Figure 12: Open Door From Wp820; Figure 13: Zoom Options From Wp820 - Grandstream Networks GDS3710 Configuration Manual

Figure 12: Open Door from WP820

When Call is answered, the user can proceed from Options Zoom to enter the zoom interface. This
interface allows the user to choose zoom in on certain sections of the image (use the direction arrows to
move from sections or use the digits from "0" to "9"). Then you need to click on "Confirm" to view the selected
section and to go back to the call screen.

Figure 13: Zoom options from WP820

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Connecting GDS3710 with WP820 Configuration Guide