I have seen a few posts here and there about an issue that is annoying me as well.
I am using the btb200 with avic d3 and blackberry curve 8330 on telus mobility.
If I am on a call, and I receive another call, the d3 rings constantly without allowing me to accept or ignore the new call. Inititally thought this may be my bt unit but its not. I have tried a Rogers blackberry pearl 8100 and was successfully able to used call waiting with my D3 without problems.
This lead me to investigate further. It seems that the Telus/Verizon versions of blackberries are missing some BT profi