Complete Protocol dictionary, glossary and reference
CDDI: Copper Distributed Data Interface
Copper Distributed Data Interface (CDDI), a version of FDDI using twisted pair cables, provides data rates of 100 Mbps and uses dual-ring architecture to provide redundancy. CDDI supports distances of about 100 meters from desktop to concentrator. The CDDI standard is officially named as the Twisted-Pair Physical Medium-Dependent (TP-PMD) standard. It is also referred to as the Twisted-Pair Distributed Data Interface (TP-DDI).