Motorola has a control panel to enable
or disable "flip answer". In other words: if you want you can switch off the answering by opening the flip cover! In this way you can peek who is calling and decide whether you want to accept the call, reject the call or just ignore it; (in the \Programs\Settings\Phone Settings\Flip Answer, It can be choosen to turn the Flip Answer ON/OFF)
if the flip cover is closed, then two clicks down on the volume switch with the flip closed will reject
the call, other words: you can press the "volume down" key to turn the ringtone off, or
press the "volume down" key twice to reject the call