The present document provides the Protocol Interface Conformance Statement (PICS) proforma for the signalling
protocol for ATM traffic descriptor modification for the Broadband-Integrated Services Digital Network (B-ISDN) by
means of the Digital Subscriber Signalling System No. two (DSS 2) as specified in EN 301 276-1 [2]. It is the second
EN in a family of ENs that concern the modification of ATM traffic parameters in B-ISDN connections.
The supplier of a protocol implementation which is claimed to conform to EN 301 276-1 [2] is required to complete a
copy of the PICS proforma provided in annex A of the present document in addition to the PICS proforma in
EN 301 003-2 and is required to provide the information necessary to identify the supplier and the implementation.
Further ENs (or further parts of this EN) provide the method of testing and detailed application specific requirements to
determine conformance to this EN.
The provision of this service requires the support of the protocol for the basic point-to-point call/bearer connections as
defined in EN 300 443-1 [1].