Early inventors in the 1800’s such as Elisha Gray, Alexander Bell, Nikola Tesla and Thomas Edison all recognized early on that copper wire was an excellent conductive material for the transmission of telegraph, telephone and facsimile signals.
Despite predictions of its demise, copper wire remains an important conduit for both short-range communications. Fiber optic cable and satellite communications have taken leading roles in recent years as the preferred mediums for long-distance telecom.
Although wire usage has been affected, it is far from obsolete. On the contrary, copper is an integral part of exciting new transmission processes, HDSL and ADSL (High Digital Subscriber Line and Asymmetrical Digital Subscriber Lines) that can extend the message-carrying capacity of existing twisted copper wire pairs to that of optical fiber without the expense of switching systems.