Call Agent is a new innovative service that allows a customer to Make and Receive phone calls from anywhere in the world. All calling cards are by the leading manufacturers. Calling cards that we sell are good for calls from USA, and some phone cards can be used from Canada as well. Some phone cards expire if not used by a certain period of time while other phone cards have no expiration date. No cell phone or regular phone service provider can offer such a deal to its customers. This prevents you from over spending and allows you to budget your spending. I have bookmarked the website for future reference, remembering where to go buy cards before I plan my vacation overseas. The website offers great savings and true value.Commonly used by students and travelers, Prepaid International Phone Card offer a convenient way to make calls while away from home.I have bookmarked the website for future reference, remembering where to go buy cards before I plan my vacation overseas. The website offers great savings and true value.If you are traveling outside of the United States, it is imperative that you purchase a calling card which enables you to call home from another country.