Compaq Prosignia 170 Series Maintenance & Service Manual page 117

Modem not responding
Modem does not dial
correctly.
Characters are
garbled/transfer rates
are slow.
Call Waiting has not
been disabled.
There is noise or
excessive traffic on the
phone line.
Modem is not set up
correctly in system
BIOS.
Telephone number is not
entered correctly in the
modem's dialing
software.
There is noise in the
telephone line.
Disable Call Waiting:
1. Select Start -> Setting
-> Control Panel -> select
Modems.
2. From the General tab of
the Modems Properties page,
select Dialing Properties.
From the My Locations tab of
the Dialing Properties page,
check the box labeled This
location has call waiting.
Select *70, 70#, or 1170
from the drop-down list to
disable call waiting.
Try connecting at a later
time.
Check the computer BIOS
setup. If it requires specific
settings for modems, be
sure that they have been
enabled.
Make sure the telephone
number you dialed is correct
if you are using the dialing
directory or the terminal
mode.
Dial 1 if using dialing
long distance.
The other line could be
busy or not answering.
Make sure call waiting
is disabled.
The modem may not
recognize an
international dial tone.
Try the ATX3DT
command and the
telephone number
Check your telephone and
modem cable connections. If
they are a little loose, they
can cause noise on the line.
Check with your local
telephone company for a
phone line filter.