Intercommunication system consisting of a base station, headsets and headphones, antenna, wireless beltpack, and wired beltpack, for providing wired and wireless, hands-free, closed loop, party-line communication among fixed work groups of people

'among':31 'antenna':11 'base':6 'beltpack':13,16 'close':25 'communic':30 'consist':3 'fix':32 'free':24 'group':34 'hand':23 'hands-fre':22 'headphon':10 'headset':8 'intercommun':1 'line':29 'loop':26 'parti':28 'party-lin':27 'peopl':36 'provid':18 'station':7 'system':2 'wire':15,19 'wireless':12,21 'work':33

CREWCOM

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