What is Onboard Hands-Free Communications System, in a 2005 Cadillac CTS?

I'm purchasing a 2005 Cadillac CTS and would like to know if my phone will connect to the Onboard Hands-Free Communications System. Is this possible or does this have something to do with OnStar? Thanks for your help.What is Onboard Hands-Free Communications System, in a 2005 Cadillac CTS?your phone will work just fine the hands on feature is nice you tell the car to dial what number and to call who and to take voice messages from you in the car its really nice once you get the hang of it. and when you do i bet you that you'll be on the phone more while enjoyng your drive shoot i love mine its my office on wheelsWhat is Onboard Hands-Free Communications System, in a 2005 Cadillac CTS?It is part of OnStar. You can either buy minutes from OnStar to use it, or if have Verizon Wireless you can use your Verizon minutes instead of buying minutes from OnStar. (To use your cell phones minutes you would have to sign up at your Verizon dealer) It isn't a Blu Tooth system. That will be on the 2009 models. If you are buying this car from a GM Dealership your salesperson will be able to explain it in full detail to you.What is Onboard Hands-Free Communications System, in a 2005 Cadillac CTS?I just saw another question about this.

Isn't this a cell phone you can use to steer the Cadillac with so your hands are free to take notes on your cell phone conversations?