| Abbreviation | Definition |
|---|---|
| DMB | Digital Multimedia Broadcasting |
| DMB | Disconnect and Make Busy |
| DMF | Distributed Messaging Fabric |
| DMI | Digital Multiplex Interface |
| DMNG | Digital Mobile News Gathering |
| DMP | Decode Media Protocol |
| DMPB | Digital Multi-Point Bridging |
| DMS | Distribution Management System |
| DMT | Discrete Multi-Tone |
| DMX | De-MultipleXer |
| DN | Directory Number |
| DNA | Daytime, Night-time, Anytime |
| DNA | Do Not Answer |
| D-NBAP | Dedicated Node B Application Part |
| DNC | Do Not Call |
| DNI | Data Network Interface |
| DNI | Did Not Include |
| DNIC | Data Network Identification Code |
| DNIS | Dialed Number Identification Service |
| DNMS | Dual Network Media Server |