Kyocera KM-2560 Operation Manual page 232

NOTE:
The abbreviations denote the following paper sizes.
ST: Statement
STR: Statement-R
LT: Letter
LTR: Letter-R
LG: Legal
LD: Ledger
When a paper type is selected in Media Type, a received fax is printed
using the matching paper source. (Refer to page 7-7.)
Even if [All Media Types] is selected, paper types such as transparency
cannot be used for fax printouts.
Appendix-10 OPERATION GUIDE