[Edwood]

I have the same problem with my Jabra BT8010 headset. The problem is not that it's not ringing, it's sending all sounds, including ringtones to your Bluetooth headset. I find that turning off and then turning on my headset fixes the problem. Well, at least until it happens again. It's really annoying, so I end up leaving my headset off a lot. Or at least obsessively checking to see if my headset is connected like that.

It might have something to do with Voice Command, but no matter the options I disable it still happens.