Pantum M6700 - How to Adjust Receiving NO. of Rings in Fax Mode on M6800;M7200 Series Printer

70. How to adjust receiving NO. of rings in fax mode on M6800/M7200 Series Printer？
Step5: Select NO.5- “Time format”-“ok”
Step6:
Select “12H or 24H” format in the Time format.
Step1: Please select ‘Menu’
Step2: Select’ NO.2-System set’ by page down button