The telephone module with Bluetooth SAP  is designed to extend the mobile communication system in your Mercedes-Benz. Just connect it to your Convenience Telephony system (Code 386) in the centre armrest, and start using your mobile via the on-board hands-free system. The telephone module features a SIM card reader. Comparable with a permanently installed phone.
Other advantages of the telephone module:
When it comes to selecting a mobile phone for your Mercedes-Benz, you’ve never had so much choice. One "click" is all it takes to replace the mobile phone cradles. It takes a matter of seconds and is as easy as inserting the mobile into one of the cradles. That means changing your mobile and even swapping models no longer presents a problem – convenient telephone technology included.
 Two versions of the Mercedes-Benz Bluetooth (SAP) telephone module are available: one in the form of a closed box (pictured) and the other with a corded handset (not pictured). Both versions feature a SIM card reader.
 Can be used with optional extra "Code 386 Convenience Telephony".
 SAP (SIM Access Profile) allows the module to read your mobile phone’s SIM card
 Depending on vehicle model and mobile phone. If you have any questions about compatibility with your particular vehicle and mobile, please contact your Mercedes-Benz partner. You can find additional information at www.mercedes-benz.com/connect