Cell phone? on 2001 BMW 530i

I have some type of phone feature in my car. Not sure how to set it up with my cell phone. Not sure if I can or not. Anyone know anything about this?

Asked by for the 2001 BMW 530i
This is not like the newer car or like your cell phone where you can sync them up. You have to go the Dealer for them to set it up...not worth it...way too expensive.
1 more answer
I had an '01 325Ci, and there was a phone function button on the steering wheel, but the car did not have the installed option, so it couldn't be used with an external cell phone. Back in the days before Bluetooth, the setup was complicated and expensive.