B.3.1.2 Service-Class-Application-Information (A-ASSOCIATE-AC)

The SOP Class Extended Negotiation Sub-item is made of a sequence of mandatory fields as defined by PS 3.7. Table B.3-2 shows the format of the Service-class-application-information field of the SOP Class Extended Negotiation Sub-Item for SOP Classes of the Storage Service Class in the A-ASSOCIATE-AC.

Table B.3-2SERVICE-CLASS-APPLICATION-INFORMATION (A-ASSOCIATE-AC)

Item Bytes Field Name Description of Field
1 Level of support This byte field defines the supported storage level of the Association-acceptor. It shall be encoded as an unsigned binary integer and shall use one of the following values: 0 - level 0 SCP 1 - level 1 SCP 2 - level 2 SCP 3 - N/A - Association-acceptor is SCU only If extended negotiation is not supported, no assumptions shall be made by the Association-requester about the capabilities of the Association-acceptor based upon this extended negotiation.
2 Reserved This reserved field shall be sent with a value 00H but not tested to this value when received.
3 Level of Digital Signature support A Level 2 SCP may further define its behavior in this byte field. 0 – The signature level is unspecified, the AE is an SCU only, or the AE is not a level 2 SCP 1 – signature level 1 2 – signature level 2 3 – signature level 3 If extended negotiation is not supported, no assumptions shall be made by the Association-requester about the capabilities of the Association-acceptor based upon this extended negotiation.
4 Reserved This reserved field shall be sent with a value 00H but not tested to this value when received.
5 Element Coercion This byte field defines whether the Association-acceptor may coerce Data Elements. It shall be encoded as an unsigned binary integer and shall use one of the following values: 0 - does not coerce any Data Element 1 - may coerce Data Elements 2 - N/A - Association-acceptor is SCU only If extended negotiation is not supported, no assumptions shall be made by the Association-requester about the capabilities of the Association-acceptor based upon this extended negotiation.
6 Reserved This reserved field shall be sent with a value 00H but not tested to this value when received.