Complete Protocol dictionary, glossary and reference

100BaseX or 100Base-X

100BaseX, including 100BaseFX and 100BaseTX, is a 100-Mbps baseband Fast Ethernet specification based on IEEE 802.3 standard using 4B/5B block encoding for Fast Ethernet over fiber-optic cabling (FX) and two pairs (TX).

Standard Organization

IEEE

Related Document

IEEE 802.3u