Firefighters’ Telephone The specific firefighter system serves the firefighters who arrive at the site / residence / business in the event of a fire. The telephone system installed on the floors is used by the firefighter arriving at the floor, and to communicate with the incident manager located at the main entrance to the site in front of the detection system / main firefighter panel. The firefighter system is part of a complex of safety systems – fire detection and extinguishing – public address – firefighters. The system meets the requirements of the fire services and the Israeli Standards Institute The system is integrated into the standard. UL 864