This annex provides the test specification for the basic call procedures of the integrated services digital network user part of CCITT Signaling System No. 7 (Recommendations Q.761 to Q.764 and Q.767) , based on CCITT Recommendation X.292 (ISO IS 9646). This test specification applies the combined tree and tabular notation (TTCN) and reflects the content of the test specification described in CCITT Recommendation Q.784. In all cases of conflict between the text of the latter Recommendation and this TTCN Annex, Recommendation Q.784 shall prevail.