What kind of phone do I have?

[Dr. C]

OK, last question for the day. I bought my '04 X3 CPO approx 18 months ago. The car is equipped with phone buttons on the steering wheel (R/T and a speaking face symbol) and the dash ("Info" with a phone handset symbol), there seems to be a microphone in the headliner and the NAV menu includes a phone directory. When I push the Info button the phone dials something but then I get a service error recording from Verizon. The dealer can't tell me anything about this phone--how I can activate it, whether it works on other services (I'm with AT&T right now), etc. And there's nothing in the manuals. Ideally, I convert to BT and use my current phone. The car came with a BT card in the owner's manual but there's no BT code for pairing, which suggests to me that it's not BT equipped. Dealer says I'm looking at something like $800 to go BT. What kind of phone do I have? I've read a number of the BT articles and I'm probably not technically up to doing it myself. I long for a BT set-up that uses the car's phone controls and directory. Thoughts from the board?