HP LaserJet 3100 All-in-One Printer series - Manual (Page 35)

34 1 Set Up EN
If you already have a PC fax program
The JetSuite software that came with the HP LaserJet 3100 product
includes a PC fax program. HP recommends using the included
JetSuite PC fax program because it is designed to work with the HP
LaserJet 3100 product. However, you can continue using the PC fax
program you already have.
If you want to use the JetSuite PC fax program, change the setup for
the other PC fax program so that it doesn’t answer incoming calls, or
uninstall it. You cannot have both programs trying to answer fax calls
on the same line. If you want to continue using your PC fax program,
see the Readme file for a list of PC fax packages that have been
tested for compatibility with the HP LaserJet 3100 product.
Note The HP LaserJet 3100 product comes with scanning software. You can
also use other TWAIN-compliant scanning software that is compatible.
See the Readme file for a list of programs that have been tested for
compatibility.