Vertical Communications SCS 8324S - Manual (Page 154)

Glossary
144 Comdial August, 03
Digital Voice Announcing (DVA)
The DVA is a line-powered device that provides voice prompts for
auto-attendant and transfer, or you can use it to enhance the operation
of DISA and Tracker.
Direct Inward System Access (DISA)
An enhancement option that allows outside callers to directly call a
station or access certain internal system features, including all line
groups and ARS. To prevent fraudulent access and unauthorized use,
the caller must use an authorization code and system access code to
gain access to outside lines as well as many of the advanced tele-
phone features.
Direct Inward Station Dialing (DISD or DID)
This feature allows an outside party to call an intercom station
directly without an attendant’s assistance.
Direct Station Selection/Busy Lamp Field (DSS/BLF)
Programmable buttons which allow the user one button to place
intercom calls to other stations within your system; the button is
sometimes referred to as a DSS button. Busy lamp field or BLF is a
term for a light that identifies current call status of DSS station. See
telephone layout drawings in Chapter 1 for location.
Do Not Disturb
A mode that disables incoming call ringing and intercom calling.
Dual Tone Multiple Frequency (DTMF)
The tones made by your telephone when you dial.
DXP, DXP Plus, FXS and FXT
Common Code Based Systems; DXP, DXP Plus, FXS and FXT
Comdial Communication Systems so named because the programmed
function codes of these systems are interchangeable.
Dynamic Line Button
System temporarily assigns a normally unassigned line to an idle line
button for certain call handling operations.