Incoming Fax, that are printed directly via the UM server, are printed in the wrong size (generally smaller).
Explanation of the values for ScaleMode:
SCALEMODE 1 (Standard): Scale mode that is used standardly by fax2print
SCALEMODE 2 (CLIPPING): Prints exactly one page per graphic
SCALEMODE 3 (NONE): Prints the graphic as it is
SCALEMODE 4 (FACTOR): Prints the graphic with a constant factor, the aspect ratio stays as it is
SCALEMODE 5 (FIT2PAGE): Prints the graphic as big as possible with the size of the site in mind
Disclaimer: Values higher than 5 are not possible. If the Fax doesn't reach 100% site even if the value of ScaleMode is set to 5, it may be caused by the fax header that has to be implemented which is the reason why the fax scales a little bit smaller than the original.