for those of us that are not lucky enough to be in perfect coverage areas we have to deal with this sound some times 25 + times a day I use a blue parrot headset it has a actual speaker and when this comes on i have to rip it off my head or i fear i will go deaf or at least get a tumor need to change this asap shut it off would be good it sits in a cradle so i can see when i loose a call I don't need a deafening sound to tell me i have lost one come on blackbery get you program together