In this time of open system architectures, systems of various makes and origin co-operate, pass, and share pieces of information The pieces of information, thus exchanged, should trigger the same understanding by all users, Ambiguities in the translation, presentation, or interpretation of the data and information may be the cause of serious problems, This paper addresses some of the aspects of interoperability and describes ways of achieving, monitoring, and maintaining inter-operability in particular for tactical data links such as Link 11 and Link 16 Emphasis is given to tactical data link interoperability with the NA TO E-3A
