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From: malis@CCS.BBN.COM (Andrew Malis)
Newsgroups: mod.protocols.tcp-ip
Subject: Re: Arpanet outage
Message-ID: <8612170441.AA07592@ucbvax.Berkeley.EDU>
Date: Tue, 16-Dec-86 12:16:23 EST
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Posted: Tue Dec 16 12:16:23 1986
Date-Received: Wed, 17-Dec-86 23:14:26 EST
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Approved: tcp-ip@sri-nic.arpa

Dan,

One additional point - I believe most (if not all) of the
affected trunks have been in service since before AT&T started
using fiber optics.  AT&T has obviously been rerouting their
existing circuits as cheaper transmission paths become available.
For some of the older ARPANET/MILNET trunks, I'm sure they've
seen the complete transition from wires to microwave to fiber
(and who knows what else).

Andy