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ABBREVIATIONS
AB-3
IC
IE
INADS
ISDN
ISDN-BRI
ISDN-PRI
IXC
LAPD
LATA
LDN
LEC
LFA
LOS
LSB
MAAP
MFAT
MO
MPDM
MTBF
MTCP
MTTR
NCTE
NEC
NFAS
NPA
NSF
ONS
OPS
OPX
PAD
PAM
PCM
PDM
integrated circuit
information element
Initialization and Administration System
Integrated Services Digital Network
Integrated Services Digital Network basic rate interface
Integrated Services Digital Network primary rate interface
interexchange carrier
link-access procedure on the D-channel
local access and transport area
listed directory number
local exchange company
loss of frame alignment
loss of signal
least-significant bit
maintenance and administration panel
multifunction analog terminal
maintenance object
module processor data module
mean time between failures
maintenance test controller panel
mean time to repair
network channel-terminating equipment
National Engineering Center
nonfacility associated signaling
numbering plan area
network-specific facilities
on-premises station
off-premises station
off-premises extension
packet assembler/disassembler
pulse-amplitude modulation
pulse-code modulation
processor data module