| Created |
| Associated with CNS 13886 |
| Associated with ISO/IEC 6937 |
| Associated with ISO 6937 |
| Associated with ISO 6937/2 |
| Associated with T.51 |
| Associated with ITU T.51 |
| Associated with ISO/IEC 6937:2001 |
| Associated with ISO_6937-2-add |
| Associated with ISO_6937-2-25 |
| Associated with CCITT Recommendation T.51 |
| Associated with CCITT T.51 |
| Associated with ITU-T Recommendation T.51 |
| Associated with T51String |
| Associated with T.51String |
| Associated with KS X 1018-1 |
| Associated with KS X 1018-1:2004 |
| Associated with KS X 1018 |