Terms you should know
Waiting, All Lines Forwarded to: 6453, Do Not Disturb On, Ring Again active, and Ringer is OFF.
System or Switch
Your office communication system.
Switchhook
A button on which the handset presses down, disconnecting your call when you replace the handset. The handset (when lifted) releases the switchhook, and you either answer an incoming call or you receive a dial tone to make a call.
User interface
Screen displays that interact with the end user as a result of an action or event.
Visual Alerter/Message Waiting indicator
An LCD or an LED that flashes to indicate that a message is waiting or when the ringer is on.
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