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