Applicable only to a Micro Base Station that was upgraded from SW version 2.0 or lower and does not have any Maximum Number of SUs License. The Grace Period will be activated automatically upon the first time that the Micro Base Station starts to serve more than 20 SUs. Indicates the Grace Period End Date. Until the End Date the Micro Base Station can serve up to 250 SUs. If it is empty it means Not Applicable.