how can ring tones be customized. like in my blackberry, if it is in silent mode, the customized ring tone overrides the silent mode for certain contacts that have ringtones and alerts customized
Try this!
This sets the volume setting to read the active profile setting. If you had customized the volume on your contact's custom ringtones, then that setting overrides the active profile setting which causes your phone to ring even when it is on Silent or Vibrate.
Here is a link for additional information. Click here http://supportforums.blackberry.com/t5/BlackBerry-Bold-9700-smartphone/Silent-Mode-still-Rings/m-p/524742