Bought this to work with a google voice number, I love it

The ObiBT bluetooth dongle is not necessary to link to a Project Fi cell number, just set it up exactly as you would set up a Google Voice number.

I have it hooked up using my Google Voice number.

It is great to be at home at my desk and use a desk phone instead of my cell phone to make/receive calls on my Google Voice number

I enabled the ObiExtra trial and my wife can even send texts to my Google Voice number and it forwards to my cell number

I use this phone for my Google Voice number that I utilize for work giving it out to clients I work with

It links to my Google Voice number and my Project Fi cellphone's number - even if the cell phone is elsewhere

Replace the number in parens with your 1-prefixed Google Voice number, and replace sp1 with sp2 through sp6 if your Google Voice is configured on a secondary Service Provider slot (see attached image)

Purchased this for my Google Voice number, recently working from home, and I am absolutely thrilled with it