8x8 Packet8 Broadband Phone Adapter VoIP - VOIP, or Voice Over IP, is a new technology that lets you make phone calls over the Internet for a flat monthly fee! All you need is a broadband Internet connection, either DSL or Cable, a router and this adapter. After you sign up for the monthly service you plug this adapter into a free Ethernet port on your router, then plug in your regular phone to the adapter. You"ll get a new phone number and your phone will work the same as always - but calls will travel through your modem instead!