This is the combined count of all currently active alarms regardless of severity, effectively the sum of tsiNbMinorAlarm and tsiNbMajorAlarm, giving a single top-level number for overall system alarm load. It is a simple is-anything-wrong-at-all figure that a dashboard can display prominently before an operator drills into the severity breakdown, useful for a quick glance across many sites in a large fleet. A fleet-wide monitoring view sorting sites by this single total-alarm figure lets an admin quickly spot which sites need attention without separately checking minor and major counts for every site.