Does ONT report MFAS errors at OTL4 layer as a red alarm condition?
Knowledge Base - FAQ
Does ONT report MFAS errors at OTL4 layer as a red alarm condition?
If the MFAS errors are currently being received, then the status will show a red alarm for the layer.
If the MFAS errors are historical, then the status will show a yellow history with overall layer alarm status green.