Zte ZXHN H268N - Synchronization Failures

�WhatarereasonsforVDSL2synchronizationfailure(alsoreferredas
linkdownorlinkestablishmentfailure)?
IftheVDSL2suddenlyfailstobesynchronized(linkdown)duringapplica-
tion,usuallytheLinkindicatorontheZXHNH268NwillnotbeON.Itis
suggestedtocheckthefollowingstepsonebyone:
i.Firstcheckthequalityofincomingcablesandincomingcableconnectors.
ii.InstalltheZXHNH268Ncorrectlybasedontheuserguidance.Minimize
thenumberoftaps.
iii.CheckwhetherthetelephonecablesandVDSL2areingoodconnection
orwhetherthetelephonecablesarenormal.
iv.TrytodisconnectthesplitteranddirectlyconnecttheZXHNH268Ntothe
incomingusercableend.Ensuretheproblemisnotduetoimproperin-
stallationorincominguserlinequality.IftheVDSL2canbesynchronized
again,itmeansthatinstallationoftheincomingusersideisimproper.
Pleasereinstallitaccordingtotheuserguide.
v.IftheVDSL2stillfailstobesynchronizedwhentheZXHNH268Niscon-
nectedtotheincomingusercableend,contacttheoperatorstocheck
whetheritisduetoexternallinefailureorZXHNH268Nfailure.
vi.Ifthesplitterproblemisdetermined,calltheoperatorformaintenanceor
replacement.
vii.Iftheproblemisduetotheendofceequipmentfailure,calltheoperator
toconrmit.
viii.ToolongconnectioncablebetweenthesplitterandZXHNH268Nmay
causepooranti-interferenceperformanceandsynchronizationdifculty.
Therefore,theconnectioncableshouldnotbetoolong.