This Recommendation considers the technical requirements for the utilization of more broadly defined services. The relationship between radio services in terms of broader and narrower definitions is shown in Fig. 1. The objective of using broadly defined services is to increase the flexibility of allocations. The concept of using broadly defined services in this context does not necessitate the elimination of narrowly defined or subset services, but involves the use of the most broadly defined service possible, given the factors discussed below.
ITU-R SM.1133 FRENCH-1995 Referenced Document
ITU-R SM.1133 Spectrum Utilization of Broadly Defined Services