old modems & a packet switcher

From: Allison J Parent <allisonp_at_world.std.com>
Date: Mon Aug 3 14:35:26 1998

< No, I was thinking about differences in ground potential between the
< two buildings, static electricity, lightning strikes, that sort of
< thing. All the canonical reasons why you wouldn't want to pull
< Ethernet coax through that conduit.

Use thick eithernet wire as its coax and uses ground and everything uses
an isolated interface to it. AUI is imune to ground loops and can be
burried.

The other approach is RS422/485 type interconnect as it is differntial.

Myself I'd sink several peices of weather proof coax and build on that
using AUI (thick eithenet).

If you have a choice go underground as air trips invice lightining.

Allison
Received on Mon Aug 03 1998 - 14:35:26 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:30:43 BST