| Acronym | Meaning |
| NSC | Network Systems Corporation |
| ABRES | Advanced Ballistic Re-entry System |
| DCF | Data Capture Facility |
| ISDN | Integrated Services Digital Network |
| GHRS | Goddard High Resolution Spectograph |
| DDB | Delayed Direct Broadcast |
| PUP | Principle User Position Workstation |
| PEM | Pacific Exploratory Mission |
| BITNET | Because It's Time Network |
| IGY | International Geophysical Year |