US Robotics Sportster Operating Instructions Manual page 109

PROBLEM DIAGNOSIS
Your You may have a bad phone
communicatio line.
ns software is
Optimum flow control
reporting
settings may not be enabled
many cyclic
on your modem.
redundancy
check (CRC) The serial port rate in your
errors and communications software
low may be set too high for your
characters per modem's UART or your
second (CPS). area's phone lines.
The remote site you are
dialing into may have trouble
with the file transfer protocol.
There may be a Terminate and
Stay Resident (TSR) program
(such as a screen saver or
virus scanner) running in the
background, disrupting data
communications.
T O
ROUBLESHOOTING AND NLINE
POSSIBLE SOLUTION
Try placing the call again. The phone company routes calls differently
each time.
In terminal mode, type AT&F1 and press ENTER to load the optimum
hardware flow control settings:.
Lower the serial port rate in your communications software to 57,600 bps,
38,400 bps, or 19,200 bps. NOTE: The port rate for an x2 modem cannot be
set lower than 57,600.
Try using a different file transfer protocol. Do not use Xmodem if other
protocols are available. Zmodem is the preferred protocol.
Disable any Terminate and Stay Resident (TSR) programs running in the
background. If you have software running as a TSR, check the software's
manual for information about disabling its ability to operate as a TSR.
H R
ELP ESOURCES
105