At the end of each step wait to see if the fault clears. If not, continue with the next step. It
may take several seconds for channel power out of range and channel absent alarms to
clear after each step.
...................................................................................................................................................................................................
1
Perform the procedure “Path Power Trace” (p. 3-8) to identify the network path the
particular alarmed channel is traversing.
...................................................................................................................................................................................................
2
Find the source of the channel's service and ensure that the add cross connect is
administratively up and that there are no Wavelength Tracker or channel
alarms/conditions for the associated transponder or SVAC upstream. If there are, clear
those alarms/conditions first before continuing.
...................................................................................................................................................................................................
3
Retrieve the configured topology upstream from this port to the service's ingress point to
the NE. Ensure that the physical fiber topology matches.
...................................................................................................................................................................................................
4
Verify that the loss in the fiber that is feeding the port is not higher than expected by
comparing the bulk powers ending and leaving the fiber. If the loss is higher than
expected, clean the fiber ends, and if this does not solve the problem, replace the fiber. If
this still does not solve the condition on the amplifier, the problem may be with the card
itself.
...................................................................................................................................................................................................
5
Perform a warm reset of the card on the alarmed card.
CLI config card card type shelf slot reset warm
WEBUI Select the card, click the Reboot tab, select Warm Reboot >Submit.
...................................................................................................................................................................................................
6
Perform a cold reset of the card.
Note: Refer to Caution at the beginning of this procedure.
CLI config card card_type shelf slot reset cold
WEBUI Select the card, click the Reboot tab, select Cold Reboot >Submit.
...................................................................................................................................................................................................
7
Reseat the card. Refer to “Reseating a Card” (p. 3-19).
Trouble-clearing procedures
USLOS
USLOS (Upstream Channel Absent)
....................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................
2-344
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
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