US Robotics 56K Series Manual page 37

POSSIBLE SOLUTION
You may have a poor line connection. Place the call again. Calls are routed differently
each time.
POSSIBLE SOLUTION
If you have voice mail, your dial tone may be altered because messages are waiting.
Retrieve your voice mail messages to restore your normal dial tone.
POSSIBLE SOLUTION
Your software may not have auto answer enabled. Enable the auto answer feature. In
your communication software's terminal mode, type ATS0=1 and press ENTER. You
need to enable auto answer before every session unless you alter your software's
initialization string to permanently enable auto answer.
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