That looks like maybe it could work, but it seems complicated and I don't see much evidence online of people using it.
Did you have any luck using it before?
Discussion
I use it as my primary phone line, but yes, its not as straight forward I guess. You would use an xmpp client to read the text messages. It comes with an app Cheogram which I use for phone calls and SMS. With xmpp, I can also take or make phone calls from a laptop or tablet too. But yes, it is complicated in some ways.