Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 17: Call Waiting (CW) supplementary service [ITU-T Recommendation Q.733, clause 1 (1992), modified] (Endorsed by AENOR in December of 2004.)

Die Norm herausgegeben am 1.12.2004

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] (Endorsed by AENOR in March of 2004.)

Die Norm herausgegeben am 1.3.2004

Integrated Services Digital Network (ISDN);Signalling System No.7;ISDN User Part (ISUP) version 2 for the international interface;Part 18: Completion of Calls to Busy Subscriber (CCBS) supplementary service (Endorsed by Asociación Espanola de Normalización in June of 2022.)

Die Norm herausgegeben am 1.6.2022

Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 18: Completion of Calls to Busy Subscriber (CCBS) supplementary service [ITU-T Recommendation Q.733, clause 3 (1997), modified] (Endorsed by AENOR in December of 2004.)

Die Norm herausgegeben am 1.12.2004

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] (Endorsed by AENOR in March of 2004.)

Die Norm herausgegeben am 1.3.2004

Integrated Services Digital Network (ISDN);Signalling System No.7;ISDN User Part (ISUP) version 2 for the international interface;Part 19: Three-Party (3PTY) supplementary service [ITU-T Recommendation Q.734, clause 2 (1993), modified] (Endorsed by Asociación Espanola de Normalización in June of 2022.)

Die Norm herausgegeben am 1.6.2022

Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 19: Three-Party (3PTY) supplementary service [ITU-T Recommendation Q.734, clause 2 (1996), modified] (Endorsed by AENOR in December of 2004.)

Die Norm herausgegeben am 1.12.2004

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] (Endorsed by AENOR in March of 2004.)

Die Norm herausgegeben am 1.3.2004

Integrated Services Digital Network (ISDN);Signalling System No.7;ISDN User Part (ISUP) version 2 for the international interface;Part 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1993), modified] (Endorsed by Asociación Espanola de Normalización in June of 2022.)

Die Norm herausgegeben am 1.6.2022

Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1997), modified] (Endorsed by AENOR in July of 2005.)

Die Norm herausgegeben am 1.7.2005