I have a JVC NX7000 with the bluetooth module, in my car.
When I am connected via bluetooth to the unit:

I dial from the iphone.
I hear ringing in the car bluetooth speakerphone.
I press the audio sources button on the ip4 (latest software).
I choose Iphone.
Iphone transfers everything back to iphone,
essentially bypassing the bluetooth. (as it should be)

THEN, when someone picks up, it switches back to the bluetooth car speakerphone.
THIS IS NOT AS IT SHOULD BE.

I have already spoken to JVC. There are no updates to the bluetooth module, or 7000 software.
In any case the decision to transfer the call via bluetooth is
made by the iphone not the car unit.

I have spoken with apple geniuses.
They have replaced my phone.
I still have the same problem.

Any suggestions on how to eliminate this behavior?
Thanks,

Dan