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Technology Stocks : MRV Communications (MRVC) opinions?
MRVC 9.975-0.1%Aug 15 5:00 PM EST
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To: Ken Ball who wrote (160)9/6/1996 9:06:00 AM
From: Ernie Zambon   of 42804
 
Ken,
Ethernet is a transmission media that was brought to market in 1980 by Digital, Intel
and Xerox. It can be coax , fiber optic, or twisted pair. It started out as a tappable
thickwire coax called 10base5 which stands for 10 Mbps, baseband=digital signal,
500 meter max length, with a maximum of 100 nodes attached. This is called thick wire
and a device was connected by using a vampire like tap to make connection to the
center conductor which is approx. a 12 gauge wire. Then came 10base2 called thin
wire which is a thin, stranded coax that is is spliced with t connectors and terminators.
Specs are 10 Mbps, segment length=185 meters, max connections=30. Then came
10base-T which is ran over standard phone wires. Ethernet is attractive because for
one all legacy DEC systems run on ethernet as well as all new DEC equip as well as
token ring networks can run on Ethernet which makes work well in the corporate nets.
Also, an ethernet NIC card in a pc will cost as much as $300 less then a token-ring
card.Token-ring is also limited to 16 Mbps whereas Enet is now pushing 1Gbps from
10Mbps,100Mbps. Ethernet has been around a long time and users are comfortable
with it and Gig Enet is a logical alternative to ATM for all of us who are considered
Ethernet bigots. Ha .
Hope this helps. EZ
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