The purpose of this document is to promulgate technical and engineering parameters in the form of mandatory system standards and option-objectives that are considered necessary to ensure inter-and promote compatibility and commonality among Satellite(SATCOM) systems. It is also the purpose of this document to a level of performance for SATCOM systems considered necessary to the requirements of a majority of users. The technical parameters promulgated by this document represent, in general, minimum interoperability and performance characteristics, which may be exceeded as required in order to satisfy specific requirements.