MERLIN LEGEND Communications System Release 6.1
System Programming Guide
555-661-111
Issue 1
August 1998
Glossary
Page GL-8
D
COR (class of restriction) Various types of restrictions that can
be assigned to
remote access
trunks or barrier codes.
These restrictions consist of calling restrictions,
ARS
Facility Restriction Levels (
FRL
s), Allowed Lists,
Disallowed Lists, and Automatic Callback queuing.
Coverage Set of system features that can determine how extensions’
calls are covered when the person at the extension is busy
or not available.
CRC (cyclic redundancy check) An error-detection code used on
DS1
facilities with the extended superframe format (
ESF
).
CSU (channel service unit) Equipment used on customer
premises to provide
DS1
facility terminations and signaling
compatibility.
CTI link (Computer Telephony Integration) link. A hardware/
software feature that is part of the PassageWay Telephony
Services application. It allows the use of Lucent
Technologies-certified software applications on a
LAN
running Novell NetWare software in a
Hybrid/PBX mode
system. These applications may provide special features
for client control of such calling activities as power dialing.
See also
screen pop.
cyclic redundancy
check
See
CRC
.
D4 framing format
Framing format
consisting of a sequence of individual
frames of 24 eight-
bit
slots and one signal bit (193 bits) in a
12-frame superframe. See also
ESF
.
Data-channel See
D-channel
.
data
communications
equipment
See
DCE
.
data module A type of
ISDN terminal adapter
that acts as the
DCE
at a
data workstation
that communicates over high-speed
digital
facilities.
data rate See
bps
.
data station Special type of extension where data communications take
place; includes
DTE
and
DCE
; sometimes a telephone is
also part of a data station.
data terminal An input/output device (often a personal computer) that can
be connected to the control unit via an interface.
data terminal
equipment
See
DTE
and
data terminal
.
To Next Page
Loading...
Need help?
General
