace Identifier Mismatch - VT): The TIM-V defect indicates that
the received J2 Trace doesn't match the expected message value. The
TIM-V alarm is only available when Enable TIM-V check box from J2
Trace section has been selected.
The TIM-V alarm result is only available when TIM-V from J2 Trace
section has been enabled.
PLM-V (Payload Label Mismatch - VT): The PLM-V is declared upon
receipt of five consecutive superframes with mismatched VT Signal
(bits 5 through 7 of the V5 byte are "000", "001" or "111").
UNEQ-V (Unequipped - VT): UNEQ-V is declared when bit 5 through 7
of the V5 byte contain "000" for five consecutive superframes.
ERDI-VSD (Enhanced RDI - VT Server Defect): The ERDI-VSD alarm is
declared when bits 5, 6, and 7 of the Z7 byte contain the "101" pattern,
and bit 8 of the V5 byte contain "1", in five consecutive VT superframes.
ERDI-VCD (Enhanced RDI - VT Connectivity Defect): The ERDI-VCD
alarm is declared when bits 5, 6, and 7 of the Z7 byte contain the "110"
pattern, and bit 8 of the V5 byte contain "1", in five consecutive VT
superframes.
ERDI-VPD (Enhanced RDI - VT Path Payload Defect): The ERDI-VPD
alarm is declared when bits 5, 6, and 7 of the Z7 byte contain the "010"
pattern, and bit 8 of the V5 byte contain "0", in five consecutive VT
superframes.
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