2 Structure and Appearance2.1 Front PanelNote:Only VTH5221D(W)-C has front camera and other models do not support front camera.Front panel is in Figure 2-1. Components are defined in Chart 2-1.Figure 2-1No. ComponentNameDescription1 Camera CoverSwitch Slide, you can cover or open camera.2 Camera -3 MIC -4 Screen -5 Unlock During incoming call, call, and monitoring, press this button tounlock corresponding door.6 Monitor Monitor VTO video.7 Homepage Press this button to return to homepage.8 Call In call status, press this button to accept call; during call, pressthis button to hang up.