Free Calling with Your Home Phone Use your existing home phone and your broadband router to make and receive calls over the Internet for free (or at a very low-cost). Why You Will Love the OBi Save MoneyUse the free OBiTALK and low-cost VoIP services to lower your phone bills. The OBi is Not Locked to a Particular ServiceAdd VoIP services of your choosing, to make & receive phone calls to and from regular phone numbers.