> another Linux say the same thing. And so far, on a hamm box, I can only
> get 19200 out of my 28800 pc card modem. Is this typical of Linux, or is
> it just an improper init string or etc?
From my (short) experience many people (including me)
experiencing slower connection speed under Linux were giving
pppd the wrong connection speed.
pppd only accepts a limited set of speeds (19200 38400 ... 115200),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
and if you type a wrong one (e.g. 115000) your connection will
work anyway, but pppd will output an error message 'speed X not
supported' on the log file, and will actually choose a much slower
^^^^^^^^^^^
one.
After realizing this, my connection speed increased a lot (more
than two-three times) :-))), now I can reach 5-6 Kb/s (on
Netscape :))))
It seems that there isn't a place (manpages, howtos, readmes)
where these speeds are listed :(, and even worse, my posting
about this problem via the debian bug tracking system had no
replies :(
Please disseminate this info.
If this is not your case try to tune your packet size:
choose a small one if your phone connection is noisy,
also consider enabling or disabling compression.