3Com 005687-03 Manual page 102

Possible Solution:
In terminal mode, type AT&F1 and press
ENTER to set hardware flow control.
PROBLEM:
Your commun ications software is
reporting many cyclic redundancy
check (CRC) errors and low
characters per se cond (CPS).
Diagnosis:
You may have a bad phone line.
Possible Solution:
Try placing the call again. The phone
company routes calls differently each time.
98
T O
ROUBLESHOOTING AND
H R
NLINE ELP ESOURCES
Diagnosis:
Optimum flow control settings may not be
enabled on your modem.
Possible Solution:
In terminal mode, type AT&F1 and press
ENTER to set hardware flow control.
Diagnosis:
If your communications program is
DOS-based, you're running it under
Windows, and other software is running,
conflicts between programs may be causing
the CRC errors.
Possible Solution:
Close every program but the communications
program.