More than that, if the occupancy requires sprinklers, or you decide to install sprinklers, then when a sprinkler activates it must also trigger the "occupant notification system". This is true even if the occupancy doesn't otherwise require a fire alarm. The best way to provide an "occupant notification system" is to install a fire alarm panel and run the horn/strobes of it. At my prior employer we did this for a number of office buildings. Tons of sprinklers, and the only smokes were over the panel, annunciator, and any NAC booster panels that were installed. Plus, in NJ all sprinkler systems in commercial occupancies have to be monitored at a central station. Might as well us the FA panel to do that as well.In the IBC, Section 907.2, it says to install a fire alarm system and occupant notification per 907.2.1 - 907.2.23.
So if you have an occupancy that needs a fire alarm system listed in those sections, then you need notification that is described in 907.5