Samsung SF-560 - Manual (Page 67)

A DDITIONAL F EATURES 4.6
ECM Mode
(Error Correction Mode) Error Correction Mode helps with poor line quality and makes
sure any fax you send are sent smoothly to any other ECM-
equipped fax machine. If the line quality is poor, it takes more
time to send a fax when you are using the ECM.
Select Off to turn this feature off.
Select On to turn this feature on.
Option Description