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    Re: Google Books
    From: Bill B
    Date: 2007 May 29, 14:43 -0400

    > From: "George Huxtable" 
    
    > My own dialup line normally gives a speed of 50.6 kb. However, these are
    > kilobaud, or kilobits per second, not kilobytes/sec. To achieve the transfer
    > time that Frank quotes, of 37.5 Megabytes in 15 minutes, a rate of 40
    > kilobytes per second would be called for. Perhaps such speeds are indeed
    > available on US dialup lines, but somehow I doubt it. Certainly not here in
    > the UK, though.
    >
    > To download the file he refers to would take me over 2 hours, not 15
    > minutes.
    
    I think George's estimate is closer to the truth, and that assumes an ISP or
    server does not "time-out" the session (cut you off) during such a long
    download.
    
    While there are schemes to enhance the speed of dial up connections, the
    facts remain.  A 56 modem will not achieve that speed as there is (was?) a
    speed limit over phone lines of approx. 43,000 bits a second in the USA.
    Divided by 8 bits per byte, and 1024 bytes per kilobyte, the result a bit
    over 5KB per second.  In practice, 4.0-4.5 KB per second is about my norm
    for actual *content* download.  Which equates to over 2 hours for a 37.5 MB
    file.
    
    Bill
    
    
    
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