Steve thanks for your efforts. I apologize for my ambiguity. I originally had the obi set up with google voice, until I got notice that obi and google were not going to support each other. I moved back time warner for a year.
After receiving another notice that obi and google had kissed and made up, I set the obi up again with google voice, going thru the same steps as you've outlined in your reply. All's well with the obi. It's worked perfectly for about 6 months. The dedicated email is great. Google voice sends notification of a missed call to my dedicated google email, just like it's supposed to do. I have a gmail app for my iphone that's dedicated to the home telephone and nothing else. I set that email app up to push notifications to my iphone. Now, whenever I'm not home and miss a call, I get an instant notification on my iphone....couldn't be better. Until it stopped sending me notifications.
So apparently the Obi is no longer sending a notification of a missed call to google voice. Or google voice is no longer sending me the notification after it receives it from Obi...which one I don't know.
But as referenced in my original post, the settings haven't been changed on google voice. I've enclosed a screen shot(I hope).