Autocall is more common in 1990s era construction, particularly schools. EST Genesis and Integrity signals are becoming more common in some parts of the county.
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I don’t know about Autocall, because it looked like they possibly fell from the face of this planet in the 1990s, if not some time before!
But, it looks like during the 1980s and possibly the 1990s, Federal Signal owned Autocall.
And I only remember seeing EST systems with EST Genesis horn/strobes indoors and EST Integrity horn/strobes outdoors in 2 buildings, if even that, and they have been around for a while now. (One in Springfield, Vermont and one in White River Junction, Vermont.) The building in White River Junction, is where the dentist I had is at. Inside, are red wall-mount Genesis horn/strobes, by the looks of them. Looks like there’s an Integrity horn/strobe on the right of the entrance outside.
I confirmed EST Genesis horn/strobes indoors and an EST Integrity horn/strobe outdoors at an apartment building on or near Summer Street in Springfield, Vermont, because the signals were sounding one day, possibly in 2009. 
I remember seeing the strobe flashes at the building.