[RKDinOKC]

I didn't do any setup. If I dial abd start talking on my iPhone, the radio's music turns off and the raido puts a button on the screen to talk and hear over the stereo. I guess it is just recognizing a bluetooth phone in the car. The same thing happens if someone calls my phone. It turns off the music audio and provides a button on the touchscreen to answer the phone.

Again, I never programmed the radio for my phone.