Fiber Distributed Data Interface
- An optical-fiber token-ring network (defined by four ANSI standards) with highly reliable data transfer, active link monitoring, station management, large-bandwidth capabilities (100 Mbps transmission rate), and survivability features.
- Note 1: The four standards are: ANSI X3T9. 5 (Physical Media Dependent [PMD] specifications), ANSI X3T9. 5 (addressing the PHY [physical] specifications), ANSI X3. 139 (addressing the Media Access Control [MAC] parameters), and ANSI X3T9. 5 (addressing Station Management [SMT] parameters).
- Note 2: FDDI-2, a second-generation FDDI network is under development.