You might be able to subscribe to a low cost phone service that allows you to send and receive faxes with your printer by using the Internet. This method is called Fax over Internet Protocol (FoIP).
You probably use a FoIP service (provided by your telephone company) when you:
Dial a special access code along with the fax number, or
Have an IP converter box that connects to the Internet and provides analog phone ports for the fax connection.
Note
You can only send and receive faxes by connecting a phone cord to the port labeled "1-LINE" on the printer. This means that your connection to the Internet must be done either through a converter box (which supplies regular analog phone jacks for fax connections) or your telephone company.
Tip
Support for traditional fax transmission over any Internet protocol telephone systems are often limited. If you experience problems faxing, try using a slower fax speed or disabling the fax error-correction mode (ECM). However, if you turn off ECM, you cannot send and receive color faxes. (For more information about changing the fax speed, see Set the fax speed. For more information about using ECM, see Send a fax in Error Correction Mode.
If you have questions about Internet faxing, contact your Internet faxing services support department or your local service provider for further assistance.