3Com 3CCFEM556B User Guide - Page 68

Hapter, Iagnostics, Roubleshooting

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62 CHAPTER 9: DIAGNOSTICS AND TROUBLESHOOTING Symptom NO DIAL TONE Message DIGITAL LINE ERROR Message Modem clicks repeatedly, but no connection is made Modem will not work with IBM notebooks. Solution s 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. s Make sure the telephone line you are using is not in use by someone else. s 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. s Make sure the phone line is in working order by connecting a standard telephone and listening for a dial tone. s You are trying to connect to a digital phone system or a PBX. Change lines to connect to a standard analog telephone line. s 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 s The cable may not be seated securely. Check both cable connections to the modem and to the phone jack or cellular phone. s 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.

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62
C
HAPTER
9: D
IAGNOSTICS
AND
T
ROUBLESHOOTING
NO DIAL TONE Message
■
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.
DIGITAL LINE ERROR
Message
■
You are trying to connect to a digital phone
system or a PBX. Change lines to connect to a
standard analog telephone line.
Modem clicks repeatedly,
but no connection is made
■
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.
Modem will not work with
IBM notebooks.
■
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.
Symptom
Solution