Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!sdd.hp.com!ucsd!ucbvax!VTVM1.CC.VT.EDU!MATHAIM
From: MATHAIM@VTVM1.CC.VT.EDU (Mathew Mathai)
Newsgroups: comp.dcom.modems
Subject: (none)
Message-ID: <9010110703.AA13454@ucbvax.Berkeley.EDU>
Date: 10 Oct 90 19:52:40 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 46

We at Virginia Tech currently have an inbound modem pool that is
connected to an IBM/ROLM 9751 CBX that provides access to our systems to
off campus users. This service is currently being offered free of charge.
A simplified view of one such modem in the pool would look like this ...


                 ---------------
                | IBM/ROLM 9751 |
                |  ___________  |     _______________
     PSTN >------- Voice (ATI) -------|              |
                |  -----------  |     |              |
DATA            |  ____________ |     | INPOOL MODEM |
RESOURCES <------- Data (RMDCM) ------|              |
                |  ------------ |     |______________|
                |      CBX      |
                |_______________|

The inpool modem interfaces to the CBX on the voice side via an Analog
Telephone Interface (ATI) and to the data side via direct RS-232C cabling
to a Rack Mount Data Communications Module (RMDCM).

Users dial a PILOT number to access the group of DID numbers tied to
the modem pool.  (Each inpool modem has a DID number assigned to it, to
facilitate off-net testing of the individual modem). Once connected to the
modem, the user can place a data call across the CBX network to reach
a particular resource.

In order to keep up with upgrade/maintenance costs incurred on the modem
pool equipment, I have been asked to investigate different options that
would allow us to implement means to charge users for this service.

I would greatly appreciate ideas/suggestions/pointers that would generate
options that I could look at. I'm interested in hardware/software,
manufacturers, vendors, implementations, experiences... whatever !

I AM NOT A SUBSCRIBER ON THIS LIST SO PLEASE ADDRESS ALL REPLIES DIRECTLY
TO ME. Once I have looked into the different options, I will post a summary
to this list.

-Mathew
========================================================================
Mathew Mathai                      | Internet : mathaim@vtvm1.cc.vt.edu
Communications Resources           | Bitnet   : mathaim@vtvm1.bitnet
Virginia Tech                      | Phone    : (703) 231 - 4319
Blacksburg, VA 24061-0506          |
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