Understanding HL7 transports – ebXML vs MLLP vs WS

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

The following table shows the availability of various features in each of the transport specifications

Feature ebXML WS MLLP
Addressing Yes Yes No
Routing Yes Yes No
Reliable Messaging Yes Yes Yes
In-order delivery Yes Yes Yes
At-Most-Once delivery Yes Yes Yes
Security Yes Yes No
Integrity Yes Yes No
Confidentiality Yes Yes No
Non-Repudiation Yes Yes No
Authorization Yes Yes No
Authentication Yes Yes No
Auditing Yes Yes Yes
Encryption Yes Yes No
HL7 v2 support Yes No Yes

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