Nortel Networks Nortel 4075 - Manual (Page 236)

Terms you should know
236
Soft keys
Two keys located below the display, that have different functions
and labels depending on the current operational mode of the
handset
System or Switch
Your office communication system.
Traditional DECT
Nortel DECT system based on DMC cards.
Voice mail
A system that allows you to exchange spoken messages with
other users.