| ACRONYMS / WORDS | MEANING |
| ADMD | Administrative Management Domain |
| AECI | Agencia Española para la Cooperación Internacional (Spanish Agency for International co-operation) |
| All-In-One-ID | All-In-One, Digital's tool for office automation. |
| DEC | Digital Equipment Company |
| DPA | Data Protection Act (Great Britain) |
| DSA | Directory Service Agent |
| EDI | Electronic Data Interchange |
| EU | European Union |
| EUNet | European Net (Internet) |
| FAC | Fichero de Altos Cargos (Spanish Administrations Directory) |
| FDDI | Fiber Distributed Data Interface |
| HMSO | British Government Stationery Office |
| Iberpac | Spanish Package Switching Net |
| IBIT | Instituto Balear de Innovación Telemática (Balearic Institute for Telematic Innovation ) |
| Infonet | Value Added Network |
| IRIS Net | Network of Spanish Researching Centres |
| ISDN | Integrated Service Digital Network |
| ISTMO | Spanish Administration Project for e-mail promotion |
| ITU-U | International Telecommunication Union - Telecommunication |
| KB / Kbps | 10 3 Bytes / 10 3 bits per second |
| LAN | Local Area Network |
| LORTAD | Spanish Data Protection Law |
| MB / Mbps | 10 6 Bytes / 10 6 bits per second |
| MTA | Message Transfer Agent |
| NATO | North Atlantic Treaty Organization |
| O-R | Origin-Recipient |
| PIN | Personal Identification Number |
| PRMD | Private Management Domain |
| PSTN | Public Switching Telephone Network |
| RFC-822 | Internet standard for naming SMTP mail domains |
| RUA | Remote User Agent |
| SMTP | Simple Mail Transfer Protocol, Internet e-mail protocol |
| SNA | IBM networking structure |
| SPX/IPX | Novell network protocol |
| SQL | Structured Query Language |
| SW | Software |
| TCP/IP | Transfer Control Protocol / Internet Protocol |
| UA | User Agent |
| UK | United Kingdom |
| WWW | World Wide Web |
| X.25 | Package Switched Network Access Protocol (ITU-T) |
| X.400 | E-mail Protocol (ITU-T) |
| X.500 | Electronic Directory Protocol (ITU-T) |