Instruction manual
INTUITY Messaging Solutions Release 4
MAP/5P Maintenance
585-310-186
Issue 3
October 1997
Glossary
Page GL-9
CPU
See
central processing unit
.
cross connect
Distribution-system equipment used to terminate and administer communication circuits.
cross connection
The connection of one wire to another, usually by anchoring each wire to a connecting block and
then placing a third wire between them so that an electrical connection is made.
CSI
See
called subscriber information
.
CTS
See
clear to send
.
D
DAC
See
dial access code
.
database
A structured set of files, records, or tables. Also, a collection of filesystems and files in disk mem-
ory that store the voice and nonvoice (program data) necessary for Lucent I
NTUITY system opera-
tion.
data communications equipment (DCE)
Standard type of data interface normally used to connect to data terminal equipment (DTE)
devices. DCE devices include the data service unit (DSU), the isolating data interface (IDI), and
the modular processor data module (MPDM).
data communications interface unit (DCIU)
A switch device that allows nonvoice (data) communication between a Lucent I
NTUITY system and
a Lucent switch. The DCIU is a high-speed synchronous data link that communicates with the
common control switch processor over a direct memory access (DMA) channel that reads data
directly from FP memory.
data link
A term used to describe the communications link used for data transmission from a source to a
destination, for example, a telephone line for data transmission.
data service unit (DSU)
A device used to access digital data channels. DATAPHONE II 2500 DSUs are synchronous data
communications equipment (DCE) devices used for extended-local Lucent I
NTUITY system con-
nections. The 2600 or 2700 series may also be used; these support diagnostic testing and the
DATAPHONE II Service network system.
data set
Another term for a modem, although a data set usually includes the telephone. See also
modem
.
data terminal equipment (DTE)
Standard type of data interface normally used for the endpoints in a connection. Normally the
Lucent INTUITY system, most terminals, and the switch data link are DTE devices.
DBP
See
data base processor
.