| Abbreviation | Definition |
|---|---|
| dBRNC | deciBel Relative to Noise in a Circuit |
| DBS | Direct Broadcast Satellite |
| DC | Device Control |
| DC | Dis-Connected |
| DC | Dry Circuit |
| DCA | Dynamic Channel Assignment |
| DCAS | Downloadable Conditional Access System |
| DCAT | DSL (Digital Subscriber Line) Customer Advocacy Team |
| DCB | Digital Channel Bank |
| DCC | Data Communications Channel |
| DCCX | Direct Circuit Control Exchange |
| DCD | Data Carrier Detect |
| DCE | Data Circuit-terminating Equipment |
| DCF | Distributed Coordination Function |
| DCF | Downlink Center Frequency |
| DCH | Discrete CHannel |
| DCID | Downstream Channel ID |
| DCN | Data Communications Network |
| DCPNZ | Daily transmission Charge for Peak Non-Zone network load |
| DCPV | Daily Customer Pool Volume |