transceivers, each instrument having its own private radio frequency with sufficient radiated power to reach the booster station in its area (cell), from which the telephone signal is fed to a regular 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
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
HF—high-frequency; any radio frequency in the 3,000- to 30,000-kHz range
Inmarsat-International Mobile Satellite Organization (London); provider of global mobile satellite communications for commercial and distress and safety applications, at sea, in the air, and on land
Intelsat—International Telecommunications Satellite Organization
(Washington, DC)
Intersputnik—International Organization of Space Communications
(Moscow); first established in the former Soviet Union and the East
European countries, it is now marketing its services worldwide with
earth stations in North America, Africa, and East Asia