Chapter2Alarm
HandlingProcedure
1.CheckwhethertheagofC2signalsentfromNR8250upstreamequipmentiscorrect,
whichis0X12forVC4and0x02forVC12.
lIfyes,gotostep2.
lIfno,modifytheconguration.
2.ThealarmiscausedbyRTUBboardfailure.Replacetheboard.
2.2.20134237754TU-PLM
AlarmProperty
lAlarmCode:134237754
lAlarmInformation:Thealarmisreportediftributaryunitsignalagismismatched.
lAlarmLevel:Major
lAlarmType:CommunicationsAlarm
Sub-codeDescription
Eachsubcoderepresentsatimeslot.Theformer63timeslotsareusedforopticalport
1,andthelatter63timeslotsareusedforopticalport2.
EffectontheSystem
AlltherelayreceivesignalstransmittedontheSDHlinkmaybeinterrupted.
PossibleCauses
1.ThesignalagreceivedbyNR8250equipmentisinconsistentwiththatsentbythe
upstreamequipment.
2.TheRTUBboardthatreportsthealarmisfaulty.
HandlingProcedure
Contactthenetworkengineer.
2.2.21134237756TU-LOP
AlarmProperty
lAlarmCode:134237756
lAlarmInformation:Thealarmisreportediftributaryunitpointerislost.
lAlarmLevel:Major
lAlarmType:CommunicationsAlarm
2-39
SJ-20111008094748-008|2012–05–30(R1.1)ZTEProprietaryandCondential