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Solving Modem Problems
Problem
Modem loses
connection.
Characters are
garbled or transfer
rates are slow.
Cellular connection
doesn't work (North
America only).
Continued
Possible Cause
The cable connection
is loose.
Call Waiting has not
been disabled.
Hang-up Delay S
Register (S10) is set
too low and noise on
the line is causing the
modem to disconnect.
There is noise in the
telephone line.
Environmental factors
are interfering with the
connection.
Solution
Verify that the modem
cable is securely
connected.
To disable Call Waiting
within Windows, double-
click Modems in Control
Panel. Click the General
tabÆDialing Proper-
tiesÆMy Locations.
Contact your local phone
company if you do not
know the code to disable
Call Waiting.
To change S10 default to
150:
Go to HyperTerminal
Command Mode, type
ATS10=150, then press
Enter.
Verify that the modem
cable is securely
connected.
Request a telephone line
filter from your local
telephone company.
Refer to the online
Modem Help.
Troubleshooting 17-15
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