Another success with an Acura TL. As stated above, I could not initiate the call with the car, I had to use the phone. Once I selected to continue with the headset, the car took over and worked perfectly.

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My sordid past:

Kyocera 6035, Kyocera 7135, Samsung i700, iPAQ 6315, iPAQ hx4705, Motorola a630, BB 7100t, iPAQ rx3115, JAM 850, BB 8700g, Samsung i320 (just for fun), imate KJAM, TMO SDA, MDA, TMO Wing