INSTALLATION, INSPECTION, MAINTENANCE AND TROUBLE CALL SERVICE FOR ELECTRICAL COMMUNICATION SYSTEMS AND EQUIPMENT-NAMELY, AMPLIFIED SOUND SYSTEMS AND EQUIPMENT, SPEAKER INTERCOM SYSTEMS AND EQUIPMENT, TELEPHONE INTERCOM SYSTEMS AND EQUIPMENT, NURSES' CALL SYSTEMS AND EQUIPMENT, MESSAGE PROGRAMMING SYSTEMS AND EQUIPMENT, BACKGROUND MUSIC SYSTEMS AND EQUIPMENT, PAGING SYSTEMS AND EQUIPMENT, AND PUBLIC ADDRESS SYSTEMS AND EQUIPMENT

'address':52 'amplifi':16 'background':41 'call':6,32 'communic':10 'electr':9 'equip':14,20,25,30,35,40,45,49,55 'equipment-nam':13 'inspect':2 'instal':1 'intercom':22,27 'mainten':3 'messag':36 'music':42 'name':15 'nurs':31 'page':46 'program':37 'public':51 'servic':7 'sound':17 'speaker':21 'system':11,18,23,28,33,38,43,47,53 'telephon':26 'troubl':5

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