How do i go about installing a bluetooth car kit for a mercedes wherein i can use any mobile phone?

There is a standard provision where i can use a nokia phone which can also be controlled by the pick up call option on the steering wheel.
But i would like to install a bluetooth kit to the existing car phone kit which in theory should help me use any phone of any make and be able to pick up my calls on the wheel as well.

Information in this regard would be greatly appreciated

 

i don't know what model you got but i know you got D2B.

all you need is interface.

the latest one is motorolla with bluetooth.