A: I need help figuring out how to use this phone. B: Sure. First you pick up the receiver and hit one of the first 3 buttons. Do you hear a tone? A: Yes, I hear the tone. B: OK. Now you dial 9 on the keypad. Do you hear the tone change? A: Yes, it changed. B: Well, when you hear it change, that means you have an outside line. Where are you trying to call? A: I am trying to call home. B: OK. Well, to dial to the outside you just now dial the number. For a call inside the company just hit the extension number. Do you know the extensions? A: Yes, I have a list of extensions. B: Well, if you ever need help with an extension, you can dial O.