03-18-2014 07:05 AM
Consult the User Guide for your printer and the documentation for your iPhone.
Eprinting works like an email service where you email a document to a global print queue for print processing. The print queue server then sends the printer language back to your printer for physical printing. Kinda like emailing but its all printer talk.
You also need to make sure your printer has the correct connections to facilitate your eprinting function. There should be steps for setting up and configuring this service in the User Guide for the printer.