A Low-Cost Communications Tool

Internet systems let charities make overseas calls, hold videoconferences, and perform other tasks at little cost

Two years ago, David Wilcox, director of international ministries at the Association of Christian Schools International, in Colorado Springs, struggled with the high cost of making telephone calls to the United States while traveling overseas. Then he started using Skype, an Internet-based communications system that enables him to route his calls through his laptop computer, and he immediately saw huge savings.

A typical cellphone bill for one of his trips to Asia used to total more

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