| Acronym | Meaning |
| MNG | Multiple-image Network Graphics |
| GPS | Global Positioning Satellite (System) |
| TDMA | Time Division Multiple Access |
| IAD | Integrated Access Device |
| PRI | Primary-Rate Interface |
| DCC | Direct Cable Connection |
| MPEG | Motion Picture Experts Group |
| VOIP | Voice Over Internet Protocol |
| MTBF | Mean Time Between Failure |
| CERT | The CERT Coordination Center |