Will It Still Play

I was recently watching one of my favorite Woody Allen films, Play It Again, Sam (he didn't direct, but he wrote and stars in it).

There's one bit in the movie that's also in the stage version. Tony Roberts is a businessman who's Woody's friend and Diane Keaton's husband. He constantly calls people to update them on what phone number he can be reached at. In the future, this gag may be incomprehensible.