Telecommunication
Telecommunication (from two words, tele meaning 'from far distances' and communication meaning to share information) is the assisted transmission of signals over a distance for the purpose of communication. In earlier times, this may have involved the use of smoke signals, drums, semaphore, flags, or a mirror to flash sunlight. Starting with the telegraph, telecommunication typically involves the use of electronic transmitters such as the telephone, television, radio, optical fiber and computer.
Telecommunication Media
Earth station at the satellite communication facility Raisting Earth Station in Raisting, Bavaria, Germany
A replica of one of Chappe's semaphore towers
Optical fibre provides cheaper bandwidth for long-distance communication.
Digital television standards and their adoption worldwide
