From the customization options, select Ringing tone; then scroll through the available
tones and select the one that you want to use.
As you scroll through the ringing tones, you can listen to a sample of each if your current
ringing option is not set to Silent or Beep once.
If you have already chosen a ringing option of either Silent or Beep once, the ringing tones
are already turned off. See “Ringing options” on page 28 for details.
RINGING VOLUME
You can set the default ringing volume for incoming voice calls and message
alert tones.