Integrated Service Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User part (ISUP) version 4 for the international interface - Part 21: Anonymous Call rejection (ACR) supplementary service (ITU-T Recommendation Q.731, clause 4 (1993)) (Endorsement of the English version EN 300356-21 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 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 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 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 12: Conference call, add-on (CONF) supplementary service (ITU-T Recommendation Q.734, clause 1 (1993) and implementors guide (1998), modified) (Endorsement of the English version EN 300356-12 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

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 10: Subaddressing (SUB) supplementary service (ITU-T Recommendation Q.731, clause 8 (1992), modified) (Endorsement of the English version EN 300356-10 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 9: Closed User Group (CUG) supplementary service (ITU-T Recommendation Q.735, clause 1 (1993), modified) (Endorsement of the English version EN 300356-9 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 7: Terminal Portability (TP) supplementary service (ITU-T Recommendation Q.733, clause 4 (1993), modified) (Endorsement of the English version EN 300356-7 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 6: Connected Line Identification Restriction (COLR) supplementary service (ITU-T Recommendation Q.731, clause 6 (1993), modified) (Endorsement of the English version EN 300356-6 V 4.1.2 (2001-07) as German standard)
Edition 2002-01