EXFO FTB-8510B Guia Del Usuario página 1122

Next-Generation Tabs
LCAS - Source
Alarm Analysis
TLCT (Total Loss of Capacity Transmit): The TLCT alarm is declared
when the number of active member equal zero while the number of
provisioned member is bigger than zero.
PLCT (Partial Loss of Capacity Transmit): The PLCT alarm is declared
when the PLCT Threshold is reached while both numbers of active
member and provisioned member are bigger than zero.
FOPT (Failure of Protocol Transmit): The FOPT alarm is declared when
a UMST alarm is present.
UMST (Unexpected Member Status) The UMST alarm is declared when
a persistent detection of the MST (MST=OK), while no RS-Ack is
pending, for a member that carries the IDLE Control (CTRL).
SQ in UMST (Sequence Indicator in Unexpected Member Status): Lists
the SQ number(s) in the UMST.
Note: Refer to Alarm/Error Measurements on page 47 for H/C LEDs and Seconds
information.
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