4. When you first power up the P7000BT, it will be in default mode, which automatically connects to Bluetooth products that have been configured to connect to the head unit. To link the head unit to your phone though, you'll have to either program the phone to look for the head unit or vice versa. The phone can be programmed using the options menu on it and so can the head unit. The P7000BT offers a ton of cool features like an Auto Answer mode, which shuts off the music and answers incoming calls as they arrive.