System overview 
EST3 Installation and Service Manual  1.15 
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80th floor, west wing evacuation message: 
A fire has been reported on the west wing 
of the 80th floor.
30th floor, north wing evacuation message: 
A fire has been reported on the north wing 
of the 30th floor.
Generic (default) message:
An emergency has been reported in the 
building. Remain where you are and await 
further instructions.
Location specific messages
Generic (default) evacuation message
The generic (default) evacuation 
message plays when multiple location-
specific messages have been requested 
by the system, or when no location-
specific message has been specified.
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Figure 1-9: Automatic Message Processing 
Firefighter phone 
The 3-FTCU contains a master telephone handset that provides 
an analog telephone riser for totally independent 2-way 
communications between the fire command station and 
Firefighter telephone stations / jack telephones installed at 
strategic locations throughout the protected facility. 
Taking a telephone off-hook or plugging into a telephone jack 
generates a visual and audible incoming call signal at the fire 
command station. The individual originating the call hears a tone 
until the handset is connected to the system. The fire command 
station operator manually connects the incoming phone call to 
the phone riser to complete the call. Up to five remote telephones 
may be connected to the riser simultaneously. The fire command 
center operator can also use the telephone circuit as a page 
source, permitting paging via the telephone system.