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AB-4
ABBREVIATIONS
PDS
PRI
RBS
REC
RFA
RGI
RMATS
SAO
SCS
SDN
S/DTT
SID
SLC
SLIM
SMT
SS7
TCM
TEG
TMS
TSI
TTL
TTTN
TVC
TVS
UDP
UUI
VMAAP
VNL
V
VBR
W
WATS
ZCS
premises distribution system
primary rate interface
robbed-bit signaling
Regional Engineering Center
remote frame alarm
Remote Group Interface
Remote Maintenance, Administration, and Traffic System
special-access office
system clock synchronizer (TN463)
Software Defined Network
ISL digital tie trunk
station identification number
subscriber link code
subscriber loop interface module
system-management terminal
signaling system number 7
traveling class mark
terminating extension group
time-multiplexed switch
time-slot interchanger
terminating test line
tandem tie-trunk network
trunk verification by customer
trunk verification by station
Uniform Dial Plan
user-to-user information
visual maintenance and administration panel
via-net loss
volt
variable bit robbed
watt
Wide Area Telecommunications Service
zero code supression