This in mind, one would think that a scene involving a discussion about the pager would be included in Captain Marvel, but that hasn’t been entirely confirmed yet.
At the very least Jonathan Schwartz’s comments make it sound like it’s something we could get to see.
There has been a lot of speculation about Nick Fury’s special 90s-era messaging device, and the assumption at large is that Fury set it up as a line of communication between himself and Captain Marvel just in case of a world-ending emergency that required her assistance (and it’s specially outfitted with technology that gives it some extreme range).