Get Rssi of RFBee with Arduino

I got Final Year Project to get RSSI value of RFBee with Arduino. But I don't know to do that because most tutorials show how to get RSSI value of Xbee. I notice that digital pin of Xbee is not same as RFBee. Thats make me more confuse how to do. I hope someone can show me how to get RSSI value of RFbee with Arduino. Thank you :)