They are starting new no hand-held cell phone laws here soon. I have '99 A6 with bose and "intergrated" phone system. Is there a way to convert this using blue tooth or something. I have never used this system, but according to owner's manuel it will mute stereo and allow you to talk through a small mic on head unit and you can hear call through one of the speakers. It has a standard (land-line) plug in center counsel. Has anyone converted this to be wireless? Any help appreciated.