A pre-paid phone card allows you to purchase calling minutes in advance to use whenever you want to make a telephone call. Minute/unit based and dollar based phone cards are available in various denominations. The face value of a card is typically stated in minutes, units, or dollars.
Pre-Paid Phone Cards: What Consumers Should Know Fact Sheet
Help Our Troops Call Home - The Department of Defense Military Exchanges have been authorized to sell prepaid calling cards to individuals and organizations who wish to purchase these cards for our troops serving overseas in Operation Enduring Freedom and Operation Iraqi Freedom.