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From: jiro@shaman.com (Jiro Nakamura)
Newsgroups: comp.dcom.modems
Subject: Re: Hayes announces Ultra 144 and V.32bis upgrade
Message-ID: <1991Jun28.140736.3084@shaman.com>
Date: 28 Jun 91 14:07:36 GMT
References: <1991Jun27.195532.5461@telebit.com>
Sender: jiro@shaman.com (Jiro Nakamura)
Organization: Shaman Consulting
Lines: 25

In article <1991Jun27.195532.5461@telebit.com> mlikier@telebit.com (Marty  
Likier) writes:
> DISCLAIMER: I am not a modem engineer! However 2 reasons come to my mind.
> (1) V.42bis is probably the most intensive computational process within
> the modem. And it is as simple as one vendor implementing V.42bis better
> than another.(Or vice-a-versa) (2) the RS232 standard is spec'd at 19,200
> and for a modem interface speed of 57,600, it  requires special line drivers
> and receivers.

   I wonder when modem manufacturers will smarten up and lump a very
high speed modem (v32bis w/ v42/v42bis) and put an ethernet connector
on it (sort of like a T1600 + Netblazer) instead of a serial port.
   Then maybe we can see *real* throughput that isn't limited by
serial line speeds. 
   If a ethernet connection isn't good enough then perhaps SCSI?
(what is that, 3~4 megabits a second == 3,000,000 bps). Either
way, the serial line seems to be the major bottleneck in today's
modems and today's computers.

   - jiro nakamura
     jiro@shaman.com
-- 
Jiro Nakamura				jiro@shaman.com
Shaman Consulting			+1 607 277-1440 Voice/Fax/Data
"Bring your dead, dying shamans here!"