6-13
© Copyright 2006 Microwave Data Systems Inc. All Rights Reserved
User Interface Manual
MDS FIVE Series
05-4574A01, Rev. C
STM
RS_B1
IDU
The SDH/SONET Mux/
Demux has a B1 Defect.
Fault detection via polling
of RS_B1_T bit in STM-1
Core. Alternate detection
via Interrupt enabled in
STM-1 core.
N/A
Solid
Major
STM
RS_LOF
IDU
The SDH/SONET Mux/
Demux has a Loss of
Frame Defect. Fault
detection via polling of
RS_LOF_T bit in STM-1
Core. Alternate detection
via Interrupt enabled in
STM-1 core.
N/A
Solid
Critical
STM
RS_OOF
IDU
The SDH/SONET Mux/
Demux has a Out of
Frame Defect. Fault
detection via polling of
RS_OOF_T bit in STM-1
Core. Alternate detection
via Interrupt enabled in
STM-1 core.
N/A
Solid
Critical
STM
RS_TIM
IDU
The SDH/SONET Mux/
Demux has a Trace
Identifier Mismatch
Defect. Fault detection
via polling of RS_TIM_T
bit in STM-1 Core.
Alternate detection via
Interrupt enabled in STM-
1 core.
N/A
Solid
Major
STM MS-
AIS
IDU
The SDH/SONET Mux/
Demux has detected an
AIS at the Multiplexer
Level. Fault detection via
polling of MS_AIS_T bit
in STM-1 Core. Alternate
detection via Interrupt
enabled in STM-1 core.
N/A
Solid
Critical
Table 6-1
Alarm
Affected
Component
Description
LED to RED
Alarm
Code
Severity