The GBST SuperStream Gateway provides a fully compliant messaging hub that sends and receives ATO standards compliant documents to and from other SuperStream participants (Gateways, Funds and Employers) and is the main connectivity and management piece for message packaging, sending, receiving and storage. The GBST SuperStream Gateway is an ebMS message handler and ebMS message producer / consumer and complies with the AS4 Profile of the ebMS 3.0 specification.