Sunday, December 30, 2012 Using Google Voice as a landline --> Have you ever wanted to stop paying for a landline but didn't know how? In this article I'll review the steps I used to configure a VoIP land line using a SIP interface through a Raspberry Pi based PBX with Freeswitch and Google Voice. In other words, make free calls! NOTE: You will not have 911/Emergency services with this solution