The present document is applicable to the stage three of the Security tools (SET) procedures for the pan-European
Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators at the
T reference point or coincident S and T reference point (as defined in ITU-T Recommendation I.411 see annex D) by
means of the Digital Subscriber Signalling System No. one (DSS1) protocol. Stage three identifies the protocol
procedures and switching functions needed to support a telecommunication service (see ITU-T Recommendation I.130
see annex D).
The present document provides the Protocol Implementation Conformance Statement (PICS) proforma for the ISDN
DSS1 security tools protocol as specified in EN 301 002-1 [2] in compliance with the relevant requirements and in
accordance with the relevant guidance given in ISO/IEC 9646-7 [4].
The supplier of a protocol implementation which is claimed to conform to EN 301 002-1 [2] is required to complete a
copy of the PICS proforma provided in annex A of the present document and is required to provide the information
necessary to identify both the supplier and the implementation.