This ETS contains two Abstract Test Suites (ATS) to test the TETRA security protocols. The protocols are specified in ETS 300 392-7 [2] and ETS 300 396-6 [3]. The Test Suite Structure (TSS) and Test Puposes (TPs) for this ATS are defined in ETS 300 394-5-2 [1]. The objective of this test specification is to provide a basis for approval tests for TETRA equipment giving a high probability of air interface inter-operability between different manufacturer's TETRA equipment. The ISO standard for the methodology of conformance testing@ ISO/IEC 9646-1 [4]@ ISO/IEC 9646-2 [5]@ ISO/IEC 9646-3 [6] and ISO/IEC 9646-5 [7]@ as well as the ETSI rules for conformance testing@ ETS 300 406 [9] and ETR 141 (see bibliography)@ are used as a basis for the test methodology. Annex A provides the Tree and Tabular Combined Notation (TTCN) part of these ATS. Annex B provides the Partial Protocol Implementation eXtra Information for Testing (PIXIT) Proforma of this ATS. Annex C provides the Protocol Conformance Test Report (PCTR) Proforma of this ATS.