31
User Guide
Losing Data
4If you are using data compression and a high speed serial port, set the serial port
baud rate to four times the data rate.
4Your UART may not be reliable at serial port speeds over 9600 bps or 19,200 bps.
Turn off data compression, reset your serial port speed to a lower rate, or replace
your serial port with a faster one.
4Make sure the flow control method you selected in software matches the method
selected in the modem.
4If you are running under Windows 3.1 and have a 16550AFN UART, you may need
to turn on the 16550s data buffers and/or replace the Windows serial driver,
COMM.DRV.
4Try entering the &V (View Parameters) command, making a screen print of the
diagnostics listing, and checking for parameters that may be unacceptable.
Garbage Characters on the Monitor
4Your computer and the remote computer may be set to different word lengths,
stop bits, or parities. If you have connected at 8-N-1, try changing to 7-E-1, or
vice-versa, using your communications software.
4You may be experiencing line noise. Enable error correction, if it is disabled, or
hang up and call again; you may get a better connection.
4At speeds above 2400 bps, the remote modem might not use the same
transmission or error correction standards as your modem. Try connecting at a
slower speed or disabling error correction. (With no error correction, however,
line noise can cause garbage characters.)
4Try entering the &V (View Parameters) command, making a screen print of the
diagnostics listing, and checking for parameters that may be unacceptable.