Receiving free inbound Land Line calls to Gizmo via GrandCentral. If you are not aware of this option, one can open a free account with www.grandcentral.com then go to Setting after you have log in. There you will find "Add/Edit Number" link select it, you should now see the Gizmo icon on that page if not click on one of the drop down arrows. All you have left to do is put in your Gizmo phone number (you find that in Gizmo it should start with area code 747).