Private Integrated Services Network (PISN) - Specification, functional models and information flows - Identification supplementary services [ISO/IEC 14136 (1995), modified] (Endorsement of the English version ETS 300173:1996 as German standard)
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Data link layer - Part 2: General protocol specification [ITU-T Q.921 (1993), modified]; English version ETS 300402-2:1995
Methods for Testing and Specification (MTS) - Protocol and profile conformance testing specifications - Standardization methodology; English version ETS 300406:1995
Private Integrated Services Network (PISN) - Specification, functional models and information flows - Circuit-mode multi-rate bearer services [ISO/IEC 11584 (1996) modified]; English version EN 301049 V 1.1.1 (1997.09)— 6 стр.
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Circuit-mode basic services [ISO/IEC 11572 (2000) modified] (Endorsement of the English version EN 300172 V1.5.1 (2003-06) as German standard)— 2 стр.
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Circuit-mode basic services [ISO/IEC 11572 (2000) modified] (Endorsement of the English version EN 300172 V1.5.1 (2003-06) as German standard)— 2 стр.