Integrated Services Digital Network
- Standardized operating parameters and interfaces for a network that will allow mixed digital transmission services (audio, video, and data) simultaneously. (AF9K_JBC. TXT) (ISDN) An integrated digital network in which the same time-division switches and digital transmission paths are used to establish connections for different services. Note 1: Such services include telephone, data, electronic mail, and facsimile. Note 2: How a connection is accomplished is often specified. For example, switched connection, nonswitched connection, exchange connection, ISDN connection. See also communications, electronic mail, integrated digital network.