I'll try that.  Thanks for the informative reply.  :-)

-ASC

On Wed, 12 Nov 1997 18:05:25 -0500 (EST) 
 Chuck Robey <chuckr@glue.umd.edu> wrote:

 > On Wed, 12 Nov 1997, Andrew S. Clapp wrote:
 > 
 > >  > 28800 bps is a rate which standard PC com ports don't support.  Try
 > >  > replacing 28800 with 38400 and see if the behavior improves.
 > > 
 > >  I did try that.  I also tried 9600 and 14400.  No good.
 > 
 > 
 > You have to understand one thing ... numbers like 14400 and 28800 are
 > values that no computer has ever trasferred data at.  The interfaces on
 > those modems don't even have the capability to do those values, much less
 > your computer.  The modems, every one of them that does better than 9600,
 > have software in them to change the BPS rate to something that you can
 > use.  If you try to set your BPS to something crazy like 28800, your
 > computer reacts like you tried to set it to Tuesday (it won't/can't do
 > it).  Set it to something greater, and it'll work.  The modems can be
 > optioned (using command codes) to look for one particular bit rate, but I
 > just let mine auto-detect.
 > 
 > Most of the modems have compression schemes working, so that the actual
 > information rate is greater than the modulated bit rate.  I set mine to
 > 57600, many set theirs to 115000, and you do see _some_ of this, depending
 > on the compressibility of the data you're transferring, and if you don't
 > have the compression setting disabled.  Look for keywords like "MNP" or
 > V.42bis on your modem.
 > 
 > Whatever you do, don't use a bogus number like 14400 or 28800.  Those
 > things are for modem designers _only_.
 > 
 > > 
 > >  -ASC
 > > 
 > > *                                                    *
 > >     Andrew S. Clapp - clapp@peak.org - WWW Support
 > > *                                                    *
 > > 
 > > 
 > 
 > ----------------------------+-----------------------------------------------
 > Chuck Robey                 | Interests include any kind of voice or data 
 > chuckr@glue.umd.edu         | communications topic, C programming, and Unix.
 > 213 Lakeside Drive Apt T-1  |
 > Greenbelt, MD 20770         | I run Journey2 and picnic, both FreeBSD
 > (301) 220-2114              | version 3.0 current -- and great FUN!
 > ----------------------------+-----------------------------------------------
 > 
 > 
 > 
 > 

*                                                    *
    Andrew S. Clapp - clapp@peak.org - WWW Support
*                                                    *