There are two types of systems the IBC may require. One is a "smoke and heat" vent, and the other is basically a smoke evac (i can't remember exactly what the IBC calls this one.) The smoke evac is easier to comply with. Its basically some big fans with a switch for the fire dept. to use. Atriums that connect 3 floors is one example where these are required.
The "smoke and heat vents" are more stringent. They may need emergency back up power, fire resistant wiring methods and even a fire command center. I think these are more typical in high rise applications.
Steve