I have an Epson WF-3620 all-in-one. I purchased my OBi200 and my phone so that I could fax to and from it. I have gone through and it says I have configured my GoogleVoice, and that it is connected. How do I get a number associated with the phoneline (I do not have a land line... is why I got the Obi200) and then how do I set Googlevoice up so I can fax? I tried just faxing something the other day and it tells me there is no phone connected. The phone is connected per instructions on the OBi200 info... (1) Phone plug in phone jack, (2) Network cable to router, and power cable... The printer has a listing for a network printer... Please help...
I hope this page will help you get a GV number: How to Get a Google Voice Number (https://support.google.com/voice/answer/150640?hl=en)
How to Set Up OBi with Google Voice (http://www.obihai.com/tutorial1)
I suspect that you don't have a GV number but if you really do, it will be visible when you log in to your account at google.com/voice.