Chapter 4: Troubleshooting 33
Problem: Your modem does not make a connection.
Solution: If your modem places calls but never connects,
make sure you are dialing the right number
and that the remote modem is turned on.
Problem: You receive bursts of errors occasionally,
but otherwise data quality is good.
Solution: The connection may have been established on
poor-quality or noisy telephone lines. Hang up
and place the call again to try to obtain a bet-
ter connection.
Someone may be picking up an extension
connected to the line that your modem is us-
ing. If your modem is sharing a telephone line
with other telephones, inform the other users
when you will be making a data call, or install
a separate line dedicated to data calls.
Your telephone line may have a Call Waiting
feature and a call is being received. See the
Call Waiting discussion above.
Problem: Random errors occur or data is missing in
transmitted data.
Solution: Use the MNP or V.42 protocol if the remote
modem supports one of these protocols. See
the table on page 31 for more information.
Select a lower baud rate in your communica-
tions software and place the call again.
If both modems are using the MNP or V.42
protocol, the only way this can occur is if your
modem and communications software are not
using the appropriate flow control. Configure
your communications software for RTS/CTS
(hardware) flow control. Your computer will
now pause for the transmission to be stored.
Problem: Modem performance seems sluggish.
Solution: If you are connected to the Internet, there may
be a lot of “traffic” at the Web sites you are
visiting. Other possible causes are lack of suf-
ficient memory in your computer (16 mega-
bytes of RAM required) or a slow processor
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