Read the fine print of the calling card, they often charge for units, not minutes. A unit can be any measure of time they decide, plus they often have minimum call amounts and round up to the next unit. The bottom line is, they have done the math, and it’s going to cost most people more money than selecting a good long distance plan.
AT&T Corp. provides voice, data and video communications services to large and small businesses, consumers and government entities. AT&T and its subsidiaries furnish domestic and international long distance, regional, and local communications services, cable (broadband) television and Internet communications services.




