Important: The Tone menu must be selected
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Ring tone selection
Press the control button for Telephone.
Turn the rotary pushbutton to Ring tone selection and press the rotary pushbutton.
Turn the rotary pushbutton to mark a ring tone. The ring tone you have selected will ring briefly.
Press the rotary pushbutton to store the selected ring tone.
Ring tone volume/Volume of telephone call
Press the control button for Telephone.
Turn the rotary pushbutton to Ring tone volume/Volume of telephone call and press the rotary pushbutton.
To adjust the volume, turn the rotary pushbutton clockwise or anti-clockwise and press it.
Note
You can also set the options Ring tone selection, Ring tone volume and Volume of telephone call while you are in telephone mode
Link.