Push-button telephone Touch-Tone Push-button telephone - Wikipedia, the free encyclopedia were still more widely used push-button telephone pushbutton era Touch-Tone pushbutton era DTMF tones pushbutton era Push-button telephone four decades Push-button telephone English push-button telephone push-button telephone push-button telephone Push-Button-Phone push-button telephones Touch-Tone push-button telephone Push-button telephone pushbutton era More info More info push-button telephone push-button telephones More info pushbutton era