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- Path: sparky!uunet!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!rutgers!cbmvax!cbmehq!cbmden!kehlet!kehlet
- From: kehlet@kehlet.adsp.sub.org (Jesper Kehlet)
- Newsgroups: comp.sys.amiga.datacomm
- Subject: Re: HST & SUpra: which is faster?
- Message-ID: <kehlet.06ks@kehlet.adsp.sub.org>
- Date: 26 Aug 92 16:56:23 GMT
- References: <kehlet.06hg@kehlet.adsp.sub.org> <1992Aug25.174145.13257@corax.udac.uu.se>
- Organization: Compos Mentis Software Systems
- Lines: 48
- X-NewsSoftware: GRn 1.16e (7/4/92) by Mike Schwartz & Michael B. Smith
-
- In article <1992Aug25.174145.13257@corax.udac.uu.se> tommyi@Minsk.DoCS.UU.SE (Tommy The King) writes:
-
- > > 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...
- > >
- >
- > ...ehh...are all of you just stupid or what? the latest hsts run in 16800
- > baud and v.32bis runs in 14400 baud.. end of discussion...
-
- Sorry, you're the stupid one... it's bps, not baud, and 16800 still gives
- a slow backtalk channel thought it's now at 600 bps or so.
-
- So, take this: V32bis gives you transfer speed in both directions
- simultaneously and 14,400 bps, while the 16.8 HST only gives you
- (16,800+600)/2 = 8700 in FULL duplex terminology.
-
- When the bidirectional protocols gain even more space, TrapDoor should be
- doing Janus in 1.82, we get ~1600 cps in both directions, which will give
- ~3200 cps on those transfers.
-
- With 16.8 HST, you're really going fast here: ~1800 cps in one direction,
- but the other direction only goes ~60 bps, so where's the gain? We'll go
- ~3200 and you'll go ~18600. GREAT!
-
- Besides: be my guest, buy a 16.8DS -- it has V32bis, so we'll connect
- 14,400 full duplex to it, but to other USR Courier modems, you'll get HST
- yourself... YIKES!
-
- So, stupid, get it: HST is the past! Even USR is going for V.fast 28,800
- and letting HST die now!!!
-
-
- > _______ __ ______ _______
- > \ ___ \ \_|\ __ \\ /\ /\\ ___ \ /\ !! 1.2 Gig Amiga !!
- > \/| |\ \| ||\/_/ // \ \ / \\/| |\ \/ \
- > | | \ \ || / \_/ // /\ \ | | \ \/\ \ +46-(0)18-463380 HST/V.32
- > \ | / / |\ |\ \\ // /__\ \\ | / /__\ \ +46-(0)18-463383 HST
- > \|/ / \| \|/ / \_//_____\\_\\|/ /___\\_\ +46-(0)18-463381 2400
- > \/ \/ \/
-
- --
- Jesper Kehlet, Compos Mentis Software Systems -- A Kind Of Magic
-
- (uunet|pyramid|rutgers)!cbmvax!cbmehq!cbmden!kehlet!kehlet
- cbmehq!cbmden!kehlet!kehlet@cbmvax.commodore.com
-
- As long as I speak for myself, my employees can do that, too...
-