73385447
Sep 14, 1982
Nov 8, 1983
TELECOMMUNICATIONS SWITCHES, COMPRISING HARDWARE COMPONENTS CONSISTING OF (( MAIN DISTRIBUTOR FRAMES, )) PBX CONSOLES, VIDEO DISPLAY UNITS, PRINTERS AND MAINTENANCE TERMINALS, AND COMPUTER PROGRAMS, PROVIDING GUEST HOTEL STATUS INFORMATION, LEAST COST PHONE ROUTING, AND INTEGRATED PHONE CALL ACCOUNTING
Electrical and Scientific Apparatus