A-8Acronyms Full spellingNMS Network Management StationNPDU Network Protocol Data UnitNPE Network Provider EdgeNQA Network Quality AnalyzerNSAP Network Service Access PointNSC NetStream CollectorN-SEL NSAP SelectorNSSA Not-So-Stubby AreaNTDP Neighbor Topology Discovery ProtocolNTP Network Time ProtocolO ReturnOAM Operation Administration and MaintenanceOAMPDU OAM Protocol Data UnitsOC-3 OC-3OID Object IdentifierOL Optical LineOSI Open Systems InterconnectionOSPF Open Shortest Path FirstP ReturnP2MP Point to MultiPointP2P Point To PointPAP Password Authentication ProtocolPCB Printed Circuit BoardPCM Pulse Code ModulationPD Powered DevicePDU Protocol Data UnitPE Provider EdgePHP Penultimate Hop PoppingPHY Physical layerPIM Protocol Independent MulticastPIM-DM Protocol Independent Multicast-Dense ModePIM-SM Protocol Independent Multicast-Sparse ModePIR Peak Information RatePKCS Public Key Cryptography StandardsPKI Public Key InfrastructurePMTU Path MTU
