I setup a Obihai 202 using Google Voice and went thru the steps suggested on FAQ for the issue where I hear one ring followed by a busy tone when I am trying to make an outgoing call. I am unable to receive incoming calls as well.
http://www.obihai.com/faq/GV-and-the-OBi/trs-busy-hangoutsI was able to complete all the steps but I do not get the Google Chat option and therefore cannot set that check box as suggested. I realize this is a google issue ... so if anyone has a workaround for this it'll be of immense help!

thanks