| Abbreviation | Definition |
|---|---|
| B3ZS | Bipolar 3 Zero Substitution |
| B6ZS | Bipolar 6 Zero Substitution |
| BAC | Bar Calls |
| BAF | Bellcore AMA (Automatic Message Accounting) Format |
| BAN | Billing Account Number |
| BAN | Building Area Network |
| BANC | Broadband Access Network Coordination |
| BAOC | Barring of All Outgoing Calls supplementary service |
| BASH-R | BAndwidth SHaring with Resource constraints |
| BATM | Basic Telecommunication Access Method |
| BB | Baseband |
| BB | BlackBerry |
| BBCR | BroadBand Communications Research |
| BBM | BlackBerry Messenger |
| BBTS | Broad Band Telecom Services |
| BBU | Baseband Unit |
| BC | Burst Copy |
| BC | Committed Burst size |
| BCCH | Broadcast Control Channel |
| BCIX | Berlin Commercial Internet eXchange |