Animesis

Hello chaps Finally bit the bullet and got myself a lovely racing Green S type a couple of months back, absolute pleasure -occasional lurch unfortunately but thats life- The car has the phone mounted in the centre arm rest, but when I press the call button on the steering wheel it goes into mute suggesting that theres no voice control from what Ive read The phone works fine With that in mind, what parts do I need to install blue tooth? Does the built in phone have any of the modules needed for it, or do I need to buy all microphone, BTUM bluetooth module, and a bluetooth phone module? Many thanks in advance Tom