Corded telephones by TMC may be a relatively simple device but it modified the way we live. With this instrument, dial a few numbers and connect with someone in another state, country, or city. The phone generally functions by transforming audio surf, most often the individual voice, into electrical, or visual, signal and back to sound again at the other end. These modified signals are then able to be passed on through phone network globally. Thus allowing communication to take place in moments and hours rather than days or even several weeks.