Filter
Top Products
Abbreviations 66
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