- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
A method of verifying that any redundant hardware or software in a communication system is in an operational condition. 2. A check that uses one or more extra binary digits or characters attached to data for the detection of errors.
Industry:Telecommunications
A method which is simplex operation at one end of the circuit and duplex operation at the other. RR Footnote: In general, duplex operation and semiduplex operation require two frequencies in radiocommunication; simplex operation may use either one or two. 2. Operation of a communications network in which a base station operates in a duplex mode with a group of remote stations operating in a half-duplex mode. Note: The terms "half-duplex" and "simplex" are used differently in wire and radio communications.
Industry:Telecommunications
A mirror used to reflect light selectively according to its wavelength.
Industry:Telecommunications
A misnomer. Note: Space-division multiplexing has been improperly applied to the use of multiple physical transmission channels, e.g., twisted pairs or optical fibers, under one sheath.
Industry:Telecommunications
A mobile communications system that uses a combination of radio transmission and conventional telephone switching to permit telephone communication to and from mobile users within a specified area. Note: In cellular mobile systems, large geographical areas are segmented into many smaller areas, i.e., cells, each of which has its own radio transmitters and receivers and a single controller interconnected with the public switched telephone network. Synonyms cellular phone, cellular radio, cellular telephone.
Industry:Telecommunications
A mobile Earth station in the aeronautical mobile-satellite service located on board an aircraft.
Industry:Telecommunications
A mobile Earth station in the maritime mobile-satellite service located on board ship.
Industry:Telecommunications
A mobile service between aeronautical stations and aircraft stations, or between aircraft stations, in which survival craft stations may participate; emergency position-indicating radiobeacon stations may also participate in this service on designated distress and emergency frequencies.
Industry:Telecommunications
A mobile service between base stations and land mobile stations, or between land mobile stations.
Industry:Telecommunications
A mobile service between coast stations and ship stations, or between ship stations, or between associated on-board communication stations; survival craft stations and emergency position-indicating radiobeacon stations may also participate in this service.
Industry:Telecommunications
