• PAM - Pulse Amplitude Modulation
• PAN - Personal Area Network
• PBX - Private Branch Exchange
• PCM - Pulse-Code Modulation
• PDU - protocol data unit
• PEAP - Protected EAP
• PIR = Personal Information Repository
• PMI = Privilege Management Infrastructure
• PoE - Power over Ethernet
• POP - Post Office Protocol
• PPTP - Point-to-Point Tunneling Protocol
• PSK - Phase shift keying
• PSN - Public Service Network
• PSTN - Public Switched Telephone Network
• QAM - Quadrature Amplitude Modulation
• QoS - Quality of Service
• QPSK - quadrature phase-shift keying
• RADIUS - Remote Authentication Dial In User Service
• RARP - Reverse Address Resolution Protocol
• RE2EE - Routed End-to-End Ethernet
• RFC - Request For Comments
• RFID - Radio Frequency IDentification
• RIP - Routing Information Protocol
• RIPE NCC - Réseaux IP Européens Network Coordination Centre
• RSSI - Receive Signal Strength
• RSTP - Rapid Spanning Tree Protocol
• RSVP - Resource ReSerVation Protocol
• SAE - System Architecture Evolution
• SAN - Storage Area Network (0334759)
• SAP - service access points
• SDH - Synchronous Digital Hierarchy
• SDSL - Symmetric Digital Subscriber Line
• SIIT - Stateless IP/ICMP Translator
• SIP - Session Initiation Protocol
• SLA - Service Level Agreement
• SMTP - Simple Mail Transfer Protocol
• SNMP - Simple Network Management Protocol
• SOA - Start of Authory
• SOAP = Simple Object Access Protocol
• SONET - Synchronous Optical Network
• SPB - Shortest Path Bridging
• SPX - Sequenced Packet Exchange
• SQL - Structured Query Language
• SSB - Single Sideband Modulation
• SSH - Secure Shell
• SSID - Service Set Identifier
• SSO = Single-Sign-On
• STP - Spanning Tree Protocol

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