Patton electronic 1052 User Manual
Page 65
Abbreviations
65
OnSite Series Getting Started Guide
C • Terms and Acronyms
L
LCAS
Link Capacity Adjustment Scheme
LFD
Loss of Frame Delineation
LOF
Loss of Frame
LOP
Loss of Pointer
LP
Low-order Path
M
MS
Multiplex Section
N
NEBS
Network Equipment Building System
NEC
National Electric Code
P
PBX
Private Branch Exchange
PC
Personal Computer
PDH
Plesiochronous Digital Hierarchy
PJC
Pointer Justification Count
PM
Performance Monitoring
POST
Power-On Self-Test
ppm
parts per million
PRC
Primary Reference Clock
PRI
Primary Rate Interface
PSC
Protection Switching Count
PSD
Protection Switching Duration
R
RS
Regenerator Section
RSOH
Regenerator Section Overhead
RU
Rack Unit (1.75 inches)
S
SD
Signal Degrade
SDH
Synchronous Digital Hierarchy
SEC
Secondary source (also Synchronous Equipment Clock)
SES
Severely Errored Second
SF
Signal Failure
SNMP
Simple Network Management Protocol
SOH
Section Overhead
SSM
Synchronization Status Messaging
SSU
Synchronization Supply Unit
S-Tag
Service provider tag
STM-1
Synchronous Transport Module level 1
Abbreviation
Meaning