Zte ZXMW NR8250 - 134237733 Rs-Lof

Chapter2Alarm
EffectontheSystem
TheE1signalcarriedbytheTUislost,andtheserviceisinterrupted.
PossibleCauses
1.TheinputE1cableisconnectedreverselyorbroken.
2.TheconnectionbetweenE1cableandexternaldevice(DDF)fails.
3.E1portisfaulty.
HandlingProcedure
1.CheckwhethertheE1cableisbrokenorconnectedincorrectly.
lIfyes,replacetheElcableorcorrectlyconnectit.
lIfno,gotostep2.
2.CheckwhethertheequipmentconnectedtoE1cablesuchasDDFisworkingproperly.
lIfyes,gotostep2.
lIfno,removetheequipmentfaults.
3.Ifthealarmpersistsaftertheprecedingsteps,theE1portmaybefaulty.Replacethe
RTUboard.
2.2.7134237733RS-LOF
AlarmProperty
lAlarmCode:134237733
lAlarmInformation:Thealarmindicatesthatinterruptionoccursattheregenerator
section.Thelocalenddoesnotreceivethesignalfromtheremoteend.
lAlarmLevel:Critical
lAlarmType:CommunicationsAlarm
Sub-codeDescription
lSub-code1:Opticalport1ontheRTUBboard;
lSub-code2:Opticalport2ontheRTUBboard.
EffectontheSystem
TheboardcannotidentifythedataframeforthereceivedSDHsignal,andtheserviceis
interrupted.
PossibleCauses
1.Theexternalbercable,pigtailorcouplerisfaulty.
2.TheclockcongurationofNR8250isdifferentfromtheclockcongurationofthe
upstreamequipment.
3.TheopticalmoduletypeoftheRTUboardisnotmatched.
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SJ-20111008094748-008|2012–05–30(R1.1)ZTEProprietaryandCondential