76Additional features and controls
LCD Indicator
A steady indicator means that an extension or feature beside it is active. A flashing indicator means the line is on hold or the feature is in the process of being programmed.
Message Waiting Lamp
The light bar at the top of your telephone illuminates with a steady light to indicate a new Voice Mail message(s) is waiting.
You access Message Waiting by pressing the Message Waiting feature provisioned on one of the feature keys in the upper display area. If you have not provisioned a Message Waiting key, access your Voice Mail by dialing your Voice Mail system.
Carrier VoIP
Nortel IP Phone 2004 User Guide (CICM)
4 July 2008