United States Communications:
Telephones — main lines in use: 181,599,900 (2003 est.)
Telephones — mobile cellular: 158.72 million (2003 est.)
Telephone system: general assessment:
a large, technologically advanced, multipurpose communications 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; 24 ocean cable systems in use; 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) (2000)
Radio broadcast stations: AM 4854 , FM 8950 , shortwave 18 (2004 est.)
Television broadcast stations: more than 1500 (including nearly 1,000 stations affiliated with the five major networks - NBC, ABC, CBS, FOX, and PBS; in addition, there are about 9,000 cable TV systems) (1997 est.)
Internet country code:
.us
Internet hosts: 115,311,958 (2002 est.)
Internet users: 159 million (2002 est.)
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