what is a voice communication system
EVC System Q What is a Disabled Refuge system? A An EVCS (Emergency Voice Communication System) is a fixed, monitored and maintained, bidirectional, full duplex voice communication system to assist the orderly evacuation of disabled or mobility impaired people and enhance fire fighters communication during emergencies. What is a Disabled Refuge system? A An EVCS (Emergency Voice Communication System) is a fixed, monitored and maintained, bidirectional, full duplex voice communication system to assist the orderly evacuation of disabled or mobility impaired people and enhance fire fighters communication during emergencies.