Maintenance Description
Issue 8.0 July 2002
9-9
Table 9-1. Incoming Signals and Monitored Conditions
Incoming Signal Level Monitored Conditions
OC-48* Alarm Indication Signals (AIS)
Automatic Protection Switch (APS) Byte Failure
APS Default Byte†â€
B1 Parity Error
Invalid F-Byte
Line RFI/Yellow
Loss of Frame (LOF)
Loss of Signal (LOS)
Signal Degrade (SD)
Signal Fail (SF)
OC-12*†Alarm Indication Signals (AIS)
Automatic Protection Switch (APS) Byte Failure
Line RFI/Yellow
Loss of Frame (LOF)
Loss of Signal (LOS)
STS Loss of Pointer (LOP) (from OC-12)
Signal Degrade (SD)
Signal Fail (SF)
OC-3†‡ Alarm Indication Signals (AIS)
Automatic Protection Switch (APS) Byte Failure
Line RFI/Yellow
Loss of Frame (LOF)
Loss of Signal (LOS)
Path Integrity Failure
STS Loss of Pointer (LOP) (from OC-3)
Signal Degrade (SD)
Signal Fail (SF)
DS3§ Loss of Signal (LOS) (from DSX)
Signal Degrade (SD) (from DSX)
Alarm Indication Signals (AIS) (from OC-48)
Loss of Frame (LOF) (from OC-48)
Path RFI/Yellow (from OC-48)
STS Loss of Pointer (LOP) (from OC-48)
Path Integrity Failure‡
Path Unequipped
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