Integrated Service Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User part (ISUP) version 4 for the international interface - Part 20: Completion of Calls on No Reply (CCNR) supplementary service (ITU-T Recommendation Q.733, clause 5 (1999), modified) (Endorsement of the English version EN 300356-20 V 4.3.1 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 18: Completion of Calls to Busy Subscriber (CCBS) supplementary service (ITU-T Recommendation Q.733, clause 3 (1997), modified) (Endorsement of the English version EN 300356-18 V 4.1.2 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 19: Three-Party (3PTY) supplementary service (ITU-T Recommendation Q.734, clause 2 (1996) and implementors guide (1998), modified) (Endorsement of the English version EN 300356-19 V 4.2.1 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 16: Call Hold (HOLD) supplementary service (ITU-T Recommendation Q.733, clause 2 (1993), modified) (Endorsement of the English version EN 300356-16 V 4.1.2 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 17: Call Waiting (CW) supplementary service (ITU-T Recommendation Q.733, clause 1 (1992), modified) (Endorsement of the English version EN 300356-17 V 4.1.2 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 5: Connected Line Identification Presentation (COLP) supplementary service (ITU-T Recommendation Q.731, clause 5 (1993), modified) (Endorsement of the English version EN 300356-5 V 4.1.2 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 4: Calling Line Identification Restriction (CLIR) supplementary service (ITU-T Recommendation Q.731, clause 4 (1993), modified) (Endorsement of the English version EN 300356-4 V 4.2.1 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 3: Calling Line Identification Presentation (CLIP) supplementary service (ITU-T Recommendation Q.731, clause 3 (1993), modified) (Endorsement of the English version EN 300356-3 V 4.2.1 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 1: Basic services (ITU-T Recommendations Q.761 to Q.764 (1999), modified) (Endorsement of the English version EN 300356-1 V 4.2.1 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 14: Explicit Call Transfer (ECT) supplementary service (ITU-T Recommendation Q.732, clause 7 (1996) and implementors guide (1998) modifiziert) (Endorsement of the English version EN 300356-14 V 4.2.1 (2001-07) as German standard)
Edition 2002-01