Telecommunication is the extension of communication over a distance. In practice it also recognizes that something may be lost in the process; hence the term ‘telecommunication’ covers all forms of distance and/or conversion of the original communications, including radio, telegraphy, television, telephony, data communication and computer networking.
The elements of a telecommunication [...]

Optical fiber provides cheaper bandwidth for long distance communication
Bell Labs scientist Claude E. Shannon published A Mathematical Theory of Communication in 1948. This landmark publication was to set the mathematical models used to describe communication systems called information theory. Information theory enables us to evaluate the capacity of a communication channel [...]

Copy of Alexander Graham Bell’s original telephone, at the Musée des Arts et Métiers in Paris
Telecommunication is the technique of transmitting a message, from one point or place to another with the typical additional attribute of being bi-directional. In practice it also recognizes that something may be lost in the [...]