Newsgroups: comp.sys.amiga.datacomm
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!elroy.jpl.nasa.gov!decwrl!netcomsv!gandrews
From: gandrews@netcom.COM (Greg Andrews)
Subject: Why full duplex 9600 modulations (was Re: 9600 for $169!!!)
Message-ID: <1991Jun12.064722.10129@netcom.COM>
Summary: A few reasons...
Organization: Netcom - Online Communication Services  UNIX System {408 241-9760 guest} 
References: <29138@know.pws.bull.com> <9149@ucdavis.ucdavis.edu> <9154@ucdavis.ucdavis.edu>
Date: Wed, 12 Jun 1991 06:47:22 GMT

In article <9154@ucdavis.ucdavis.edu> s142075@fred.ucdavis.edu (Brewski Rogers) writes:
>
>full-duplex 9600 bps is just about the dumbest thing I ever heard of.
>Anyone who NEEDS to send AND receive at full speed (as opposed to
>1 9600 bps and 1 450 bps channel) please respond. I'd be glad to hear
>what all that extra technology is being used for.
>

Gladly.

  Error control protocols:

    o  Windowed file transfer protocols such as UUCP-G, Compuserve B+,
       Kermit (windowing extension), and others that don't see a lot of
       use by folks who only call BBS systems (windowed forms of XMODEM,
       SEAlink, etc.).

    o  Communications protocols used in almost every remote-control program
       for micro computers like the IBM PC and Macintosh, such as Timbuktu
       Remote, Carbon Copy, PC Anywhere, etc.

  Network protocols:

    o  Network protocols such as SLIP, Asynchronous DEC-Net, AppleTalk,
       Banyan, Multitudes of PC network asynchronous bridge protocols,
       etc.  (this includes where an NFS drive is remotely mounted via
       a modem link - horribly slow, but some people do it)

    o  X-Windows and similar graphics terminal protocols.


If HST were sufficient, then why would USR spend time building V.32 and
V.32bis full duplex modems?  Reason: There's more to life than downloading
GIF pictures from your local BBS.


-- 
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 |  Greg Andrews   |       UUCP: {apple,amdahl,claris}!netcom!gandrews    |
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