switch from bluetooth to handset to speakerphone?

[Jupiter600]

well im coming from the palm Pre, and when I'm on a phone call, theres a button to switch from using the bluetooth earpiece, the handset, or the speakerphone

The problem is, i'll have my phone, it rings, but my bluetooth is in the other room, but the phone answers on the bluetooth.... how can i make a quick change to be able to answer it through the headset? (or cut the bluetooth earpiece off without actually using the Bluetooth OFF button in the settings)

possible?