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From: lstowell@pyrnova.pyramid.com (Lon Stowell)
Newsgroups: comp.dcom.modems
Subject: Re: High-end Modem Speeds...
Message-ID: <149009@pyramid.pyramid.com>
Date: 21 Mar 91 00:51:32 GMT
Sender: daemon@pyramid.pyramid.com
Reply-To: lstowell@pyrnova.pyramid.com (Lon Stowell)
Organization: Pyramid Technology Corp., Mountain View, CA
Lines: 17

In article <9103200803.AA13245@ucbvax.Berkeley.EDU> ST7021@SIUCVMB.BITNET writes:
>I am curious to know what the 'real' connection speeds (minus compression, etc)
>of some of today's high speed modems are (Hayes, USR and Telebit, for example).
>I had an interesting coversation with an IBM telecomm guru about six years ago
>where he told me that 9600bps was about as high as normal phone lines can
>handle due to their quality. Is this still generally true? I realize that he
>had given me a number that was in a logical step (2400, 4800, 9600, ...) so
>is there a maxed-out ceiling speed, once again minus compression, etc?

  Technology marches on.  With a good V.32bis modem you can
  actually get 14,400 bits/second thru-put on most lines in
  North America.   If you are using an async terminal, the
  thruput is slightly higher due to conversion in the modems...
   
  For sync protocols, 14,400 is available.  If you choose to go
  to the added expense of data conditioning for your access
  loop, this speed is more typical than not.