| Acronym | Meaning |
| WATS | Wide Area Telecommunications System |
| AC | Alternating Current |
| NSFNET | National Science Foundation Network |
| RJ-11 | Registered Jack-11 |
| CISC | Complex Instruction-Set Computing |
| PDF | Portable Document Format |
| ODI | Open Data-link Interface |
| DNS | Domain Name Service (System) |
| ROFL | Rolling On Floor, Laughing |
| ADPCM | Adaptive Differential Pulse Code Modulation |