I kept finding messages on my voicemail when I was at home, and discovered that people have been calling me but I don’t hear any ring; the call just goes straight through to voicemail. This doesn’t happen every time, it seems to happen to random calls regardless of whether they are local or long distance.
First make sure your Do Not Distub is off.
2nd see if you can dial out periodically. Your Ooma maybe losing internet connection on and off.
And make sure the ringer on your phone is enabled. Log shows inbound calls are answered ok now.