Lucent Technologies DEFINITY AUDIX Installation And Upgrade page 192

Abbreviations
DCIU
data communications interface unit
DCP
digital communications protocol
DCS
distributed communications system
DID
direct inward dialing
DIP
data interface process
DMA
direct memory access
DNIS
dialed number identification service
DSP
digital signal processor
DSU
data service unit
DTE
data terminal equipment
DTMF
dual tone multifrequency
DTR
data terminal ready
E
EIA
Electronic Industries Association
ESD
electrostatic discharge
ESS
electronic switching system
F
FIFO
first-in first-out
ABB-2
Issue 2 December 1996
FOOS
facility out of service
G
GBCS
Global Business Communications Systems
GOS
grade of service
H
Hz
hertz
I
IDI
isolating data interface
IMAPI
I messaging application programming interface
NTUITY
INADS
initialization and administration system
I/O
input/output
IRQ
interrupt request
ISDN
integrated services digital network
IVC6
integrated voice CELP card (6 channels)
K
Kbps
kilobits per second
Kbyte
kilobyte (1024 bytes)