Set the parameters in the printer.
From the control panel, navigate to the menu for the port settings.
Locate the menu for the serial port settings, and then adjust the settings, if necessary.
Apply the changes.
From your computer, open the printers folder, and then select your printer.
Open the printer properties, and then select the COM port from the list.
Set the COM port parameters in Device Manager.
Configure the printer for you to send and receive etherFAX messages.
Enabling this application allows you to enforce user quotas for printing, scanning, copying, and faxing tasks.