The selection of any of the transport specifications ebXML, MLLP and WS for exchanging HL7 messages depends  upon the key features Security, Addressing, Routing and Reliability. Read more

ebXML is a family of XML standards developed by OASIS (the Organisation for the Advancement of Structured Information Standards) and UN/CEFACT (United Nations Centre for Trade Facilitation and Electronic Business) to provide an interoperable, secure an open XML based infrastructure that enables the global use of electronic business information for all the trading partners. It enables traders to implement e-business solutions for exchanging data in an agreeable format with others. Read more

Systems exchanges HL7 messages using a variety of TCP/IP transports including MLLP, HLLP, SOAP, SMTP, FTP and even HTTP. The most common type of transport used is MLLP ( Minimum Lower Layer protocol )  which sometimes referred as LLP without ‘M’ or simply MLP. Read more