It’s put on something called carrier waves, etc, to make the phone call happen, but your actual voice is transmitted all the way via Business Telephone systems to the person on the other side of the line. So whether the person is sitting in an office three doors down, or whether the person is sitting in Japan, if that is an analog telephone call, your actual sound waves are getting transmitted all the way over to Japan.
The problem is since your actual sound waves are getting transported all the way to Japan, it there is any static or if there is any interference on the line, that interference gets put onto that analog line. So basically if you’re talking over a long distance and there’s a thunderstorm, that thunderstorm can create interference and it makes static and the rest of that. So what they did is they came up with digital communication. So what digital communication telephone systems do is they turn your voice into ones and zeros.