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Path: utzoo!linus!decvax!genrad!mit-eddie!godot!harvard!seismo!ut-sally!oakhill!mot!fred
From: fred@mot.UUCP (Fred Christiansen)
Newsgroups: net.lan
Subject: Ethernet Transceivers
Message-ID: <21@mot.UUCP>
Date: Mon, 29-Oct-84 13:42:54 EST
Article-I.D.: mot.21
Posted: Mon Oct 29 13:42:54 1984
Date-Received: Fri, 2-Nov-84 04:40:27 EST
Organization: Motorola Microsystems, Phoenix AZ
Lines: 14

[ what is this line for? ]
	This site is a fairly recent addition to Usenet news, and this is
my first posting.  Kindly forgive me if this has been discussed in the past.
     We just "discovered" that there are TWO styles of Ethernet Transceivers,
and that depending on the "type" of Ethernet being used, you must use one or
the other type of Transceiver.
     There is "Ethernet 1" and "Ethernet 2" (Ethernet 2 is "compatible" with the
802.3 standard, Ethernet 1 is not).
     The LAN software we just received is Ethernet 2, and must use the latter
type of transceivers.  The correct ones from TCL have model numbers which are
suffixed with "I" or "IS".  Previously we (and our vendor) have been using
ones with a "E" or "EB" suffix.  For the new LAN software release, the "E" and
"EB" ones are WRONG!
	How well known is this problem?  Anything else we need to be aware of?