3G mobile communications system
air force communications system
all purpose communications system
architecture of green wireless communications system
Atmospheric laser communications system
B3G mobile communications system
BCS Business Communications System
beyond 3G mobile communications system
broadcast communications system
cellular mobile communications system
communications system of emergency disaster relief
computer communications system
defense communications system
digit mobile communications system
Dispatching Communications System
dispersion limit lightwave communications system
distributed mobile communications system
distributed radio mobile communications system