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Glossary
CESID ~ DKT
GL-2 Strata
CESID Caller’s Emergency Service Identification—Telephone number for specific station or station
location which is sent to the CAMA trunk.
CCVY Call Center Viewer “Y” Connector—Enables two-way transmissions between the Strata DK
and a host PC, or SMIS equipment, and one-way transmissions to other PCs. There are four
ports on the Call Center Viewer Connector for one Strata DK, another master port, and two
additional ports.
CLASS Custom Local Area Signaling Services—Defines a number of features offered by local
telephone companies.
CLID or CND Calling Line Identification or Calling Number Delivery—Telephone number or name of the
calling party sent to the Strata DK system over incoming ground or loop start CO lines. This
feature is one of the “CLASS” features offered by some local telephone companies.
CO Central Office—The facility which houses switching equipment that provides telephone
service (CO lines, E & M tie lines, DID lines, Centrex lines, etc.) for the immediate
geographical area.
CO Line A term used to define the Strata DK system hardware circuits that connect to the Central
Office network line pair. Each CO line, DID and tie line circuit is assigned a CO line number in
system software.
CODECs Coder/Decoder—Semiconductors that allow the system to process analog-to-digital and
digital-to-analog conversions.
DADM Digital Add-on-Module—Optional device that connects to 2000-series digital telephones to
provide the telephones with 20 flexible feature buttons that can be assigned individually for
Direct Station Selection, System and Personal Speed Dial, and CO line access.
D-channel Used in ISDN. This channel transmits call control information (out-of-band signaling) for B-
channels. The D-channel is a logical, not a physical channel.
DDCB Digital Door Phone/Lock Control Unit—A peripheral hardware unit compatible with
designated digital telephone circuits that supports optional door phones (MDFBs) and
provides door lock control.
DDSS Digital Direct Station Selection Console—A device that helps facilitate the processing of a
heavy load of incoming calls. The DDSS connects only to designated digital telephone
circuits, and is associated with a digital telephone.
DIL Direct In Line—Refers to two-way, standard CO trunk lines that are assigned to a particular
extension or hunt group.
DID Line Direct Inward Dialing line.
DISA Direct Inward System Access—A feature that allows an outside party to access the Strata
DK system internal stations or outgoing CO lines without having to go through an operator or
automated attendant. An optional security code may be set to prevent unauthorized access
to outgoing CO lines for through system calling.
DK Digital Key.
DKAdmin Toshiba's customer database programming and upload/download software package for
Strata DK systems.
DKBackup Toshiba’s customer database upload/download software package for Strata DK systems.
DKT Digital Telephone.
Term Definition