Oh, I agree! And so do the boys and girls who asked me for this.
They want a list because the new management people, when presented with that argument, said that there can't be that many things a pager tone would interfere with.
They want to demonstrate, concretely, what a lot of baloney that is.
I heard a bit of what I think is a concerto for orchestra and cell phones on the radio the other day. The composer has placed a red light on the stage, and when it goes on, everyone in the audience is encouraged to make their cell phone ring. The orchestra simulates cell phone rings in the body of the piece too.
Thanks, Bowser!