Originally Posted by tsac
ATT sells a unit that connects to the DSL service and acts as a mini Cell tower in your house. It uses your account but gives better service.
Nothing via phone to WIFI will work except Skype or something like that.
The ATT device is called a Microcell. It connects to your Internet service (Cable/DSL/whatever) and routes the calls visa the Internet to a tower or other access pint. There is a plan that uses your minutes and one that has unlimited minutes. But the catch is, ATT is going to charge you for the data - against your regular data plan.