All-in-one voice alarm and evacuation system, with the simplicity of independent equipment and the benefits of a network topology to link and expand the system. Each C500 manages 6 audio streams that can be output simultaneously on the 6 speaker lines connected to the 100 W RMS power units. For global announcements, the C500s are linked in a network, by means of a redundant loop, with 2 audio channels and a serial data channel (RS485).