Long line (telecommunications)

In telecommunications, a long line is a transmission line in a long-distance communications network such as carrier systems, microwave radio relay links, geosynchronous satellite links, underground cables, aerial cables and open wire, and submarine communications cables. == Microwave networks == In the United States, the term gain visibility through the establishment of AT&T Long Lines division of the Bell System in 1947 when a radio relay between New York and Boston that was made up of seven radio relay stations was inaugurated.

Source: Wikipedia — Long line (telecommunications) (CC BY-SA 4.0)