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- Newsgroups: comp.sys.amiga.datacomm
- Path: sparky!uunet!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!news.cs.indiana.edu!sgberg@peach.ucs.indiana.edu
- From: "Stefan Berg" <sgberg@peach.ucs.indiana.edu>
- Subject: Re: HST & SUpra: which is faster?
- Message-ID: <1992Sep2.152131.7722@news.cs.indiana.edu>
- Organization: Computer Science, Indiana University
- References: <kehlet.06hg@kehlet.adsp.sub.org> <36908@uflorida.cis.ufl.edu>
- Date: Wed, 2 Sep 1992 15:21:19 -0500
- Lines: 56
-
- jma@reef.cis.ufl.edu (John 'Vlad' Adams) writes:
-
- >Did kehlet@kehlet.adsp.sub.org really type:
- >>
- >> The HST standard uses a backtalk channel at only 450 bps, when
- >> Supra/TwinCom etc. uses a full-blown backtalk on 14,400 bps, so consider
- >> HST the slowest...
-
- >I'm afraid I don't follow your logic. When using an HST verses a V.32bis
- >modem on an Amiga with Zmodem, the HST yields a faster transfer rate *all*
- >the time on the order of 100 to 250 CPS better. And when using a new
- >16.8k HST, one sees over 2000 CPS to the V.32bis 1600 to 1650 CPS. And
- >as far as transferring mail with my NEC, since my outgoing packet is
- >on the order of 50k to the incoming 800k, well, I think you can figure
- >out the math that the HST is faster in unidirectional transfer than would
- >be an (currently non-existent) Amiga bi-directional mailer protocol that
- >talks to FrontDoor, D'Bridge, or BinkleyTerm.
-
- I`m afraid I don`t follow your logic, either. I don`t know anything about
- HST, but if it is true, that the HST has one channel going at approx. 2000cps
- and the other at 450cps, then it really depends on the individual needs,
- before you can say anything about which is better or not.
-
- If all you do is call BBS`s and do things like downloading programs (and only
- an occasional upload), then you will certainly have a speed advantage with
- the HST modem. I`m running a usenet node and have quite some junk going
- through my node (in *and* out). If one direction is 300cps faster or not is
- no big deal for me. Having one direction going 1200cps slower is a major
- problems (especially since you pay a lot more for a HST modem).
-
- Now I`m really curious (after having talked so much). What are the *real*
- rating of HST? It can go 16.8k out and how much in? Can you run a HST with
- V.42/V.42bis, to get the additional compression advantage? Or does it have
- its own compression protocol (which hopefully is equally good)? The
- original message mentioned 450cps, which makes me guess, that the inbound
- rating of the HST is only 4800 bps. Makes me think about the 1200/75bps
- modems, which were in use in Germany back when I was a "little" kid... :)
-
- Stefan
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- --
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- | Usenet sgberg@charon.bloomington.in.us Stefan G. Berg |
- | Internet sgberg@ucs.indiana.edu GE Mail: s.berg5 |
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