Direct Project specifications—due in large part to MedAllies’ contributions—are in line with an approach the greater EHR vendor community has already embraced. MedAllies supports SMTP as well as the Direct XDR and XDM for specification. The MedAllies Direct HISP provides the SMTP/S/MIME and XD* protocols for secure routing of messages between multiple health endpoints as well as the ability to “step-up” (from SMTP/S/MIME to XD*) and “step-down” (from XD* to SMTP/S/MIME) to route messages between systems that do not conduct the same Direct protocols. The HISP also provides the Direct SMTP-backbone service for HISP-to-HISP interoperability.


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