Source : Free On-Line Dictionary of Computing
100BaseVG
A 100 {MBps} {Ethernet} standard specified to run
over four pairs of {category 3} {UTP} wires (known as voice
grade, hence the "VG"). It is also called 100VG-AnyLAN
because it was defined to carry both {Ethernet} and {token
ring} {frame} types.
100BaseVG was originally proposed by {Hewlett-Packard},
ratified by the {ISO} in 1995 and practically extinct by 1998.
100BaseVG started in the IEEE 802.3u committee as {Fast
Ethernet}. One faction wanted to keep {CSMA/CD} in order to
keep it pure Ethernet, even though the {collision domain}
problem limited the distances to one tenth that of {10baseT}.
Another faction wanted to change to a polling architecture
from the hub (they called it "demand priority") in order to
maintain the 10baseT distances, and also to make it a
{deterministic} {protocol}. The CSMA/CD crowd said, "This is
802.3 -- the Ethernet committee. If you guys want to make a
different protocol, form your own committee". The IEEE 802.12
committee was thus formed and standardized 100BaseVG. The
rest is history.
(1998-06-30)