| Acronym | Meaning |
| DSLAM | Digital Subscriber Line Access Multiplexer (Module) |
| PJTF | Portable Job Ticket Format |
| PGM | Pragmatic General Multicast / Pretty Good Multicast |
| EDI | Electronic Data Interchange |
| PSTN | Public Switched Telephone Network |
| MDC | Metadata Coalition |
| RDF | Resource Description Framework |
| PDF | Portable Document Format |
| PPCP | PowerPC Platform |
| CD-I | Compact Disc-Interactive |