Compaq Notebook Series Troubleshooting Manual page 19

Problems and Solutions
Modem Problems
Problem
No dial tone, with or
without "No dial tone"
message. (continued)
Modem sounds are not
audible.
Modem does not dial
correctly.
1–16
(Continued)
Possible Cause
Telephone service is
not connected to the
telephone wall jack.
A shared telephone line
is in use.
Modem is connected to
a digital line such as an
office PBX line.
System sound is muted
or turned down.
Call waiting feature may
be interfering.
When using the modem
in another country, it
may be necessary to
dial a prefix, such as
"0" or "1."
Solution
Connect a telephone
to the wall jack. If you
do not hear a dial tone,
contact your telephone
service provider.
Make sure another
telephone or modem is
not using the telephone
line.
Connect the modem
to a standard analog
telephone line and
reestablish the
connection.
Use volume buttons or
the volume control icon
on the taskbar to adjust
the volume.
Disable call waiting
feature before dialing.
For information about
disabling call waiting,
and to obtain the
"disable call waiting
code" for your dialing
area, consult your local
telephone service
provider.
Dial "0" or "1" before
dialing the number.
Troubleshooting