Nortel BCM 3.7, Руководство пользователя

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900 D
N0008589 3.3
directory number
See DNs.
DISA
Directed Inward System Access (DISA) is a feature that is assigned to lines to allow the
system to answer calls from users from outside the system, who want to access the system
and use system features. When this feature is active, the external user hears a stuttered dial
tone and must enter a valid class of service (COS) password to proceed.
DISA DN
This is a system directory number that is assigned to auto-answer trunks that require a
remote users to enter a COS password to gain access to the system. See also COS
password and Auto DN.
disconnect supervision
This line setting enables the system to detect if an external caller hangs up. After an
external caller hangs up, the system disconnects the line. Disconnect supervision is
defined under the module settings for the lines. (Resources, Media Bay Modules). You can
also assign disconnect supervision to devices connected to an GASM media bay module
(BCM 3.6 and newer software) to provide disconnect supervision on a per-device basis.
disk drive
A mass storage device that searches, reads and writes data on a disk.
display
A one or two line screen on a Business Communications Manager telephone that shows
commands and options for that telephone.
display buttons
The three buttons that appear below the display on a Business Communications Manager
telephone.
display options
The options available to a user. These options appear on the telephone display. Select the
options on the display using the display buttons. Enter information from the dialpad.
distinctive ring
In system programming, this feature allows you to define a distinct ring for different types
of calls, to provide a priority system for incoming calls. You can determine distinctive ring
patterns for lines, telephones and hunt groups. A hierarchy of ring patterns determines
which distinctive ring source predominates.
As a feature, the user can choose a specific ring type for incoming calls ( FEATURE *6).
DLCI
The Data Link Connection Identifier (DLCI) is used to identify a permanent virtual circuit
(PVC) in frame relay networks.