Programming instructions

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 two-line display, LCD speakerphone and its interactive

buttons to search through an index of names, locate a desired station name or system speed dial

name, and automatically call the located item.

Digital Voice Announcing (DVA)

The DVAis 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 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.

Exclusive Hold

Only the telephone placing the call on hold can retrieve it.

Executive Override Breaking into a conversation at a busy called telephone. This intrusion is

announced by several quick tone bursts over the conversation.

Attendant Manual - DSU II Digital Expandable System 113

GCA70-245 Glossary