Telephone News

A very over simplification on how the old phone system used to work.

A *VERY* over simplification of how the old phone system used 2600 Hz as the key frequency for handing answer supervision and SF (single frequency) dialing. Of course discovered by accident using a “Captain Crunch” whistle that just happened to be at 2600 Hz.

Telephone News coming soon!

This is where you’ll see current events for anything telephone related that I see in the news!