This Gauge32, in milliseconds, records the lowest value reached by the Voice Playout FIFO delay during the call. Paired with the high water mark, it lets an administrator gauge the full swing of jitter-buffer delay experienced during a call, helping distinguish a stable low-jitter path from one with wide delay variation. For example, a large gap between this low water mark and the corresponding high water mark on the same call points to unstable, bursty network jitter rather than a consistently high but stable delay.