ETSI PRETS 300 806-1-1997 Private Integrated Services Networks (PISN); Inter-Exchange Signalling Protocol; Generic Functional Protocol for the Support of Supplementary Services; Part 1: Test Suite Structure and Test Purposes (TSS& TP) was changed to ETSI ETS 300 806-1-1998 Private Integrated Services Network (PISN); Inter-Exchange Signalling Protocol; Generic Functional Protocol for the Support of Supplementary Services; Part 1: Test Suite Structure and Test Purposes (TSS&TP).
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