| Acronym | Meaning |
| CRAM | Card RAM |
| MAN | Metropolitan Area Network |
| ACU | Automatic Calling Unit |
| DOS | Disk Operating System |
| DVD-RAM | Digital Versatile (Video) Disc - Random Access Memory |
| SSI | Server-Side Include |
| ISDN | Integrated Services Digital Network |
| HD | Hard Drive |
| VCSEL | Vertical-Cavity Surface-Emitting Laser |
| RAMDAC | Random Access Memory Digital-to-Analog Converter |