Cisco Systems IP Phone 8941 and 8945 manual Your Phone

				Your Phone
14	Headset button	Selects the headset as the default audio path and initiates a new call,
		picks up an incoming call, or ends a call. During a call, the button is
		lit green.
		A headset icon		in the phone screen header line indicates the headset
		is the default audio path. This audio path does not change until a new
		default audio path is selected (for example, by picking up the handset).
15	Volume button	Controls the handset, headset, and speakerphone volume (off hook)
		and the ringer volume (on hook).
		Silences the ringer on the phone if an incoming call is ringing.
16	Messages button	Auto-dials your voicemail system (varies by system).
17	Applications button	Opens/closes the Applications menu. Depending on how your system
		administrator sets up the phone, use it to access applications such as
		call history, preferences, and phone information.
18	Contacts button	Opens/closes the Contacts menu. Depending on how your system
		administrator sets up the phone, use it to access personal directory,
		corporate directory, or call history.
19	Phone Speaker	Speaker for the phone.
20	Programmable feature	Each corresponds with a phone line, speed dial, and calling feature.
	buttons (also called	Pressing a button for a phone line displays the active calls for that line.
	Line buttons)
		If you have multiple lines, you may have an All Calls button that
		displays a consolidated list of all calls from all lines (oldest at the top).
		Then it is recommended that you keep your phone in the All Calls view.
		Color LEDs indicate the line state:
		•	Amber	—Ringing call on this line
		•	Green	—Active or held call on this line
		•	Red	—Shared line in-use remotely
		(The positions of the feature buttons can be reversed on phones that
		use a locale with a right-to-left reading orientation, such as Hebrew
		and Arabic.)
21	Handset rest	To rest the phone handset.
		When there is an incoming call, the LED in the handset rest flashes red.
		If there is a new voice message, the LED is lit red.

Cisco Unified IP Phone User Guide for Cisco Unified Communications Manager 8.5 (SCCP and SIP) 17