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POPSNew peer-to-peer mobile system holds potential for free calls TerraNet founder Anders Carlius said that the idea came when he was on safari in Tanzania in 2002, and found that he could not ring friends riding in another jeep only a few meters away. "I started thinking, 'Couldn't we get phone-to-phone without needing any other equipment, and actually have real voice communication, like a telephone call, between units?'" He admits there are problems with having enough available frequencies.