Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!eru!luth!sunic!mcsun!unido!sinix!cmk
From: cmk@sinix.UUCP (Christian Kaiser)
Newsgroups: comp.dcom.modems
Subject: HST modems (was: Re: Need HST setup for getty)
Message-ID: <596@athen.sinix.UUCP>
Date: 20 Sep 89 08:42:27 GMT
References: <141@nstar.UUCP> <540@fiver.UUCP>
Reply-To: cmk@sinix.UUCP (Christian Kaiser)
Organization: Siemens AG, K D ST SP4, Munich
Lines: 19

palowoda@fiver.UUCP (Bob Palowoda) writes in <540@fiver.UUCP>:
)From article <141@nstar.UUCP>, by larry@nstar.UUCP (Larry Snyder):
)> Hi Willy - I am running an HST (14.4 carrier) under SCO 2.3.2 using 
)
)  What in the world is a "14.4 carrier" ?    

 The newer Courier HST's can transfer data at 14.4 kbps - without fancy
MNP compression. Transmitting ASCII files with MNP compression turned on
you can get up to 2300 cps throughput (this is not from hearsay - I have
seen these numbers every day under real-world conditions). That's why
you can set the HST to 38.4 kBaud.
 But there's a drawback: You must have drivers and hardware that can
stand receiving data at 2500 cps and that can do real hardware handshake
(RTS/CTS), and finally a protocol that doesn't overflow the reverse channel
which runs at 450 bps. Zmodem, for example, will work fine.

		Christian
-- 
Christian Kaiser  cmk@chiuur.UUCP +49 89 4391852  cmk@sinix.UUCP +49 89 6362873