Steve,
Thanks so much for your advice on this - I was not aware of the way Hangouts worked independently.
What I am looking for is a way to log into
ObiTalk.com and find the setting that will essentially "turn the Obi110 off" so that incoming calls to my Google Voice number will not ring the Obi110 and that call will instead ring through to Gmail chat window where I am logged into it in Explorer browser. Hopefully, it's just a toggle setting somewhere that I haven't found yet and would be easy enough to log back in to ObiTalk and reverse.
Your solution you posted might work for a different scenario but what I am looking for, specifically for my case, is disabling that telephone back at home from ringing or otherwise indicating a call is coming in, and for me to be able to hear and accept the call in Gmail Chat in Internet Explorer, without switching to Hangouts or otherwise enabling Hangouts.
Thanks so much for any advice anyone has on this setting I am seeking.