Standard on all Cayenne modes, you can establish a Bluetooth® connection with a mobile phone that only supports the Hands-Free Profile (HFP) and use the CDR audio system or PCM as a hands-free system. As a Bluetooth®-based solution, you can connect your handset without even taking it out of your pocket. The basic phone functions are accessible via the CDR or PCM head unit. Connection to the mobile phone network is via the handset antenna.