This read-write Integer32 (1-4095), measured in units of 10 milliseconds, specifies the maximum silence-gap duration VISM's sequential tone detector will still accept between tone segments, per its own description of maximum tone duration allowed. An admin sets this to bound how long a pause between tones in the sequence can be before the detector considers the sequence broken. For example, an admin whose sequential tone detection is failing because of a longer-than-typical pause between segments would raise seqToneMaximumGapDuration to accommodate it.