Re: datacomm questions - two buildings

And a special modem to go between locations.

John Lee
Vaske Computer Solutions



At 09:01 AM 3/22/07 +0000, Robert Mills wrote:
Dave,

If you MUST retain your serial connections then you are going to have to
purchase a DTC.

regards,

Robert W.Mills
Systems Development Manager
Pinnacle Arvato
(020) 8309 3604


-----Original Message-----
From: HP-3000 Systems Discussion [mailto:HP3000-L@xxxxxxxxxxxxx] On
Behalf Of Jeff Kell
Sent: 21 March 2007 17:47
To: HP3000-L@xxxxxxxxxxxxx
Subject: Re: [HP3000-L] datacomm questions - two buildings

Dave Powell, MMfab wrote:
> So the first question is how much extra $ to allow for datacomm. We
> don't really need to know HOW to make thinks work yet, just approx how

> much two-building communications will cost (both phone system and
> computers), so management will know how big the rent savings need to
> be. My experience has all been within one building, so I am pretty
clueless here.

First you need connectivity, obviously. Are these buildings far enough
apart that you are going to contract with a utility for the runs (T1,
Fiber, Metro Ethernet, etc?) or is this on your own ground where you can
run your own links?

> Just for reference:
> Phone system has a T1 and a bunch of plain-old lines. The warehouse
> might have about 10 extensions.
> Our computer datacomm is just one cheapo dsl line.
> Approx 40+ total computer users, mixed serial dumb terminals and
> network PCs

Maintaining your serial connectivity is going to be a pain. I would try
to bury that dead horse now, or at least try to keep all the serial
needs in one place. If you need serial "remotely" it will be a problem.

We have done this a few times for temporary office buildings, and you
can get away with most needs with a T1 and a couple of AdTran muxes.
Run your phones off half the T1 (if your PBX does digital), data off the
other half (or split accordingly).

> We do cross-network tape backups, which we would like to keep but
> could work around.

To keep that up and cross buildings, you'll need a lot of patience or a
lot more bandwidth :-)

Other than that, you're not looking at much recurring expense other than
the link, but you will have some up-front infrastructure costs.

Jeff

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