Note 32

As T1 phone line service became cheaper and more widely available, high speed terrestrial networks could be built that did not have the 250msec. satellite channel latency.  Winston Edmond adapted the BSAT software to work over a shared cross-country bus made up of parallel T1 circuits.  This network became known as the Terrestrial Wideband Network (TWBNET) and the BSATs became Wideband Packet Switches (WPSs).  The TWBNET supported a real-time stream service along with a bursty datagram service.  In the early 1990s, BBN extended this network globally, from Germany to South Korea, as the Defense Simulation Internet, which supported real-time SIMNET and other war gaming exercises.