Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. Two (DSS2) Protocol; Closed User Group (CUG) Supplementary Service; Part 2: Protocol Implementation Conformance Statement (PICS) Proforma Spec.
This second part of ETS 300 770 is applicable to the stage three of the Closed User Group (CUG) supplementary service for the pan-European Broadband Integrated Services Digital Network (B-ISDN) as provided by European public telecommunications operators at the TB reference point or coincident SB and TB reference point (as defined in ITU-T Recommendation I.413 [7]) by means of the Digital Subscriber Signalling System No. two (DSS2) protocol. Stage three identifies the protocol procedures and switching functions needed to support a telecommunications service (see CCITT Recommendation I.130 [6]). This ETS provides the Protocol Implementation Conformance Statement (PICS) proforma for the B-ISDN DSS2 CUG supplementary service protocol as specified in ETS 300 770-1 [3] in compliance with the relevant requirements and in accordance with the relevant guidance given in ISO/IEC 9646-7 [5]. The supplier of a protocol implementation which is claimed to conform to ETS 300 770-1 [3] is required to complete a copy of the PICS proforma provided in annex A of this ETS and is required to provide the information necessary to identify both the supplier and the implementation.