Abbreviations
O
OA&M
operations, administration, and maintenance
OP
operate
OS
operating system
P
PBX
private branch exchange
PC
power converter or personal computer
PDM
processor data module
PEC
price element code
POST
R
RAM
REN
ringer equivalence number
RMV
remove
RNA
ROM
RSC
route restriction class
RTS
request to send
RTU
right to use
S
SCSI
small computer systems interface
SID
switch integration device
SFC
service feature class
SFI
service feature index
SIMM
single
SMDI
simplified message desk interface
SMSI
simplified message service interface
STN
station
STRC
Sales and Technical Resource Center
SW
switch integration (INTUITY software component)
SYS
system
