sonusDigitProfileDetMinOnDuration 1.3.6.1.4.1.2879.2.2.2.1.7.2.1.8

Specifies minimum tone duration in milliseconds required for digit detection. The value must in increments of 5ms. For DTMF digits, the value must be between 25ms and 80ms. For MF digits, the value must be between 25ms and 100ms.