StarPhone for Mobile - Call Retrieve Feature
With a call in progress on your desk phone (or any device you are associated with) or when it is ringing, a green bar will appear at the top of StarPhone. To Retrieve a call that is ringing on your phone tap the green bar to display who is calling. Tap the green bar again if you want to answer the call which will transfer/retrieve the call to StarPhone and take the call without interruption. To Retrieve a call that is in progress on your desk phone just tap the green bar twice.