OTN Tabs
SONET/SDH Application
157
ODU RX
Alarm Analysis
³
ODU-LOFLOM
(ODU - Loss of Frame Loss Of Multiframe): Indicates
that OOF is present for at least 3 ms. Only available for mapped ODU1
in ODU2.
³
ODU-AIS
(ODU - Alarm Indication Signal): Indicates that the STAT
information detected, PM byte 3, bits 6 to 8 is “111” for at least
3 consecutive frames.
³
ODU-OCI
(ODU - Open Connection Indication): Indicates that the STAT
information detected, PM byte 3, bits 6 to 8 is “110” for at least 3
consecutive frames.
³
ODU-LCK
(ODU - Lock): Indicates that the STAT information detected,
PM byte 3, bits 6 to 8 is “101” for at least 3 consecutive frames.
³
ODU-TIM
(ODU - Trace Identification Mismatch): ODU-TIM is declared
when the received SAPI and/or DAPI do not math the expected SAPI
and/or DAPI. This alarm is only available when the Enable TIM SAPI
and/or DAPI check boxes are selected from
ODU TTI/FTFL TX
on
page 154.
³
ODU-BDI
(ODU - Backward Defect indication): ODU-BDI is declared
when the BDI bit in the PM overhead field (byte 3, bit 5) is “1” for at
least 5 consecutive frames.
³
ODU-FSF
(ODU - Forward Signal Fail): ODU-FSF is declared when the
received FTFL byte 0 is “00000001”.
³
ODU-BSF
(ODU - Backward Signal Fail): ODU-BSF is declared when
the received FTFL byte 128 is “00000001”.
³
ODU-FSD
(ODU - Forward Signal Degrade): ODU-FSD is declared
when the received FTFL byte 0 is “00000010”
³
ODU-BSD
(ODU - Backward Signal Degrade): ODU-BSD is declared
when the received FTFL byte 128 is “00000010”.
Содержание FTB-8100 Series
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