UI navigation is easily performed using the navigation buttons located to the right of the LCD screen. The Left and Right navigation buttons are used to switch to the dif-
ferent screens and the Up and Down buttons are used to highlight and scroll through the different lines/calls on the respective screen. The center Select button is used to
activate a selection. The figure below provides a visual representation of the different screens and the UI behavior when a navigation button is pressed.
Note:
The Detailed-View Call Screen is only accessible when at least one call is in a ringing or connected state. Moreover, the Multi-View Call Screen is only accessible when
more than one call is a ringing or connected state.