I once read a tutorial on how to setup a SIP account with a phone number on the Obi100 so that Google Voice calls could be forwarded to it, and I could still make outgoing calls on the Obi100, but I can't find it anymore. Has anyone tried the idea and gotten it to work? If so, can you direct me to where I can find the instructions? I'm trying to avoid having to pay for phone service after May 15th. I have a SIP account and plan to use a free phone number from IPKall. Thanks!