How do I change the duration of my ringer

Access and log in to dialpad.com
Expand the section for Voicemail and Missed Calls, and then click “Show Advanced Options”.
In the “Ring Duration” section, click on the blue dot and drag it to the left to shorten the ring-time. We recommend between 15 and 20 seconds. Beyond that, callers tend to hang up instead of waiting for your greeting.