Lost call alert

I primarily use a bluetooth headset. The lost call alert is more than penetrating and goes on for way too long. How can I change that alert?

Nobody knows the answer? Dang.

Someone has to have an answer for this. It's absolutely ear splitting, and frankly, probably causes hearing damage over time. If the volume can't be adjusted for this, we should AT LEAST be able to disable it. Is there anything out there for this?

i just spent a bit of time going through the user guides and i cant find anything on it. i dont think its possible to turn it off.