AN/TTC-39 Switch Simulator User's Guide.
Horst E. Ulfers · Defense Technical Information Center (DTIC) · 1980
The AN/TTC-39 Switch Simulator was developed for DCA by GTE-Sylvania under contract DCA100-76-C-0068. The software was written in FORTRAN-IV for use on IBM System-360 or System-370. This manual describes the operation of the AN/TTC-39 Switch Simulation System as implemented on the DCEC Hybrid Simulation Center in Reston, VA.