While your phone is idle (on the hook), dial 9398, 6, then #. You can try 1-9 to see what the different tones are and press # to save them. Example, after you dial 9398, press 1. If you like that one, press #. If you don't like it, press 2. Again, if you like that one, press # to save it. If you don't like it, …