How to pair most Bluetooth telephones with DEH P980BT, DEH P9800BT, *DEH P780MP, *DEH P7800MP, DEH P790BT, DEH P7900BT, *DEH P690UB, *DEH P6900UB, *DEH P590IB, *DEH P5900IB? *CD BTB100 or CD BTB200 required There are two options in pairing Bluetooth cell phones with Pioneer headunits. Most cell phones will work with either Option 1 or Option 2. We highly recommend trying both methods. If neither method works, unfortunately the cell phone will not pair with the Pioneer headunit.