[comp.sys.sgi] modem lines

Dan Karron@UCBVAX.BERKELEY.EDU (12/09/90)

What type of line did you get ? 

Here in the states, I shopped hard to find the cheapest way I could
connect off premise offices to the nyu net. A conditioned analog line was
too much money, and I live only a block away from the campus. A digital
line was astronomical in cost, even for low baud rates. i

The cheapest solution I found was called in Bell/ATT jargon a LADC
circuit (Local Area Data Circuit). They are unconditioned copoper wires.

I could rent a copper wire from the telephone central office for 12.50
dollars (American) per month per end. So for 8 ends ( full duplex, end
to end : originate Transmit/Receive pair and a terminate Transmit/Receive pair)
the cost is affordable. The caveat is you are at the mercy of the phone
co as to routing and mileage. They also don't promise the AWG of the
wire. You may have 22 awg in your premise, but 28 awg in the 500 pair
bundles under the street.

I have ordered dozens of local loops in this way, and have had good luck whith
what I get. The key is the location of your central office. This service is
available only within the local wiring plant of your co.

I had run 64K sync line drivers accross the street with no problems. The
measured resistance indicates that there were 3,000 feet of 24 AWG copper
in the loop to go 500 feet. With newer modems, you should be able to
go farther.

I have not yet run a private line into my apartment, but it is an idea
in the back of my mind for when my wife won't let me out to go to the
lab late at night.

>From loki@frodo.Physics.McGill.CA  Sat Dec  8 12:48:35 1990
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>Date: Sat, 8 Dec 90 12:44:15 EST
>From: Loki Jorgenson Rm421 <loki@Physics.McGill.CA>
>Message-Id: <9012081744.AA10895@frodo.Physics.McGill.CA>
>To: karron@nyu.edu
>Subject: modem lines
>
>
>	I like your comments about net access. Very forward thinking.
>I myself just paid for my own 19200 baud data line to the department
>and when I finally get my whatever (lets say, a 4D/35 loaded), I will
>be running SLIP.  Of course, I'm academia too.  But you are quite right 
>in saying that net access it too limited.
>
>Regards,
>                             __          __
>Loki Jorgenson	            / /          \ \  node:  loki@physics.mcgill.ca
>Grad, Systems Manager      / //////  \\\\\\ \ BITNET: PY29@MCGILLA
>Physics, McGill University \ \\\\\\  ////// / fax:   (514) 398-3733
>Montreal Quebec CANADA	    \_\          /_/  phone: (514) 398-6531
>
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