US Robotics 005689-03 Manual page 18

Make sure that your software and
modem are set to the same flow control
setting and to a fixed serial port rate (it
should not be 14,400 or 28,800).
Type the following command to load the
template that enables hardware flow
control and other optimal settings:
AT&F1&D0<Enter>
If your communications If your communications
software is reporting software is reporting
many Cyclic Redundancy many Cyclic Redundancy
Check (CRC) errors and Check (CRC) errors and
low Characters Per low Characters Per
Second (CPS), Second (CPS),
You might have a bad phone line. Place
the call again. The phone company
routes calls differently each time you call.
Type the following command to load the
template that enables hardware flow
control and optimal settings:
AT&F1&D0<Enter>
Lower the serial port rate in your
communications software to 38,400 bps
or 19,200 bps.
Try a different file transfer protocol.
Zmodem is best. Ymodem is second best.
If errors are occurring in your If errors are occurring in your
V.17 (14.4) fax transmissions, V.17 (14.4) fax transmissions,
Enter the following initialization string in
your software modem setup screen:
AT&D0&H3&I2&R2S7=90
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