seismic communications system

seismic intelligence

seismic sensor

seismic target-sensor

seismic station

area communications system

command communications system

communications and intelligence system

communications system

division communications system

NATO Integrated Communications System

satellite-based communications system (SATCOM)

tactical communications system

buried and hardened cable communications system

bell-ringer communications system

air traffic control communications system

fleet satellite communications system

data communications management system

satellite communications system (SATCOM)

aerial communications system

wideband communications system

echelon-to-echelon communications system

flash-type communications system

single-axis communications system

axis of signal communications type system

grid communications system

Target, Trigger, Location, Observer, Delivery system, Attack guidance, and Communications (TTLODAC)

grid system of communications

high command communications system

fire extinguishing system sprinkler system and fire alarm system

air-to-ground communications equipment

Allied Tactical Communications Agency (ATCA)

analog communications