John Mayo forged closer ties between research and development and the company's business units and globalized Bell Labs. Advances in fiber optics led to multigigabit systems that circle the globe. Other advances came in software, microelectronics, wireless communications, personal video, and real-time language translation. Bell Labs developed high definition television and interactive television systems. Mayo, who also won the second National Medal of Technology for Bell Labs, saw four more researchers win National Medals of Technology.