China calling cards and phone cards to China from USA.

  China telephone system - domestic and international services are increasingly available for private use; unevenly distributed domestic system serves principal cities, industrial centers, and many towns; China continues to develop its telecommunications infrastructure; China in the summer of 2008 began a major restructuring of its telecommunications industry, resulting in the consolidation of its six telecom service operators to three, China Telecom, China Mobile and China Unicom, each providing both fixed-line and mobile services; domestic: interprovincial fiber-optic trunk lines and cellular telephone systems have been installed; mobile-cellular subscribership is increasing rapidly; the number of Internet users exceeded 564 million by the end of 2012; a domestic satellite system with several earth stations is in place; international: country code - 86; a number of submarine cables provide connectivity to Asia, the Middle East, Europe, and the US; satellite earth stations - 7 (5 Intelsat - 4 Pacific Ocean and 1 Indian Ocean; 1 Intersputnik - Indian Ocean region; and 1 Inmarsat - Pacific and Indian Ocean regions) (2012).
  United States telephone system - domestic: a large system of fiber-optic cable, microwave radio relay, coaxial cable, and domestic satellites carries every form of telephone traffic; a rapidly growing cellular system carries mobile telephone traffic throughout the country; international: country code - 1; multiple ocean cable systems provide international connectivity; satellite earth stations - 61 Intelsat (45 Atlantic Ocean and 16 Pacific Ocean), 5 Intersputnik (Atlantic Ocean region), and 4 Inmarsat (Pacific and Atlantic Ocean regions) (2011).