3Com 56k User's Manual And Reference page 23

The phone socket you are going to use must be for
an ANALOGUE phone line. Most office phones are
wired through DIGITAL lines. Be sure you know
what type of line you have. The modem will be
damaged if you use a digital phone line.
4. Plug the power adaptor that came with the
modem into a standard wall socket and insert its
plug into the power socket on the modem.
If you want to use a telephone on the same line, use a
splitter arrangement. You cannot use the modem and
a phone at the same time if they share the same
telephone line.
External Modem Installation with Windows 3.x
Plug the power cords, cables, and peripherals
6.
back into the computer and turn on the
computer.
Start Windows 3.x.
7.
Be sure to install software after the modem is
installed.
Turn to "Software Installation" for information
about installing communications software.
Congratulations!
You are ready to start using your
3Com U.S. Robotics Faxmodem
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