| Abbreviation | Definition |
|---|---|
| CASP | Cross Application Signaling Protocol |
| CAT6 | Category 6 |
| CAT7 | Category 7 |
| CATN | Coupled Augmented Transition Network |
| CAX | Computer Aided eXchange |
| CBAC | Context Based Access Control (Feature of the Cisco IOS?? Firewall) |
| CBAC | Context Based Access Control (Feature of the Cisco IOS® Firewall) |
| CBCB | Cardboard Cowboy |
| CBIX | Commercial Brno Internet Exchange |
| CBL | Composite Blocking List |
| CBLS | Complete Backup Link Service |
| CBNE | Cannabis Business Networking Event |
| CBO | Clean Before Operating |
| CBO | Continuous Bitstream Oriented |
| CBQ | Class Based Queuing |
| CBS | Constant Bandwidth Server |
| CBT | Core-Based Tree |
| CBUI | Coalition Of Broadband Users And Innovators |
| CBWFQ | Class Based Weighted Fair Queueing |
| CC | Carbon Copy |