We have had three events where our OPT-Pre card goes into Alarm and the msg APC correction skipped comes up after either a power shutdown of an adjacent node or if the fiber span is worked on in either case the light becomes completly absent .
Basic correction is to do a force APC correction under the maintenace tab.
TAC advised that the MSG is just to advise that change in 3db has occurred when the Line or adjecent node comes back up. I would like to know if there is a more permenant solution ? since the amp detects changes in levels and automatical adjusts could there be a newer revision of firm ware that we should move to ?