06-16-2009, 04:37 PM
Join Date: Sep 2008
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I found this on Blackberry Support. Unfortunately it doesn't seem to work for my 8310 with OS4.5
Switch to a paired Bluetooth enabled device during a call
When a BlackBerry smartphone is paired with a Bluetooth enabled device (for instance, a hands-free car kit or a wireless stereo headset) and a call is answered using the BlackBerry smartphone, a Call Routed to Bluetooth Device prompt appears on the BlackBerry smartphone. Clicking Route Call to Headset will route the call to the Bluetooth enabled device. Clicking OK will close the prompt without routing the call.
* If you do not respond to the prompt within approximately five seconds of answering the call, the prompt disappears automatically. You can route the call to the paired Bluetooth enabled device later by pressing the Menu key and clicking Activate <Bluetooth enabled device>.
* If the call is answered using the Bluetooth enabled device, the call is automatically routed to the Bluetooth enabled device.