The primary regulator of communications in the United States is the Federal Communications Commission. It closely regulates all of the industries mentioned below with the exception of the Internet service provider industry. ...more on Wikipedia about "Communications in the United States"
In the United States, for most of the history of broadcasting, there were only four major national broadcasting networks. From 1946-1956 these were ABC, CBS, NBC, and the DuMont Television Network. After that and until 1969, the national networks were ABC, CBS, NBC, and NET. After 1969 and until 1986, the four main national networks were ABC, CBS, NBC, and PBS. ...more on Wikipedia about "List of United States over-the-air television networks"
The Mobile Telephone Service (MTS) is a pre- cellular VHF radio system that links to the PSTN. MTS was the radiotelephone equivalent of land dial phone service. As of 2005, only rural and wilderness areas are still using the system. ...more on Wikipedia about "Mobile Telephone Service"
The National Information Systems Security Glossary, published by the National Security Telecommunications and Information Systems Security Committee of the United States federal government, is an unclassified glossary of Information Systems Security ( INFOSEC) terms intended to provide a common vocabulary for discussing INFOSEC. ...more on Wikipedia about "National Information Systems Security Glossary"
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