Very Computer

I recently got a 14.4k baud (V.42) modem for Christmas.  Since I,
unfortunately, am mor familiar with MS Windows, I opted to first install
it under DOS and work the bugs out there.  Well, I plugged the card
in and reconfigured Procomm Plus for Windows.  The output, after dialing
was EXTREMELY lagged.  So, I went to the Control Panel and changed
COM3's speed.  That fixed the problem completely.

Now, I am having the same problem with Linux.  I am going to assume,
since I am otherwise clueless on the internal workings of Linux,
that it is the same problem.  The question is, how do I change /dev/cua2's
port speed to 14400, or even 57600?  (Yes, the modem has MNP5 and supports
that high speed)  [Disclaimer: I think I just set my MS Windoze to 14.4
though...can't remember]

Thanks ahead of time!
Tim Miller

There are a couple of things:
(1)  The speed of the port is the speed at which the computer talks to the
     modem (DTE).  If you are using a 14.4 modem it probably uses compression
     and you want to set your port speed to something like 19200 or 38400.
     There is no entry for 14400, anyway you want to send at a higher speed
     to the modem so it can take advantage of the compression.  You want to
     set your modem to use hardware flow control (RTS/CTS).  This allows the
     modem to tell the computer when to send data.
(2)  The speed that the modems communicate with each other is 14400 (DCE).
     Read your modem manual and make sure it is set up to connect at 14.4
     and the compression is enabled and all of that stuff.
(3)  If you use kermit you can type:
        set line /dev/cua2 (this is COM3 under ms-dos)
        set baud 38400

If you need more help e-mail me.

Steve
--
Steven M. Gallo                         "...If you don't expect too much from
SUNY at Buffalo, Dept. of Comp. Sci.     me you might not be let down..."

Just dump a line such as the following into your /etc/rc.local
file, and it'll make sure that everything is setup correctly
when it boots.  Also, you might want to think about disabling
MNP-5 and use V.42bis instead.  When I was running UUCP with MNP
5 (because I was lazy, and hadn't changed it yet), I was getting
around 1300-1400 cps over my 14.4k modems.   When I removed the
MNP 5 initalization from the dial string, and only turned on
V.42/V.42bis, it jumped to a constant 1600-1690.  Pretty big
differance.

        # Set port speed (on /dev/cua2) to 57,600 bps
        echo "Setting serial port to 57,600 DTE rate..."
        setserial /dev/cua2 spd_hi

Good luck.  However, I wonder if this is really the problem, as
Linux should automagically set the speed to 38,400 bps; normally
enough for the average 14.4k modem.  I could be wrong, though.

--

   "If bankers can count, how come they have eight windows and
   only four tellers?"