It may hard to understand because it doesn't make any sense:
My iPhone is not set to be forwarded at all.
GV voicemail is not turned on on the iPhone
GV is forwarded only to Google chat.
Forwarding to the iPhone number is unchecked.
Calls to the iPhone (AT&T) number ring four times on the phone, then transfer to GV and the phone on the Obi starts ringing. I've tried resetting the iPhone network settings, restarting the phone, changing the GV forwarding number, whatever, but the iPhone still rings 4 times, skips VM, and transfers to the Obi.
I know this is not an iPhone forum or a GV forum, but this never happened before I set up the Obi.