Code,Termination Reason,Reference
0x00,Unknown,[RFC9174]
0x01,Idle timeout,[RFC9174]
0x02,Version mismatch,[RFC9174]
0x03,Busy,[RFC9174]
0x04,Contact Failure,[RFC9174]
0x05,Resource Exhaustion,[RFC9174]
0x06-0xEF,Unassigned,
0xF0-0xFF,Reserved for Private or Experimental Use,[RFC9174]