What is 100VG-AnyLAN?

100VG-AnyLAN. The VG stands for "Voice Grade" in recognition of the fact that it transmits at 100 Mbps over voice grade twisted-pair cable (Category 3).* Supports cable segments of only 100m. Uses a new media access control method called demand priority rather than the older CSMA/CD. IEEE standard 802.12.

*100VG-AnyLAN can transmit on Category 3 cable because it uses all 4-wire pairs (quartet signaling). 10baseT uses only 2 of the wire pairs in Category 3 UTP.