Steps to configure the MMSI No on a Furuno FM 2721 VHF DSC are the following:
1.Make a Short to the PINS 10 & 22 of the Remote connector (D25 Connector back side).
2.Power ON the VHF.
3.From menu go to:
Setup System Protection (write 632111) OFF.
4.Write the MMSI No and press ENTER.
5.Press Cancel to return to main screen.
6.Shutdown the VHF.
7.Remove the short from Remote connector.
8.Power ON the VHF.

