The basic voice system includes up to eighty different messages, with a total message time of eight minutes. The system can be used in conjunction with independent position indicators, as well as on the MICRO COMM 3-wire network with no additional wires. Passing chimes give an audible response when a floor is passed in either direction with several options, such as: Arrival Gong, Nudging Buzzer, or Fire Alarm. All units are designed to meet ADA requirements.