Although most of us take it completely for granted, the telephone you have in your house is one of the most amazing devices ever created. If you want to talk to someone, all you have to do is pick up the phone and dial a few digits. You are instantly connected to that person, and you can have a two-way conversation. The telephone network extends worldwide, so you can reach nearly anyone on the planet. When you compare that to the state of the world just 100 years ago, when it might have taken several weeks to get a one-way written message to someone, you realize just how amazing the telephone is!


This illustration shows the entire telephone network, including a home connection, cell phone towers, long distance exchanges and transcontinental connections. Click here to see the animated version!

In this article, we will look at the telephone device that you have in your house as well as the telephone network it connects to so you can make and receive calls.