Glossary |
D
Data Interface Unit (DIU)
This optional unit provides connections for your standard multiline digital telephone and Industry Standard Telephone (IST) device such as a FAX machine or answering machine.
Departmental Station Operation
The operation of stations that are organized into departments.
Dial By Name
This feature allows users to employ any
Digital Voice Announcing (DVA)
The DVA is a
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 authoriza- tion code and system access code to gain access to outside lines as well as many of the advanced telephone 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.
Dynamic Line Button
System temporarily assigns a normally unassigned line to an idle line button for certain call handling operations.
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