Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!haven!mimsy!mojo!russotto From: russotto@eng.umd.edu (Matthew T. Russotto) Newsgroups: comp.sys.apple2 Subject: Re: Applied Engineering Message-ID: <1990Nov18.062257.7568@eng.umd.edu> Date: 18 Nov 90 06:22:57 GMT References: <9011172133.AA13179@apple.com> Sender: news@eng.umd.edu (The News System) Organization: College of Engineering, Maryversity of Uniland, College Park Lines: 36 In article <9011172133.AA13179@apple.com> $CSD211@LSUVM.BITNET (Mark Orr) writes: > >I agree. But there is a problem: Which 9600 baud modem? Last time I checked >there was no concrete standard for 9600 baud. There is USRobotics Courier >HST (which has a following) and Telebit's Trailblazer PEP standard (which >also has a following) as well as various flavors of V.32 and V.42 protocols. V.32 is the accepted modulation standard. Any V.32 modem can at least connect and communicate with any other V.32 modem. V.42 and V.42bis are now the error correction and compression standards. Any V.32 modem that is V.42/V.42 bis compliant can work with both data compression and error correction with any other V.32 modem, whether it uses MNP or V.42. (V.42 complience---> MNP compatible, bot not the other way around) >There might be a reason to get an AE modem...If you get the Datalink Express >with MNP-5 compression (which gives the modem the effective throughput of >a 9600 baud modem - actually better since line noise is less of a factor) Actually, MNP-5 doesn't claim to be that good (MNP-9 does). V.42bis does. >Prices for the AE modem with MNP-5 are competitive with other 2400 baud >MNP-5 modems. Of course, having the capability means nothing unless other >users also have that capability, so the popularity of the modem or standard >means a great deal. But from what I've heard, 2400's with MNP-5 compression >are pretty commonplace in the PC world. All the same, I wouldn't mind one >of those USRobotics HST Dual standards...but the price of 9600 baud modem's >is still high. As much as I like my old 1200 baud Apple Cat, with all it's >special capabilities, I see that having a 2400 baud modem, that at least >runs some form of V.22bis (which all of them do) is a must. Yeah, the HST DS is a great modem, but at $805 or so, it is still one of the most expensive out there. I think you can now get V.32 modems between $500 and $600. Also, any 2400 MNP5 modem will be able to use the MNP5 with 9600 baud MNP 5 modems at the other end. -- Matthew T. Russotto russotto@eng.umd.edu russotto@wam.umd.edu .sig under construction, like the rest of this campus.