• AAA - Authentication, Authorization & Accounting
• ACK - Aknowledgement, kuittaus vastaanotettuun viestiin [Hellevi Kunnas]
• ACS - Access Controller Server
• A/D - Analog-to-Digital [Markku Painomaa]
• ADSL - Asymmetric Digital Subscriber Line
• AES - Advanced Encryption Standard
• AH - Authentication Header
• AP - Access Point
• API = Application Programming Interface
• APNIC - Asia Pasific Network Information Centre
• ARIN - American Registry for Internet Numbers
• ARP - Address Resolution Protocol
• ARP - Autoradiopuhelin “car radio phone”
• ARQ - Automatic Repeat Request
• AS - Authentication System
• ASCII - American Standard Code for Information Interchange
• ASK - Amplitude shift keying
• ASN1 - Abstract Syntax Notation One
• ASS - Authentication Server System
• ATM - Asynchronous Transfer Mode
• BFSK - Binary Frequency shift keying
• BGP - Border Gateway Protocol
• BPSK - Binary Phase shift keying
• BSS - Basic Service Set
• BSSID - Basic Service Set Identifier
• B8ZS - bipolar with 8-zeros substitution
• CATV - Community Antenna Television
• CCITT - Comité Consultatif International de Télégraphique et Téléphonique
• CDMA - Code Division Multiple Access
• CMTS - Cable Modem Termination System
• CRC - Cyclic Redundancy Check
• CSD - Circuit Switched Data
• CSMA/CA - Carrier Sense Multiple Access With Collision Avoidance
• CSMA/CD - Carrier Sense Multiple Access with Collision Detection
• CST - Common Spanning Tree

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