Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!caen!umich!sharkey!tygra!mich-ns!tech From: tech@mich-ns.Michigan.COM (Mich. Network Sys. TECH SUPPORT) Newsgroups: comp.dcom.modems Subject: Re: T1000 Message-ID: <37@mich-ns.Michigan.COM> Date: 2 May 91 06:13:12 GMT References: <1991Apr27.233044.22434@nstar.rn.com> <1991May01.021126.1382@nstar.rn.com> Organization: Michigan Network Systems, Detroit, MI Lines: 43 In article <1991May01.021126.1382@nstar.rn.com> larry@nstar.rn.com (Larry Snyder) writes: " "ahh - not v.32bis - no way. v.32bis will blow the socks of a "T1000 plus v.32bis is much better for interactive applications (like "running X over a slip connection). Try running a T1000 over a SLIP "connection - a 2400 baud modem will work just as good as the T1000. " Of course, but most V.32bis modems cost more than the T1000. As for SLIP, A V.32 with V.42/V.42bis works better. PSINet uses such beasties for their access and they seem to be happy with the outcome. "I don't know what you get with the T1000 doing uucp, but we are getting "around 1050 cps doing uucp for v.32, and around 1650 doing v.32bis --- " With or without V.42bis?? Also, is the data compressed already or not. PEP (19.2) will many times do better than V.32 with V.42bis because, although V.42bis can get you up to 4:1 compression (ie: 38,400), most news is already compressed. If you're gonna send stuff uncompressed, then V.32/V.42bis will usually outdo PEP. "Of course the T2000 runs around 1420 cps -- my understanding the T1000 will "do around 850 at best - in which case a v.32bis is a much better selection. " You mean the T2500, don't you? (The T2000 is no longer made. Its an SDLC modem). RE: Speeds: All depends on the phone line quality. Remember, PEP has the ability to dynamically upshift/downshift. So does V.32bis. "we are now feeding several sites via both v.32 and v.32bis without problems - "all of which are long distance... Maybe you are using poor quality v.32 "modems? With the US Robotics v.32bis modems - we haven't a problem... " There were some problems with echo-cancellation and V.32. Problem is the quality of your V.32 implimentation. -- Michigan Network Systems Technical Support Division 1-800-736-5984 BBS: +1 313 343 0800 E-MAIL: tech@mich-ns.Michigan.COM TELEBIT DIGIBOARD WESTERN DIGITAL 3COM SCO INTERACTIVE UNIX MICROPOLIS ADAPTEC