RTRV-ALM 21of9Page RTRV-ALM
DescriptionReportDescriptionReport
(Contd)DescriptionsRTRV-ALM11-3.Table
MeaningDescription
activemodeholdover mode.synchronizationholdoverinissystemThe
causes:Likely
holdovertoswitchedmanuallywassystemThea.
the(withmode switch-sync andcommand)
resetbeennothasswitchthe
holdovertoswitchedautomaticallysystemTheb.
asreferences,timingtheoffailuretoduemode
follows:
cleared.nothavefailuresreferenceThe1.
nonrevertiveforprovisionedissystemThe2.
switching.modesynchronization
line-timedforprovisionedissystemThe3.
circuitOLIUorlineopticaltheandoperation
anindicatingmessageaorfailed,haspack
onreceivedbeenhasproblemclockupstream
(Seeline.opticaltheofbitsmessagesyncthe
the rtrv-sync command.)
messagesyncforprovisionedissystemThe4.
whichfromsystemupstreamthebutsignaling,
syncforprovisionedbeennothasline-timesit
becanconditionThesignaling.message
thesystemsbothprovisioningbycleared
the(Seesame. set-sync and rtrv-sync
commands.)
ofoneleastatrepairingbyclearedbecanconditionThe
resettingandfailed)areboth(ifreferencestimingthe
thewithswitchprotectionmodesynchronization
command switch-sync:s=mode,pri=reset aIn.
alsocanmodesynchronizationthesystem,officecentral
point.controlTBOSawithresetbe
LOSDS1DSX)(frominc. DS1theinreceivedarezerosconsecutive128leastAt
theatenergytheorDSX-1,thefromincomingsignal
threshold.presetabelowisinputDS1
orequipmentupstreamoffailureHardcauses:Likely
isinputDS1TheDSX-1).the(towardsfacility
equipmentDSX-1;theorbackplanetheatdisconnected
DSX-1.atremovedorfailedis
11-402 2000June3Issue FiberReachDDM-2000
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