The document describes a fireman intercom system used for communication between firemen and the fire chief command center during a rescue. The system includes handsets, remote telephone terminal units, cables for power and transmission, a control panel, and sub control panels with displays and keyboards to help direct rescue efforts and communicate with those in the building.

1. FIREMAN INTERCOM SYSTEM
1. Fireman use for communication with fire chief command center room
2. Fireman use for rescue the life in the building
3. Person in the building use for helping

2. FIREMAN INTERCOM COMPONENTS
HANDSET
RTTU: REMOTE TELEPHONE TERMINAL UNIT
CABLE FOR POWER SUPPLY, SPEECH LINE AND
TRANSMISSION DATA
FIREMAN INTERCOM CONROL PANEL
FIREMAN INTERCOM HANDSET
FLOOR INDICATOR
SUB FICP

3. DISPLAY PANEL
KEY BOARD
DISPLAY PANEL