92
MINI-MODEM (33.6 KBPS DATA/FAX MODEM)
• Try entering the L8 (List Online Diagnostics)
command in online mode, making a screen print
of the diagnostics listing, and checking for
parameters that may be unacceptable (number
of retrains, round-trip delay, etc.).
6.8 I Am Losing Data
• If you are using data compression and a high
speed serial port, set the serial port baud rate
to four times the data rate.
• Your 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.
• Make sure the flow-control method you selected in
software matches the method selected in the
modem.
• If 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.
• Try entering the L8 (List Online Diagnostics)
