Ping Using Cisco Unified Personal Communicator

I have been using a short key ping command in CUPC, and have misplaced my notes on the key command to send a Ping from one CUPC User Message Box to another… Does anybody know what it is, how to do it… This would be where you send a Ping to a another user in the IM system, and in their window it shakes and displays the red Ping message…

Thanks for your help with this…