Bit position represents the different types of alarm for ASC: bit 0: ShelfFunctionModuleState (BNM only) (failed/boot/mismatch/heldinReset) bit 1: LineModuleState (BNM only) (notPresent/invalid) bit 2: ASMPhysicalAlarmState (BNM only) bit 3: ATMLMIFailure (ASC only) bit 4: LineAlarmState (BNM only) bit 5: LineStatisticalAlarmState (BNM only) bit 6: PLCPAlarmState (BNM only) bit 7: PLCPStatisticalAlarmState (BNM only) bit 8: SmConnectionFailureAlarm for SM: bit 0: ShelfFunctionModuleState (failed/boot/mismatch/heldinReset) bit 1: LineModuleState (notPresent/invalid) bit 2: PortLMIFailure bit 3: LineAlarmState bit 4: LineStatisticalAlarmState bit 5: FrameRelayPortState (RemoteLoopback/ FailedDueToLine/ FailedDueToSig) bit 6: ChannelState

for PXM/SRM Only (MGX8850 Platfrom): Only those marked with SRM are valid for both PXM/SRM. The rest are valid only for PXM. bit 0 : ShelfFunctionModuleState bit 1 : Backcard Line Module (SRM/PXM) This Alarm is generated when the Line Module (Trunk Backcard) is removed or goes to a mismatch state(or backcard type is unknown). bit 2 : Backcard UIModule This Alarm is generated when the UI backcard is removed or goes to a mismatch state (or backcard type is unknown). bit 3 : ASM Physical Alarm This specifies whether any of the environmental monitoring components like Temperature, Voltage Supply, Fan Speed have gone into alarm. bit 4 : ATM LMI Failure bit 5 : Line Alarm (SRM/PXM) bit 6 : Line Statistical Alarm (SRM/PXM) bit 7 : Lines Alarm (SRM/PXM) bit 8 : PLCP Alarm bit 9 : PLCP Statistical Alarm bit 10 : Connections exist on removed SM bit 11 : Disk related Failure on first PXM slot bit 12 : Disk related Failure on second PXM slot The Disk Alarms are generated when any of the file operations on Disk like open,read,write, lseek etc fail. VSM Alarms bit 13 : Port LMI Failure bit 14 : Port State Alarm bit 15 : Channel Shelf Alarm

bit 16 : Taskmon Task Suspended bit 17 : Excess Power Consumption bit 30 : bit set(1) major alarm, else (0) minor alarm