HP LaserJet Pro 300 Color MFP M375 - Manual (Page 188)

4. To connect an internal or external modem on a computer, plug one end of a telephone cord into
the product “telephone line out” port
. Plug the other end of the telephone cord into the fax
“line in” port.
NOTE: Some modems have a second “line” port to connect to a dedicated voice line. If you
have two “line” ports, see your modem documentation to make sure that you connect to the
correct “line” port.
5. To connect a caller-ID box, plug a telephone cord into the previous device’s “telephone” port.
Plug the other end of the telephone cord into the caller-ID box “line” port.
172 Chapter 12 Fax ENWW