Let me choose to be unavailable thus sending all calls to voicemail. I know I can set the time to 0 seconds before an unanswered call is sent to voicemail. But if I am using Sonic Mobile App, it still tries to ring my phone first.
So if I want to send all calls to voicemail but use Sonic Mobile app to make calls, your system does not allow it. So I have chosen to not allow Accession, thus not able to use the Sonic Mobile App, so I never use the phone line to make calls.
My ultimate preference would be to remove this service completely. If you are going to force us to use a VOIP phone service, please make it a good service. It is the main reason I do not recommend Sonic to my neighbors. Too bad because your internet service is solid!