Shale, thanks for your response.
I read this thread and checked on my google chat drop down. I see "Try the new Hangouts", so I am still on the old chat.
I normally can dial out and receiving incoming calls when I tested GV w/ OBI200, but not sure whether I am actually missing calls as the email notifications seem to indicate.
Would any GV filtering on contacts settings induce this missed calls behavior that I am experiencing.