3Com 3CCFEM556 User Manual page 68

62 C
HAPTER
Symptom
NO DIAL TONE Message
DIGITAL LINE ERROR
Message
Modem clicks repeatedly,
but no connection is made
Modem will not work with
IBM notebooks.
9: D
IAGNOSTICS AND
Solution
Check all the cable connections and make sure
they are secure. The connection to the phone line
could be incomplete, or the phone cable could be
bad.
Make sure the telephone line you are using is not
in use by someone else.
Check to make sure you are using a standard
analog telephone line. If you are trying to connect
to a digital phone system or a PBX, you may
receive an error message.
Make sure the phone line is in working order by
connecting a standard telephone and listening for
a dial tone.
You are trying to connect to a digital phone
system or a PBX. Change lines to connect to a
standard analog telephone line.
You are trying to connect to a digital phone
system or a PBX. Change lines to connect to a
standard analog telephone line. Ordinarily, you
would get a DIGITAL LINE ERROR message, but if
the current is under 100mA, the modem will click
repeatedly but the message will not appear
The cable may not be seated securely. Check both
cable connections to the modem and to the
phone jack or cellular phone.
If you are using an IBM Thinkpad 755CSE or other
IBM computer that has an internal modem, you
must disable the modem in order to use your
LAN+Modem card:
1 Load Windows.
2 Open the IBM Thinkpad Setup Group.
3 Open the DSP Icon.
4 Uncheck Telephony Function.
5 Save.
6 Reboot the computer.
T
ROUBLESHOOTING