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1.1 Before Operating a Telephone
16 User Manual
Customised Buttons
Throughout this manual, when the name of a button is written in parentheses, such as "(G-CO)", this means
that it is a flexible button that has been customised. To customise flexible buttons, refer to "3.1.3 Customising
the Buttons".
CONF (Conference):
Used to establish a 3-party or 5-party
conference call.
VOICE CALL:
Used to answer an intercom call
automatically.
FWD/DND (Call Forwarding/Do Not
Disturb):
Used to set the FWD or DND feature for
the extension.
PROGRAM:
Used to enter and exit programming
mode.
Navigator Key, Volume Key:
Used to adjust the volume of the speaker,
handset and headset, and the display
contrast, or to select desired items.
Programmable Feature (PF):
Located in the right column of the CO
button array on certain telephones or on
the DSS Console. Used to access a
preprogrammed feature. Mostly used as a
One-touch Dialling button.
Customised Button Function
Single-CO (S-CO) Used to access a specified outside (CO) line for making or receiving calls.
Group-CO (G-CO)
Used to access an idle outside (CO) line in a specified outside (CO) line group
for making calls. Incoming calls from outside (CO) lines in the assigned outside
(CO) line group arrive at this button.
Other-CO (O-CO)
Used to access an idle outside (CO) line for making calls. Incoming calls from
the assigned outside (CO) lines, which are not assigned to S-CO or G-CO
buttons, arrive at this button.
Direct Station Selection (DSS)
Used to call an extension with a one-touch operation.
One-touch Dialling
Used to call a preprogrammed party or access a feature with a one-touch
operation.
Message
Used to leave a message waiting indication, call back the party who left the
message waiting indication, or play back voice messages.
Message for another extension Used to access voice messages stored for another extension.
FWD/DND (Call Forwarding/
Do Not Disturb)
Used to set the FWD or DND feature for the extension.
Save
Used to store a telephone number while in a conversation with an outside
party or while hearing a busy tone, and then easily redial the number later.
Conference Used to establish a 3-party or 5-party conference call.
Log-in/Log-out Used to switch between Log-in and Log-out status.
Extension Lock Used to remotely lock or unlock another extension.
Day Used to change the time service mode to day mode.
(PF)