Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!rutgers!cmcl2!nrl-cmf!think!gem.mps.ohio-state.edu!brutus.cs.uiuc.edu!psuvax1!wuarchive!texbell!vector!telecom-gateway From: bryan@terminator.cc.umich.edu (Bryan Beecher) Newsgroups: comp.dcom.telecom Subject: ISDN Service in Ann Arbor Area Message-ID: Date: 14 Nov 89 20:41:13 GMT Sender: news@vector.Dallas.TX.US Reply-To: bryan@terminator.cc.umich.edu Organization: U of Michigan, Computing Center Lines: 62 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 513, message 1 of 5 ISDN service is in Ann Arbor. Service is provided by a 5ESS. I believe that much of Ann Arbor is serviced by the one CO, although some Ann Arbor mailing addresses (like me in Glenoce Hills at US-23 and Washtenaw) go through a different office. I worked at a display at EDUCOM with Dory Leifer of the MERIT network. Dory had written a device driver for the Teleos B100PC ISDN cards. We had two sets of two PCs at the Track and Tennis Building display area. Each PC has a ISDN card and was running KA9Q or FTP Software software. ISDN lines ran from them to the MBT Office in downtown Ann Arbor. ISDN lines ran from there to the School of Ed Building where we had two gateway machines, one for each pair of machines at Track and Tennis. These machines had both ISDN and Ethernet cards, and collected packets off of the Ethernet there that were destined for themself or the machines at Track and Tennis. The upshot off all this is that the machines at Track and Tennis looked as if they were on an Ethernet attached to the Internet. The cards had a Basic Rate Interface so we had two 64K channels are our disposal -- I've heard that MBT is going to hook up people to ISDN on a test basis in early 1990. I believe you must be within 10,000 feet of the MBT office. I've also heard that the cost would be something like the cost of two phone lines, so if you already had two lines -- one for voice and one for your modem -- this wouldn't be too bad at all considering you'd be moving from 2400 baud service to 64,000K (or 128,000K) service. You ought to contact Michigan Bell for more info: this is just rumor that I've heard. I think both Dory and I are hoping to do more with ISDN if we can get Michigan Bell and U-M together for some interesting projects. Several of the MBT employees have MTS accounts, and they do read mail there. One person we worked with is Peter Lodwick. If you want more information on the Internet/ISDN Gateway Project, you can mail me or Dory. Dory is Dory_leifer@um.cc.umich.edu. You could also call me (313-747-4050) or him (313-763-4896). For ISDN details, Dory is probably the better person to talk to. I was more of the Internet-half of the Internet/ISDN gateway! ;-) One more thing to add. I showed my posting to Dory who had this to say: Date: Wed, 15 Nov 89 10:06:42 EST From: Dory_Leifer@um.cc.umich.edu To: bryan@terminator.cc.umich.edu Subject: FYI Bryan, One thing to add. There is no general ISDN tariff offered by MBT yet. If they are a centrex user (probably large) they may be able to negotiate. UM pays $1000+/month for the first ISDN. This is probably not too reasonable for a small business. - Dory Bryan Beecher, University of Michigan Computing Center (+1 313 747 4050) Domain: bryan@terminator.cc.umich.edu Path: mailrus!terminator!bryan