Using A Digital Phone Service - Lexmark 20R1000 - X 6650 Color Inkjet Fax Manual

3
Remove the protective plug from the EXT port
4 Connect the other telephone cord to a telephone, and then plug it into the EXT port

Using a digital phone service

The fax modem is an analog device. Certain devices can be connected to the printer so that digital
telephone services can be used.
• If you are using an ISDN telephone service, connect the printer to an analog telephone port (an R-
interface port) on an ISDN terminal adapter. For more information and to request an R-interface port,
contact your ISDN provider.
• If you are using DSL, connect to a DSL filter or router that will support analog use. For more information,
contact your DSL provider.
•
If you are using a PBX telephone service, make sure you are connecting to an analog connection on
the PBX. If none exists, consider installing an analog telephone line for the fax machine. For more
information on faxing when using a PBX telephone service, see the related topic, "Setting up to fax
while behind a PBX."
of the printer.
of the printer.
Fax Setup
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