55
MINI-MODEM (56 KBPS DATA/FAX MODEM)
a file already compressed by an archiving program,
the transfer can be marginally slower with data
compression enabled than with it disabled.
• Try entering the &V (View Parameters) command,
making a screen print of the diagnostics listing,
and checking for parameters that may be
unacceptable.
3.7.7 L
OSING
D
ATA
• 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
