BS 7521:1992

Specifies how UK Administrative Management Domains (UK ADMDs) and UK Private Management Domains are named; how UK ADMDs connect to form the UK Message Transfer Backbone; and the resolution of other matters left open for national decision in BS ISO/IEC 10021.Cross References:BS 4730BS 5374BS 7306BS 7453BS ISO 749-3BS ISO/IEC 8824BS ISO/IEC 9834-1BS ISO/IEC 10021-2BS ISO/IEC 10021-4BS ISO/IEC 10021-6CCITT Recommendation F.401CCITT Recommendation F.410CCITT Recommendation X.121CCITT Recommendation X.400CCITT Recommendation X.401CCITT Recommendation X.402CCITT Recommendation X.411Telecommunications Act 1984