Conclusion Range:1-89 (Enumerated type. 1: Normal 2: Contact with the power line 3: A line mixed with others 4: B line mixed with others 5: Mixed with others (two lines) 6: A line grounding 7: B line grounding 8: AB grounding 9: Self-mixed (small resistance, self-mixed) 10: A-B poor insulation 11: A-ground leakage 12: B-ground leakage 13: AB ground leakage 14: A-B leakage 15: NT1 not connected 16: not on-hook 17: unknown 18: self-Mixed(inMDF) 19: self-Mixed(outMDF) 20: cutLine(inMDF) 21: cutLine(outMDF) 22: A-B voltage abnormal 23:lines voltage abnormal 24:lines resistance abnormal 25: A-B resistance abnormal 26: self-mixed (small resistance, self-mixed) or not on-hook 27:lines abnormal 30: DC voltage(Power feed) 31: AC voltage(Ringing) 32: DC voltage(Offhook) 33: DC voltage 34: AC voltage 60: A->ground AC voltage abnormal 61: B->ground AC voltage abnormal 62: AB-ground AC voltage abnormal 63: AB->ground DC voltage abnormal 64: A->ground DC voltage abnormal 65: B->ground DC voltage abnormal 66: A-B DC voltage abnormal 67: A->ground insulation resistance abnormal 68: B->ground insulation resistance abnormal 69: AB->ground insulation resistance abnormal 70: A->ground poor insulation 71: B->ground poor insulation 72: AB->ground poor insulation 73: A->ground impedance abnormal 74: B->ground impedance abnormal 75: A->B impedance abnormal 76: B->A impedance abnormal 77: A->ground AC current abnormal 78: B->ground AC current abnormal 79: A-B AC current abnormal 80: A->ground DC current abnormal 81: B->ground DC current abnormal 82: A-B DC current abnormal 83: loop current abnormal 84: loop resistance abnormal 85: AB->ground capacitance abnormal 86: A->ground capacitance abnomal 87: B->ground capacitacne abnormal 88: A-B capacitance abnomal 89: noise abnomal