Avaya 3641, 3645 manual Indicator Function

The Handset

Indicator	Function
	The priority PTT ring icon. A call is coming in
	on the priority PTT channel. This call will
	override any other.
Muted	The muted indicator displays after the Mute
	softkey has been pressed. It indicates that
	the microphone is not transmitting sound.
	Press the Mute softkey again to unmute the
	microphone.
Locked	Locked indicates that the keypad is locked to
	prevent accidental activation. Use the Unlk
	softkey plus the # key to unlock it.
[No Service message]	If warning tones are enabled, an alarm will
	sound and a descriptive message displays
	when the handset cannot receive or place
	calls. You may be outside of the covered area.
	Walk back into the covered area. The in-service
	tone indicates service is re-established.
	The download icon indicates that the handset
	is downloading code. This icon only appears
	while the handset is running the over-the-air
	downloader. It appears to the right of the
	signal strength icon in the same location as
	the voicemail icon.

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