Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!zardoz.eng.ohio-state.edu!agvax2.ag.ohio-state.edu!GAYNOR From: gaynor@agvax2.ag.ohio-state.edu Newsgroups: comp.dcom.modems Subject: Intel 9600/EX and "vanilla" 1200s Message-ID: <1991Jun5.152101.6577@zardoz.eng.ohio-state.edu> Date: 5 Jun 91 15:21:01 GMT Sender: news@zardoz.eng.ohio-state.edu (Usenet news) Reply-To: gaynor@agvax2.ag.ohio-state.edu Organization: Ohio Cooperative Extension Service Lines: 45 Nntp-Posting-Host: agvax2.ag.ohio-state.edu Here's the situation: I run a VMS system with users in each of Ohio's 88 counties. These users dial in over 6 WATS lines. Most of the users are using older 1200 baud modems purchased in 85-87. Previously, on the WATS lines, we had a bank of rack-mounted Racal-Vadic VA212PAR modems (1200 baud). In order to accoomodate users that are starting to buy new modems (2400, some with MNP), and to generally improve things, we purchased some Intel 9600/EX modems, and put them on the WATS rotation. (leaving some of the old Racals in there, too.) The result? The 2400 baud users were happy, and the few with MNP are ecstatic. We were planning on helping a number of the users (which are actually remote offices of this organization) upgrade their modems to the Intels. BUT. We're having severe problems with users of the older 1200 baud modems. A number of them can't even connect to the new Intels. And many of those that do connect to the Intels (the Intels, obviously, ramp down to 1200 for those folks) are seeing a -huge- increase in line-noise related garbage, compared to a connection to the Racals. So much, in fact, as to render the connection virtually useless. Invesitigating, I'm beginning to hear various things. Problems with MNP modems connecting to non-MNP. Problems with the Rockwell chip set used by Intel. Problems specific to Intel modems. All of it anecdotal. A good portion of it with the feel of rumor. Does anyone have hard data on what may be causing this? And, more importantly, on what can be done to end it. We -have- to support the 1200 baud users (and the 2400, and 2400 MNP). But we also want to make 9600bps and the benfits of MNP and the CCIT standards available to our users. It doesn't have to be Intel, but I'll need a good reason to drop them. Thank you, in advance, for your comments and assistance. I will summarize to this newsgroup at a later time... --- Jim Gaynor - AgVAX System Manager - Academic Computing - Ohio State University VMS: UNIX: Disclaimer : All opinions expressed here are mine and only mine. So there! Witty Quote: "Think, think, think, think..." - Winnie-the-Pooh, Taoist Bear.