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SONET_Usr.bk Page 212 Wednesday, December 13, 2000 11:11 AM
Glossary of Terms
Glossary
LTE
LTM
M
MS
MS-AIS
MSOH
MS-RDI
MS-REI
MTBF
MTIJ
MUX
N
NDF
NE
NFAS
O
OAM
OC
OH
OLTU
OOF
OS
P
P/AR
212
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Line Terminal Equip-
PBX
ment
Line Terminal Multi-
PC
plexer
PCM
PCN
PCR
Multiplex Section
PDH
Multiplex Section AIS
Multiplex Section
PES
Overhead
Multiplex Section
POH
Remote Defect Indica-
tion
POTS
Multiplex Section
Remote Error Indica-
PRBS
tion
Mean Time Between
PSN
Failures
Maximum Tolerance
PSTN
Input Jitter
Multiplexer
PT
PTT
New Data Flag
PTE
Network Element
Non Frame Alignment
PU
Signal
Q
QoS
Operations, Adminis-
tration and Maintenance
R
Optical Carrier
RAI
Overhead
Optical Line Terminal
RDI
Unit
Out of Frame
REBE
Operations System
REI
Peak-to-Average Ratio
RF
RS
Private Branch
Exchange
Personal Computer
Pulse Code Modulation
Personal Communica-
tions Network
Peak Cell Rate
Plesiochronous Digital
Hierarchy
Percentage Error
Second
Path Overhead
Plain Old Telephone
Service
Pseudo Random Binary
Sequence
Packet Switched
Network
Public Switched Tele-
phone Network
Payload Type
Public Telephone and
Telegraph
Path Terminating
Equipment
Physical Unit
Quality of Service
Remote Alarm Indica-
tion
Remote Defect Indica-
tion
Remote End Block
Error
Remote Error Indica-
tion
Radio Frequency
Regenerator Section
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