Arabsat - Arab Satellite Communications Organization (Riyadh, Saudi
Arabia).
Autodin - Automatic Digital Network (US Department of Defense).
CB - citizen's band mobile radio communications.
Cellular telephone system - the telephones in this system are radio transceivers, with each instrument having its own private radio frequency and sufficient radiated power to reach the booster station in its area (cell), from which the telephone signal is fed to a telephone exchange.
Central American Microwave System - a trunk microwave radio relay system that links the countries of Central America and Mexico with each other.
Coaxial cable - a multichannel communication cable consisting of a central conducting wire, surrounded by and insulated from a cylindrical conducting shell; a large number of telephone channels can be made available within the insulated space by the use of a large number of carrier frequencies.
Comsat - Communications Satellite Corporation (US).
DSN - Defense Switched Network (formerly Automatic Voice Network or
Autovon); basic general-purpose, switched voice network of the Defense
Communications System (US Department of Defense).
Eutelsat - European Telecommunications Satellite Organization (Paris).
Fiber-optic cable - a multichannel communications cable using a thread of optical glass fibers as a transmission medium in which the signal (voice, video, etc.) is in the form of a coded pulse of light.