ISO/IEC 18056:2007 specifies an XML protocol for the services described in ISO/IEC 18051. It provides an alternative protocol to the ASN.1 based protocol specified in ISO/IEC 18052.
ISO/IEC 18056:2007 describes the concepts underlying the request/response model, application association, notation and service, and a description of the template used in ISO/IEC 18056:2007. It also contains CSTA-specific protocol details.
An annex specifies the Protocol Implementation Conformance Statement (PICS) for ISO/IEC 18056:2007. Examples of CSTA XML encodings are provided.