ITU-T Rec. Q.931 bis (02/195) – PICS AND ABSTRACT TEST SUITE FOR ISDN DSS 1 LAYER 3 – CIRCUIT MODE, BASIC CALL CONTROL 
CONFORMANCE TESTING
FOREWORD
CONTENTS
1 Introduction
    1.1 Scope and field of application
    1.2 References
    1.3 Definitions
2 General aspects
    2.1 Test group and subgroups
    2.2 Preamble
    2.3 Test body
    2.4 Postamble
    2.5 Timer definitions
    2.6 PICS/PIXIT relationship to abstract test suite
    2.7 PIXIT proforma
    2.8 Test case selection
3 Abbreviations