This read-only integer reports the average receive signal level, in dBm, measured by the link interface so far during the current, in-progress 15-minute interval. An engineer watches this as a smoothed, near-real-time signal reading that updates faster than the cumulative wvlinkAverageRSL figure. For example, a current-interval average noticeably lower than the terminal's long-run cumulative average would indicate a fade event is actively depressing signal levels right now.