Find "Volume"
Press Menu.
Scroll to Settings and press OK.
Scroll to Profiles and press OK.
Highlight the active profile and press Options.
Scroll to Edit and press OK.
Scroll to Volume and press OK.
Adjust ring volume
Scroll to Call alert and press Navigation key right or Navigation key left to select the required volume.
Save and exit
Press OK to save the setting.
Press Disconnect to return to standby mode.