ETSI PRETS 300 806-1-1996 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)
1998ETSI 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)
1997ETSI 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)
1996ETSI PRETS 300 806-1-1996 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)