RonR,
I manage everything via the online Portal. Yes, provisioning is enabled.
In Device Configuration I select the Obi110 gear, then check:
Google Voice Voicemail Notification [Enable Google Voice voicemail notification on your phone. (Optional)]
I enabled it, the phone reported there was a message even if none were there. It's still reporting it now after I disabled / enabled / disabled this setting - and each time the device reboots as it receives the new configuration settings.