NEC Dterm Series I User Manual page 8

Ringer Volume:
Press up or down key during ringing.
Programmable Keys
These are examples of Dterm® features available by pressing the programmable
keys. Some features may be programmed by the user. Keys must be
programmed by the telephone system administrator.
AICM
Press key to activate Automatic Intercom.
CB (Call Back)
Press key to activate.
DICM
Press key to activate Dial Intercom.
DND (Do Not Disturb)
Press key to activate or cancel Privacy feature.
FD-A (Call Forwarding- All Calls)
Press key to activate or cancel Call Forwarding - All Calls feature.
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