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From: JSOL@BUCS20.BUNET (Jon Solomon)
Newsgroups: mod.telecom
Subject: Network Interface
Message-ID: <8602270705.AA01443@ucbvax.berkeley.edu>
Date: Tue, 25-Feb-86 15:02:00 EST
Article-I.D.: ucbvax.8602270705.AA01443
Posted: Tue Feb 25 15:02:00 1986
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A Network Interface is a box which has a jack on it just like a
regular wall jack, but it also has a peice of electronics (Don't ask
me what it does, I don't know offhand, but I heard a while ago that it
simulated a telephone on the line for test purposes) within, which
accounts for why it looks larger than a regular phone jack.

Network Interfaces aren't meant to be used as jacks (although I use
mine for that purpose), you are expected to plug a wire adaptor into
them and wire your house from that, using standard jacks where you
would like them.

Hope that helps.
--JSol