Not only is this confounding, but dangerous. As you drive, and want to dial out you have to use the dash's poorly placed tele-pad panel (the dial panel is too low and too far to the right from the driver's position) and use the same hand to use the poorly placed steering wheel controls for the volume, mute, phone and push to talk buttons that may not work as they should based on what package your car comes with. So Mercedes Bluetooth Sytem replaces dialing using one device (your handheld) with like 3 different ways to dial out (Voice dial seemingly not being one of them) that can be dangerous and confusing. This Bluetooth System works best when receiving calls as the media screen displays the number ID of the caller. This is my gfriends car.
On my BMW 3 Series the Bluetooth operates on only 2 buttons placed on the driver's left side on the steering wheel. BMW Bluetooth includes voice dial, redial, push to talk, but does not display the number ID on the radio interface.
The purpose of this video was to compare the 2 Bluetooth systems and to show how less is more and keeping it simple is safer, better and procures a cleaner driving habit.