The SL Undersea Lightwave Transmission System

A new alternative in transoceanic communication is now in production at AT&T which will provide several key advantages for the military cammunicator over existing ways of communicating across the Atlantic and Pacific Oceans. The SL Undersea Lightwave Cable System, which will be a major part of the TAT-8 and TPC-3 cable systems, will offer the military user several advantages over satellite transoceanic communications. ¿No delay or echo effects on both voice and data channels. ¿Lower system cost, longer system lifetime. ¿Immunity from atmospheric disturbances, multipath fading, etc. ¿Jam proof. ¿Extremely difficult to tap without system failure.