My Bose Audio unit has BT built into it with audio & BT controls on the steering wheel. I have programmed the HU's phonebook with a few contacts whom I call regularly. So I do not have to pick up the phone to call them.
In case of an incoming call, the audio is muted and if the contact is configured in the HU's phonebook, their name is announced over the speakers, otherwise it just announces "You have an incoming call". Since I have set up separate rigntones for people whom I know and call me regularly, I know who's calling when it rings itself. Up to me whether to answer it or not and is done by the press of a button on the steering wheel. Pretty convenient feature.
If i get a call while driving, I answer the call only if i'm alone. and talk if its my parents or girlfriend who's calling. Its nice to hear their voice on a 9 speaker dolby surround sound system.
