Thresholds are baselines established to monitor data collection. If collected data goes beyond the Threshold value, it indicates that the collected value is not a recommended value.
Threshold.conf file stores the definition of Threshold objects, with a minimum or maximum value to be compared with the collected network data.
To Import Threshold.conf file , please refer to the section Working with Files
For detailed explanation on defining thresholds refer to Defining Threshold in WebNMS Developer Guide.