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18
LOP - Loss Of Pointer
LOS - Loss Of Signal
LPC - Lower order Path Connection
MAC - Medium Access Control
MAN - Metropolitan Area Network
MCU - Micro Control Unit
MD - Mediation Device
MF - Mediation Function
MII - Medium Independent Interface
MM - Multi Mode
MS - Multiplex Section
MS-AIS - Multiplex Sections - Alarm Indication Signal
MSOH - Multiplex Section OverHead
MSP - Multiplex Section Protection
NE - Network Element
NEF - Network Element Function
NEL - Network Element Layer
NML - Network Manager Layer
NMS - Network Management System
OAM - Operation, Administration and Maintenance
OFS - Out of Frame Second
OOF - Out of Frame
OS - Operation System
OSI - Open System Interconnect
PCM - Pulse Code Modulation
PDH - Plesiochronous Digital Hierarchy
PJE+ - Pointer Justification Event +
PJE- - Pointer Justification Event -
POH - Path OverHead
PPP - Point to Point Protocol
PRC - Primary Reference Clock
RAM - Random Access Memory
RDI - Remote Defect Indication
REI - Remote Error Indication
REG - Regenerator
RFI - Remote Failure Indication
RIP - Router Information Protocol
RMII - Reduced Medium Independent Interface
RS - Regenerator Section
RSOH - Regenerator Section OverHead
SDH - Synchronous Digital Hierarchy
SEC - SDH Equipment Clock
SES - Severely Error Second
SESR - Severely Error Second Ratio
SETS - Synchronous Equipment Timing Source
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