IBM Aptiva Reference Manual page 60

If the problem is...
Can't use second modem
When you try to use the
modem, your computer or
modem is unable to detect
a dial tone
56
Here's what to do...
If your computer came with more than one modem or
if you added a second modem:
• Make sure that the telephone line is connected to the
modem you want to use.
• Make sure that the communications software you are
using is properly configured to use the second
modem. If your computer came from the factory with
a second modem, Line 2 is for Data/Fax only. You will
be unable to use voice or video conferencing features
with the Line 2 modem.
• Make sure that the second modem is properly
configured. A second modem must use a different
COM port and system IRQ from the first modem.
1 Make sure the telephone line is correctly connected to
your computer. For instructions on connecting your
computer to the telephone network, refer to the Setup
Poster .
2 Make sure the telephone line is working.
3 Add the modem command x3 to the initialization
string for the communications program you are using.
For help with changing the initialization string, refer to
the documentation that came with your
communications program.
If any of these problems continue after taking the actions
listed, refer to any documentation that may have come with
your modem and sound cards. If you find no solution there,
run the diagnostics programs that came with your computer.
If you need service, see "HelpWare support and services" on
page 79.
Solving audio, multimedia, and modem problems