| Acronym | Meaning |
| ATA | AT Attachment |
| QSIG | Q (point Of The ISDN Model) Signaling |
| AES | Asynchronous Event Scheduler |
| DSLAM | Digital Subscriber Line Access Multiplexer (Module) |
| PCL | Printer Control Language |
| CCD | Charge-Coupled Device |
| GREP | Globally Search For The Regular Expression And Print |
| I/O | Input/Output |
| CIE | Color Model = Commission Internationale De L'Eclairage Color Model |
| CMIP | Common Management Information Protocol |