Technical information

Symptom Charts / Modem -
17
Troubleshooting
PowerBook (FireWire)
TCP/IP control panel is not configured correctly, it may
connect but won’t be able to access any sites.
4. Sometimes online services use different servers for dial-up/
authentication and for services. If one server is down, users
may be able to login but not access any services. Contact the
online service for help.
The dialup software
will not initiate a
connection
1. Use the Modem Country Selector utility to make sure the
modem is set to the correct country.
2. Make sure dialup software is fully installed and all required
extensions are enabled. If necessary, reinstall the dialup
software and provide the necessary information for setup.
Modem is dropping its
connection
1. Use the Modem Country Selector utility to make sure the
modem is set to the correct country.
2. Try another cable and phone jack.
3. The phone line may be too noisy to handle the higher modem
speeds. Try connecting at a slower speed or use a generic CCL
file. (If you are familiar with the CCL script language, you
can edit the modem script to force a connection at a lower
speed.) If the problem continues, contact the phone company
to report the bad phone line.
4. Verify that the user has call waiting on that phone line. With
call waiting active, an incoming call can interrupt the
connection. Disable call waiting using AT commands placed in
the init string of the dialup application. Usually the string is
*70.
5. There may be a problem with the server to which you are
connecting. Servers sometimes develop problems that
disconnect users without explanation. Try calling back later
or use an alternate number if one is available.
6. Check with the Internet Service Provider.
7. Reseat the modem. If the problem persists, replace the
modem.