I just paired a blackberry tour with my motorla ihf1000 carkit bluetooth. When a call comes in and i press the green button the caller can't hear me and i can't hear the caller. If i press the green button on my phone it works. Outgoing calls are no problem.

The Plantronics Explorer 245 headset can be paired with most Bluetooth-capable phones and smartphones to enable hands-free phone conversations. To pair the headset with a BlackBerry Tour, follow the steps below:

Make sure the Plantronics headset is off before trying to pair the two devices. On your BlackBerry, scroll down to Manage Connections (the antenna icon) in your Home folder and click the trackball. From the list of connections, select Set Up Bluetooth. The Add Device box will appear, asking if you want to search or listen for a Bluetooth device.

At this point, turn your Explorer 245 on by sliding the on/off switch toward the microphone end of the earpiece. Once the device powers on (if you have it in your ear, you'll hear a few short tones) you should see repeating red and blue flashes from the LED lights on the side of the headset. If you only see blue flashes, hold down the call button (the side button) for a few seconds, until the lights start flashing red then blue.

Now, on your Tour, select Search. Bluetooth will be enabled if it's not already, and then the BlackBerry will search for nearby devices. When the headset appears on the list of devices found (it should read "245Plantronics" or something similar) select it. A box will appear letting you know that pairing is now complete, and asking if you want to connect to the headset. Select Yes.

Your BlackBerry Tour and Explorer 245 are now paired. If at any point you turn the headset off, turn the BlackBerry off, or turn the BlackBerry's Bluetooth feature off, the two devices will automatically reconnect when they are able. When you look at your list of paired devices on the BlackBerry, the Explorer headset will appear in bold to show that it is currently connected.