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Glossary
36 Comdial September, 02
Direct Inward Dialing (DID)
This feature allows an outside party to call an intercom station
directly without an attendant’s assistance.
Do-Not-Disturb
A mode that disables incoming call ringing and intercom cal-
ing.
Dual Tone Multiple Frequency (DTMF)
The tones made by your telephone when you dial.
E
Executive Override
Breaking into a conversation at a busy called telephone. This
intrusion is announced by several quick tone bursts over the
conversation.
H
Hookflash
Action that occurs when the TAP button is pressed or when
momentarily depressing and releasing the hookswitch in a
specified period of time (typically 600 milliseconds).
Hookswitch
The switch on a telephone which, when depressed manually or
by the handset, disconnects a call.