What Town/Village/Hamlet/ County are you referring to?
I am fairly certain he is referring to the department that sits on the Monroe/Wayne County line on Ridge Road up near Lake Ontario. Their ambulance covers an eastern part of the Town of Webster in Monroe County plus all of their district that lies in the Town of Ontario in Wayne County. Their fire units service just the Wayne County portion of their district. At least it was that way when I retired.
The ambulance was primarily dispatched on Monroe County's Fire Channel 5 (County Wide Dispatch on 154.3100). Fire was too, but they had some kind of system where Wayne County could directly alert them as well.
Wayne has since gone to a new system so I am not current on some of the details out there.
Their Monroe County ambulance dispatch tone outs are on the Monroe County Wiki page. I looked at Wayne County's Wiki page, and they have a tone set listed for the ambulance as well on a Wayne County frequency as well.
I did not see any fire tones out info on either page.