6-17
© Copyright 2006 Microwave Data Systems Inc. All Rights Reserved
User Interface Manual
MDS FIVE Series
05-4574A01, Rev. C
STM TU-
AIS lkm
IDU
The SDH/SONET Mux/
Demux TU number ‘x’
has an AIS. Fault
detection via polling of
TU_AIS_T bit in STM-1
Core. Where ‘lkm’ is the
TU index as LKM
numbering. Alternate
detection via Interrupt
enabled in STM-1 core.
N/A
Solid
Critical
STM TU-
LOP lkm
IDU
The SDH/SONET Mux/
Demux TU number ‘x’
has a Loss of Pointer
Defect. Fault detection
via polling of TU_LOP_T
bit in STM-1 Core. Where
‘lkm’ is the TU index as
LKM numbering.
Alternate detection via
Interrupt enabled in STM-
1 core.
N/A
Solid
Critical
STM LP-
UNEQ lkm
IDU
The SDH/SONET Mux/
Demux LP number ‘x’ is
Unequipped. Fault
detection via polling of
LP_UNEQ_T bit in STM-
1 Core. Where ‘lkm’ is the
LP index as LKM
numbering. Alternate
detection via Interrupt
enabled in STM-1 core.
N/A
Solid
Major
STM LP-
TIM lkm
IDU
The SDH/SONET Mux/
Demux LP number ‘x’ has
a Trace Identifier
Mismatch. Fault detection
via polling of
LP_TM_TIM_T bit in
STM-1 Core. Where ‘lkm’
is the LP index as LKM
numbering. Alternate
detection via Interrupt
enabled in STM-1 core.
N/A
Solid
Major
Table 6-1
Alarm
Affected
Component
Description
LED to RED
Alarm
Code
Severity