Avaya G700 Installation And Upgrades page 327

data path
The end-to-end connection that is used for a data communications link. A data path is the combination of all elements of
an interprocessor communication in a distributed communications system (DCS). See also
system (DCS).
data port
A point of access to a computer that uses trunks or lines to transmit or receive data.
data rate
bit rate
See .
data service unit (DSU)
See channel service unit/data service unit
data terminal
An input/output (I/O) device that has either switched access or direct access to a host computer or to a processor
interface.
data terminal equipment (DTE)
Equipment that comprises the endpoints in a connection over a data circuit. In a connection between a data terminal and a
host, the terminal, the host, and the associated modems or data modules comprise the DTE.
dBA
Decibels in reference to amperes
dBrnC
Decibels above reference noise with C filter
DCE
See data communications equipment
D-channel
A data channel over which ISDN messages are transported to control the call setup of one or more B-channels.
D-channel backup
The type of backup that is used with nonfacility associated signaling (NFAS). A primary D-channel provides signaling
for an NFAS D-channel group (two or more PRI facilities). A second D-channel, on a separate PRI facility of the NFAS
D-channel group, is designated as backup for the D-channel. Failure of the primary D-channel causes automatic transfer
of call-control signaling to the backup D-channel. The backup becomes the primary D-channel. When the failed channel
returns to service, that channel becomes the backup D-channel. See also
DCO
Digital central office
DCP
Digital Communications Protocol (DCP)
See
DCS
Distributed communications system
DDC
Direct Department Calling
DDD
See Direct Distance Dialing
DEFINITY LAN Gateway (DLG)
An application that uses a TCP/IP Ethernet transport instead of the traditional Basic Rate Interface (BRI) transport to
provide the functionality of Adjunct-Switch Application Interface (ASAI).
Installation and Upgrades for G700 with S8300 or S8700
555-234-100 — Issue 3 — May 2003
(CSU/DSU).
(DCE).
.
(DDD).
distributed communications
nonfacility-associated signaling
Glossary:
(NFAS).
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