User manual

Troubleshooting A-3
Your communication software is reporting many cyclic
redundancy check (CRC) errors and low characters per second
(CPS)
•
You might have experienced noise on the phone line. Place the
call again. The phone company routes call differently each time
you call.
•
Type the
AT&F1
command to load the template that enables the
hardware flow control as other optimal settings.
•
Lower the serial port rate in your communication software to
38,400 bps or 19,200 bps.
•
Try a different file transfer protocol (do not use the XMODEM if
other protocols are available).
You cannot run the fax and communications software at the
same time
•
Communication devices can be accessed by only one application
at a time.
•
In Windows 9X/ME/NT/2000, you can open data and fax
communications at the same time, but they cannot use the same
modem at the same time.