Chapter2AlarmMessage
urationsarenotcorrect,opticalpathisabnormalandthedata
transmissionabnormalityoccursonbit.
Inuence
Thetransmissiondataisabnormal.
Recommended
Operations
ChecktheberconnectionbetweenONUmoduleandOLTmodule.
ThisalarmiscalledbiterrorratealarminEPONproject.Thisalarm
canbeopenedandclosedbyusingcommandandsetalarmswitch,
alarmmonitordirectionandalarmthreshold.Indefault,thisalarm
isenabledandthemonitordirectionisup-down-link,thevalueis
10(unit:10
-9
).Ifthealarmneedtobeclosedcongure“alarm
bit-error-ratedisable“onOLTinterface.Ifthemonitordirection
andthresholdneedtobemodiedcongurethecommandalarm
bit-error-ratedirection<direction>tthrressholld<thresho
ld>ontheOLTinterface.
AlarmDescription
Prototype
"Eponalarmbit-error-rateoccourat%din%sdirection!"
%dindicatebit-error-ratevaluewhenalarmoccurs.
%sindicatethemonitordirectionwhenbit-error-ratealarmoccurs.
Themonitordirectionsareasfollows:
uplinkindicatemonitordirectiononlymonitortheuplinkcommuni-
cationdataforwardedfromONUtoOLT .
downlinkindicatemonitordirectiononlymonitorthedownlinkcom-
municationdataforwardedfromONUtoOLT .
up-down-linkindicatemonitordirectionmonitortheuplinkand
downlinkcommunicationdataforwardedfromONUtoOLT .
Example:
18:57:3008/26/2008UTCalarm33280occurred%EPON%Epon
alarmbit-error-rateoccourat100000inuplinkdirection!sentby
NPC3
AlarmDescription
BiterroroccursincommunicationbetweenONUmoduleandOLT
module.
SupportedDevices
EPONprojectof4822
33281
MessageNo.
33281
DefaultSecurity
Level
5
AlarmType
"CommunicationAlarm"
NMLevel
5
Cause
BecausetheattenuationoftheopticalpathbetweenONUandOLT
isoutofnormalrangeorONUandOLTopticalparametercong-
urationsarenotcorrect,opticalpathisabnormalandthedata
frametransmissionisabnormal.
Inuence
Thetransmissiondataisabnormal.
Recommended
Operations
ChecktheberconnectionbetweenONUmoduleandOLTmodule.
ThisalarmiscalledframeerrorratealarminEPONproject.This
alarmcanbeopenedandclosedbyusingcommandandsetalarm
CondentialandProprietaryInformationofZTECORPORATION135