No one should call back. What you were jabbering about wasn't that important anyway.

Sounds like the beginnings of a Seinfeld episode.

Who ARE these people that Double-call The Callback?

oh I do miss seinfeld ;)

Why don't we make like TCP/IP packets: if there's a collision (i.e., you reach voicemail on a callback after a dropped call), wait a random number of seconds before trying to call again.

I actually do this all the time, and it works great.

Exponential backoff also works exceptionally well in the case of dead batteries.

This not new. The phone etiquette since Day 1 has been that the person who made the call, redials.