FX.25 [AX.5 + FEC (FORWARD ERROR CORRECTION)]

DOCUMENTATION

https://en.wikipedia.org/wiki/FX.25_Forward_Error_Correction
FX.25 Forward Error Correction Extension to AX.25 Link Protocol For Amateur Packet Radio Version: 0.01 DRAFT ‒ 01 September 2006
FX.25 Forward Error Correction Extension to AX.25 Link Protocol Presented by Jim McGuire KB3MPL
AX.25 + FEC = FX.25 ‒ John Langner, WB2OSZ, December 2019