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Troubleshooting 16-13
Writer: Lorise Fazio Saved by: J Abercrombie Saved date: 12/08/98 4:55 PM
Part Number: 310296-002 File name: Ch16.doc
Solving Modem (PC Card) Problems
Problem Possible Cause Solution
No dial tone Phone service is not
connected to the
telephone wall jack.
Verify service from the
local phone company by
the following steps:
1. Unplug the telephone
cable from the
telephone wall jack.
2. Connect a telephone to
the jack, pick up the
handset, and listen for
a dial tone. If there is a
dial tone, reconnect the
modem to the
telephone wall jack with
the telephone cable
and make sure all
connections are secure.
If there is still no dial
tone, contact your local
phone company or
building manager.
Phone is connected to
a digital PBX jack.
Plugging the modem into a
digital line will result in no
dial tone. Reconnect the
modem cable to an analog
phone jack, then
reestablish connection.
The modem is not
responding to
commands from the
computer keyboard.
Verify the modem and
computer are connected:
1. Click Start Æ Programs
Æ Accessories Æ
HyperTerminal.
2. Go to Terminal Mode,
then type AT and press
the Enter key.
3. If the modem displays
OK, the modem and
computer are working
together. If the modem
displays ERROR, or
does not respond,
restart the computer
and repeat step 1.
4. Type ATDT and listen
for a dial tone.
5. Type ATHO to hang up.