You can use the Historical tab in Alarm Central to view the status history of cable modems (CM Status) associated with an alarm, fiber node, or topology hierarchy tree.
Drag and drop the parameter CM Status from the Historical>Parameters>CM tab into the graph area. The cable modem status history is displayed for all the cable modems contained in your selection.
Cable modem status values shown map to the regStatus MIB values described in Mapping of MIB regStatus value to modem status.
