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VOICE CALL
MUTE
VOICE CALL/MUTE:
Used
to monitor an intercom call
automatically, but it cannot be
used for hands-free
conversations. It also mutes the
handset microphone during a
conversation.
FWD/DND
Call Forwarding (FWD)/Do Not
Disturb (DND):
Used to perform Call Forwarding
(FWD) or Do Not Disturb (DND).
PROGRAM
PROG.
PROGRAM:
Used to enter and exit the
Programming mode.
ANSWER
ANSWER:
Used to answer an incoming call.
User Manual 25
1.1.1 Before Operating the Telephones