About 2 weeks ago after 1 or 2 years of no problems I don't receive any incoming calls anymore, it just goes straight to voicemail??? Any suggestions?
My wife was complaining of the same thing until she found one of our phones slightly off the hook. ;)
My father had a similar problem that took power cycling the obi box to clear it.
Have you tried a different telephone plugged into the obi and test call from a cell phone?
Does everything look good on the obi website dashboard?
Which Service Provider are you using?
Can you make outgoing calls over that Service Provider?