The present document specifies a library of basic building blocks and a set of rules by which they are combined in order
to describe transport and equipment management function (EMF) functionality in equipment. The library comprises the
functional building blocks needed to completely specify the generic functional structure of the European Digital
Transmission Hierarchy. Equipment, which is compliant with the present document, will be describable as an
interconnection of a subset of these functional blocks contained within the present document. The interconnections of
these blocks will obey the combination rules given. The generic functionality is described in EN 300 417-1-1 [8].