1

Line buttons with integrated LEDs

Line buttons used for receiving calls, making outgoing calls, and answering them for other extensions or accessing features.

The LEDs integrated in the line buttons are synchronized with the LEDs on the phone. Turning off the backlight of the phone turns off the line button LEDs on the expansion module.

Line button LEDs indicate the following:

• The green light indicates an incoming call or an enabled feature.

• The red light indicates that the line is in use or the feature has been disabled.

2, 4

Left and Right page buttons

Buttons used to switch to a different active page.

3

Active page LEDs

Three LEDs indicating which active page is displayed.