The Business: (Telecommunications Business )

The Telecommunications sector section comprises industries and establishments primarily engaged in operating, maintaining or providing access to facilities for the transmission of voice, data, text, and video between network termination points and telecommunications reselling. Transmission facilities may be based on a single technology or a combination of technologies. This section also contains industry information, support services, as well as sites for equipment suppliers and manufacturers. Sites generally not listed in this section include: Scientific, technical, and research oriented sites are listed under Science: Technology: Electrical Engineering: Communications. Telecommunications Business.

Early means of communicating over a distance included visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs. (wikipedia)