Clearing:Trouble363-206-295 TAP-121
6of5Page1997December1,Issue
Is21. FAULT flashing?orlightedLED
If FLASHING withcontinuethen, 22Step .
If LIGHTED dothen, TAP-106.
Replace22. OLIU (far-endat 363-206-285, DLP-523 notdoestroubleIf).
fiber.opticalincominginistroubleclear,
23. PROCEDURE.THISCOMPLETEDHAVEYOUSTOP.
24.
NOTE:
isrequestswitchingprotectionlineOC-3thatRemember
lightedahavetopossibleisItunidirectional. FAULT anonLED OLIU
thathavestilland OLIU failed,transmitterifexample,(foractive
orlightedanalyzetonecessaryisItreceiving).bestillcouldreceiver
flashing OLIU anreplacingbeforeLEDs OLIU If. ACTIVE isLED
anonlighted OLIU ortransmittingeither(ACTIVE)serviceinisit,
aperformtonecessarybemayItboth.orreceiving switch-line at
sametoreceiveandtransmitbothswitchtoendfaratandendnear
line.
Is FAULT serviceononlyflashingorlightedLED OLIU ononlyors
protection OLIUs?
If YES withcontinuethen, 25Step .
If NO toproceedthen, 32Step .
Is25. ACTIVE onlightedLED OLIU lightedwiths FAULT LEDs?
If YES withcontinuethen, 26Step .
If NO toproceedthen, 27Step .
andCITUse26. rtrv-state endsbothatstatusswitchchecktocommand
andCITUsesystem.of switch-line andswitchresettocommand
tolinesfar-endandnear-bothswitch OLIU lightedwithouts FAULT LED.
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