| Acronym | Meaning |
| PIC | Programmable Interrupt Controller |
| WDM | Wavelength Division Multiplexing |
| WWW | World-Wide Web |
| UIN | Universal Internet Number |
| POP | Post Office Protocol |
| IDE | Intelligent (Integrated) Drive Electronics |
| ASCII | American Standard Code For Information Interchange |
| RADSL | Rate-Adaptive Digital Subscriber Line |
| IAC | Internet Access Coalition |
| POSIX | Portable Operating System Interface For UNIX |