Zte ZXMW NR8250 - 134317741 Loopback State in if or Modem Port

ZXMWNR8250AlarmandNoticationHandlingReference
Sub-codeDescription
None
EffectontheSystem
ThesystemclockPLLcannotbelockedproperlywhenthe1588referenceclocksource
istakenasthesystemreferenceclocksource.Thesystemperformschangeovertoother
referenceclocksourcethroughtheclockprotectionfunction.
PossibleCauses
lThelocalclockisfaulty.
lThe1588Masterclockattheremoteendisfaulty.
HandlingProcedure
1.ResettheRCUBboardandcheckwhetherthealarmiscleared.Ifno,gotostep2.
2.ReplacetheRCUBboard.
3.Ensurethatthe1588Masterclockattheremoteendoperatesproperly.
2.1.23134317741LoopbackstateinIFormodemport
AlarmProperty
lAlarmCode:134317741
lAlarmInformation:Thealarmisreportedifloopbackisperformedattheradiolink
port,thatis,whentheportonMUisintheloopbackstatus(IF/modulationand
demodulation).
lAlarmLevel:Major
lAlarmType:EquipmentAlarm
Sub-codeDescription
lSub-code2.Settingmodulationanddemodulationloopback;
lSub-code4.SettingIFloopback.
EffectontheSystem
Thetrafcisinterruptedwhentheradioportisintheloopbackstatus.
PossibleCauses
1.Theloopbackfunctionisenabledfortestingormaintenance.
2.Theboardthatreportsthealarmisfaulty.
HandlingProcedure
1.Checkwhetherloopbackissetfortestormaintenance.
2-18
SJ-20111008094748-008|2012–05–30(R1.1)ZTEProprietaryandCondential