A) The remote controller is a basic component for RP product, while for TP product the remote controller is an optional one. and B) The difference between TP3206-70 and TP3206-65 is the screen size. and C) The conference control PAD is a basic component for TP product, while for RP product the control PAD is an optional one.

D) The difference between RP100 & RP200 is the numbers of TV.