AT&T introduces unlimited calling to your A-list; program launches September 20th

AT&T customers using individual Nation plans of $59.99 per month or higher can select 10 domestic numbers, including landlines or numbers on a different cellular carrier, and calls to those numbers will not count against the minutes in the customer's plan. FamilyTalk customers on plans costing $89.99 or higher can select 10 numbers that they can call on an unlimited basis. Information on entering phone numbers and making changes to your list can be found at the sourcelink.
source: AT&T