The present document specifies the user Abstract Test Suite (ATS) for the TB reference point or coincident SB and TB
reference point (as defined in ITU-T Recommendation I.413 [6]) of implementations conforming to the standards for
the Broadband Integrated Services Digital Network (B-ISDN) Digital Subscriber Signalling System No. two (DSS2)
protocol specification for support of Quality of Service Class and parameters indication at call/connection establishment
defined in EN 301 815-1 [1].
A further part of the present document specifies the Test Suite Structure and Test Purposes (TSS&TP) related to this
ATS and partial PIXIT proforma. Other parts specify the TSS&TP and the ATS and partial PIXIT proforma for the
Network side of the TB reference point or coincident SB and TB reference point of implementations conforming to
EN 301 815-1 [1].