Path: utzoo!attcan!uunet!mcsun!sunic!uupsi!rpi!zaphod.mps.ohio-state.edu!mips!prls!pyramid!cbmvax!grr
From: grr@cbmvax.commodore.com (George Robbins)
Newsgroups: comp.dcom.modems
Subject: Re: Searching for inexpensive V.32 9600 bps modems (was cheap telebits)...
Message-ID: <10012@cbmvax.commodore.com>
Date: 6 Mar 90 06:26:06 GMT
References: <8398@potomac.ads.com> <1990Mar2.220228.2836@ux1.cso.uiuc.edu> <1990Mar3.164553.29588@virtech.uucp> <9977@cbmvax.commodore.com> <8612@xenna.Xylogics.COM>
Reply-To: grr@cbmvax (George Robbins)
Organization: Commodore, West Chester, PA
Lines: 31

In article <8612@xenna.Xylogics.COM> loverso@Xylogics.COM (John Robert LoVerso) writes:
> In article <1990Mar3.164553.29588@virtech.uucp> cpcahil@virtech.UUCP (Conor P. Cahill) writes:
> > The T2500 fits all of these requirements, but is too expensive.
> 
> The really expensive part is the bit-pump.  I.e., the T2500 (and newer-style
> TB+) have a considerable amount of computing power.  And this is why the
> T1000 can't do better than 9600bps; it just doesn't have the power!
> 
> In article <9977@cbmvax.commodore.com> grr@cbmvax (George Robbins) writes:
> > ...it would also help if Telebit would break down and support HST mode
> > as an alternative.
> 
> Why?  What would HST give them that PEP and/or V.32 already doesn't?

Simply because the HST is a very popular item in the BBS/PC world and having
HST compatibility in the trailblazer would increase the general utility of
the modem.  I'd expect it to do wonders for T1000 sales if it didn't add
to the cost.  It's also a better interactive mode than PEP, even with the
short packets - you've probably noticed this if you use rn or vi over your
Tailblazer.

Theoretically, it should be be easy.  Any modem that can do V.32 and has
programmable guts should be able to do 9600 QAM + back channel without
even straining.  Of couse there may be practical problems, the T2500's I
have do V.32 by virtual of a Rockwell chipset piggyback board instead of
using the DSP chip as originally expected... 

-- 
George Robbins - now working for,     uucp:   {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing:   domain: grr@cbmvax.commodore.com
Commodore, Engineering Department     phone:  215-431-9349 (only by moonlite)