Integrated Services Digital Network (ISDN) - Message Waiting Indication (MWI) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300745-1 V 1.2.4 (1998-06) as German standard)
Edition 1999-11

Integrated Services Digital Network (ISDN) - Message Waiting Indication (MWI) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 300745-2 V 1.2.4 (1998-06) as German standard)
Edition 1999-11

Integrated Services Digital Network (ISDN) - Message Waiting Indication (MWI) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user (Endorsement of the English version EN 300745-3 V 1.2.4 (1998-09) as German standard)
Edition 1999-11

Integrated Services Digital Network (ISDN) - Message Waiting Indication (MWI) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300745-5 V 1.2.4 (1998-09) as German standard)
Edition 1999-11

Integrated Services Digital Network (ISDN) - Outgoing Call Barring (OCB) supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification [Endorsement of the English version EN 301001-1 V 1.2.2 (1998-08) as German standard]
Edition 1999-11

Integrated Services Digital Network (ISDN) - Outgoing Call Barring (OCB) supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification [Endorsement of the English version EN 301001-2 V 1.2.2 (1998-08) as German standard]
Edition 1999-11

Integrated Services Digital Network (ISDN) - Outgoing Call Bearing (OCB) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user [Endorsement of the English version EN 301001-3 V 1.1.3 (1998-10) as German standard]
Edition 1999-11

Integrated Services Digital Network (ISDN) - Outgoing Call Bearing (OCB) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network [Endorsement of the English version EN 301001-5 V 1.1.3 (1998-10) as German standard]
Edition 1999-11

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Connection characteristics; peak cell rate modification by the connection owner - Part 1: Protocol specification [ITU-T Recommendation Q.2963.1 (1996), modified] (Endorsement of the English version EN 301003-1 V 1.1.3 (1999-05) as German standard)
Edition 2000-04

Q3 interface at the Local Exchange (LE) for line and circuit testing of analogue and Integrated Services Digital Network (ISDN) subscriber lines - Part 1: Q3 interface specification (Endorsement of the English version EN 301006-1 V 1.2.3 (1998-10) as German Standard)
Edition 2000-02