[i8theburger]

I have installed in my truck an Alpine Bluetooth KCE-300BT which is a speaker phone that works thru the stereo head unit. I have a Samsung phone that works awesome. However, I need it to work with my pearl and although it does connect, when in use the caller at the other end can hear a very clear echo of what they have just said. I have tried in the options to select the echo control and that did not help. When the Samsung is in use, there is no echo at all.
I went into my local dealer and tried every new blackberry, and all have the same problem, a very clear echo.

Any ideas before I put my head thru a wall?