This useful mode can be set on a schedule within the “Do Not Disturb” settings page of most Android phones, which will switch it on during work hours or at night when you’re sleeping.

For review, Snom sent the CRN Test Center the entry-level Snom One Plus, which comes with PBX software preinstalled and when combined with Snom VoIP phones ... such as "DND" (do not disturb ...