| Abbreviation | Definition |
|---|---|
| AUTO-MDIX | Automatic Medium Dependent Interface Crossover |
| AUTOS | Atms Universal Traffic Operation Simulation |
| AV | Address Verification |
| AVS | Audio and Video Streaming |
| AVVID | Architecture for Voice, Video, and Integrated Data |
| AWCP | Austin Wireless City Project |
| AWDL | Airline Wireless Data Link |
| AWE | Axiom Wireless Ethernet |
| AWG | Arbitrary Wave Guide |
| AWGN | Additive White Gaussian Noise |
| AWOS | ALE Wireless Operating System |
| AXFR | Authoritative Transfer |
| AXN | Admin X Network |
| AXT | Alien Cross-Talk |
| B | Backbone |
| B8ZS | Bipolar 8 Zero Substitution |
| B8ZS | Bi-polar with 8-Zero Substitution |
| BA | Broadcast Architecture |
| BACP | Bandwidth Allocation Control Protocol |
| BAMBI | Bay Area Macroinvertebrate Bioassessment Information (Network) |