ISO/IEC 21117:2005 specifies the information and the related test methods to be listed in specification sheets for digital copying machines and multi-function devices. In consideration of the progress in digital and network technology, it contains the specification of common extended functions of multi-function devices, i.e. scanner functions, printer functions, facsimile functions and Internet facsimile functions including e-mail transmission functions. It also includes the specifications of additional options, such as document feeder, auxiliary paper-supply devices, sorters and finishers.