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Glossary
A
Automatic callback: System will ring a calling telephone when a busy
called telephone becomes idle.
Automatic set relocation: The ability of the telephone system to
relocate your extension number and restore all previous settings after a
physical move has occurred.
B
Busy Lamp Field (BLF): Rows of lights on a telephone that shows
which extensions on the system are busy and which ones are not.
C
Call forwarding: Designating another telephone to receive intercom
calls normally directed to the user’s telephone.
Call park: Placing an active call at a particular telephone in system hold
(park orbit) and retrieving it by any telephone.
Call waiting: A feature that allows a caller to signal a called party with
a tone when the called party is busy on another call. This lets the called
party know that another caller is waiting to speak to him or her.
D
Busy Lamp Field (BLF): Busy lamp field or BLF is a term for lights
on the telephone that identifies current call status of other extensions.
Dual Tone Multiple Frequency (DTMF): The tones made by your
telephone when you dial.
E
Exclusive hold: Only the telephone placing the call on hold can retrieve
it.
GCA70–246 Glossary
Single Line Station User's Guide G–1