This second part of EN 301 061 is applicable to the generic functional protocol for the support of supplementary
services for Virtual Private Network (VPN) applications for the pan-European Integrated Services Digital Network
(ISDN) as provided by European public telecommunications operators at the "b service entry point" (as defined in
EN 301 060-1 [2]) by means of the DSS1 protocol.
The present document provides the Protocol Implementation Conformance Statement (PICS) proforma for the ISDN
DSS1 generic functional protocol for VPN applications as specified in EN 301 061-1 [4] in compliance with the
relevant requirements and in accordance with the relevant guidance given in ISO/IEC 9646-7 [6].
The supplier of a protocol implementation which is claimed to conform to EN 301 061-1 [4] 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.