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INTERCOMMUNICATION SYSTEMS, namely, EMERGENCY, INFORMATION, AREA OF RESCUE AND ELEVATOR TELEPHONES, AND MASTER AND SUBSTATION INTERCOMS; FREE STANDING TOWER FOR MOUNTING AN EMERGENCY TELEPHONE TO BE INCORPORATED THEREIN; EMERGENCY BROADCAST SYSTEM, namely, A TELEPHONE FOR REPORTING TO A CENTRAL STATION AND AN AUDIO SPEAKER FOR BROADCASTING A TONE, MESSAGE OR ANNOUNCEMENT FROM THE CENTRAL STATION; SOFTWARE FOR VERIFYING THE INTEGRITY AND RECORDING THE USE OF EMERGENCY AND INFORMATION PHONES; and SOFTWARE FOR OPERATING AN EMERGENCY MASS NOTIFICATION SYSTEM