I picked up my phone yesterday and had a dial tone but calls didn't go through. I checked my OBI and all 3 led's were lit green and my Internet connection was not down. I recycled my system and the service (PhonePower) was working again. The problem may have been ongoing for a day or two, as I don't use my phone every day.
I am just wondering if there is a way to know there is a problem when all systems look like go. What if you needed 911 and didn't know you were down? I didn't try my GV number to see if it would make an outgoing call, but if it was my network that was the issue it's unlikely. I called PP and they had no issues at the time I had my issue.