This unit describes the skills required to process, transmit and receive messages utilising Defence messaging systems.This unit was developed for communications and information systems operators working within Defence but may be relevant to others who work in this field.The skills and knowledge described in this unit must be applied within the legislative, regulatory and policy environment in which they are carried out. Organisational policies and procedures must be consulted and adhered to.Those undertaking this unit would work independently and as part of a team, under direct and/or indirect supervision within specific communications environments. They would use discretion and judgement, and take responsibility for the quality of their outputs while performing specific tasks in a range of sometimes unpredictable contexts.No licensing, legislative or certification requirements apply to unit at the time of publication.