Fax connect speeds

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Hi,

On Sun, Dec 06, 1998 at 12:38:22PM -0800, Len Ovens wrote:
> > fax, or the results agreed upon after negotiation?  If it is the exact info, then I KNOW that my
> > *%$*$* Atlas modem is mangling it:  The fax is capable of at least 9600.
> 
> You are aware that many manufactures call 2400 9600? There were a whole
> pile of modems that came out that were 2400 with fax9600 meaning that
> the fax connects at 2400 but by use of compresion get an information
> flow of about 9600. 

Uh, that's not true.  Those 2400/9600's were able to do data (full-duplex,
hard) at 2400bps, send fax (half-duplex, very easy) at 9600 and receive
fax at 2400 or 9600bps.

I've never heard of anything that did "compression" on 2400bps fax to get
more throughput (besides the standard G3 encoding, which could be counted
as "compression").

> When I hear fax 9600, I assume 2400 connect. 

No, fax is real 9600 bps (bit/seconds, which may be somewhat around 600
baud or so - don't start *THAT* discussion now).

> To be
> perfectly honest the only time I have ever gotten any fax connect higher
> than 2400 has been with another modem at 14400, never with a fax
> machine.

Nearly all my fax connections are done at 9600 bps, rarely 7200 bps or
lower (on very bad phone lines, for example).

gert
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Gert Doering - Munich, Germany                             gert@greenie.muc.de
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