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From: lstowell@pyrnova.pyramid.com (Lon Stowell)
Newsgroups: comp.dcom.modems
Subject: Re: Hayes announces Ultra 144 and V.32bis upgrade
Message-ID: <160779@pyramid.pyramid.com>
Date: 27 Jun 91 19:35:38 GMT
Sender: daemon@pyramid.pyramid.com
Reply-To: lstowell@pyrnova.pyramid.com (Lon Stowell)
Organization: Pyramid Technology Corp., Mountain View, CA
Lines: 19

In article <5234@orbit.cts.com> kurt@pnet51.orb.mn.org (Kurt Sletterdahl) writes:
>Pardon my dumbness, but why don't V.32bis modems have a DTE interface speed of
>57,600bps? I thought, with V.42bis data compression, that modems were supposed
>to have a DTE that was four times the modulation rate. Thanks in advance for
>your patient response.
>
  A few of them do.  The other vendors (38.4 folks) maintain
  that the actual NUMBER of connections where you can really get
  57.6 throughput isn't sufficient to warrant this....they
  maintain that you are more likely to be running at 38.4
  effective thru-put.

  Likely quite a bit of truth there, given the sources.  One
  wonders though if it isn't that UARTS that can run 57.6 are a
  few pennies more expensive than the ones that only go up to
  38.4.....and a LOT of hardware DTE's don't have UARTS that can
  go 57.6 either.   

[   If 19.2 is EXTA, and 38.4 is EXTB, would 57.6 be EXTC? >:-) ]