otsSpanlossPowerOutOfSpecicationLow
Enty Type Severity
Service
Aected
Direcon Locaon Descripon
ots crical service-
aecng
receive NEND SPANLOSS Out of Specicaon–Low
Probable Cause Suggested Correcve Acon
â– The threshold level has been improperly
set.
■Aenuaon on exisng span has
decreased.
1. Verify the proper threshold levels with local standards.
2. If needed, reset the PM threshold to correct.
3. Follow local pracces to check the physical
characteriscs of the exisng span.
payloadMissingIndication
Enty Type Severity
Service
Aected
Direcon Locaon Descripon
oms warning service-
aecng
receive NEND Payload Missing Indicaon
Probable Cause Suggested Correcve Acon
■No opcal signal is detected in any of
the OCH carriers. This funcon is
implemented through the OSC.
■No opcal signal is detected in the OTS
payload. PMI suppresses the WDM
lossOfSignal alarm at the far end.
Clear the trouble upstream that is prevenng the node from
receiving PMI reports from its provisioned channels.
portLossOfLight
Enty Type Severity
Service
Aected
Direcon Locaon Descripon
Port (Edge)/PIL1-3PS2 crical service-
aecng
transmit NEND Port Loss of Light: TYPE = <unit type>
Probable Cause Suggested Correcve Acon
A Loss of Light (LOL) has occurred on the
receive side of the edge port and the
admin-status is down.
Verify the local receive and upstream transmit level.
System Maintenance
Trouble Clearing
322
Release 19.1.1 · Issue 1.1, May 2021
Fujitsu and Fujitsu Customer Use Only